* [v8 1/5] vfs: adds general codes to enforces project quota limits
2014-12-09 5:22 [v8 0/5] ext4: add project quota support Li Xi
@ 2014-12-09 5:22 ` Li Xi
2014-12-09 5:22 ` [v8 2/5] ext4: adds project ID support Li Xi
` (4 subsequent siblings)
5 siblings, 0 replies; 37+ messages in thread
From: Li Xi @ 2014-12-09 5:22 UTC (permalink / raw)
To: linux-fsdevel, linux-ext4, linux-api, tytso, adilger, jack, viro,
hch, dmonakhov
This patch adds support for a new quota type PRJQUOTA for project quota
enforcement. Also a new method get_projid() is added into dquot_operations
structure.
Signed-off-by: Li Xi <lixi@ddn.com>
Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
Reviewed-by: Jan Kara <jack@suse.cz>
---
fs/quota/dquot.c | 35 ++++++++++++++++++++++++++++++-----
fs/quota/quota.c | 8 ++++++--
fs/quota/quotaio_v2.h | 6 ++++--
include/linux/quota.h | 2 ++
include/uapi/linux/quota.h | 6 ++++--
5 files changed, 46 insertions(+), 11 deletions(-)
diff --git a/fs/quota/dquot.c b/fs/quota/dquot.c
index 6b45272..379ff77 100644
--- a/fs/quota/dquot.c
+++ b/fs/quota/dquot.c
@@ -1154,8 +1154,8 @@ static int need_print_warning(struct dquot_warn *warn)
return uid_eq(current_fsuid(), warn->w_dq_id.uid);
case GRPQUOTA:
return in_group_p(warn->w_dq_id.gid);
- case PRJQUOTA: /* Never taken... Just make gcc happy */
- return 0;
+ case PRJQUOTA:
+ return 1;
}
return 0;
}
@@ -1394,6 +1394,9 @@ static void __dquot_initialize(struct inode *inode, int type)
/* First get references to structures we might need. */
for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
struct kqid qid;
+ kprojid_t projid;
+ int rc;
+
got[cnt] = NULL;
if (type != -1 && cnt != type)
continue;
@@ -1404,6 +1407,10 @@ static void __dquot_initialize(struct inode *inode, int type)
*/
if (inode->i_dquot[cnt])
continue;
+
+ if (!sb_has_quota_active(sb, cnt))
+ continue;
+
init_needed = 1;
switch (cnt) {
@@ -1413,6 +1420,12 @@ static void __dquot_initialize(struct inode *inode, int type)
case GRPQUOTA:
qid = make_kqid_gid(inode->i_gid);
break;
+ case PRJQUOTA:
+ rc = inode->i_sb->dq_op->get_projid(inode, &projid);
+ if (rc)
+ continue;
+ qid = make_kqid_projid(projid);
+ break;
}
got[cnt] = dqget(sb, qid);
}
@@ -2156,7 +2169,8 @@ static int vfs_load_quota_inode(struct inode *inode, int type, int format_id,
error = -EROFS;
goto out_fmt;
}
- if (!sb->s_op->quota_write || !sb->s_op->quota_read) {
+ if (!sb->s_op->quota_write || !sb->s_op->quota_read ||
+ (type == PRJQUOTA && sb->dq_op->get_projid == NULL)) {
error = -EINVAL;
goto out_fmt;
}
@@ -2397,8 +2411,19 @@ static void do_get_dqblk(struct dquot *dquot, struct fs_disk_quota *di)
memset(di, 0, sizeof(*di));
di->d_version = FS_DQUOT_VERSION;
- di->d_flags = dquot->dq_id.type == USRQUOTA ?
- FS_USER_QUOTA : FS_GROUP_QUOTA;
+ switch (dquot->dq_id.type) {
+ case USRQUOTA:
+ di->d_flags = FS_USER_QUOTA;
+ break;
+ case GRPQUOTA:
+ di->d_flags = FS_GROUP_QUOTA;
+ break;
+ case PRJQUOTA:
+ di->d_flags = FS_PROJ_QUOTA;
+ break;
+ default:
+ BUG();
+ }
di->d_id = from_kqid_munged(current_user_ns(), dquot->dq_id);
spin_lock(&dq_data_lock);
diff --git a/fs/quota/quota.c b/fs/quota/quota.c
index 7562164..795d694 100644
--- a/fs/quota/quota.c
+++ b/fs/quota/quota.c
@@ -30,11 +30,15 @@ static int check_quotactl_permission(struct super_block *sb, int type, int cmd,
case Q_XGETQSTATV:
case Q_XQUOTASYNC:
break;
- /* allow to query information for dquots we "own" */
+ /*
+ * allow to query information for dquots we "own"
+ * always allow querying project quota
+ */
case Q_GETQUOTA:
case Q_XGETQUOTA:
if ((type == USRQUOTA && uid_eq(current_euid(), make_kuid(current_user_ns(), id))) ||
- (type == GRPQUOTA && in_egroup_p(make_kgid(current_user_ns(), id))))
+ (type == GRPQUOTA && in_egroup_p(make_kgid(current_user_ns(), id))) ||
+ (type == PRJQUOTA))
break;
/*FALLTHROUGH*/
default:
diff --git a/fs/quota/quotaio_v2.h b/fs/quota/quotaio_v2.h
index f1966b4..4e95430 100644
--- a/fs/quota/quotaio_v2.h
+++ b/fs/quota/quotaio_v2.h
@@ -13,12 +13,14 @@
*/
#define V2_INITQMAGICS {\
0xd9c01f11, /* USRQUOTA */\
- 0xd9c01927 /* GRPQUOTA */\
+ 0xd9c01927, /* GRPQUOTA */\
+ 0xd9c03f14, /* PRJQUOTA */\
}
#define V2_INITQVERSIONS {\
1, /* USRQUOTA */\
- 1 /* GRPQUOTA */\
+ 1, /* GRPQUOTA */\
+ 1, /* PRJQUOTA */\
}
/* First generic header */
diff --git a/include/linux/quota.h b/include/linux/quota.h
index 80d345a..f1b25f8 100644
--- a/include/linux/quota.h
+++ b/include/linux/quota.h
@@ -50,6 +50,7 @@
#undef USRQUOTA
#undef GRPQUOTA
+#undef PRJQUOTA
enum quota_type {
USRQUOTA = 0, /* element used for user quotas */
GRPQUOTA = 1, /* element used for group quotas */
@@ -312,6 +313,7 @@ struct dquot_operations {
/* get reserved quota for delayed alloc, value returned is managed by
* quota code only */
qsize_t *(*get_reserved_space) (struct inode *);
+ int (*get_projid) (struct inode *, kprojid_t *);/* Get project ID */
};
struct path;
diff --git a/include/uapi/linux/quota.h b/include/uapi/linux/quota.h
index 3b6cfbe..b2d9486 100644
--- a/include/uapi/linux/quota.h
+++ b/include/uapi/linux/quota.h
@@ -36,11 +36,12 @@
#include <linux/errno.h>
#include <linux/types.h>
-#define __DQUOT_VERSION__ "dquot_6.5.2"
+#define __DQUOT_VERSION__ "dquot_6.6.0"
-#define MAXQUOTAS 2
+#define MAXQUOTAS 3
#define USRQUOTA 0 /* element used for user quotas */
#define GRPQUOTA 1 /* element used for group quotas */
+#define PRJQUOTA 2 /* element used for project quotas */
/*
* Definitions for the default names of the quotas files.
@@ -48,6 +49,7 @@
#define INITQFNAMES { \
"user", /* USRQUOTA */ \
"group", /* GRPQUOTA */ \
+ "project", /* PRJQUOTA */ \
"undefined", \
};
--
1.7.1
^ permalink raw reply related [flat|nested] 37+ messages in thread* [v8 2/5] ext4: adds project ID support
2014-12-09 5:22 [v8 0/5] ext4: add project quota support Li Xi
2014-12-09 5:22 ` [v8 1/5] vfs: adds general codes to enforces project quota limits Li Xi
@ 2014-12-09 5:22 ` Li Xi
2015-01-07 23:11 ` Andreas Dilger
[not found] ` <1418102548-5469-3-git-send-email-lixi-LfVdkaOWEx8@public.gmane.org>
2014-12-09 5:22 ` [v8 3/5] ext4: adds project quota support Li Xi
` (3 subsequent siblings)
5 siblings, 2 replies; 37+ messages in thread
From: Li Xi @ 2014-12-09 5:22 UTC (permalink / raw)
To: linux-fsdevel, linux-ext4, linux-api, tytso, adilger, jack, viro,
hch, dmonakhov
This patch adds a new internal field of ext4 inode to save project
identifier. Also a new flag EXT4_INODE_PROJINHERIT is added for
inheriting project ID from parent directory.
Signed-off-by: Li Xi <lixi@ddn.com>
Reviewed-by: Jan Kara <jack@suse.cz>
---
fs/ext4/ext4.h | 21 +++++++++++++++++----
fs/ext4/ialloc.c | 6 ++++++
fs/ext4/inode.c | 29 +++++++++++++++++++++++++++++
fs/ext4/namei.c | 17 +++++++++++++++++
fs/ext4/super.c | 1 +
include/uapi/linux/fs.h | 1 +
6 files changed, 71 insertions(+), 4 deletions(-)
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 29c43e7..8bd1da9 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -377,16 +377,18 @@ struct flex_groups {
#define EXT4_EA_INODE_FL 0x00200000 /* Inode used for large EA */
#define EXT4_EOFBLOCKS_FL 0x00400000 /* Blocks allocated beyond EOF */
#define EXT4_INLINE_DATA_FL 0x10000000 /* Inode has inline data. */
+#define EXT4_PROJINHERIT_FL FS_PROJINHERIT_FL /* Create with parents projid */
#define EXT4_RESERVED_FL 0x80000000 /* reserved for ext4 lib */
-#define EXT4_FL_USER_VISIBLE 0x004BDFFF /* User visible flags */
-#define EXT4_FL_USER_MODIFIABLE 0x004380FF /* User modifiable flags */
+#define EXT4_FL_USER_VISIBLE 0x204BDFFF /* User visible flags */
+#define EXT4_FL_USER_MODIFIABLE 0x204380FF /* User modifiable flags */
/* Flags that should be inherited by new inodes from their parent. */
#define EXT4_FL_INHERITED (EXT4_SECRM_FL | EXT4_UNRM_FL | EXT4_COMPR_FL |\
EXT4_SYNC_FL | EXT4_NODUMP_FL | EXT4_NOATIME_FL |\
EXT4_NOCOMPR_FL | EXT4_JOURNAL_DATA_FL |\
- EXT4_NOTAIL_FL | EXT4_DIRSYNC_FL)
+ EXT4_NOTAIL_FL | EXT4_DIRSYNC_FL |\
+ EXT4_PROJINHERIT_FL)
/* Flags that are appropriate for regular files (all but dir-specific ones). */
#define EXT4_REG_FLMASK (~(EXT4_DIRSYNC_FL | EXT4_TOPDIR_FL))
@@ -434,6 +436,7 @@ enum {
EXT4_INODE_EA_INODE = 21, /* Inode used for large EA */
EXT4_INODE_EOFBLOCKS = 22, /* Blocks allocated beyond EOF */
EXT4_INODE_INLINE_DATA = 28, /* Data in inode. */
+ EXT4_INODE_PROJINHERIT = 29, /* Create with parents projid */
EXT4_INODE_RESERVED = 31, /* reserved for ext4 lib */
};
@@ -683,6 +686,7 @@ struct ext4_inode {
__le32 i_crtime; /* File Creation time */
__le32 i_crtime_extra; /* extra FileCreationtime (nsec << 2 | epoch) */
__le32 i_version_hi; /* high 32 bits for 64-bit version */
+ __le32 i_projid; /* Project ID */
};
struct move_extent {
@@ -934,6 +938,7 @@ struct ext4_inode_info {
/* Precomputed uuid+inum+igen checksum for seeding inode checksums */
__u32 i_csum_seed;
+ kprojid_t i_projid;
};
/*
@@ -1518,6 +1523,7 @@ static inline void ext4_clear_state_flags(struct ext4_inode_info *ei)
* GDT_CSUM bits are mutually exclusive.
*/
#define EXT4_FEATURE_RO_COMPAT_METADATA_CSUM 0x0400
+#define EXT4_FEATURE_RO_COMPAT_PROJECT 0x1000 /* Project quota */
#define EXT4_FEATURE_INCOMPAT_COMPRESSION 0x0001
#define EXT4_FEATURE_INCOMPAT_FILETYPE 0x0002
@@ -1567,7 +1573,8 @@ static inline void ext4_clear_state_flags(struct ext4_inode_info *ei)
EXT4_FEATURE_RO_COMPAT_HUGE_FILE |\
EXT4_FEATURE_RO_COMPAT_BIGALLOC |\
EXT4_FEATURE_RO_COMPAT_METADATA_CSUM|\
- EXT4_FEATURE_RO_COMPAT_QUOTA)
+ EXT4_FEATURE_RO_COMPAT_QUOTA |\
+ EXT4_FEATURE_RO_COMPAT_PROJECT)
/*
* Default values for user and/or group using reserved blocks
@@ -1575,6 +1582,11 @@ static inline void ext4_clear_state_flags(struct ext4_inode_info *ei)
#define EXT4_DEF_RESUID 0
#define EXT4_DEF_RESGID 0
+/*
+ * Default project ID
+ */
+#define EXT4_DEF_PROJID 0
+
#define EXT4_DEF_INODE_READAHEAD_BLKS 32
/*
@@ -2131,6 +2143,7 @@ extern int ext4_zero_partial_blocks(handle_t *handle, struct inode *inode,
loff_t lstart, loff_t lend);
extern int ext4_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf);
extern qsize_t *ext4_get_reserved_space(struct inode *inode);
+extern int ext4_get_projid(struct inode *inode, kprojid_t *projid);
extern void ext4_da_update_reserve_space(struct inode *inode,
int used, int quota_claim);
diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c
index ac644c3..fefb948 100644
--- a/fs/ext4/ialloc.c
+++ b/fs/ext4/ialloc.c
@@ -756,6 +756,12 @@ struct inode *__ext4_new_inode(handle_t *handle, struct inode *dir,
inode->i_gid = dir->i_gid;
} else
inode_init_owner(inode, dir, mode);
+ if (EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_PROJECT) &&
+ ext4_test_inode_flag(dir, EXT4_INODE_PROJINHERIT)) {
+ ei->i_projid = EXT4_I(dir)->i_projid;
+ } else {
+ ei->i_projid = make_kprojid(&init_user_ns, EXT4_DEF_PROJID);
+ }
dquot_initialize(inode);
if (!goal)
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
index 5653fa4..29204d4 100644
--- a/fs/ext4/inode.c
+++ b/fs/ext4/inode.c
@@ -3863,6 +3863,14 @@ static inline void ext4_iget_extra_inode(struct inode *inode,
EXT4_I(inode)->i_inline_off = 0;
}
+int ext4_get_projid(struct inode *inode, kprojid_t *projid)
+{
+ if (!EXT4_HAS_RO_COMPAT_FEATURE(inode->i_sb, EXT4_FEATURE_RO_COMPAT_PROJECT))
+ return -EOPNOTSUPP;
+ *projid = EXT4_I(inode)->i_projid;
+ return 0;
+}
+
struct inode *ext4_iget(struct super_block *sb, unsigned long ino)
{
struct ext4_iloc iloc;
@@ -3874,6 +3882,7 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino)
int block;
uid_t i_uid;
gid_t i_gid;
+ projid_t i_projid;
inode = iget_locked(sb, ino);
if (!inode)
@@ -3923,12 +3932,18 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino)
inode->i_mode = le16_to_cpu(raw_inode->i_mode);
i_uid = (uid_t)le16_to_cpu(raw_inode->i_uid_low);
i_gid = (gid_t)le16_to_cpu(raw_inode->i_gid_low);
+ if (EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_PROJECT))
+ i_projid = (projid_t)le32_to_cpu(raw_inode->i_projid);
+ else
+ i_projid = EXT4_DEF_PROJID;
+
if (!(test_opt(inode->i_sb, NO_UID32))) {
i_uid |= le16_to_cpu(raw_inode->i_uid_high) << 16;
i_gid |= le16_to_cpu(raw_inode->i_gid_high) << 16;
}
i_uid_write(inode, i_uid);
i_gid_write(inode, i_gid);
+ ei->i_projid = make_kprojid(&init_user_ns, i_projid);;
set_nlink(inode, le16_to_cpu(raw_inode->i_links_count));
ext4_clear_state_flags(ei); /* Only relevant on 32-bit archs */
@@ -4158,6 +4173,7 @@ static int ext4_do_update_inode(handle_t *handle,
int need_datasync = 0, set_large_file = 0;
uid_t i_uid;
gid_t i_gid;
+ projid_t i_projid;
spin_lock(&ei->i_raw_lock);
@@ -4170,6 +4186,7 @@ static int ext4_do_update_inode(handle_t *handle,
raw_inode->i_mode = cpu_to_le16(inode->i_mode);
i_uid = i_uid_read(inode);
i_gid = i_gid_read(inode);
+ i_projid = from_kprojid(&init_user_ns, ei->i_projid);
if (!(test_opt(inode->i_sb, NO_UID32))) {
raw_inode->i_uid_low = cpu_to_le16(low_16_bits(i_uid));
raw_inode->i_gid_low = cpu_to_le16(low_16_bits(i_gid));
@@ -4249,6 +4266,18 @@ static int ext4_do_update_inode(handle_t *handle,
}
}
+ BUG_ON(!EXT4_HAS_RO_COMPAT_FEATURE(inode->i_sb,
+ EXT4_FEATURE_RO_COMPAT_PROJECT) &&
+ i_projid != EXT4_DEF_PROJID);
+ if (i_projid != EXT4_DEF_PROJID &&
+ (EXT4_INODE_SIZE(inode->i_sb) <= EXT4_GOOD_OLD_INODE_SIZE ||
+ (!EXT4_FITS_IN_INODE(raw_inode, ei, i_projid)))) {
+ spin_unlock(&ei->i_raw_lock);
+ err = -EFBIG;
+ goto out_brelse;
+ }
+ raw_inode->i_projid = cpu_to_le32(i_projid);
+
ext4_inode_csum_set(inode, raw_inode, ei);
spin_unlock(&ei->i_raw_lock);
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
index 2291923..09e8e55 100644
--- a/fs/ext4/namei.c
+++ b/fs/ext4/namei.c
@@ -2938,6 +2938,11 @@ static int ext4_link(struct dentry *old_dentry,
if (inode->i_nlink >= EXT4_LINK_MAX)
return -EMLINK;
+ if ((ext4_test_inode_flag(dir, EXT4_INODE_PROJINHERIT)) &&
+ (!projid_eq(EXT4_I(dir)->i_projid,
+ EXT4_I(old_dentry->d_inode)->i_projid)))
+ return -EXDEV;
+
dquot_initialize(dir);
retry:
@@ -3217,6 +3222,11 @@ static int ext4_rename(struct inode *old_dir, struct dentry *old_dentry,
int credits;
u8 old_file_type;
+ if ((ext4_test_inode_flag(new_dir, EXT4_INODE_PROJINHERIT)) &&
+ (!projid_eq(EXT4_I(new_dir)->i_projid,
+ EXT4_I(old_dentry->d_inode)->i_projid)))
+ return -EXDEV;
+
dquot_initialize(old.dir);
dquot_initialize(new.dir);
@@ -3395,6 +3405,13 @@ static int ext4_cross_rename(struct inode *old_dir, struct dentry *old_dentry,
u8 new_file_type;
int retval;
+ if ((ext4_test_inode_flag(new_dir, EXT4_INODE_PROJINHERIT)) &&
+ ((!projid_eq(EXT4_I(new_dir)->i_projid,
+ EXT4_I(old_dentry->d_inode)->i_projid)) ||
+ (!projid_eq(EXT4_I(old_dir)->i_projid,
+ EXT4_I(new_dentry->d_inode)->i_projid))))
+ return -EXDEV;
+
dquot_initialize(old.dir);
dquot_initialize(new.dir);
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 4fca81c..6b67795 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -1067,6 +1067,7 @@ static const struct dquot_operations ext4_quota_operations = {
.write_info = ext4_write_info,
.alloc_dquot = dquot_alloc,
.destroy_dquot = dquot_destroy,
+ .get_projid = ext4_get_projid,
};
static const struct quotactl_ops ext4_qctl_operations = {
diff --git a/include/uapi/linux/fs.h b/include/uapi/linux/fs.h
index 3735fa0..fcbf647 100644
--- a/include/uapi/linux/fs.h
+++ b/include/uapi/linux/fs.h
@@ -195,6 +195,7 @@ struct inodes_stat_t {
#define FS_EXTENT_FL 0x00080000 /* Extents */
#define FS_DIRECTIO_FL 0x00100000 /* Use direct i/o */
#define FS_NOCOW_FL 0x00800000 /* Do not cow file */
+#define FS_PROJINHERIT_FL 0x20000000 /* Create with parents projid */
#define FS_RESERVED_FL 0x80000000 /* reserved for ext2 lib */
#define FS_FL_USER_VISIBLE 0x0003DFFF /* User visible flags */
--
1.7.1
^ permalink raw reply related [flat|nested] 37+ messages in thread* Re: [v8 2/5] ext4: adds project ID support
2014-12-09 5:22 ` [v8 2/5] ext4: adds project ID support Li Xi
@ 2015-01-07 23:11 ` Andreas Dilger
2015-01-08 8:51 ` Jan Kara
2015-01-15 7:52 ` Li Xi
[not found] ` <1418102548-5469-3-git-send-email-lixi-LfVdkaOWEx8@public.gmane.org>
1 sibling, 2 replies; 37+ messages in thread
From: Andreas Dilger @ 2015-01-07 23:11 UTC (permalink / raw)
To: Li Xi
Cc: linux-fsdevel, linux-ext4, linux-api, tytso, jack, viro, hch, dmonakhov
On Dec 8, 2014, at 10:22 PM, Li Xi <pkuelelixi@gmail.com> wrote:
> This patch adds a new internal field of ext4 inode to save project
> identifier. Also a new flag EXT4_INODE_PROJINHERIT is added for
> inheriting project ID from parent directory.
>
> Signed-off-by: Li Xi <lixi@ddn.com>
> Reviewed-by: Jan Kara <jack@suse.cz>
> ---
> fs/ext4/ext4.h | 21 +++++++++++++++++----
> fs/ext4/ialloc.c | 6 ++++++
> fs/ext4/inode.c | 29 +++++++++++++++++++++++++++++
> fs/ext4/namei.c | 17 +++++++++++++++++
> fs/ext4/super.c | 1 +
> include/uapi/linux/fs.h | 1 +
> 6 files changed, 71 insertions(+), 4 deletions(-)
>
> diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
> index 29c43e7..8bd1da9 100644
> --- a/fs/ext4/ext4.h
> +++ b/fs/ext4/ext4.h
> @@ -377,16 +377,18 @@ struct flex_groups {
> #define EXT4_EA_INODE_FL 0x00200000 /* Inode used for large EA */
> #define EXT4_EOFBLOCKS_FL 0x00400000 /* Blocks allocated beyond EOF */
> #define EXT4_INLINE_DATA_FL 0x10000000 /* Inode has inline data. */
> +#define EXT4_PROJINHERIT_FL FS_PROJINHERIT_FL /* Create with parents projid */
Sigh, only a single on-disk inode flag unused.
> #define EXT4_RESERVED_FL 0x80000000 /* reserved for ext4 lib */
>
> -#define EXT4_FL_USER_VISIBLE 0x004BDFFF /* User visible flags */
> -#define EXT4_FL_USER_MODIFIABLE 0x004380FF /* User modifiable flags */
> +#define EXT4_FL_USER_VISIBLE 0x204BDFFF /* User visible flags */
> +#define EXT4_FL_USER_MODIFIABLE 0x204380FF /* User modifiable flags */
>
> /* Flags that should be inherited by new inodes from their parent. */
> #define EXT4_FL_INHERITED (EXT4_SECRM_FL | EXT4_UNRM_FL | EXT4_COMPR_FL |\
> EXT4_SYNC_FL | EXT4_NODUMP_FL | EXT4_NOATIME_FL |\
> EXT4_NOCOMPR_FL | EXT4_JOURNAL_DATA_FL |\
> - EXT4_NOTAIL_FL | EXT4_DIRSYNC_FL)
> + EXT4_NOTAIL_FL | EXT4_DIRSYNC_FL |\
> + EXT4_PROJINHERIT_FL)
>
> /* Flags that are appropriate for regular files (all but dir-specific ones). */
> #define EXT4_REG_FLMASK (~(EXT4_DIRSYNC_FL | EXT4_TOPDIR_FL))
> @@ -434,6 +436,7 @@ enum {
> EXT4_INODE_EA_INODE = 21, /* Inode used for large EA */
> EXT4_INODE_EOFBLOCKS = 22, /* Blocks allocated beyond EOF */
> EXT4_INODE_INLINE_DATA = 28, /* Data in inode. */
> + EXT4_INODE_PROJINHERIT = 29, /* Create with parents projid */
> EXT4_INODE_RESERVED = 31, /* reserved for ext4 lib */
> };
>
> @@ -683,6 +686,7 @@ struct ext4_inode {
> __le32 i_crtime; /* File Creation time */
> __le32 i_crtime_extra; /* extra FileCreationtime (nsec << 2 | epoch) */
> __le32 i_version_hi; /* high 32 bits for 64-bit version */
> + __le32 i_projid; /* Project ID */
> };
>
> struct move_extent {
> @@ -934,6 +938,7 @@ struct ext4_inode_info {
>
> /* Precomputed uuid+inum+igen checksum for seeding inode checksums */
> __u32 i_csum_seed;
> + kprojid_t i_projid;
> };
>
> /*
> @@ -1518,6 +1523,7 @@ static inline void ext4_clear_state_flags(struct ext4_inode_info *ei)
> * GDT_CSUM bits are mutually exclusive.
> */
> #define EXT4_FEATURE_RO_COMPAT_METADATA_CSUM 0x0400
> +#define EXT4_FEATURE_RO_COMPAT_PROJECT 0x1000 /* Project quota */
I wonder if it makes sense to add EXT4_FEATURE_RO_COMPAT_METADATA_CSUM
here as well, to make it clear why this is skipping a value?
> #define EXT4_FEATURE_INCOMPAT_COMPRESSION 0x0001
> #define EXT4_FEATURE_INCOMPAT_FILETYPE 0x0002
> @@ -1567,7 +1573,8 @@ static inline void ext4_clear_state_flags(struct ext4_inode_info *ei)
> EXT4_FEATURE_RO_COMPAT_HUGE_FILE |\
> EXT4_FEATURE_RO_COMPAT_BIGALLOC |\
> EXT4_FEATURE_RO_COMPAT_METADATA_CSUM|\
> - EXT4_FEATURE_RO_COMPAT_QUOTA)
> + EXT4_FEATURE_RO_COMPAT_QUOTA |\
> + EXT4_FEATURE_RO_COMPAT_PROJECT)
>
> /*
> * Default values for user and/or group using reserved blocks
> @@ -1575,6 +1582,11 @@ static inline void ext4_clear_state_flags(struct ext4_inode_info *ei)
> #define EXT4_DEF_RESUID 0
> #define EXT4_DEF_RESGID 0
>
> +/*
> + * Default project ID
> + */
> +#define EXT4_DEF_PROJID 0
> +
> #define EXT4_DEF_INODE_READAHEAD_BLKS 32
>
> /*
> @@ -2131,6 +2143,7 @@ extern int ext4_zero_partial_blocks(handle_t *handle, struct inode *inode,
> loff_t lstart, loff_t lend);
> extern int ext4_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf);
> extern qsize_t *ext4_get_reserved_space(struct inode *inode);
> +extern int ext4_get_projid(struct inode *inode, kprojid_t *projid);
> extern void ext4_da_update_reserve_space(struct inode *inode,
> int used, int quota_claim);
>
> diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c
> index ac644c3..fefb948 100644
> --- a/fs/ext4/ialloc.c
> +++ b/fs/ext4/ialloc.c
> @@ -756,6 +756,12 @@ struct inode *__ext4_new_inode(handle_t *handle, struct inode *dir,
> inode->i_gid = dir->i_gid;
> } else
> inode_init_owner(inode, dir, mode);
> + if (EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_PROJECT) &&
> + ext4_test_inode_flag(dir, EXT4_INODE_PROJINHERIT)) {
> + ei->i_projid = EXT4_I(dir)->i_projid;
> + } else {
> + ei->i_projid = make_kprojid(&init_user_ns, EXT4_DEF_PROJID);
> + }
(style) no need for { } if only a single line in both if/else parts.
> dquot_initialize(inode);
>
> if (!goal)
> diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
> index 5653fa4..29204d4 100644
> --- a/fs/ext4/inode.c
> +++ b/fs/ext4/inode.c
> @@ -3863,6 +3863,14 @@ static inline void ext4_iget_extra_inode(struct inode *inode,
> EXT4_I(inode)->i_inline_off = 0;
> }
>
> +int ext4_get_projid(struct inode *inode, kprojid_t *projid)
> +{
> + if (!EXT4_HAS_RO_COMPAT_FEATURE(inode->i_sb, EXT4_FEATURE_RO_COMPAT_PROJECT))
> + return -EOPNOTSUPP;
> + *projid = EXT4_I(inode)->i_projid;
> + return 0;
> +}
> +
> struct inode *ext4_iget(struct super_block *sb, unsigned long ino)
> {
> struct ext4_iloc iloc;
> @@ -3874,6 +3882,7 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino)
> int block;
> uid_t i_uid;
> gid_t i_gid;
> + projid_t i_projid;
>
> inode = iget_locked(sb, ino);
> if (!inode)
> @@ -3923,12 +3932,18 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino)
> inode->i_mode = le16_to_cpu(raw_inode->i_mode);
> i_uid = (uid_t)le16_to_cpu(raw_inode->i_uid_low);
> i_gid = (gid_t)le16_to_cpu(raw_inode->i_gid_low);
> + if (EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_PROJECT))
> + i_projid = (projid_t)le32_to_cpu(raw_inode->i_projid);
> + else
> + i_projid = EXT4_DEF_PROJID;
> +
> if (!(test_opt(inode->i_sb, NO_UID32))) {
> i_uid |= le16_to_cpu(raw_inode->i_uid_high) << 16;
> i_gid |= le16_to_cpu(raw_inode->i_gid_high) << 16;
> }
> i_uid_write(inode, i_uid);
> i_gid_write(inode, i_gid);
> + ei->i_projid = make_kprojid(&init_user_ns, i_projid);;
> set_nlink(inode, le16_to_cpu(raw_inode->i_links_count));
>
> ext4_clear_state_flags(ei); /* Only relevant on 32-bit archs */
> @@ -4158,6 +4173,7 @@ static int ext4_do_update_inode(handle_t *handle,
> int need_datasync = 0, set_large_file = 0;
> uid_t i_uid;
> gid_t i_gid;
> + projid_t i_projid;
>
> spin_lock(&ei->i_raw_lock);
>
> @@ -4170,6 +4186,7 @@ static int ext4_do_update_inode(handle_t *handle,
> raw_inode->i_mode = cpu_to_le16(inode->i_mode);
> i_uid = i_uid_read(inode);
> i_gid = i_gid_read(inode);
> + i_projid = from_kprojid(&init_user_ns, ei->i_projid);
> if (!(test_opt(inode->i_sb, NO_UID32))) {
> raw_inode->i_uid_low = cpu_to_le16(low_16_bits(i_uid));
> raw_inode->i_gid_low = cpu_to_le16(low_16_bits(i_gid));
> @@ -4249,6 +4266,18 @@ static int ext4_do_update_inode(handle_t *handle,
> }
> }
>
> + BUG_ON(!EXT4_HAS_RO_COMPAT_FEATURE(inode->i_sb,
> + EXT4_FEATURE_RO_COMPAT_PROJECT) &&
> + i_projid != EXT4_DEF_PROJID);
> + if (i_projid != EXT4_DEF_PROJID &&
> + (EXT4_INODE_SIZE(inode->i_sb) <= EXT4_GOOD_OLD_INODE_SIZE ||
> + (!EXT4_FITS_IN_INODE(raw_inode, ei, i_projid)))) {
> + spin_unlock(&ei->i_raw_lock);
> + err = -EFBIG;
I'm not sure if -EFBIG is the best error case, since that is a common
filesystem error. Maybe -EOVERFLOW would be better?
Also, returning the error from ext4_mark_iloc_dirty->ext4_do_update_inode()
is a bit late in the game, since the inode has already been modified at
this point. That callpath typically only returned an error if the disk
was bad or the journal aborted (again normally because the disk was bad),
so at that point the dirty in-memory data was lost anyway.
It would be better to check this in the caller before the inode is changed
so that an error can be returned without (essentially) corrupting the
in-memory state. Since the projid should only be set for new inodes (which
will always have enough space, assuming RO_COMPAT_PROJECT cannot be set on
filesystems with 128-byte inodes), or in case of rename into a project
directory, it shouldn't be too big a change.
> + goto out_brelse;
> + }
> + raw_inode->i_projid = cpu_to_le32(i_projid);
> +
> ext4_inode_csum_set(inode, raw_inode, ei);
>
> spin_unlock(&ei->i_raw_lock);
> diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c
> index 2291923..09e8e55 100644
> --- a/fs/ext4/namei.c
> +++ b/fs/ext4/namei.c
> @@ -2938,6 +2938,11 @@ static int ext4_link(struct dentry *old_dentry,
> if (inode->i_nlink >= EXT4_LINK_MAX)
> return -EMLINK;
>
> + if ((ext4_test_inode_flag(dir, EXT4_INODE_PROJINHERIT)) &&
> + (!projid_eq(EXT4_I(dir)->i_projid,
> + EXT4_I(old_dentry->d_inode)->i_projid)))
> + return -EXDEV;
> +
> dquot_initialize(dir);
>
> retry:
> @@ -3217,6 +3222,11 @@ static int ext4_rename(struct inode *old_dir, struct dentry *old_dentry,
> int credits;
> u8 old_file_type;
>
> + if ((ext4_test_inode_flag(new_dir, EXT4_INODE_PROJINHERIT)) &&
> + (!projid_eq(EXT4_I(new_dir)->i_projid,
> + EXT4_I(old_dentry->d_inode)->i_projid)))
> + return -EXDEV;
> +
> dquot_initialize(old.dir);
> dquot_initialize(new.dir);
>
> @@ -3395,6 +3405,13 @@ static int ext4_cross_rename(struct inode *old_dir, struct dentry *old_dentry,
> u8 new_file_type;
> int retval;
>
> + if ((ext4_test_inode_flag(new_dir, EXT4_INODE_PROJINHERIT)) &&
> + ((!projid_eq(EXT4_I(new_dir)->i_projid,
> + EXT4_I(old_dentry->d_inode)->i_projid)) ||
> + (!projid_eq(EXT4_I(old_dir)->i_projid,
> + EXT4_I(new_dentry->d_inode)->i_projid))))
> + return -EXDEV;
> +
> dquot_initialize(old.dir);
> dquot_initialize(new.dir);
>
> diff --git a/fs/ext4/super.c b/fs/ext4/super.c
> index 4fca81c..6b67795 100644
> --- a/fs/ext4/super.c
> +++ b/fs/ext4/super.c
> @@ -1067,6 +1067,7 @@ static const struct dquot_operations ext4_quota_operations = {
> .write_info = ext4_write_info,
> .alloc_dquot = dquot_alloc,
> .destroy_dquot = dquot_destroy,
> + .get_projid = ext4_get_projid,
> };
>
> static const struct quotactl_ops ext4_qctl_operations = {
> diff --git a/include/uapi/linux/fs.h b/include/uapi/linux/fs.h
> index 3735fa0..fcbf647 100644
> --- a/include/uapi/linux/fs.h
> +++ b/include/uapi/linux/fs.h
> @@ -195,6 +195,7 @@ struct inodes_stat_t {
> #define FS_EXTENT_FL 0x00080000 /* Extents */
> #define FS_DIRECTIO_FL 0x00100000 /* Use direct i/o */
> #define FS_NOCOW_FL 0x00800000 /* Do not cow file */
> +#define FS_PROJINHERIT_FL 0x20000000 /* Create with parents projid */
> #define FS_RESERVED_FL 0x80000000 /* reserved for ext2 lib */
>
> #define FS_FL_USER_VISIBLE 0x0003DFFF /* User visible flags */
> --
> 1.7.1
>
Cheers, Andreas
^ permalink raw reply [flat|nested] 37+ messages in thread* Re: [v8 2/5] ext4: adds project ID support
2015-01-07 23:11 ` Andreas Dilger
@ 2015-01-08 8:51 ` Jan Kara
2015-01-15 7:52 ` Li Xi
1 sibling, 0 replies; 37+ messages in thread
From: Jan Kara @ 2015-01-08 8:51 UTC (permalink / raw)
To: Andreas Dilger
Cc: Li Xi, linux-fsdevel, linux-ext4, linux-api, tytso, jack, viro,
hch, dmonakhov
On Wed 07-01-15 16:11:16, Andreas Dilger wrote:
> On Dec 8, 2014, at 10:22 PM, Li Xi <pkuelelixi@gmail.com> wrote:
> > This patch adds a new internal field of ext4 inode to save project
> > identifier. Also a new flag EXT4_INODE_PROJINHERIT is added for
> > inheriting project ID from parent directory.
> >
> > Signed-off-by: Li Xi <lixi@ddn.com>
> > Reviewed-by: Jan Kara <jack@suse.cz>
> > ---
...
> > @@ -4249,6 +4266,18 @@ static int ext4_do_update_inode(handle_t *handle,
> > }
> > }
> >
> > + BUG_ON(!EXT4_HAS_RO_COMPAT_FEATURE(inode->i_sb,
> > + EXT4_FEATURE_RO_COMPAT_PROJECT) &&
> > + i_projid != EXT4_DEF_PROJID);
> > + if (i_projid != EXT4_DEF_PROJID &&
> > + (EXT4_INODE_SIZE(inode->i_sb) <= EXT4_GOOD_OLD_INODE_SIZE ||
> > + (!EXT4_FITS_IN_INODE(raw_inode, ei, i_projid)))) {
> > + spin_unlock(&ei->i_raw_lock);
> > + err = -EFBIG;
>
> I'm not sure if -EFBIG is the best error case, since that is a common
> filesystem error. Maybe -EOVERFLOW would be better?
So my thought has been that this is mostly a sanity check and we would
check in tune2fs whether all inodes have enough space when setting
EXT4_FEATURE_RO_COMPAT_PROJECT feature... Because sudden errors (regardless
whether it will be EFBIG or EOVERFLOW) when renaming files will be hard to
understand for sysadmins IMHO.
Honza
--
Jan Kara <jack@suse.cz>
SUSE Labs, CR
^ permalink raw reply [flat|nested] 37+ messages in thread* Re: [v8 2/5] ext4: adds project ID support
2015-01-07 23:11 ` Andreas Dilger
2015-01-08 8:51 ` Jan Kara
@ 2015-01-15 7:52 ` Li Xi
1 sibling, 0 replies; 37+ messages in thread
From: Li Xi @ 2015-01-15 7:52 UTC (permalink / raw)
To: Andreas Dilger
Cc: linux-fsdevel, Ext4 Developers List, linux-api,
Theodore Ts'o, Jan Kara, viro, hch, Dmitry Monakhov
On Thu, Jan 8, 2015 at 7:11 AM, Andreas Dilger <adilger@dilger.ca> wrote:
> On Dec 8, 2014, at 10:22 PM, Li Xi <pkuelelixi@gmail.com> wrote:
>> This patch adds a new internal field of ext4 inode to save project
>> identifier. Also a new flag EXT4_INODE_PROJINHERIT is added for
>> inheriting project ID from parent directory.
>>
>> Signed-off-by: Li Xi <lixi@ddn.com>
>> Reviewed-by: Jan Kara <jack@suse.cz>
>> ---
>> fs/ext4/ext4.h | 21 +++++++++++++++++----
>> fs/ext4/ialloc.c | 6 ++++++
>> fs/ext4/inode.c | 29 +++++++++++++++++++++++++++++
>> fs/ext4/namei.c | 17 +++++++++++++++++
>> fs/ext4/super.c | 1 +
>> include/uapi/linux/fs.h | 1 +
>> 6 files changed, 71 insertions(+), 4 deletions(-)
>>
>> diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
>> index 29c43e7..8bd1da9 100644
>> --- a/fs/ext4/ext4.h
>> +++ b/fs/ext4/ext4.h
>> @@ -377,16 +377,18 @@ struct flex_groups {
>> #define EXT4_EA_INODE_FL 0x00200000 /* Inode used for large EA */
>> #define EXT4_EOFBLOCKS_FL 0x00400000 /* Blocks allocated beyond EOF */
>> #define EXT4_INLINE_DATA_FL 0x10000000 /* Inode has inline data. */
>> +#define EXT4_PROJINHERIT_FL FS_PROJINHERIT_FL /* Create with parents projid */
>
> Sigh, only a single on-disk inode flag unused.
>
>> #define EXT4_RESERVED_FL 0x80000000 /* reserved for ext4 lib */
>>
>> -#define EXT4_FL_USER_VISIBLE 0x004BDFFF /* User visible flags */
>> -#define EXT4_FL_USER_MODIFIABLE 0x004380FF /* User modifiable flags */
>> +#define EXT4_FL_USER_VISIBLE 0x204BDFFF /* User visible flags */
>> +#define EXT4_FL_USER_MODIFIABLE 0x204380FF /* User modifiable flags */
>>
>> /* Flags that should be inherited by new inodes from their parent. */
>> #define EXT4_FL_INHERITED (EXT4_SECRM_FL | EXT4_UNRM_FL | EXT4_COMPR_FL |\
>> EXT4_SYNC_FL | EXT4_NODUMP_FL | EXT4_NOATIME_FL |\
>> EXT4_NOCOMPR_FL | EXT4_JOURNAL_DATA_FL |\
>> - EXT4_NOTAIL_FL | EXT4_DIRSYNC_FL)
>> + EXT4_NOTAIL_FL | EXT4_DIRSYNC_FL |\
>> + EXT4_PROJINHERIT_FL)
>>
>> /* Flags that are appropriate for regular files (all but dir-specific ones). */
>> #define EXT4_REG_FLMASK (~(EXT4_DIRSYNC_FL | EXT4_TOPDIR_FL))
>> @@ -434,6 +436,7 @@ enum {
>> EXT4_INODE_EA_INODE = 21, /* Inode used for large EA */
>> EXT4_INODE_EOFBLOCKS = 22, /* Blocks allocated beyond EOF */
>> EXT4_INODE_INLINE_DATA = 28, /* Data in inode. */
>> + EXT4_INODE_PROJINHERIT = 29, /* Create with parents projid */
>> EXT4_INODE_RESERVED = 31, /* reserved for ext4 lib */
>> };
>>
>> @@ -683,6 +686,7 @@ struct ext4_inode {
>> __le32 i_crtime; /* File Creation time */
>> __le32 i_crtime_extra; /* extra FileCreationtime (nsec << 2 | epoch) */
>> __le32 i_version_hi; /* high 32 bits for 64-bit version */
>> + __le32 i_projid; /* Project ID */
>> };
>>
>> struct move_extent {
>> @@ -934,6 +938,7 @@ struct ext4_inode_info {
>>
>> /* Precomputed uuid+inum+igen checksum for seeding inode checksums */
>> __u32 i_csum_seed;
>> + kprojid_t i_projid;
>> };
>>
>> /*
>> @@ -1518,6 +1523,7 @@ static inline void ext4_clear_state_flags(struct ext4_inode_info *ei)
>> * GDT_CSUM bits are mutually exclusive.
>> */
>> #define EXT4_FEATURE_RO_COMPAT_METADATA_CSUM 0x0400
>> +#define EXT4_FEATURE_RO_COMPAT_PROJECT 0x1000 /* Project quota */
>
> I wonder if it makes sense to add EXT4_FEATURE_RO_COMPAT_METADATA_CSUM
> here as well, to make it clear why this is skipping a value?
>
>> #define EXT4_FEATURE_INCOMPAT_COMPRESSION 0x0001
>> #define EXT4_FEATURE_INCOMPAT_FILETYPE 0x0002
>> @@ -1567,7 +1573,8 @@ static inline void ext4_clear_state_flags(struct ext4_inode_info *ei)
>> EXT4_FEATURE_RO_COMPAT_HUGE_FILE |\
>> EXT4_FEATURE_RO_COMPAT_BIGALLOC |\
>> EXT4_FEATURE_RO_COMPAT_METADATA_CSUM|\
>> - EXT4_FEATURE_RO_COMPAT_QUOTA)
>> + EXT4_FEATURE_RO_COMPAT_QUOTA |\
>> + EXT4_FEATURE_RO_COMPAT_PROJECT)
>>
>> /*
>> * Default values for user and/or group using reserved blocks
>> @@ -1575,6 +1582,11 @@ static inline void ext4_clear_state_flags(struct ext4_inode_info *ei)
>> #define EXT4_DEF_RESUID 0
>> #define EXT4_DEF_RESGID 0
>>
>> +/*
>> + * Default project ID
>> + */
>> +#define EXT4_DEF_PROJID 0
>> +
>> #define EXT4_DEF_INODE_READAHEAD_BLKS 32
>>
>> /*
>> @@ -2131,6 +2143,7 @@ extern int ext4_zero_partial_blocks(handle_t *handle, struct inode *inode,
>> loff_t lstart, loff_t lend);
>> extern int ext4_page_mkwrite(struct vm_area_struct *vma, struct vm_fault *vmf);
>> extern qsize_t *ext4_get_reserved_space(struct inode *inode);
>> +extern int ext4_get_projid(struct inode *inode, kprojid_t *projid);
>> extern void ext4_da_update_reserve_space(struct inode *inode,
>> int used, int quota_claim);
>>
>> diff --git a/fs/ext4/ialloc.c b/fs/ext4/ialloc.c
>> index ac644c3..fefb948 100644
>> --- a/fs/ext4/ialloc.c
>> +++ b/fs/ext4/ialloc.c
>> @@ -756,6 +756,12 @@ struct inode *__ext4_new_inode(handle_t *handle, struct inode *dir,
>> inode->i_gid = dir->i_gid;
>> } else
>> inode_init_owner(inode, dir, mode);
>> + if (EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_PROJECT) &&
>> + ext4_test_inode_flag(dir, EXT4_INODE_PROJINHERIT)) {
>> + ei->i_projid = EXT4_I(dir)->i_projid;
>> + } else {
>> + ei->i_projid = make_kprojid(&init_user_ns, EXT4_DEF_PROJID);
>> + }
>
> (style) no need for { } if only a single line in both if/else parts.
>
>> dquot_initialize(inode);
>>
>> if (!goal)
>> diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c
>> index 5653fa4..29204d4 100644
>> --- a/fs/ext4/inode.c
>> +++ b/fs/ext4/inode.c
>> @@ -3863,6 +3863,14 @@ static inline void ext4_iget_extra_inode(struct inode *inode,
>> EXT4_I(inode)->i_inline_off = 0;
>> }
>>
>> +int ext4_get_projid(struct inode *inode, kprojid_t *projid)
>> +{
>> + if (!EXT4_HAS_RO_COMPAT_FEATURE(inode->i_sb, EXT4_FEATURE_RO_COMPAT_PROJECT))
>> + return -EOPNOTSUPP;
>> + *projid = EXT4_I(inode)->i_projid;
>> + return 0;
>> +}
>> +
>> struct inode *ext4_iget(struct super_block *sb, unsigned long ino)
>> {
>> struct ext4_iloc iloc;
>> @@ -3874,6 +3882,7 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino)
>> int block;
>> uid_t i_uid;
>> gid_t i_gid;
>> + projid_t i_projid;
>>
>> inode = iget_locked(sb, ino);
>> if (!inode)
>> @@ -3923,12 +3932,18 @@ struct inode *ext4_iget(struct super_block *sb, unsigned long ino)
>> inode->i_mode = le16_to_cpu(raw_inode->i_mode);
>> i_uid = (uid_t)le16_to_cpu(raw_inode->i_uid_low);
>> i_gid = (gid_t)le16_to_cpu(raw_inode->i_gid_low);
>> + if (EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_PROJECT))
>> + i_projid = (projid_t)le32_to_cpu(raw_inode->i_projid);
>> + else
>> + i_projid = EXT4_DEF_PROJID;
>> +
>> if (!(test_opt(inode->i_sb, NO_UID32))) {
>> i_uid |= le16_to_cpu(raw_inode->i_uid_high) << 16;
>> i_gid |= le16_to_cpu(raw_inode->i_gid_high) << 16;
>> }
>> i_uid_write(inode, i_uid);
>> i_gid_write(inode, i_gid);
>> + ei->i_projid = make_kprojid(&init_user_ns, i_projid);;
>> set_nlink(inode, le16_to_cpu(raw_inode->i_links_count));
>>
>> ext4_clear_state_flags(ei); /* Only relevant on 32-bit archs */
>> @@ -4158,6 +4173,7 @@ static int ext4_do_update_inode(handle_t *handle,
>> int need_datasync = 0, set_large_file = 0;
>> uid_t i_uid;
>> gid_t i_gid;
>> + projid_t i_projid;
>>
>> spin_lock(&ei->i_raw_lock);
>>
>> @@ -4170,6 +4186,7 @@ static int ext4_do_update_inode(handle_t *handle,
>> raw_inode->i_mode = cpu_to_le16(inode->i_mode);
>> i_uid = i_uid_read(inode);
>> i_gid = i_gid_read(inode);
>> + i_projid = from_kprojid(&init_user_ns, ei->i_projid);
>> if (!(test_opt(inode->i_sb, NO_UID32))) {
>> raw_inode->i_uid_low = cpu_to_le16(low_16_bits(i_uid));
>> raw_inode->i_gid_low = cpu_to_le16(low_16_bits(i_gid));
>> @@ -4249,6 +4266,18 @@ static int ext4_do_update_inode(handle_t *handle,
>> }
>> }
>>
>> + BUG_ON(!EXT4_HAS_RO_COMPAT_FEATURE(inode->i_sb,
>> + EXT4_FEATURE_RO_COMPAT_PROJECT) &&
>> + i_projid != EXT4_DEF_PROJID);
>> + if (i_projid != EXT4_DEF_PROJID &&
>> + (EXT4_INODE_SIZE(inode->i_sb) <= EXT4_GOOD_OLD_INODE_SIZE ||
>> + (!EXT4_FITS_IN_INODE(raw_inode, ei, i_projid)))) {
>> + spin_unlock(&ei->i_raw_lock);
>> + err = -EFBIG;
>
> I'm not sure if -EFBIG is the best error case, since that is a common
> filesystem error. Maybe -EOVERFLOW would be better?
>
> Also, returning the error from ext4_mark_iloc_dirty->ext4_do_update_inode()
> is a bit late in the game, since the inode has already been modified at
> this point. That callpath typically only returned an error if the disk
> was bad or the journal aborted (again normally because the disk was bad),
> so at that point the dirty in-memory data was lost anyway.
>
> It would be better to check this in the caller before the inode is changed
> so that an error can be returned without (essentially) corrupting the
> in-memory state. Since the projid should only be set for new inodes (which
> will always have enough space, assuming RO_COMPAT_PROJECT cannot be set on
> filesystems with 128-byte inodes), or in case of rename into a project
> directory, it shouldn't be too big a change.
Sorry, I am not sure what I should do to improve this because of the reason that
Jan Kara mentioned. Please let me know if I need to do anything about this.
^ permalink raw reply [flat|nested] 37+ messages in thread
[parent not found: <1418102548-5469-3-git-send-email-lixi-LfVdkaOWEx8@public.gmane.org>]
* Re: [v8 2/5] ext4: adds project ID support
[not found] ` <1418102548-5469-3-git-send-email-lixi-LfVdkaOWEx8@public.gmane.org>
@ 2015-01-08 8:26 ` Jan Kara
2015-01-08 22:20 ` Andreas Dilger
0 siblings, 1 reply; 37+ messages in thread
From: Jan Kara @ 2015-01-08 8:26 UTC (permalink / raw)
To: Li Xi
Cc: linux-fsdevel-u79uwXL29TY76Z2rM5mHXA,
linux-ext4-u79uwXL29TY76Z2rM5mHXA,
linux-api-u79uwXL29TY76Z2rM5mHXA, tytso-3s7WtUTddSA,
adilger-m1MBpc4rdrD3fQ9qLvQP4Q, jack-AlSwsSmVLrQ,
viro-RmSDqhL/yNMiFSDQTTA3OLVCufUGDwFn,
hch-wEGCiKHe2LqWVfeAwA7xHQ, dmonakhov-GEFAQzZX7r8dnm+yROfE0A
On Tue 09-12-14 13:22:25, Li Xi wrote:
> This patch adds a new internal field of ext4 inode to save project
> identifier. Also a new flag EXT4_INODE_PROJINHERIT is added for
> inheriting project ID from parent directory.
I have noticed one thing you apparently changed in v7 of the patch set.
See below.
> Signed-off-by: Li Xi <lixi-LfVdkaOWEx8@public.gmane.org>
> Reviewed-by: Jan Kara <jack-AlSwsSmVLrQ@public.gmane.org>
> ---
> fs/ext4/ext4.h | 21 +++++++++++++++++----
> fs/ext4/ialloc.c | 6 ++++++
> fs/ext4/inode.c | 29 +++++++++++++++++++++++++++++
> fs/ext4/namei.c | 17 +++++++++++++++++
> fs/ext4/super.c | 1 +
> include/uapi/linux/fs.h | 1 +
> 6 files changed, 71 insertions(+), 4 deletions(-)
>
> diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
> index 29c43e7..8bd1da9 100644
> --- a/fs/ext4/ext4.h
> +++ b/fs/ext4/ext4.h
> @@ -377,16 +377,18 @@ struct flex_groups {
> #define EXT4_EA_INODE_FL 0x00200000 /* Inode used for large EA */
> #define EXT4_EOFBLOCKS_FL 0x00400000 /* Blocks allocated beyond EOF */
> #define EXT4_INLINE_DATA_FL 0x10000000 /* Inode has inline data. */
> +#define EXT4_PROJINHERIT_FL FS_PROJINHERIT_FL /* Create with parents projid */
How did FS_PROJINHERIT_FL get here? There used to be 0x20000000 in older
version of the patch set which is correct - this definition is defining
ext4 on-disk format. As such it is an ext4 specific flag and should be
definined to a fixed constant independed of any other filesystem. It seems
you are somewhat mixing what is an on-disk format flag value and what is a
flag value passed from userspace. These two may be different things and you
need to convert between the values when getting / setting flags...
Honza
--
Jan Kara <jack-AlSwsSmVLrQ@public.gmane.org>
SUSE Labs, CR
^ permalink raw reply [flat|nested] 37+ messages in thread* Re: [v8 2/5] ext4: adds project ID support
2015-01-08 8:26 ` Jan Kara
@ 2015-01-08 22:20 ` Andreas Dilger
2015-01-09 9:47 ` Jan Kara
0 siblings, 1 reply; 37+ messages in thread
From: Andreas Dilger @ 2015-01-08 22:20 UTC (permalink / raw)
To: Jan Kara
Cc: Li Xi, Linux Filesystem Development List, ext4 development,
linux-api, Theodore Ts'o, Al Viro, Christoph Hellwig,
Dmitry Monakhov
On Jan 8, 2015, at 1:26 AM, Jan Kara <jack@suse.cz> wrote:
> On Tue 09-12-14 13:22:25, Li Xi wrote:
>> This patch adds a new internal field of ext4 inode to save project
>> identifier. Also a new flag EXT4_INODE_PROJINHERIT is added for
>> inheriting project ID from parent directory.
> I have noticed one thing you apparently changed in v7 of the patch set.
> See below.
>
>> diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
>> index 29c43e7..8bd1da9 100644
>> --- a/fs/ext4/ext4.h
>> +++ b/fs/ext4/ext4.h
>> @@ -377,16 +377,18 @@ struct flex_groups {
>> #define EXT4_EA_INODE_FL 0x00200000 /* Inode used for large EA */
>> #define EXT4_EOFBLOCKS_FL 0x00400000 /* Blocks allocated beyond EOF */
>> #define EXT4_INLINE_DATA_FL 0x10000000 /* Inode has inline data. */
>> +#define EXT4_PROJINHERIT_FL FS_PROJINHERIT_FL /* Create with parents projid */
> How did FS_PROJINHERIT_FL get here? There used to be 0x20000000 in older
> version of the patch set which is correct - this definition is defining
> ext4 on-disk format. As such it is an ext4 specific flag and should be
> definined to a fixed constant independed of any other filesystem. It seems
> you are somewhat mixing what is an on-disk format flag value and what is a
> flag value passed from userspace. These two may be different things and
> you need to convert between the values when getting / setting flags...
Currently the EXT4_*_FL and FS_*_FL values are all identical, and there
is no reason to change that before it is actually needed. Since the
FS_PROJINHERIT_FL is used via chattr/lsattr from userspace, this value
must also be kept the same in the future to avoid API breakage, so there
is no reason to worry about incompatibilities.
See also the [v8 5/5] patch, which is changing the EXT4_*_FL values to
use FS_*_FL constants, where applicable, so that it is more clear that
these values need to be the same.
Cheers, Andreas
^ permalink raw reply [flat|nested] 37+ messages in thread* Re: [v8 2/5] ext4: adds project ID support
2015-01-08 22:20 ` Andreas Dilger
@ 2015-01-09 9:47 ` Jan Kara
[not found] ` <20150109094758.GA2576-+0h/O2h83AeN3ZZ/Hiejyg@public.gmane.org>
0 siblings, 1 reply; 37+ messages in thread
From: Jan Kara @ 2015-01-09 9:47 UTC (permalink / raw)
To: Andreas Dilger
Cc: Jan Kara, Li Xi, Linux Filesystem Development List,
ext4 development, linux-api, Theodore Ts'o, Al Viro,
Christoph Hellwig, Dmitry Monakhov
On Thu 08-01-15 15:20:21, Andreas Dilger wrote:
> On Jan 8, 2015, at 1:26 AM, Jan Kara <jack@suse.cz> wrote:
> > On Tue 09-12-14 13:22:25, Li Xi wrote:
> >> This patch adds a new internal field of ext4 inode to save project
> >> identifier. Also a new flag EXT4_INODE_PROJINHERIT is added for
> >> inheriting project ID from parent directory.
> > I have noticed one thing you apparently changed in v7 of the patch set.
> > See below.
> >
> >> diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
> >> index 29c43e7..8bd1da9 100644
> >> --- a/fs/ext4/ext4.h
> >> +++ b/fs/ext4/ext4.h
> >> @@ -377,16 +377,18 @@ struct flex_groups {
> >> #define EXT4_EA_INODE_FL 0x00200000 /* Inode used for large EA */
> >> #define EXT4_EOFBLOCKS_FL 0x00400000 /* Blocks allocated beyond EOF */
> >> #define EXT4_INLINE_DATA_FL 0x10000000 /* Inode has inline data. */
> >> +#define EXT4_PROJINHERIT_FL FS_PROJINHERIT_FL /* Create with parents projid */
> > How did FS_PROJINHERIT_FL get here? There used to be 0x20000000 in older
> > version of the patch set which is correct - this definition is defining
> > ext4 on-disk format. As such it is an ext4 specific flag and should be
> > definined to a fixed constant independed of any other filesystem. It seems
> > you are somewhat mixing what is an on-disk format flag value and what is a
> > flag value passed from userspace. These two may be different things and
> > you need to convert between the values when getting / setting flags...
>
> Currently the EXT4_*_FL and FS_*_FL values are all identical, and there
> is no reason to change that before it is actually needed. Since the
> FS_PROJINHERIT_FL is used via chattr/lsattr from userspace, this value
> must also be kept the same in the future to avoid API breakage, so there
> is no reason to worry about incompatibilities.
Agreed. I was somewhat worried about having on-disk flag defined through
the external non-ext4 define but you are right that neither can really
change once we ship a kernel with it.
> See also the [v8 5/5] patch, which is changing the EXT4_*_FL values to
> use FS_*_FL constants, where applicable, so that it is more clear that
> these values need to be the same.
OK, I've missed that. So if things will be consistent again, I'm fine
with the change.
Honza
--
Jan Kara <jack@suse.cz>
SUSE Labs, CR
^ permalink raw reply [flat|nested] 37+ messages in thread
* [v8 3/5] ext4: adds project quota support
2014-12-09 5:22 [v8 0/5] ext4: add project quota support Li Xi
2014-12-09 5:22 ` [v8 1/5] vfs: adds general codes to enforces project quota limits Li Xi
2014-12-09 5:22 ` [v8 2/5] ext4: adds project ID support Li Xi
@ 2014-12-09 5:22 ` Li Xi
2015-01-06 20:01 ` Andreas Dilger
2014-12-09 5:22 ` [v8 4/5] ext4: adds FS_IOC_FSSETXATTR/FS_IOC_FSGETXATTR interface support Li Xi
` (2 subsequent siblings)
5 siblings, 1 reply; 37+ messages in thread
From: Li Xi @ 2014-12-09 5:22 UTC (permalink / raw)
To: linux-fsdevel, linux-ext4, linux-api, tytso, adilger, jack, viro,
hch, dmonakhov
This patch adds mount options for enabling/disabling project quota
accounting and enforcement. A new specific inode is also used for
project quota accounting.
Signed-off-by: Li Xi <lixi@ddn.com>
Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
Reviewed-by: Jan Kara <jack@suse.cz>
---
fs/ext4/ext4.h | 8 +++-
fs/ext4/super.c | 95 ++++++++++++++++++++++++++++++++++++++++++++++++------
2 files changed, 90 insertions(+), 13 deletions(-)
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 8bd1da9..136e18c 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -208,6 +208,7 @@ struct ext4_io_submit {
#define EXT4_UNDEL_DIR_INO 6 /* Undelete directory inode */
#define EXT4_RESIZE_INO 7 /* Reserved group descriptors inode */
#define EXT4_JOURNAL_INO 8 /* Journal inode */
+#define EXT4_PRJ_QUOTA_INO 9 /* Project quota inode */
/* First non-reserved inode for old ext4 filesystems */
#define EXT4_GOOD_OLD_FIRST_INO 11
@@ -982,6 +983,7 @@ struct ext4_inode_info {
#define EXT4_MOUNT_DIOREAD_NOLOCK 0x400000 /* Enable support for dio read nolocking */
#define EXT4_MOUNT_JOURNAL_CHECKSUM 0x800000 /* Journal checksums */
#define EXT4_MOUNT_JOURNAL_ASYNC_COMMIT 0x1000000 /* Journal Async Commit */
+#define EXT4_MOUNT_PRJQUOTA 0x2000000 /* Project quota support */
#define EXT4_MOUNT_DELALLOC 0x8000000 /* Delalloc support */
#define EXT4_MOUNT_DATA_ERR_ABORT 0x10000000 /* Abort on file data write */
#define EXT4_MOUNT_BLOCK_VALIDITY 0x20000000 /* Block validity checking */
@@ -1157,7 +1159,8 @@ struct ext4_super_block {
__le32 s_grp_quota_inum; /* inode for tracking group quota */
__le32 s_overhead_clusters; /* overhead blocks/clusters in fs */
__le32 s_backup_bgs[2]; /* groups with sparse_super2 SBs */
- __le32 s_reserved[106]; /* Padding to the end of the block */
+ __le32 s_prj_quota_inum; /* inode for tracking project quota */
+ __le32 s_reserved[105]; /* Padding to the end of the block */
__le32 s_checksum; /* crc32c(superblock) */
};
@@ -1172,7 +1175,7 @@ struct ext4_super_block {
#define EXT4_MF_FS_ABORTED 0x0002 /* Fatal error detected */
/* Number of quota types we support */
-#define EXT4_MAXQUOTAS 2
+#define EXT4_MAXQUOTAS 3
/*
* fourth extended-fs super-block data in memory
@@ -1364,6 +1367,7 @@ static inline int ext4_valid_inum(struct super_block *sb, unsigned long ino)
ino == EXT4_BOOT_LOADER_INO ||
ino == EXT4_JOURNAL_INO ||
ino == EXT4_RESIZE_INO ||
+ ino == EXT4_PRJ_QUOTA_INO ||
(ino >= EXT4_FIRST_INO(sb) &&
ino <= le32_to_cpu(EXT4_SB(sb)->s_es->s_inodes_count));
}
diff --git a/fs/ext4/super.c b/fs/ext4/super.c
index 6b67795..f5d8ca2 100644
--- a/fs/ext4/super.c
+++ b/fs/ext4/super.c
@@ -1035,8 +1035,8 @@ static int bdev_try_to_free_page(struct super_block *sb, struct page *page,
}
#ifdef CONFIG_QUOTA
-#define QTYPE2NAME(t) ((t) == USRQUOTA ? "user" : "group")
-#define QTYPE2MOPT(on, t) ((t) == USRQUOTA?((on)##USRJQUOTA):((on)##GRPJQUOTA))
+static char *quotatypes[] = INITQFNAMES;
+#define QTYPE2NAME(t) (quotatypes[t])
static int ext4_write_dquot(struct dquot *dquot);
static int ext4_acquire_dquot(struct dquot *dquot);
@@ -1128,10 +1128,11 @@ enum {
Opt_journal_path, Opt_journal_checksum, Opt_journal_async_commit,
Opt_abort, Opt_data_journal, Opt_data_ordered, Opt_data_writeback,
Opt_data_err_abort, Opt_data_err_ignore,
- Opt_usrjquota, Opt_grpjquota, Opt_offusrjquota, Opt_offgrpjquota,
+ Opt_usrjquota, Opt_grpjquota, Opt_prjjquota,
+ Opt_offusrjquota, Opt_offgrpjquota, Opt_offprjjquota,
Opt_jqfmt_vfsold, Opt_jqfmt_vfsv0, Opt_jqfmt_vfsv1, Opt_quota,
Opt_noquota, Opt_barrier, Opt_nobarrier, Opt_err,
- Opt_usrquota, Opt_grpquota, Opt_i_version,
+ Opt_usrquota, Opt_grpquota, Opt_prjquota, Opt_i_version,
Opt_stripe, Opt_delalloc, Opt_nodelalloc, Opt_mblk_io_submit,
Opt_nomblk_io_submit, Opt_block_validity, Opt_noblock_validity,
Opt_inode_readahead_blks, Opt_journal_ioprio,
@@ -1183,6 +1184,8 @@ static const match_table_t tokens = {
{Opt_usrjquota, "usrjquota=%s"},
{Opt_offgrpjquota, "grpjquota="},
{Opt_grpjquota, "grpjquota=%s"},
+ {Opt_offprjjquota, "prjjquota="},
+ {Opt_prjjquota, "prjjquota=%s"},
{Opt_jqfmt_vfsold, "jqfmt=vfsold"},
{Opt_jqfmt_vfsv0, "jqfmt=vfsv0"},
{Opt_jqfmt_vfsv1, "jqfmt=vfsv1"},
@@ -1190,6 +1193,7 @@ static const match_table_t tokens = {
{Opt_noquota, "noquota"},
{Opt_quota, "quota"},
{Opt_usrquota, "usrquota"},
+ {Opt_prjquota, "prjquota"},
{Opt_barrier, "barrier=%u"},
{Opt_barrier, "barrier"},
{Opt_nobarrier, "nobarrier"},
@@ -1404,12 +1408,17 @@ static const struct mount_opts {
MOPT_SET | MOPT_Q},
{Opt_grpquota, EXT4_MOUNT_QUOTA | EXT4_MOUNT_GRPQUOTA,
MOPT_SET | MOPT_Q},
+ {Opt_prjquota, EXT4_MOUNT_QUOTA | EXT4_MOUNT_PRJQUOTA,
+ MOPT_SET | MOPT_Q},
{Opt_noquota, (EXT4_MOUNT_QUOTA | EXT4_MOUNT_USRQUOTA |
- EXT4_MOUNT_GRPQUOTA), MOPT_CLEAR | MOPT_Q},
+ EXT4_MOUNT_GRPQUOTA | EXT4_MOUNT_PRJQUOTA),
+ MOPT_CLEAR | MOPT_Q},
{Opt_usrjquota, 0, MOPT_Q},
{Opt_grpjquota, 0, MOPT_Q},
+ {Opt_prjjquota, 0, MOPT_Q},
{Opt_offusrjquota, 0, MOPT_Q},
{Opt_offgrpjquota, 0, MOPT_Q},
+ {Opt_offprjjquota, 0, MOPT_Q},
{Opt_jqfmt_vfsold, QFMT_VFS_OLD, MOPT_QFMT},
{Opt_jqfmt_vfsv0, QFMT_VFS_V0, MOPT_QFMT},
{Opt_jqfmt_vfsv1, QFMT_VFS_V1, MOPT_QFMT},
@@ -1432,10 +1441,14 @@ static int handle_mount_opt(struct super_block *sb, char *opt, int token,
return set_qf_name(sb, USRQUOTA, &args[0]);
else if (token == Opt_grpjquota)
return set_qf_name(sb, GRPQUOTA, &args[0]);
+ else if (token == Opt_prjjquota)
+ return set_qf_name(sb, PRJQUOTA, &args[0]);
else if (token == Opt_offusrjquota)
return clear_qf_name(sb, USRQUOTA);
else if (token == Opt_offgrpjquota)
return clear_qf_name(sb, GRPQUOTA);
+ else if (token == Opt_offprjjquota)
+ return clear_qf_name(sb, PRJQUOTA);
#endif
switch (token) {
case Opt_noacl:
@@ -1661,19 +1674,28 @@ static int parse_options(char *options, struct super_block *sb,
}
#ifdef CONFIG_QUOTA
if (EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_QUOTA) &&
- (test_opt(sb, USRQUOTA) || test_opt(sb, GRPQUOTA))) {
+ (test_opt(sb, USRQUOTA) ||
+ test_opt(sb, GRPQUOTA) ||
+ test_opt(sb, PRJQUOTA))) {
ext4_msg(sb, KERN_ERR, "Cannot set quota options when QUOTA "
"feature is enabled");
return 0;
}
- if (sbi->s_qf_names[USRQUOTA] || sbi->s_qf_names[GRPQUOTA]) {
+ if (sbi->s_qf_names[USRQUOTA] ||
+ sbi->s_qf_names[GRPQUOTA] ||
+ sbi->s_qf_names[PRJQUOTA]) {
if (test_opt(sb, USRQUOTA) && sbi->s_qf_names[USRQUOTA])
clear_opt(sb, USRQUOTA);
if (test_opt(sb, GRPQUOTA) && sbi->s_qf_names[GRPQUOTA])
clear_opt(sb, GRPQUOTA);
- if (test_opt(sb, GRPQUOTA) || test_opt(sb, USRQUOTA)) {
+ if (test_opt(sb, PRJQUOTA) && sbi->s_qf_names[PRJQUOTA])
+ clear_opt(sb, PRJQUOTA);
+
+ if (test_opt(sb, GRPQUOTA) ||
+ test_opt(sb, USRQUOTA) ||
+ test_opt(sb, PRJQUOTA)) {
ext4_msg(sb, KERN_ERR, "old and new quota "
"format mixing");
return 0;
@@ -1733,6 +1755,9 @@ static inline void ext4_show_quota_options(struct seq_file *seq,
if (sbi->s_qf_names[GRPQUOTA])
seq_printf(seq, ",grpjquota=%s", sbi->s_qf_names[GRPQUOTA]);
+
+ if (sbi->s_qf_names[PRJQUOTA])
+ seq_printf(seq, ",prjjquota=%s", sbi->s_qf_names[PRJQUOTA]);
#endif
}
@@ -5037,6 +5062,46 @@ restore_opts:
return err;
}
+static int ext4_statfs_project(struct super_block *sb,
+ kprojid_t projid, struct kstatfs *buf)
+{
+ struct kqid qid;
+ struct dquot *dquot;
+ u64 limit;
+ u64 curblock;
+
+ qid = make_kqid_projid(projid);
+ dquot = dqget(sb, qid);
+ if (!dquot)
+ return -ESRCH;
+ spin_lock(&dq_data_lock);
+
+ limit = dquot->dq_dqb.dqb_bsoftlimit ?
+ dquot->dq_dqb.dqb_bsoftlimit :
+ dquot->dq_dqb.dqb_bhardlimit;
+ if (limit && buf->f_blocks * buf->f_bsize > limit) {
+ curblock = dquot->dq_dqb.dqb_curspace / buf->f_bsize;
+ buf->f_blocks = limit / buf->f_bsize;
+ buf->f_bfree = buf->f_bavail =
+ (buf->f_blocks > curblock) ?
+ (buf->f_blocks - curblock) : 0;
+ }
+
+ limit = dquot->dq_dqb.dqb_isoftlimit ?
+ dquot->dq_dqb.dqb_isoftlimit :
+ dquot->dq_dqb.dqb_ihardlimit;
+ if (limit && buf->f_files > limit) {
+ buf->f_files = limit;
+ buf->f_ffree =
+ (buf->f_files > dquot->dq_dqb.dqb_curinodes) ?
+ (buf->f_files - dquot->dq_dqb.dqb_curinodes) : 0;
+ }
+
+ spin_unlock(&dq_data_lock);
+ dqput(dquot);
+ return 0;
+}
+
static int ext4_statfs(struct dentry *dentry, struct kstatfs *buf)
{
struct super_block *sb = dentry->d_sb;
@@ -5045,6 +5110,7 @@ static int ext4_statfs(struct dentry *dentry, struct kstatfs *buf)
ext4_fsblk_t overhead = 0, resv_blocks;
u64 fsid;
s64 bfree;
+ struct inode *inode = dentry->d_inode;
resv_blocks = EXT4_C2B(sbi, atomic64_read(&sbi->s_resv_clusters));
if (!test_opt(sb, MINIX_DF))
@@ -5069,6 +5135,9 @@ static int ext4_statfs(struct dentry *dentry, struct kstatfs *buf)
buf->f_fsid.val[0] = fsid & 0xFFFFFFFFUL;
buf->f_fsid.val[1] = (fsid >> 32) & 0xFFFFFFFFUL;
+ if (ext4_test_inode_flag(inode, EXT4_INODE_PROJINHERIT) &&
+ sb_has_quota_limits_enabled(sb, PRJQUOTA))
+ ext4_statfs_project(sb, EXT4_I(inode)->i_projid, buf);
return 0;
}
@@ -5149,7 +5218,9 @@ static int ext4_mark_dquot_dirty(struct dquot *dquot)
/* Are we journaling quotas? */
if (EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_QUOTA) ||
- sbi->s_qf_names[USRQUOTA] || sbi->s_qf_names[GRPQUOTA]) {
+ sbi->s_qf_names[USRQUOTA] ||
+ sbi->s_qf_names[GRPQUOTA] ||
+ sbi->s_qf_names[PRJQUOTA]) {
dquot_mark_dquot_dirty(dquot);
return ext4_write_dquot(dquot);
} else {
@@ -5233,7 +5304,8 @@ static int ext4_quota_enable(struct super_block *sb, int type, int format_id,
struct inode *qf_inode;
unsigned long qf_inums[EXT4_MAXQUOTAS] = {
le32_to_cpu(EXT4_SB(sb)->s_es->s_usr_quota_inum),
- le32_to_cpu(EXT4_SB(sb)->s_es->s_grp_quota_inum)
+ le32_to_cpu(EXT4_SB(sb)->s_es->s_grp_quota_inum),
+ le32_to_cpu(EXT4_SB(sb)->s_es->s_prj_quota_inum)
};
BUG_ON(!EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_QUOTA));
@@ -5261,7 +5333,8 @@ static int ext4_enable_quotas(struct super_block *sb)
int type, err = 0;
unsigned long qf_inums[EXT4_MAXQUOTAS] = {
le32_to_cpu(EXT4_SB(sb)->s_es->s_usr_quota_inum),
- le32_to_cpu(EXT4_SB(sb)->s_es->s_grp_quota_inum)
+ le32_to_cpu(EXT4_SB(sb)->s_es->s_grp_quota_inum),
+ le32_to_cpu(EXT4_SB(sb)->s_es->s_prj_quota_inum)
};
sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE;
--
1.7.1
^ permalink raw reply related [flat|nested] 37+ messages in thread* Re: [v8 3/5] ext4: adds project quota support
2014-12-09 5:22 ` [v8 3/5] ext4: adds project quota support Li Xi
@ 2015-01-06 20:01 ` Andreas Dilger
2015-01-06 21:52 ` Jan Kara
0 siblings, 1 reply; 37+ messages in thread
From: Andreas Dilger @ 2015-01-06 20:01 UTC (permalink / raw)
To: Li Xi
Cc: Linux Filesystem Development List, ext4 development, linux-api,
tytso, jack, viro, hch, dmonakhov
On Dec 8, 2014, at 10:22 PM, Li Xi <pkuelelixi@gmail.com> wrote:
>
> This patch adds mount options for enabling/disabling project quota
> accounting and enforcement. A new specific inode is also used for
> project quota accounting.
Judy looking through these patches again and saw a minor issue:
> Signed-off-by: Li Xi <lixi@ddn.com>
> Signed-off-by: Dmitry Monakhov <dmonakhov@openvz.org>
> Reviewed-by: Jan Kara <jack@suse.cz>
> ---
> fs/ext4/ext4.h | 8 +++-
> fs/ext4/super.c | 95 ++++++++++++++++++++++++++++++++++++++++++++++++------
> 2 files changed, 90 insertions(+), 13 deletions(-)
>
> diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
> index 8bd1da9..136e18c 100644
> --- a/fs/ext4/ext4.h
> +++ b/fs/ext4/ext4.h
> @@ -208,6 +208,7 @@ struct ext4_io_submit {
> #define EXT4_UNDEL_DIR_INO 6 /* Undelete directory inode */
> #define EXT4_RESIZE_INO 7 /* Reserved group descriptors inode */
> #define EXT4_JOURNAL_INO 8 /* Journal inode */
> +#define EXT4_PRJ_QUOTA_INO 9 /* Project quota inode */
>
> /* First non-reserved inode for old ext4 filesystems */
> #define EXT4_GOOD_OLD_FIRST_INO 11
> @@ -982,6 +983,7 @@ struct ext4_inode_info {
> #define EXT4_MOUNT_DIOREAD_NOLOCK 0x400000 /* Enable support for dio read nolocking */
> #define EXT4_MOUNT_JOURNAL_CHECKSUM 0x800000 /* Journal checksums */
> #define EXT4_MOUNT_JOURNAL_ASYNC_COMMIT 0x1000000 /* Journal Async Commit */
> +#define EXT4_MOUNT_PRJQUOTA 0x2000000 /* Project quota support */
> #define EXT4_MOUNT_DELALLOC 0x8000000 /* Delalloc support */
> #define EXT4_MOUNT_DATA_ERR_ABORT 0x10000000 /* Abort on file data write */
> #define EXT4_MOUNT_BLOCK_VALIDITY 0x20000000 /* Block validity checking */
> @@ -1157,7 +1159,8 @@ struct ext4_super_block {
> __le32 s_grp_quota_inum; /* inode for tracking group quota */
> __le32 s_overhead_clusters; /* overhead blocks/clusters in fs */
> __le32 s_backup_bgs[2]; /* groups with sparse_super2 SBs */
> - __le32 s_reserved[106]; /* Padding to the end of the block */
> + __le32 s_prj_quota_inum; /* inode for tracking project quota */
> + __le32 s_reserved[105]; /* Padding to the end of the block */
> __le32 s_checksum; /* crc32c(superblock) */
> };
>
> @@ -1172,7 +1175,7 @@ struct ext4_super_block {
> #define EXT4_MF_FS_ABORTED 0x0002 /* Fatal error detected */
>
> /* Number of quota types we support */
> -#define EXT4_MAXQUOTAS 2
> +#define EXT4_MAXQUOTAS 3
>
> /*
> * fourth extended-fs super-block data in memory
> @@ -1364,6 +1367,7 @@ static inline int ext4_valid_inum(struct super_block *sb, unsigned long ino)
> ino == EXT4_BOOT_LOADER_INO ||
> ino == EXT4_JOURNAL_INO ||
> ino == EXT4_RESIZE_INO ||
> + ino == EXT4_PRJ_QUOTA_INO ||
> (ino >= EXT4_FIRST_INO(sb) &&
> ino <= le32_to_cpu(EXT4_SB(sb)->s_es->s_inodes_count));
> }
> diff --git a/fs/ext4/super.c b/fs/ext4/super.c
> index 6b67795..f5d8ca2 100644
> --- a/fs/ext4/super.c
> +++ b/fs/ext4/super.c
> @@ -1035,8 +1035,8 @@ static int bdev_try_to_free_page(struct super_block *sb, struct page *page,
> }
>
> #ifdef CONFIG_QUOTA
> -#define QTYPE2NAME(t) ((t) == USRQUOTA ? "user" : "group")
> -#define QTYPE2MOPT(on, t) ((t) == USRQUOTA?((on)##USRJQUOTA):((on)##GRPJQUOTA))
> +static char *quotatypes[] = INITQFNAMES;
> +#define QTYPE2NAME(t) (quotatypes[t])
>
> static int ext4_write_dquot(struct dquot *dquot);
> static int ext4_acquire_dquot(struct dquot *dquot);
> @@ -1128,10 +1128,11 @@ enum {
> Opt_journal_path, Opt_journal_checksum, Opt_journal_async_commit,
> Opt_abort, Opt_data_journal, Opt_data_ordered, Opt_data_writeback,
> Opt_data_err_abort, Opt_data_err_ignore,
> - Opt_usrjquota, Opt_grpjquota, Opt_offusrjquota, Opt_offgrpjquota,
> + Opt_usrjquota, Opt_grpjquota, Opt_prjjquota,
> + Opt_offusrjquota, Opt_offgrpjquota, Opt_offprjjquota,
> Opt_jqfmt_vfsold, Opt_jqfmt_vfsv0, Opt_jqfmt_vfsv1, Opt_quota,
> Opt_noquota, Opt_barrier, Opt_nobarrier, Opt_err,
> - Opt_usrquota, Opt_grpquota, Opt_i_version,
> + Opt_usrquota, Opt_grpquota, Opt_prjquota, Opt_i_version,
> Opt_stripe, Opt_delalloc, Opt_nodelalloc, Opt_mblk_io_submit,
> Opt_nomblk_io_submit, Opt_block_validity, Opt_noblock_validity,
> Opt_inode_readahead_blks, Opt_journal_ioprio,
> @@ -1183,6 +1184,8 @@ static const match_table_t tokens = {
> {Opt_usrjquota, "usrjquota=%s"},
> {Opt_offgrpjquota, "grpjquota="},
> {Opt_grpjquota, "grpjquota=%s"},
> + {Opt_offprjjquota, "prjjquota="},
> + {Opt_prjjquota, "prjjquota=%s"},
We don't need to be able to specify the project quota inodes on the
mount command line. This was only needed for supporting old (non-
journaled) user and group quotas, but there is no chance of having
old project quotas.
> {Opt_jqfmt_vfsold, "jqfmt=vfsold"},
> {Opt_jqfmt_vfsv0, "jqfmt=vfsv0"},
> {Opt_jqfmt_vfsv1, "jqfmt=vfsv1"},
> @@ -1190,6 +1193,7 @@ static const match_table_t tokens = {
> {Opt_noquota, "noquota"},
> {Opt_quota, "quota"},
> {Opt_usrquota, "usrquota"},
> + {Opt_prjquota, "prjquota"},
Do we want to allow non-journaled project quota at all? I don't
see that as a benefit, and it was only allowed for user/group
quota for compatibility reasons. Since the project quota support
will need an updated e2fsprogs anyway, it may as well be journaled
from the start.
The rest of the patch looks good.
Cheers, Andreas
> {Opt_barrier, "barrier=%u"},
> {Opt_barrier, "barrier"},
> {Opt_nobarrier, "nobarrier"},
> @@ -1404,12 +1408,17 @@ static const struct mount_opts {
> MOPT_SET | MOPT_Q},
> {Opt_grpquota, EXT4_MOUNT_QUOTA | EXT4_MOUNT_GRPQUOTA,
> MOPT_SET | MOPT_Q},
> + {Opt_prjquota, EXT4_MOUNT_QUOTA | EXT4_MOUNT_PRJQUOTA,
> + MOPT_SET | MOPT_Q},
> {Opt_noquota, (EXT4_MOUNT_QUOTA | EXT4_MOUNT_USRQUOTA |
> - EXT4_MOUNT_GRPQUOTA), MOPT_CLEAR | MOPT_Q},
> + EXT4_MOUNT_GRPQUOTA | EXT4_MOUNT_PRJQUOTA),
> + MOPT_CLEAR | MOPT_Q},
> {Opt_usrjquota, 0, MOPT_Q},
> {Opt_grpjquota, 0, MOPT_Q},
> + {Opt_prjjquota, 0, MOPT_Q},
> {Opt_offusrjquota, 0, MOPT_Q},
> {Opt_offgrpjquota, 0, MOPT_Q},
> + {Opt_offprjjquota, 0, MOPT_Q},
> {Opt_jqfmt_vfsold, QFMT_VFS_OLD, MOPT_QFMT},
> {Opt_jqfmt_vfsv0, QFMT_VFS_V0, MOPT_QFMT},
> {Opt_jqfmt_vfsv1, QFMT_VFS_V1, MOPT_QFMT},
> @@ -1432,10 +1441,14 @@ static int handle_mount_opt(struct super_block *sb, char *opt, int token,
> return set_qf_name(sb, USRQUOTA, &args[0]);
> else if (token == Opt_grpjquota)
> return set_qf_name(sb, GRPQUOTA, &args[0]);
> + else if (token == Opt_prjjquota)
> + return set_qf_name(sb, PRJQUOTA, &args[0]);
> else if (token == Opt_offusrjquota)
> return clear_qf_name(sb, USRQUOTA);
> else if (token == Opt_offgrpjquota)
> return clear_qf_name(sb, GRPQUOTA);
> + else if (token == Opt_offprjjquota)
> + return clear_qf_name(sb, PRJQUOTA);
> #endif
> switch (token) {
> case Opt_noacl:
> @@ -1661,19 +1674,28 @@ static int parse_options(char *options, struct super_block *sb,
> }
> #ifdef CONFIG_QUOTA
> if (EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_QUOTA) &&
> - (test_opt(sb, USRQUOTA) || test_opt(sb, GRPQUOTA))) {
> + (test_opt(sb, USRQUOTA) ||
> + test_opt(sb, GRPQUOTA) ||
> + test_opt(sb, PRJQUOTA))) {
> ext4_msg(sb, KERN_ERR, "Cannot set quota options when QUOTA "
> "feature is enabled");
> return 0;
> }
> - if (sbi->s_qf_names[USRQUOTA] || sbi->s_qf_names[GRPQUOTA]) {
> + if (sbi->s_qf_names[USRQUOTA] ||
> + sbi->s_qf_names[GRPQUOTA] ||
> + sbi->s_qf_names[PRJQUOTA]) {
> if (test_opt(sb, USRQUOTA) && sbi->s_qf_names[USRQUOTA])
> clear_opt(sb, USRQUOTA);
>
> if (test_opt(sb, GRPQUOTA) && sbi->s_qf_names[GRPQUOTA])
> clear_opt(sb, GRPQUOTA);
>
> - if (test_opt(sb, GRPQUOTA) || test_opt(sb, USRQUOTA)) {
> + if (test_opt(sb, PRJQUOTA) && sbi->s_qf_names[PRJQUOTA])
> + clear_opt(sb, PRJQUOTA);
> +
> + if (test_opt(sb, GRPQUOTA) ||
> + test_opt(sb, USRQUOTA) ||
> + test_opt(sb, PRJQUOTA)) {
> ext4_msg(sb, KERN_ERR, "old and new quota "
> "format mixing");
> return 0;
> @@ -1733,6 +1755,9 @@ static inline void ext4_show_quota_options(struct seq_file *seq,
>
> if (sbi->s_qf_names[GRPQUOTA])
> seq_printf(seq, ",grpjquota=%s", sbi->s_qf_names[GRPQUOTA]);
> +
> + if (sbi->s_qf_names[PRJQUOTA])
> + seq_printf(seq, ",prjjquota=%s", sbi->s_qf_names[PRJQUOTA]);
> #endif
> }
>
> @@ -5037,6 +5062,46 @@ restore_opts:
> return err;
> }
>
> +static int ext4_statfs_project(struct super_block *sb,
> + kprojid_t projid, struct kstatfs *buf)
> +{
> + struct kqid qid;
> + struct dquot *dquot;
> + u64 limit;
> + u64 curblock;
> +
> + qid = make_kqid_projid(projid);
> + dquot = dqget(sb, qid);
> + if (!dquot)
> + return -ESRCH;
> + spin_lock(&dq_data_lock);
> +
> + limit = dquot->dq_dqb.dqb_bsoftlimit ?
> + dquot->dq_dqb.dqb_bsoftlimit :
> + dquot->dq_dqb.dqb_bhardlimit;
> + if (limit && buf->f_blocks * buf->f_bsize > limit) {
> + curblock = dquot->dq_dqb.dqb_curspace / buf->f_bsize;
> + buf->f_blocks = limit / buf->f_bsize;
> + buf->f_bfree = buf->f_bavail =
> + (buf->f_blocks > curblock) ?
> + (buf->f_blocks - curblock) : 0;
> + }
> +
> + limit = dquot->dq_dqb.dqb_isoftlimit ?
> + dquot->dq_dqb.dqb_isoftlimit :
> + dquot->dq_dqb.dqb_ihardlimit;
> + if (limit && buf->f_files > limit) {
> + buf->f_files = limit;
> + buf->f_ffree =
> + (buf->f_files > dquot->dq_dqb.dqb_curinodes) ?
> + (buf->f_files - dquot->dq_dqb.dqb_curinodes) : 0;
> + }
> +
> + spin_unlock(&dq_data_lock);
> + dqput(dquot);
> + return 0;
> +}
> +
> static int ext4_statfs(struct dentry *dentry, struct kstatfs *buf)
> {
> struct super_block *sb = dentry->d_sb;
> @@ -5045,6 +5110,7 @@ static int ext4_statfs(struct dentry *dentry, struct kstatfs *buf)
> ext4_fsblk_t overhead = 0, resv_blocks;
> u64 fsid;
> s64 bfree;
> + struct inode *inode = dentry->d_inode;
> resv_blocks = EXT4_C2B(sbi, atomic64_read(&sbi->s_resv_clusters));
>
> if (!test_opt(sb, MINIX_DF))
> @@ -5069,6 +5135,9 @@ static int ext4_statfs(struct dentry *dentry, struct kstatfs *buf)
> buf->f_fsid.val[0] = fsid & 0xFFFFFFFFUL;
> buf->f_fsid.val[1] = (fsid >> 32) & 0xFFFFFFFFUL;
>
> + if (ext4_test_inode_flag(inode, EXT4_INODE_PROJINHERIT) &&
> + sb_has_quota_limits_enabled(sb, PRJQUOTA))
> + ext4_statfs_project(sb, EXT4_I(inode)->i_projid, buf);
> return 0;
> }
>
> @@ -5149,7 +5218,9 @@ static int ext4_mark_dquot_dirty(struct dquot *dquot)
>
> /* Are we journaling quotas? */
> if (EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_QUOTA) ||
> - sbi->s_qf_names[USRQUOTA] || sbi->s_qf_names[GRPQUOTA]) {
> + sbi->s_qf_names[USRQUOTA] ||
> + sbi->s_qf_names[GRPQUOTA] ||
> + sbi->s_qf_names[PRJQUOTA]) {
> dquot_mark_dquot_dirty(dquot);
> return ext4_write_dquot(dquot);
> } else {
> @@ -5233,7 +5304,8 @@ static int ext4_quota_enable(struct super_block *sb, int type, int format_id,
> struct inode *qf_inode;
> unsigned long qf_inums[EXT4_MAXQUOTAS] = {
> le32_to_cpu(EXT4_SB(sb)->s_es->s_usr_quota_inum),
> - le32_to_cpu(EXT4_SB(sb)->s_es->s_grp_quota_inum)
> + le32_to_cpu(EXT4_SB(sb)->s_es->s_grp_quota_inum),
> + le32_to_cpu(EXT4_SB(sb)->s_es->s_prj_quota_inum)
> };
>
> BUG_ON(!EXT4_HAS_RO_COMPAT_FEATURE(sb, EXT4_FEATURE_RO_COMPAT_QUOTA));
> @@ -5261,7 +5333,8 @@ static int ext4_enable_quotas(struct super_block *sb)
> int type, err = 0;
> unsigned long qf_inums[EXT4_MAXQUOTAS] = {
> le32_to_cpu(EXT4_SB(sb)->s_es->s_usr_quota_inum),
> - le32_to_cpu(EXT4_SB(sb)->s_es->s_grp_quota_inum)
> + le32_to_cpu(EXT4_SB(sb)->s_es->s_grp_quota_inum),
> + le32_to_cpu(EXT4_SB(sb)->s_es->s_prj_quota_inum)
> };
>
> sb_dqopt(sb)->flags |= DQUOT_QUOTA_SYS_FILE;
> --
> 1.7.1
>
Cheers, Andreas
^ permalink raw reply [flat|nested] 37+ messages in thread* Re: [v8 3/5] ext4: adds project quota support
2015-01-06 20:01 ` Andreas Dilger
@ 2015-01-06 21:52 ` Jan Kara
0 siblings, 0 replies; 37+ messages in thread
From: Jan Kara @ 2015-01-06 21:52 UTC (permalink / raw)
To: Andreas Dilger
Cc: Li Xi, Linux Filesystem Development List, ext4 development,
linux-api, tytso, jack, viro, hch, dmonakhov
On Tue 06-01-15 13:01:21, Andreas Dilger wrote:
> On Dec 8, 2014, at 10:22 PM, Li Xi <pkuelelixi@gmail.com> wrote:
> >
> > This patch adds mount options for enabling/disabling project quota
> > accounting and enforcement. A new specific inode is also used for
> > project quota accounting.
>
> Judy looking through these patches again and saw a minor issue:
>
> > @@ -1128,10 +1128,11 @@ enum {
> > Opt_journal_path, Opt_journal_checksum, Opt_journal_async_commit,
> > Opt_abort, Opt_data_journal, Opt_data_ordered, Opt_data_writeback,
> > Opt_data_err_abort, Opt_data_err_ignore,
> > - Opt_usrjquota, Opt_grpjquota, Opt_offusrjquota, Opt_offgrpjquota,
> > + Opt_usrjquota, Opt_grpjquota, Opt_prjjquota,
> > + Opt_offusrjquota, Opt_offgrpjquota, Opt_offprjjquota,
> > Opt_jqfmt_vfsold, Opt_jqfmt_vfsv0, Opt_jqfmt_vfsv1, Opt_quota,
> > Opt_noquota, Opt_barrier, Opt_nobarrier, Opt_err,
> > - Opt_usrquota, Opt_grpquota, Opt_i_version,
> > + Opt_usrquota, Opt_grpquota, Opt_prjquota, Opt_i_version,
> > Opt_stripe, Opt_delalloc, Opt_nodelalloc, Opt_mblk_io_submit,
> > Opt_nomblk_io_submit, Opt_block_validity, Opt_noblock_validity,
> > Opt_inode_readahead_blks, Opt_journal_ioprio,
> > @@ -1183,6 +1184,8 @@ static const match_table_t tokens = {
> > {Opt_usrjquota, "usrjquota=%s"},
> > {Opt_offgrpjquota, "grpjquota="},
> > {Opt_grpjquota, "grpjquota=%s"},
> > + {Opt_offprjjquota, "prjjquota="},
> > + {Opt_prjjquota, "prjjquota=%s"},
>
> We don't need to be able to specify the project quota inodes on the
> mount command line. This was only needed for supporting old (non-
> journaled) user and group quotas, but there is no chance of having
> old project quotas.
>
> > {Opt_jqfmt_vfsold, "jqfmt=vfsold"},
> > {Opt_jqfmt_vfsv0, "jqfmt=vfsv0"},
> > {Opt_jqfmt_vfsv1, "jqfmt=vfsv1"},
> > @@ -1190,6 +1193,7 @@ static const match_table_t tokens = {
> > {Opt_noquota, "noquota"},
> > {Opt_quota, "quota"},
> > {Opt_usrquota, "usrquota"},
> > + {Opt_prjquota, "prjquota"},
>
> Do we want to allow non-journaled project quota at all? I don't
> see that as a benefit, and it was only allowed for user/group
> quota for compatibility reasons. Since the project quota support
> will need an updated e2fsprogs anyway, it may as well be journaled
> from the start.
Yeah, probably you are right that it doesn't make a whole lot of sense to
support project quotas in user visible files. So these could be removed.
Honza
--
Jan Kara <jack@suse.cz>
SUSE Labs, CR
^ permalink raw reply [flat|nested] 37+ messages in thread
* [v8 4/5] ext4: adds FS_IOC_FSSETXATTR/FS_IOC_FSGETXATTR interface support
2014-12-09 5:22 [v8 0/5] ext4: add project quota support Li Xi
` (2 preceding siblings ...)
2014-12-09 5:22 ` [v8 3/5] ext4: adds project quota support Li Xi
@ 2014-12-09 5:22 ` Li Xi
2014-12-09 22:57 ` Dave Chinner
2015-01-22 15:28 ` Konstantin Khlebnikov
[not found] ` <1418102548-5469-1-git-send-email-lixi-LfVdkaOWEx8@public.gmane.org>
2015-01-26 18:46 ` [v8 0/5] ext4: add project quota support jon ernst
5 siblings, 2 replies; 37+ messages in thread
From: Li Xi @ 2014-12-09 5:22 UTC (permalink / raw)
To: linux-fsdevel, linux-ext4, linux-api, tytso, adilger, jack, viro,
hch, dmonakhov
This patch adds FS_IOC_FSSETXATTR/FS_IOC_FSGETXATTR ioctl interface
support for ext4. The interface is kept consistent with
XFS_IOC_FSGETXATTR/XFS_IOC_FSGETXATTR.
Signed-off-by: Li Xi <lixi@ddn.com>
---
fs/ext4/ext4.h | 111 ++++++++++++++++
fs/ext4/ioctl.c | 330 +++++++++++++++++++++++++++++++++--------------
fs/xfs/xfs_fs.h | 47 +++-----
include/uapi/linux/fs.h | 58 ++++++++
4 files changed, 418 insertions(+), 128 deletions(-)
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 136e18c..43a2a88 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -384,6 +384,115 @@ struct flex_groups {
#define EXT4_FL_USER_VISIBLE 0x204BDFFF /* User visible flags */
#define EXT4_FL_USER_MODIFIABLE 0x204380FF /* User modifiable flags */
+/* Transfer internal flags to xflags */
+static inline __u32 ext4_iflags_to_xflags(unsigned long iflags)
+{
+ __u32 xflags = 0;
+
+ if (iflags & EXT4_SECRM_FL)
+ xflags |= FS_XFLAG_SECRM;
+ if (iflags & EXT4_UNRM_FL)
+ xflags |= FS_XFLAG_UNRM;
+ if (iflags & EXT4_COMPR_FL)
+ xflags |= FS_XFLAG_COMPR;
+ if (iflags & EXT4_SYNC_FL)
+ xflags |= FS_XFLAG_SYNC;
+ if (iflags & EXT4_IMMUTABLE_FL)
+ xflags |= FS_XFLAG_IMMUTABLE;
+ if (iflags & EXT4_APPEND_FL)
+ xflags |= FS_XFLAG_APPEND;
+ if (iflags & EXT4_NODUMP_FL)
+ xflags |= FS_XFLAG_NODUMP;
+ if (iflags & EXT4_NOATIME_FL)
+ xflags |= FS_XFLAG_NOATIME;
+ if (iflags & EXT4_COMPRBLK_FL)
+ xflags |= FS_XFLAG_COMPRBLK;
+ if (iflags & EXT4_NOCOMPR_FL)
+ xflags |= FS_XFLAG_NOCOMPR;
+ if (iflags & EXT4_ECOMPR_FL)
+ xflags |= FS_XFLAG_ECOMPR;
+ if (iflags & EXT4_INDEX_FL)
+ xflags |= FS_XFLAG_INDEX;
+ if (iflags & EXT4_IMAGIC_FL)
+ xflags |= FS_XFLAG_IMAGIC;
+ if (iflags & EXT4_JOURNAL_DATA_FL)
+ xflags |= FS_XFLAG_JOURNAL_DATA;
+ if (iflags & EXT4_NOTAIL_FL)
+ xflags |= FS_XFLAG_NOTAIL;
+ if (iflags & EXT4_DIRSYNC_FL)
+ xflags |= FS_XFLAG_DIRSYNC;
+ if (iflags & EXT4_TOPDIR_FL)
+ xflags |= FS_XFLAG_TOPDIR;
+ if (iflags & EXT4_HUGE_FILE_FL)
+ xflags |= FS_XFLAG_HUGE_FILE;
+ if (iflags & EXT4_EXTENTS_FL)
+ xflags |= FS_XFLAG_EXTENTS;
+ if (iflags & EXT4_EA_INODE_FL)
+ xflags |= FS_XFLAG_EA_INODE;
+ if (iflags & EXT4_EOFBLOCKS_FL)
+ xflags |= FS_XFLAG_EOFBLOCKS;
+ if (iflags & EXT4_INLINE_DATA_FL)
+ xflags |= FS_XFLAG_INLINE_DATA;
+ if (iflags & EXT4_PROJINHERIT_FL)
+ xflags |= FS_XFLAG_PROJINHERIT;
+ return xflags;
+}
+
+/* Transfer xflags flags to internal */
+static inline unsigned long ext4_xflags_to_iflags(__u32 xflags)
+{
+ unsigned long iflags = 0;
+
+ if (xflags & FS_XFLAG_SECRM)
+ iflags |= EXT4_SECRM_FL;
+ if (xflags & FS_XFLAG_UNRM)
+ iflags |= EXT4_UNRM_FL;
+ if (xflags & FS_XFLAG_COMPR)
+ iflags |= EXT4_COMPR_FL;
+ if (xflags & FS_XFLAG_SYNC)
+ iflags |= EXT4_SYNC_FL;
+ if (xflags & FS_XFLAG_IMMUTABLE)
+ iflags |= EXT4_IMMUTABLE_FL;
+ if (xflags & FS_XFLAG_APPEND)
+ iflags |= EXT4_APPEND_FL;
+ if (xflags & FS_XFLAG_NODUMP)
+ iflags |= EXT4_NODUMP_FL;
+ if (xflags & FS_XFLAG_NOATIME)
+ iflags |= EXT4_NOATIME_FL;
+ if (xflags & FS_XFLAG_COMPRBLK)
+ iflags |= EXT4_COMPRBLK_FL;
+ if (xflags & FS_XFLAG_NOCOMPR)
+ iflags |= EXT4_NOCOMPR_FL;
+ if (xflags & FS_XFLAG_ECOMPR)
+ iflags |= EXT4_ECOMPR_FL;
+ if (xflags & FS_XFLAG_INDEX)
+ iflags |= EXT4_INDEX_FL;
+ if (xflags & FS_XFLAG_IMAGIC)
+ iflags |= EXT4_IMAGIC_FL;
+ if (xflags & FS_XFLAG_JOURNAL_DATA)
+ iflags |= EXT4_JOURNAL_DATA_FL;
+ if (xflags & FS_XFLAG_IMAGIC)
+ iflags |= FS_XFLAG_NOTAIL;
+ if (xflags & FS_XFLAG_DIRSYNC)
+ iflags |= EXT4_DIRSYNC_FL;
+ if (xflags & FS_XFLAG_TOPDIR)
+ iflags |= EXT4_TOPDIR_FL;
+ if (xflags & FS_XFLAG_HUGE_FILE)
+ iflags |= EXT4_HUGE_FILE_FL;
+ if (xflags & FS_XFLAG_EXTENTS)
+ iflags |= EXT4_EXTENTS_FL;
+ if (xflags & FS_XFLAG_EA_INODE)
+ iflags |= EXT4_EA_INODE_FL;
+ if (xflags & FS_XFLAG_EOFBLOCKS)
+ iflags |= EXT4_EOFBLOCKS_FL;
+ if (xflags & FS_XFLAG_INLINE_DATA)
+ iflags |= EXT4_INLINE_DATA_FL;
+ if (xflags & FS_XFLAG_PROJINHERIT)
+ iflags |= EXT4_PROJINHERIT_FL;
+
+ return iflags;
+}
+
/* Flags that should be inherited by new inodes from their parent. */
#define EXT4_FL_INHERITED (EXT4_SECRM_FL | EXT4_UNRM_FL | EXT4_COMPR_FL |\
EXT4_SYNC_FL | EXT4_NODUMP_FL | EXT4_NOATIME_FL |\
@@ -606,6 +715,8 @@ enum {
#define EXT4_IOC_RESIZE_FS _IOW('f', 16, __u64)
#define EXT4_IOC_SWAP_BOOT _IO('f', 17)
#define EXT4_IOC_PRECACHE_EXTENTS _IO('f', 18)
+#define EXT4_IOC_FSGETXATTR FS_IOC_FSGETXATTR
+#define EXT4_IOC_FSSETXATTR FS_IOC_FSSETXATTR
#if defined(__KERNEL__) && defined(CONFIG_COMPAT)
/*
diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c
index f58a0d1..8332476 100644
--- a/fs/ext4/ioctl.c
+++ b/fs/ext4/ioctl.c
@@ -14,6 +14,8 @@
#include <linux/compat.h>
#include <linux/mount.h>
#include <linux/file.h>
+#include <linux/quotaops.h>
+#include <linux/quota.h>
#include <asm/uaccess.h>
#include "ext4_jbd2.h"
#include "ext4.h"
@@ -196,126 +198,220 @@ journal_err_out:
return err;
}
-long ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
+static int ext4_ioctl_setflags(struct file *filp, unsigned int flags)
{
struct inode *inode = file_inode(filp);
- struct super_block *sb = inode->i_sb;
struct ext4_inode_info *ei = EXT4_I(inode);
- unsigned int flags;
+ handle_t *handle = NULL;
+ int err, migrate = 0;
+ struct ext4_iloc iloc;
+ unsigned int oldflags, mask, i;
+ unsigned int jflag;
- ext4_debug("cmd = %u, arg = %lu\n", cmd, arg);
+ if (!inode_owner_or_capable(inode))
+ return -EACCES;
- switch (cmd) {
- case EXT4_IOC_GETFLAGS:
- ext4_get_inode_flags(ei);
- flags = ei->i_flags & EXT4_FL_USER_VISIBLE;
- return put_user(flags, (int __user *) arg);
- case EXT4_IOC_SETFLAGS: {
- handle_t *handle = NULL;
- int err, migrate = 0;
- struct ext4_iloc iloc;
- unsigned int oldflags, mask, i;
- unsigned int jflag;
+ err = mnt_want_write_file(filp);
+ if (err)
+ return err;
- if (!inode_owner_or_capable(inode))
- return -EACCES;
+ flags = ext4_mask_flags(inode->i_mode, flags);
- if (get_user(flags, (int __user *) arg))
- return -EFAULT;
+ err = -EPERM;
+ mutex_lock(&inode->i_mutex);
+ /* Is it quota file? Do not allow user to mess with it */
+ if (IS_NOQUOTA(inode))
+ goto flags_out;
- err = mnt_want_write_file(filp);
- if (err)
- return err;
+ oldflags = ei->i_flags;
- flags = ext4_mask_flags(inode->i_mode, flags);
+ /* The JOURNAL_DATA flag is modifiable only by root */
+ jflag = flags & EXT4_JOURNAL_DATA_FL;
- err = -EPERM;
- mutex_lock(&inode->i_mutex);
- /* Is it quota file? Do not allow user to mess with it */
- if (IS_NOQUOTA(inode))
+ /*
+ * The IMMUTABLE and APPEND_ONLY flags can only be changed by
+ * the relevant capability.
+ *
+ * This test looks nicer. Thanks to Pauline Middelink
+ */
+ if ((flags ^ oldflags) & (EXT4_APPEND_FL | EXT4_IMMUTABLE_FL)) {
+ if (!capable(CAP_LINUX_IMMUTABLE))
goto flags_out;
+ }
- oldflags = ei->i_flags;
-
- /* The JOURNAL_DATA flag is modifiable only by root */
- jflag = flags & EXT4_JOURNAL_DATA_FL;
-
- /*
- * The IMMUTABLE and APPEND_ONLY flags can only be changed by
- * the relevant capability.
- *
- * This test looks nicer. Thanks to Pauline Middelink
- */
- if ((flags ^ oldflags) & (EXT4_APPEND_FL | EXT4_IMMUTABLE_FL)) {
- if (!capable(CAP_LINUX_IMMUTABLE))
- goto flags_out;
- }
-
- /*
- * The JOURNAL_DATA flag can only be changed by
- * the relevant capability.
- */
- if ((jflag ^ oldflags) & (EXT4_JOURNAL_DATA_FL)) {
- if (!capable(CAP_SYS_RESOURCE))
- goto flags_out;
- }
- if ((flags ^ oldflags) & EXT4_EXTENTS_FL)
- migrate = 1;
-
+ /*
+ * The JOURNAL_DATA flag can only be changed by
+ * the relevant capability.
+ */
+ if ((jflag ^ oldflags) & (EXT4_JOURNAL_DATA_FL)) {
+ if (!capable(CAP_SYS_RESOURCE))
+ goto flags_out;
+ }
+ if ((flags ^ oldflags) & EXT4_EXTENTS_FL)
+ migrate = 1;
if (flags & EXT4_EOFBLOCKS_FL) {
- /* we don't support adding EOFBLOCKS flag */
- if (!(oldflags & EXT4_EOFBLOCKS_FL)) {
- err = -EOPNOTSUPP;
- goto flags_out;
- }
- } else if (oldflags & EXT4_EOFBLOCKS_FL)
- ext4_truncate(inode);
-
- handle = ext4_journal_start(inode, EXT4_HT_INODE, 1);
- if (IS_ERR(handle)) {
- err = PTR_ERR(handle);
+ /* we don't support adding EOFBLOCKS flag */
+ if (!(oldflags & EXT4_EOFBLOCKS_FL)) {
+ err = -EOPNOTSUPP;
goto flags_out;
}
- if (IS_SYNC(inode))
- ext4_handle_sync(handle);
- err = ext4_reserve_inode_write(handle, inode, &iloc);
- if (err)
- goto flags_err;
-
- for (i = 0, mask = 1; i < 32; i++, mask <<= 1) {
- if (!(mask & EXT4_FL_USER_MODIFIABLE))
- continue;
- if (mask & flags)
- ext4_set_inode_flag(inode, i);
- else
- ext4_clear_inode_flag(inode, i);
- }
+ } else if (oldflags & EXT4_EOFBLOCKS_FL)
+ ext4_truncate(inode);
- ext4_set_inode_flags(inode);
- inode->i_ctime = ext4_current_time(inode);
+ handle = ext4_journal_start(inode, EXT4_HT_INODE, 1);
+ if (IS_ERR(handle)) {
+ err = PTR_ERR(handle);
+ goto flags_out;
+ }
+ if (IS_SYNC(inode))
+ ext4_handle_sync(handle);
+ err = ext4_reserve_inode_write(handle, inode, &iloc);
+ if (err)
+ goto flags_err;
+
+ for (i = 0, mask = 1; i < 32; i++, mask <<= 1) {
+ if (!(mask & EXT4_FL_USER_MODIFIABLE))
+ continue;
+ if (mask & flags)
+ ext4_set_inode_flag(inode, i);
+ else
+ ext4_clear_inode_flag(inode, i);
+ }
- err = ext4_mark_iloc_dirty(handle, inode, &iloc);
-flags_err:
- ext4_journal_stop(handle);
- if (err)
- goto flags_out;
+ ext4_set_inode_flags(inode);
+ inode->i_ctime = ext4_current_time(inode);
- if ((jflag ^ oldflags) & (EXT4_JOURNAL_DATA_FL))
- err = ext4_change_inode_journal_flag(inode, jflag);
- if (err)
- goto flags_out;
- if (migrate) {
- if (flags & EXT4_EXTENTS_FL)
- err = ext4_ext_migrate(inode);
- else
- err = ext4_ind_migrate(inode);
- }
+ err = ext4_mark_iloc_dirty(handle, inode, &iloc);
+flags_err:
+ ext4_journal_stop(handle);
+ if (err)
+ goto flags_out;
+
+ if ((jflag ^ oldflags) & (EXT4_JOURNAL_DATA_FL))
+ err = ext4_change_inode_journal_flag(inode, jflag);
+ if (err)
+ goto flags_out;
+ if (migrate) {
+ if (flags & EXT4_EXTENTS_FL)
+ err = ext4_ext_migrate(inode);
+ else
+ err = ext4_ind_migrate(inode);
+ }
flags_out:
- mutex_unlock(&inode->i_mutex);
- mnt_drop_write_file(filp);
+ mutex_unlock(&inode->i_mutex);
+ mnt_drop_write_file(filp);
+ return err;
+}
+
+static int ext4_ioctl_setproject(struct file *filp, __u32 projid)
+{
+ struct inode *inode = file_inode(filp);
+ struct super_block *sb = inode->i_sb;
+ struct ext4_inode_info *ei = EXT4_I(inode);
+ int err;
+ handle_t *handle;
+ kprojid_t kprojid;
+ struct ext4_iloc iloc;
+ struct ext4_inode *raw_inode;
+
+ struct dquot *transfer_to[EXT4_MAXQUOTAS] = { };
+
+ /* Make sure caller can change project. */
+ if (!capable(CAP_SYS_ADMIN))
+ return -EACCES;
+
+ if (projid != EXT4_DEF_PROJID
+ && !EXT4_HAS_RO_COMPAT_FEATURE(sb,
+ EXT4_FEATURE_RO_COMPAT_PROJECT))
+ return -EOPNOTSUPP;
+
+ if (!EXT4_HAS_RO_COMPAT_FEATURE(sb,
+ EXT4_FEATURE_RO_COMPAT_PROJECT)) {
+ BUG_ON(__kprojid_val(EXT4_I(inode)->i_projid)
+ != EXT4_DEF_PROJID);
+ if (projid != EXT4_DEF_PROJID)
+ return -EOPNOTSUPP;
+ else
+ return 0;
+ }
+
+ kprojid = make_kprojid(&init_user_ns, (projid_t)projid);
+
+ if (projid_eq(kprojid, EXT4_I(inode)->i_projid))
+ return 0;
+
+ err = mnt_want_write_file(filp);
+ if (err)
return err;
+
+ err = -EPERM;
+ mutex_lock(&inode->i_mutex);
+ /* Is it quota file? Do not allow user to mess with it */
+ if (IS_NOQUOTA(inode))
+ goto project_out;
+
+ dquot_initialize(inode);
+
+ handle = ext4_journal_start(inode, EXT4_HT_QUOTA,
+ EXT4_QUOTA_INIT_BLOCKS(sb) +
+ EXT4_QUOTA_DEL_BLOCKS(sb) + 3);
+ if (IS_ERR(handle)) {
+ err = PTR_ERR(handle);
+ goto project_out;
+ }
+
+ err = ext4_reserve_inode_write(handle, inode, &iloc);
+ if (err)
+ goto project_stop;
+
+ raw_inode = ext4_raw_inode(&iloc);
+ if ((EXT4_INODE_SIZE(sb) <=
+ EXT4_GOOD_OLD_INODE_SIZE) ||
+ (!EXT4_FITS_IN_INODE(raw_inode, ei, i_projid))) {
+ err = -EFBIG;
+ goto project_stop;
}
+
+ transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid));
+ if (!transfer_to[PRJQUOTA])
+ goto project_set;
+
+ err = __dquot_transfer(inode, transfer_to);
+ dqput(transfer_to[PRJQUOTA]);
+ if (err)
+ goto project_stop;
+
+project_set:
+ EXT4_I(inode)->i_projid = kprojid;
+ inode->i_ctime = ext4_current_time(inode);
+ err = ext4_mark_iloc_dirty(handle, inode, &iloc);
+project_stop:
+ ext4_journal_stop(handle);
+project_out:
+ mutex_unlock(&inode->i_mutex);
+ mnt_drop_write_file(filp);
+ return err;
+}
+
+long ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
+{
+ struct inode *inode = file_inode(filp);
+ struct super_block *sb = inode->i_sb;
+ struct ext4_inode_info *ei = EXT4_I(inode);
+ unsigned int flags;
+
+ ext4_debug("cmd = %u, arg = %lu\n", cmd, arg);
+
+ switch (cmd) {
+ case EXT4_IOC_GETFLAGS:
+ ext4_get_inode_flags(ei);
+ flags = ei->i_flags & EXT4_FL_USER_VISIBLE;
+ return put_user(flags, (int __user *) arg);
+ case EXT4_IOC_SETFLAGS:
+ if (get_user(flags, (int __user *) arg))
+ return -EFAULT;
+ return ext4_ioctl_setflags(filp, flags);
case EXT4_IOC_GETVERSION:
case EXT4_IOC_GETVERSION_OLD:
return put_user(inode->i_generation, (int __user *) arg);
@@ -615,7 +711,45 @@ resizefs_out:
}
case EXT4_IOC_PRECACHE_EXTENTS:
return ext4_ext_precache(inode);
+ case EXT4_IOC_FSGETXATTR:
+ {
+ struct fsxattr fa;
+
+ memset(&fa, 0, sizeof(struct fsxattr));
+
+ ext4_get_inode_flags(ei);
+ fa.fsx_xflags = ext4_iflags_to_xflags(ei->i_flags & EXT4_FL_USER_VISIBLE);
+
+ if (EXT4_HAS_RO_COMPAT_FEATURE(inode->i_sb,
+ EXT4_FEATURE_RO_COMPAT_PROJECT)) {
+ fa.fsx_projid = (__u32)from_kprojid(&init_user_ns,
+ EXT4_I(inode)->i_projid);
+ }
+
+ if (copy_to_user((struct fsxattr __user *)arg,
+ &fa, sizeof(fa)))
+ return -EFAULT;
+ return 0;
+ }
+ case EXT4_IOC_FSSETXATTR:
+ {
+ struct fsxattr fa;
+ int err;
+
+ if (copy_from_user(&fa, (struct fsxattr __user *)arg,
+ sizeof(fa)))
+ return -EFAULT;
+ err = ext4_ioctl_setflags(filp, ext4_xflags_to_iflags(fa.fsx_xflags));
+ if (err)
+ return err;
+
+ err = ext4_ioctl_setproject(filp, fa.fsx_projid);
+ if (err)
+ return err;
+
+ return 0;
+ }
default:
return -ENOTTY;
}
diff --git a/fs/xfs/xfs_fs.h b/fs/xfs/xfs_fs.h
index 18dc721..64c7ae6 100644
--- a/fs/xfs/xfs_fs.h
+++ b/fs/xfs/xfs_fs.h
@@ -36,38 +36,25 @@ struct dioattr {
#endif
/*
- * Structure for XFS_IOC_FSGETXATTR[A] and XFS_IOC_FSSETXATTR.
- */
-#ifndef HAVE_FSXATTR
-struct fsxattr {
- __u32 fsx_xflags; /* xflags field value (get/set) */
- __u32 fsx_extsize; /* extsize field value (get/set)*/
- __u32 fsx_nextents; /* nextents field value (get) */
- __u32 fsx_projid; /* project identifier (get/set) */
- unsigned char fsx_pad[12];
-};
-#endif
-
-/*
* Flags for the bs_xflags/fsx_xflags field
* There should be a one-to-one correspondence between these flags and the
* XFS_DIFLAG_s.
*/
-#define XFS_XFLAG_REALTIME 0x00000001 /* data in realtime volume */
-#define XFS_XFLAG_PREALLOC 0x00000002 /* preallocated file extents */
-#define XFS_XFLAG_IMMUTABLE 0x00000008 /* file cannot be modified */
-#define XFS_XFLAG_APPEND 0x00000010 /* all writes append */
-#define XFS_XFLAG_SYNC 0x00000020 /* all writes synchronous */
-#define XFS_XFLAG_NOATIME 0x00000040 /* do not update access time */
-#define XFS_XFLAG_NODUMP 0x00000080 /* do not include in backups */
-#define XFS_XFLAG_RTINHERIT 0x00000100 /* create with rt bit set */
-#define XFS_XFLAG_PROJINHERIT 0x00000200 /* create with parents projid */
-#define XFS_XFLAG_NOSYMLINKS 0x00000400 /* disallow symlink creation */
-#define XFS_XFLAG_EXTSIZE 0x00000800 /* extent size allocator hint */
-#define XFS_XFLAG_EXTSZINHERIT 0x00001000 /* inherit inode extent size */
-#define XFS_XFLAG_NODEFRAG 0x00002000 /* do not defragment */
-#define XFS_XFLAG_FILESTREAM 0x00004000 /* use filestream allocator */
-#define XFS_XFLAG_HASATTR 0x80000000 /* no DIFLAG for this */
+#define XFS_XFLAG_REALTIME FS_XFLAG_REALTIME /* data in realtime volume */
+#define XFS_XFLAG_PREALLOC FS_XFLAG_PREALLOC /* preallocated file extents */
+#define XFS_XFLAG_IMMUTABLE FS_XFLAG_IMMUTABLE /* file cannot be modified */
+#define XFS_XFLAG_APPEND FS_XFLAG_APPEND /* all writes append */
+#define XFS_XFLAG_SYNC FS_XFLAG_SYNC /* all writes synchronous */
+#define XFS_XFLAG_NOATIME FS_XFLAG_NOATIME /* do not update access time */
+#define XFS_XFLAG_NODUMP FS_XFLAG_NODUMP /* do not include in backups */
+#define XFS_XFLAG_RTINHERIT FS_XFLAG_RTINHERIT /* create with rt bit set */
+#define XFS_XFLAG_PROJINHERIT FS_XFLAG_PROJINHERIT /* create with parents projid */
+#define XFS_XFLAG_NOSYMLINKS FS_XFLAG_NOSYMLINKS /* disallow symlink creation */
+#define XFS_XFLAG_EXTSIZE FS_XFLAG_EXTSIZE /* extent size allocator hint */
+#define XFS_XFLAG_EXTSZINHERIT FS_XFLAG_EXTSZINHERIT /* inherit inode extent size */
+#define XFS_XFLAG_NODEFRAG FS_XFLAG_NODEFRAG /* do not defragment */
+#define XFS_XFLAG_FILESTREAM FS_XFLAG_FILESTREAM /* use filestream allocator */
+#define XFS_XFLAG_HASATTR FS_XFLAG_HASATTR /* no DIFLAG for this */
/*
* Structure for XFS_IOC_GETBMAP.
@@ -503,8 +490,8 @@ typedef struct xfs_swapext
#define XFS_IOC_ALLOCSP _IOW ('X', 10, struct xfs_flock64)
#define XFS_IOC_FREESP _IOW ('X', 11, struct xfs_flock64)
#define XFS_IOC_DIOINFO _IOR ('X', 30, struct dioattr)
-#define XFS_IOC_FSGETXATTR _IOR ('X', 31, struct fsxattr)
-#define XFS_IOC_FSSETXATTR _IOW ('X', 32, struct fsxattr)
+#define XFS_IOC_FSGETXATTR FS_IOC_FSGETXATTR
+#define XFS_IOC_FSSETXATTR FS_IOC_FSSETXATTR
#define XFS_IOC_ALLOCSP64 _IOW ('X', 36, struct xfs_flock64)
#define XFS_IOC_FREESP64 _IOW ('X', 37, struct xfs_flock64)
#define XFS_IOC_GETBMAP _IOWR('X', 38, struct getbmap)
diff --git a/include/uapi/linux/fs.h b/include/uapi/linux/fs.h
index fcbf647..872fed5 100644
--- a/include/uapi/linux/fs.h
+++ b/include/uapi/linux/fs.h
@@ -58,6 +58,62 @@ struct inodes_stat_t {
long dummy[5]; /* padding for sysctl ABI compatibility */
};
+/*
+ * Extend attribute flags. These should be or-ed together to figure out what
+ * is valid.
+ */
+#define FSX_XFLAGS (1 << 0)
+#define FSX_EXTSIZE (1 << 1)
+#define FSX_NEXTENTS (1 << 2)
+#define FSX_PROJID (1 << 3)
+
+/*
+ * Structure for FS_IOC_FSGETXATTR and FS_IOC_FSSETXATTR.
+ */
+struct fsxattr {
+ __u32 fsx_xflags; /* xflags field value (get/set) */
+ __u32 fsx_extsize; /* extsize field value (get/set)*/
+ __u32 fsx_nextents; /* nextents field value (get) */
+ __u32 fsx_projid; /* project identifier (get/set) */
+ unsigned char fsx_pad[12];
+};
+
+/*
+ * Flags for the fsx_xflags field
+ */
+#define FS_XFLAG_REALTIME 0x00000001 /* data in realtime volume */
+#define FS_XFLAG_PREALLOC 0x00000002 /* preallocated file extents */
+#define FS_XFLAG_SECRM 0x00000004 /* secure deletion */
+#define FS_XFLAG_IMMUTABLE 0x00000008 /* file cannot be modified */
+#define FS_XFLAG_APPEND 0x00000010 /* all writes append */
+#define FS_XFLAG_SYNC 0x00000020 /* all writes synchronous */
+#define FS_XFLAG_NOATIME 0x00000040 /* do not update access time */
+#define FS_XFLAG_NODUMP 0x00000080 /* do not include in backups */
+#define FS_XFLAG_RTINHERIT 0x00000100 /* create with rt bit set */
+#define FS_XFLAG_PROJINHERIT 0x00000200 /* create with parents projid */
+#define FS_XFLAG_NOSYMLINKS 0x00000400 /* disallow symlink creation */
+#define FS_XFLAG_EXTSIZE 0x00000800 /* extent size allocator hint */
+#define FS_XFLAG_EXTSZINHERIT 0x00001000 /* inherit inode extent size */
+#define FS_XFLAG_NODEFRAG 0x00002000 /* do not defragment */
+#define FS_XFLAG_FILESTREAM 0x00004000 /* use filestream allocator */
+#define FS_XFLAG_UNRM 0x00008000 /* undelete */
+#define FS_XFLAG_COMPR 0x00010000 /* compress file */
+#define FS_XFLAG_COMPRBLK 0x00020000 /* one or more compressed clusters */
+#define FS_XFLAG_NOCOMPR 0x00040000 /* don't compress */
+#define FS_XFLAG_ECOMPR 0x00080000 /* compression error */
+#define FS_XFLAG_INDEX 0x00100000 /* hash-indexed directory */
+#define FS_XFLAG_IMAGIC 0x00200000 /* AFS directory */
+#define FS_XFLAG_JOURNAL_DATA 0x00400000 /* file data should be journaled */
+#define FS_XFLAG_NOTAIL 0x00800000 /* file tail should not be merged */
+#define FS_XFLAG_DIRSYNC 0x01000000 /* dirsync behaviour (directories only) */
+#define FS_XFLAG_TOPDIR 0x02000000 /* top of directory hierarchies*/
+#define FS_XFLAG_HUGE_FILE 0x04000000 /* set to each huge file */
+#define FS_XFLAG_EXTENTS 0x08000000 /* inode uses extents */
+#define FS_XFLAG_EA_INODE 0x10000000 /* inode used for large EA */
+#define FS_XFLAG_EOFBLOCKS 0x20000000 /* blocks allocated beyond EOF */
+#define FS_XFLAG_INLINE_DATA 0x40000000 /* inode has inline data. */
+#define FS_XFLAG_HASATTR 0x80000000 /* no DIFLAG for this */
+
#define NR_FILE 8192 /* this can well be larger on a larger system */
@@ -163,6 +219,8 @@ struct inodes_stat_t {
#define FS_IOC_GETVERSION _IOR('v', 1, long)
#define FS_IOC_SETVERSION _IOW('v', 2, long)
#define FS_IOC_FIEMAP _IOWR('f', 11, struct fiemap)
+#define FS_IOC_FSGETXATTR _IOR('f', 31, struct fsxattr)
+#define FS_IOC_FSSETXATTR _IOW('f', 32, struct fsxattr)
#define FS_IOC32_GETFLAGS _IOR('f', 1, int)
#define FS_IOC32_SETFLAGS _IOW('f', 2, int)
#define FS_IOC32_GETVERSION _IOR('v', 1, int)
--
1.7.1
^ permalink raw reply related [flat|nested] 37+ messages in thread* Re: [v8 4/5] ext4: adds FS_IOC_FSSETXATTR/FS_IOC_FSGETXATTR interface support
2014-12-09 5:22 ` [v8 4/5] ext4: adds FS_IOC_FSSETXATTR/FS_IOC_FSGETXATTR interface support Li Xi
@ 2014-12-09 22:57 ` Dave Chinner
2015-01-22 15:20 ` Konstantin Khlebnikov
2015-01-22 15:28 ` Konstantin Khlebnikov
1 sibling, 1 reply; 37+ messages in thread
From: Dave Chinner @ 2014-12-09 22:57 UTC (permalink / raw)
To: Li Xi
Cc: linux-fsdevel, linux-ext4, linux-api, tytso, adilger, jack, viro,
hch, dmonakhov
On Tue, Dec 09, 2014 at 01:22:27PM +0800, Li Xi wrote:
> This patch adds FS_IOC_FSSETXATTR/FS_IOC_FSGETXATTR ioctl interface
> support for ext4. The interface is kept consistent with
> XFS_IOC_FSGETXATTR/XFS_IOC_FSGETXATTR.
>
> Signed-off-by: Li Xi <lixi@ddn.com>
> ---
> fs/ext4/ext4.h | 111 ++++++++++++++++
> fs/ext4/ioctl.c | 330 +++++++++++++++++++++++++++++++++--------------
> fs/xfs/xfs_fs.h | 47 +++-----
> include/uapi/linux/fs.h | 58 ++++++++
> 4 files changed, 418 insertions(+), 128 deletions(-)
>
> diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
> index 136e18c..43a2a88 100644
> --- a/fs/ext4/ext4.h
> +++ b/fs/ext4/ext4.h
> @@ -384,6 +384,115 @@ struct flex_groups {
> #define EXT4_FL_USER_VISIBLE 0x204BDFFF /* User visible flags */
> #define EXT4_FL_USER_MODIFIABLE 0x204380FF /* User modifiable flags */
>
> +/* Transfer internal flags to xflags */
> +static inline __u32 ext4_iflags_to_xflags(unsigned long iflags)
> +{
> + __u32 xflags = 0;
> +
> + if (iflags & EXT4_SECRM_FL)
> + xflags |= FS_XFLAG_SECRM;
> + if (iflags & EXT4_UNRM_FL)
> + xflags |= FS_XFLAG_UNRM;
> + if (iflags & EXT4_COMPR_FL)
> + xflags |= FS_XFLAG_COMPR;
....
NACK.
> + if (iflags & EXT4_SYNC_FL)
> + xflags |= FS_XFLAG_SYNC;
> + if (iflags & EXT4_IMMUTABLE_FL)
> + xflags |= FS_XFLAG_IMMUTABLE;
> + if (iflags & EXT4_APPEND_FL)
> + xflags |= FS_XFLAG_APPEND;
> + if (iflags & EXT4_NODUMP_FL)
> + xflags |= FS_XFLAG_NODUMP;
> + if (iflags & EXT4_NOATIME_FL)
> + xflags |= FS_XFLAG_NOATIME;
These are OK because they already exist in the interface, but all
the ext4 specific flags you've added have no place in this patchset.
> +
> /* Flags that should be inherited by new inodes from their parent. */
> #define EXT4_FL_INHERITED (EXT4_SECRM_FL | EXT4_UNRM_FL | EXT4_COMPR_FL |\
> EXT4_SYNC_FL | EXT4_NODUMP_FL | EXT4_NOATIME_FL |\
> @@ -606,6 +715,8 @@ enum {
> #define EXT4_IOC_RESIZE_FS _IOW('f', 16, __u64)
> #define EXT4_IOC_SWAP_BOOT _IO('f', 17)
> #define EXT4_IOC_PRECACHE_EXTENTS _IO('f', 18)
> +#define EXT4_IOC_FSGETXATTR FS_IOC_FSGETXATTR
> +#define EXT4_IOC_FSSETXATTR FS_IOC_FSSETXATTR
NACK. Userspace only needs FS_IOC_FS[GS]ETXATTR so that it works across
all filesystems. We need to retain XFS_IOC_FS[GS]ETXATTR so we
don't break existing userspace tools, but we do not need new
filesystem specific definitions anywhere.
> diff --git a/include/uapi/linux/fs.h b/include/uapi/linux/fs.h
> index fcbf647..872fed5 100644
> --- a/include/uapi/linux/fs.h
> +++ b/include/uapi/linux/fs.h
> @@ -58,6 +58,62 @@ struct inodes_stat_t {
> long dummy[5]; /* padding for sysctl ABI compatibility */
> };
>
> +/*
> + * Extend attribute flags. These should be or-ed together to figure out what
> + * is valid.
> + */
> +#define FSX_XFLAGS (1 << 0)
> +#define FSX_EXTSIZE (1 << 1)
> +#define FSX_NEXTENTS (1 << 2)
> +#define FSX_PROJID (1 << 3)
NACK.
I've said this more than once: these are *private to XFS's
implementation* and are not be part of the user interface. Do not
move them from their existing location.
> +
> +/*
> + * Structure for FS_IOC_FSGETXATTR and FS_IOC_FSSETXATTR.
> + */
> +struct fsxattr {
> + __u32 fsx_xflags; /* xflags field value (get/set) */
> + __u32 fsx_extsize; /* extsize field value (get/set)*/
> + __u32 fsx_nextents; /* nextents field value (get) */
> + __u32 fsx_projid; /* project identifier (get/set) */
> + unsigned char fsx_pad[12];
> +};
> +
> +/*
> + * Flags for the fsx_xflags field
> + */
> +#define FS_XFLAG_REALTIME 0x00000001 /* data in realtime volume */
> +#define FS_XFLAG_PREALLOC 0x00000002 /* preallocated file extents */
> +#define FS_XFLAG_SECRM 0x00000004 /* secure deletion */
NACK - ext4 specific.
> +#define FS_XFLAG_IMMUTABLE 0x00000008 /* file cannot be modified */
> +#define FS_XFLAG_APPEND 0x00000010 /* all writes append */
> +#define FS_XFLAG_SYNC 0x00000020 /* all writes synchronous */
> +#define FS_XFLAG_NOATIME 0x00000040 /* do not update access time */
> +#define FS_XFLAG_NODUMP 0x00000080 /* do not include in backups */
> +#define FS_XFLAG_RTINHERIT 0x00000100 /* create with rt bit set */
> +#define FS_XFLAG_PROJINHERIT 0x00000200 /* create with parents projid */
> +#define FS_XFLAG_NOSYMLINKS 0x00000400 /* disallow symlink creation */
> +#define FS_XFLAG_EXTSIZE 0x00000800 /* extent size allocator hint */
> +#define FS_XFLAG_EXTSZINHERIT 0x00001000 /* inherit inode extent size */
> +#define FS_XFLAG_NODEFRAG 0x00002000 /* do not defragment */
> +#define FS_XFLAG_FILESTREAM 0x00004000 /* use filestream allocator */
existing flags.
> +#define FS_XFLAG_UNRM 0x00008000 /* undelete */
> +#define FS_XFLAG_COMPR 0x00010000 /* compress file */
> +#define FS_XFLAG_COMPRBLK 0x00020000 /* one or more compressed clusters */
> +#define FS_XFLAG_NOCOMPR 0x00040000 /* don't compress */
> +#define FS_XFLAG_ECOMPR 0x00080000 /* compression error */
> +#define FS_XFLAG_INDEX 0x00100000 /* hash-indexed directory */
> +#define FS_XFLAG_IMAGIC 0x00200000 /* AFS directory */
> +#define FS_XFLAG_JOURNAL_DATA 0x00400000 /* file data should be journaled */
> +#define FS_XFLAG_NOTAIL 0x00800000 /* file tail should not be merged */
> +#define FS_XFLAG_DIRSYNC 0x01000000 /* dirsync behaviour (directories only) */
> +#define FS_XFLAG_TOPDIR 0x02000000 /* top of directory hierarchies*/
> +#define FS_XFLAG_HUGE_FILE 0x04000000 /* set to each huge file */
> +#define FS_XFLAG_EXTENTS 0x08000000 /* inode uses extents */
> +#define FS_XFLAG_EA_INODE 0x10000000 /* inode used for large EA */
> +#define FS_XFLAG_EOFBLOCKS 0x20000000 /* blocks allocated beyond EOF */
> +#define FS_XFLAG_INLINE_DATA 0x40000000 /* inode has inline data. */
And a bunch more ext4 specific flags that *uses all the remaining
flag space*. At minimum, we need to keep space in this existing
flags field for flags to future indication of how the padding is
used, so that's yet another NACK.
Further, none of these have any relevance to project quotas so
should not be a part of this patchset. Nor are they relevant to any
other filesystem, and many are duplicated by information you can get
from FIEMAP and other interfaces. NACK, again.
Because I'm getting annoyed at being repeatedly ignored about what
needs to be done here, I'm now going to shout a bit. DO NOT CHANGE
THE INTERFACE. DO NOT ADD any new flags to the interface. DO NOT
REDEFINE how the interface works. DO NOT "ext4-ise" the interface.
The only changes to the interface code should be moving the XFS
definitions and renaming them so as to provide the new generic
ioctl definition as well as the historic XFS definitions. The ext4
implementation needs to be done in a separate patch to the interface
rename, and it must only implement the functionality the interface
already provides. Anything else is outside the scope of this
patchset and requires separate discussion.
Cheers,
Dave.
--
Dave Chinner
david@fromorbit.com
^ permalink raw reply [flat|nested] 37+ messages in thread* Re: [v8 4/5] ext4: adds FS_IOC_FSSETXATTR/FS_IOC_FSGETXATTR interface support
2014-12-09 22:57 ` Dave Chinner
@ 2015-01-22 15:20 ` Konstantin Khlebnikov
2015-01-22 15:59 ` Jan Kara
0 siblings, 1 reply; 37+ messages in thread
From: Konstantin Khlebnikov @ 2015-01-22 15:20 UTC (permalink / raw)
To: Dave Chinner, Li Xi
Cc: linux-fsdevel, linux-ext4, linux-api, tytso, adilger, jack, viro,
hch, dmonakhov
On 10.12.2014 01:57, Dave Chinner wrote:
> On Tue, Dec 09, 2014 at 01:22:27PM +0800, Li Xi wrote:
>> This patch adds FS_IOC_FSSETXATTR/FS_IOC_FSGETXATTR ioctl interface
>> support for ext4. The interface is kept consistent with
>> XFS_IOC_FSGETXATTR/XFS_IOC_FSGETXATTR.
>>
>> Signed-off-by: Li Xi <lixi@ddn.com>
>> ---
>> fs/ext4/ext4.h | 111 ++++++++++++++++
>> fs/ext4/ioctl.c | 330 +++++++++++++++++++++++++++++++++--------------
>> fs/xfs/xfs_fs.h | 47 +++-----
>> include/uapi/linux/fs.h | 58 ++++++++
>> 4 files changed, 418 insertions(+), 128 deletions(-)
>>
>> diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
>> index 136e18c..43a2a88 100644
>> --- a/fs/ext4/ext4.h
>> +++ b/fs/ext4/ext4.h
>> @@ -384,6 +384,115 @@ struct flex_groups {
>> #define EXT4_FL_USER_VISIBLE 0x204BDFFF /* User visible flags */
>> #define EXT4_FL_USER_MODIFIABLE 0x204380FF /* User modifiable flags */
>>
>> +/* Transfer internal flags to xflags */
>> +static inline __u32 ext4_iflags_to_xflags(unsigned long iflags)
>> +{
>> + __u32 xflags = 0;
>> +
>> + if (iflags & EXT4_SECRM_FL)
>> + xflags |= FS_XFLAG_SECRM;
>> + if (iflags & EXT4_UNRM_FL)
>> + xflags |= FS_XFLAG_UNRM;
>> + if (iflags & EXT4_COMPR_FL)
>> + xflags |= FS_XFLAG_COMPR;
> ....
>
> NACK.
>
>> + if (iflags & EXT4_SYNC_FL)
>> + xflags |= FS_XFLAG_SYNC;
>> + if (iflags & EXT4_IMMUTABLE_FL)
>> + xflags |= FS_XFLAG_IMMUTABLE;
>> + if (iflags & EXT4_APPEND_FL)
>> + xflags |= FS_XFLAG_APPEND;
>> + if (iflags & EXT4_NODUMP_FL)
>> + xflags |= FS_XFLAG_NODUMP;
>> + if (iflags & EXT4_NOATIME_FL)
>> + xflags |= FS_XFLAG_NOATIME;
>
> These are OK because they already exist in the interface, but all
> the ext4 specific flags you've added have no place in this patchset.
>
>
>> +
>> /* Flags that should be inherited by new inodes from their parent. */
>> #define EXT4_FL_INHERITED (EXT4_SECRM_FL | EXT4_UNRM_FL | EXT4_COMPR_FL |\
>> EXT4_SYNC_FL | EXT4_NODUMP_FL | EXT4_NOATIME_FL |\
>> @@ -606,6 +715,8 @@ enum {
>> #define EXT4_IOC_RESIZE_FS _IOW('f', 16, __u64)
>> #define EXT4_IOC_SWAP_BOOT _IO('f', 17)
>> #define EXT4_IOC_PRECACHE_EXTENTS _IO('f', 18)
>> +#define EXT4_IOC_FSGETXATTR FS_IOC_FSGETXATTR
>> +#define EXT4_IOC_FSSETXATTR FS_IOC_FSSETXATTR
>
> NACK. Userspace only needs FS_IOC_FS[GS]ETXATTR so that it works across
> all filesystems. We need to retain XFS_IOC_FS[GS]ETXATTR so we
> don't break existing userspace tools, but we do not need new
> filesystem specific definitions anywhere.
>
>> diff --git a/include/uapi/linux/fs.h b/include/uapi/linux/fs.h
>> index fcbf647..872fed5 100644
>> --- a/include/uapi/linux/fs.h
>> +++ b/include/uapi/linux/fs.h
>> @@ -58,6 +58,62 @@ struct inodes_stat_t {
>> long dummy[5]; /* padding for sysctl ABI compatibility */
>> };
>>
>> +/*
>> + * Extend attribute flags. These should be or-ed together to figure out what
>> + * is valid.
>> + */
>> +#define FSX_XFLAGS (1 << 0)
>> +#define FSX_EXTSIZE (1 << 1)
>> +#define FSX_NEXTENTS (1 << 2)
>> +#define FSX_PROJID (1 << 3)
>
> NACK.
>
> I've said this more than once: these are *private to XFS's
> implementation* and are not be part of the user interface. Do not
> move them from their existing location.
>
>
>> +
>> +/*
>> + * Structure for FS_IOC_FSGETXATTR and FS_IOC_FSSETXATTR.
>> + */
>> +struct fsxattr {
>> + __u32 fsx_xflags; /* xflags field value (get/set) */
>> + __u32 fsx_extsize; /* extsize field value (get/set)*/
>> + __u32 fsx_nextents; /* nextents field value (get) */
>> + __u32 fsx_projid; /* project identifier (get/set) */
>> + unsigned char fsx_pad[12];
>> +};
>> +
>> +/*
>> + * Flags for the fsx_xflags field
>> + */
>> +#define FS_XFLAG_REALTIME 0x00000001 /* data in realtime volume */
>> +#define FS_XFLAG_PREALLOC 0x00000002 /* preallocated file extents */
>> +#define FS_XFLAG_SECRM 0x00000004 /* secure deletion */
>
> NACK - ext4 specific.
>
>> +#define FS_XFLAG_IMMUTABLE 0x00000008 /* file cannot be modified */
>> +#define FS_XFLAG_APPEND 0x00000010 /* all writes append */
>> +#define FS_XFLAG_SYNC 0x00000020 /* all writes synchronous */
>> +#define FS_XFLAG_NOATIME 0x00000040 /* do not update access time */
>> +#define FS_XFLAG_NODUMP 0x00000080 /* do not include in backups */
>> +#define FS_XFLAG_RTINHERIT 0x00000100 /* create with rt bit set */
>> +#define FS_XFLAG_PROJINHERIT 0x00000200 /* create with parents projid */
>> +#define FS_XFLAG_NOSYMLINKS 0x00000400 /* disallow symlink creation */
>> +#define FS_XFLAG_EXTSIZE 0x00000800 /* extent size allocator hint */
>> +#define FS_XFLAG_EXTSZINHERIT 0x00001000 /* inherit inode extent size */
>> +#define FS_XFLAG_NODEFRAG 0x00002000 /* do not defragment */
>> +#define FS_XFLAG_FILESTREAM 0x00004000 /* use filestream allocator */
>
> existing flags.
>
>> +#define FS_XFLAG_UNRM 0x00008000 /* undelete */
>> +#define FS_XFLAG_COMPR 0x00010000 /* compress file */
>> +#define FS_XFLAG_COMPRBLK 0x00020000 /* one or more compressed clusters */
>> +#define FS_XFLAG_NOCOMPR 0x00040000 /* don't compress */
>> +#define FS_XFLAG_ECOMPR 0x00080000 /* compression error */
>> +#define FS_XFLAG_INDEX 0x00100000 /* hash-indexed directory */
>> +#define FS_XFLAG_IMAGIC 0x00200000 /* AFS directory */
>> +#define FS_XFLAG_JOURNAL_DATA 0x00400000 /* file data should be journaled */
>> +#define FS_XFLAG_NOTAIL 0x00800000 /* file tail should not be merged */
>> +#define FS_XFLAG_DIRSYNC 0x01000000 /* dirsync behaviour (directories only) */
>> +#define FS_XFLAG_TOPDIR 0x02000000 /* top of directory hierarchies*/
>> +#define FS_XFLAG_HUGE_FILE 0x04000000 /* set to each huge file */
>> +#define FS_XFLAG_EXTENTS 0x08000000 /* inode uses extents */
>> +#define FS_XFLAG_EA_INODE 0x10000000 /* inode used for large EA */
>> +#define FS_XFLAG_EOFBLOCKS 0x20000000 /* blocks allocated beyond EOF */
>> +#define FS_XFLAG_INLINE_DATA 0x40000000 /* inode has inline data. */
>
> And a bunch more ext4 specific flags that *uses all the remaining
> flag space*. At minimum, we need to keep space in this existing
> flags field for flags to future indication of how the padding is
> used, so that's yet another NACK.
>
> Further, none of these have any relevance to project quotas so
> should not be a part of this patchset. Nor are they relevant to any
> other filesystem, and many are duplicated by information you can get
> from FIEMAP and other interfaces. NACK, again.
>
> Because I'm getting annoyed at being repeatedly ignored about what
> needs to be done here, I'm now going to shout a bit. DO NOT CHANGE
> THE INTERFACE. DO NOT ADD any new flags to the interface. DO NOT
> REDEFINE how the interface works. DO NOT "ext4-ise" the interface.
>
> The only changes to the interface code should be moving the XFS
> definitions and renaming them so as to provide the new generic
> ioctl definition as well as the historic XFS definitions. The ext4
> implementation needs to be done in a separate patch to the interface
> rename, and it must only implement the functionality the interface
> already provides. Anything else is outside the scope of this
> patchset and requires separate discussion.
What reason for reusing XFS ioctl?
As I see quota tools from xfsprogs checks filesystem name and seems
like they wouldn't work without upgrade. e2fsprogs have to be updated
updated anyway to support changes in layout. So, in this case we could
design new generic ioctl/syscall interface for that. For example add
new commands to quotactl() instead of yet another obscure ioctl.
Also: is quota for project-id '0' really required for something?
It adds overhead but I don't see any use-cases for that.
>
> Cheers,
>
> Dave.
>
^ permalink raw reply [flat|nested] 37+ messages in thread* Re: [v8 4/5] ext4: adds FS_IOC_FSSETXATTR/FS_IOC_FSGETXATTR interface support
2015-01-22 15:20 ` Konstantin Khlebnikov
@ 2015-01-22 15:59 ` Jan Kara
2015-01-22 18:35 ` Konstantin Khlebnikov
[not found] ` <20150122155900.GB3062-+0h/O2h83AeN3ZZ/Hiejyg@public.gmane.org>
0 siblings, 2 replies; 37+ messages in thread
From: Jan Kara @ 2015-01-22 15:59 UTC (permalink / raw)
To: Konstantin Khlebnikov
Cc: Dave Chinner, Li Xi, linux-fsdevel, linux-ext4, linux-api, tytso,
adilger, jack, viro, hch, dmonakhov
On Thu 22-01-15 18:20:15, Konstantin Khlebnikov wrote:
> On 10.12.2014 01:57, Dave Chinner wrote:
> >On Tue, Dec 09, 2014 at 01:22:27PM +0800, Li Xi wrote:
> >>This patch adds FS_IOC_FSSETXATTR/FS_IOC_FSGETXATTR ioctl interface
> >>support for ext4. The interface is kept consistent with
> >>XFS_IOC_FSGETXATTR/XFS_IOC_FSGETXATTR.
> >>
> >>Signed-off-by: Li Xi <lixi@ddn.com>
> >>---
> >> fs/ext4/ext4.h | 111 ++++++++++++++++
> >> fs/ext4/ioctl.c | 330 +++++++++++++++++++++++++++++++++--------------
> >> fs/xfs/xfs_fs.h | 47 +++-----
> >> include/uapi/linux/fs.h | 58 ++++++++
> >> 4 files changed, 418 insertions(+), 128 deletions(-)
> >>
> >>diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
> >>index 136e18c..43a2a88 100644
> >>--- a/fs/ext4/ext4.h
> >>+++ b/fs/ext4/ext4.h
> >>@@ -384,6 +384,115 @@ struct flex_groups {
> >> #define EXT4_FL_USER_VISIBLE 0x204BDFFF /* User visible flags */
> >> #define EXT4_FL_USER_MODIFIABLE 0x204380FF /* User modifiable flags */
> >>
> >>+/* Transfer internal flags to xflags */
> >>+static inline __u32 ext4_iflags_to_xflags(unsigned long iflags)
> >>+{
> >>+ __u32 xflags = 0;
> >>+
> >>+ if (iflags & EXT4_SECRM_FL)
> >>+ xflags |= FS_XFLAG_SECRM;
> >>+ if (iflags & EXT4_UNRM_FL)
> >>+ xflags |= FS_XFLAG_UNRM;
> >>+ if (iflags & EXT4_COMPR_FL)
> >>+ xflags |= FS_XFLAG_COMPR;
> >....
> >
> >NACK.
> >
> >>+ if (iflags & EXT4_SYNC_FL)
> >>+ xflags |= FS_XFLAG_SYNC;
> >>+ if (iflags & EXT4_IMMUTABLE_FL)
> >>+ xflags |= FS_XFLAG_IMMUTABLE;
> >>+ if (iflags & EXT4_APPEND_FL)
> >>+ xflags |= FS_XFLAG_APPEND;
> >>+ if (iflags & EXT4_NODUMP_FL)
> >>+ xflags |= FS_XFLAG_NODUMP;
> >>+ if (iflags & EXT4_NOATIME_FL)
> >>+ xflags |= FS_XFLAG_NOATIME;
> >
> >These are OK because they already exist in the interface, but all
> >the ext4 specific flags you've added have no place in this patchset.
> >
> >
> >>+
> >> /* Flags that should be inherited by new inodes from their parent. */
> >> #define EXT4_FL_INHERITED (EXT4_SECRM_FL | EXT4_UNRM_FL | EXT4_COMPR_FL |\
> >> EXT4_SYNC_FL | EXT4_NODUMP_FL | EXT4_NOATIME_FL |\
> >>@@ -606,6 +715,8 @@ enum {
> >> #define EXT4_IOC_RESIZE_FS _IOW('f', 16, __u64)
> >> #define EXT4_IOC_SWAP_BOOT _IO('f', 17)
> >> #define EXT4_IOC_PRECACHE_EXTENTS _IO('f', 18)
> >>+#define EXT4_IOC_FSGETXATTR FS_IOC_FSGETXATTR
> >>+#define EXT4_IOC_FSSETXATTR FS_IOC_FSSETXATTR
> >
> >NACK. Userspace only needs FS_IOC_FS[GS]ETXATTR so that it works across
> >all filesystems. We need to retain XFS_IOC_FS[GS]ETXATTR so we
> >don't break existing userspace tools, but we do not need new
> >filesystem specific definitions anywhere.
> >
> >>diff --git a/include/uapi/linux/fs.h b/include/uapi/linux/fs.h
> >>index fcbf647..872fed5 100644
> >>--- a/include/uapi/linux/fs.h
> >>+++ b/include/uapi/linux/fs.h
> >>@@ -58,6 +58,62 @@ struct inodes_stat_t {
> >> long dummy[5]; /* padding for sysctl ABI compatibility */
> >> };
> >>
> >>+/*
> >>+ * Extend attribute flags. These should be or-ed together to figure out what
> >>+ * is valid.
> >>+ */
> >>+#define FSX_XFLAGS (1 << 0)
> >>+#define FSX_EXTSIZE (1 << 1)
> >>+#define FSX_NEXTENTS (1 << 2)
> >>+#define FSX_PROJID (1 << 3)
> >
> >NACK.
> >
> >I've said this more than once: these are *private to XFS's
> >implementation* and are not be part of the user interface. Do not
> >move them from their existing location.
> >
> >
> >>+
> >>+/*
> >>+ * Structure for FS_IOC_FSGETXATTR and FS_IOC_FSSETXATTR.
> >>+ */
> >>+struct fsxattr {
> >>+ __u32 fsx_xflags; /* xflags field value (get/set) */
> >>+ __u32 fsx_extsize; /* extsize field value (get/set)*/
> >>+ __u32 fsx_nextents; /* nextents field value (get) */
> >>+ __u32 fsx_projid; /* project identifier (get/set) */
> >>+ unsigned char fsx_pad[12];
> >>+};
> >>+
> >>+/*
> >>+ * Flags for the fsx_xflags field
> >>+ */
> >>+#define FS_XFLAG_REALTIME 0x00000001 /* data in realtime volume */
> >>+#define FS_XFLAG_PREALLOC 0x00000002 /* preallocated file extents */
> >>+#define FS_XFLAG_SECRM 0x00000004 /* secure deletion */
> >
> >NACK - ext4 specific.
> >
> >>+#define FS_XFLAG_IMMUTABLE 0x00000008 /* file cannot be modified */
> >>+#define FS_XFLAG_APPEND 0x00000010 /* all writes append */
> >>+#define FS_XFLAG_SYNC 0x00000020 /* all writes synchronous */
> >>+#define FS_XFLAG_NOATIME 0x00000040 /* do not update access time */
> >>+#define FS_XFLAG_NODUMP 0x00000080 /* do not include in backups */
> >>+#define FS_XFLAG_RTINHERIT 0x00000100 /* create with rt bit set */
> >>+#define FS_XFLAG_PROJINHERIT 0x00000200 /* create with parents projid */
> >>+#define FS_XFLAG_NOSYMLINKS 0x00000400 /* disallow symlink creation */
> >>+#define FS_XFLAG_EXTSIZE 0x00000800 /* extent size allocator hint */
> >>+#define FS_XFLAG_EXTSZINHERIT 0x00001000 /* inherit inode extent size */
> >>+#define FS_XFLAG_NODEFRAG 0x00002000 /* do not defragment */
> >>+#define FS_XFLAG_FILESTREAM 0x00004000 /* use filestream allocator */
> >
> >existing flags.
> >
> >>+#define FS_XFLAG_UNRM 0x00008000 /* undelete */
> >>+#define FS_XFLAG_COMPR 0x00010000 /* compress file */
> >>+#define FS_XFLAG_COMPRBLK 0x00020000 /* one or more compressed clusters */
> >>+#define FS_XFLAG_NOCOMPR 0x00040000 /* don't compress */
> >>+#define FS_XFLAG_ECOMPR 0x00080000 /* compression error */
> >>+#define FS_XFLAG_INDEX 0x00100000 /* hash-indexed directory */
> >>+#define FS_XFLAG_IMAGIC 0x00200000 /* AFS directory */
> >>+#define FS_XFLAG_JOURNAL_DATA 0x00400000 /* file data should be journaled */
> >>+#define FS_XFLAG_NOTAIL 0x00800000 /* file tail should not be merged */
> >>+#define FS_XFLAG_DIRSYNC 0x01000000 /* dirsync behaviour (directories only) */
> >>+#define FS_XFLAG_TOPDIR 0x02000000 /* top of directory hierarchies*/
> >>+#define FS_XFLAG_HUGE_FILE 0x04000000 /* set to each huge file */
> >>+#define FS_XFLAG_EXTENTS 0x08000000 /* inode uses extents */
> >>+#define FS_XFLAG_EA_INODE 0x10000000 /* inode used for large EA */
> >>+#define FS_XFLAG_EOFBLOCKS 0x20000000 /* blocks allocated beyond EOF */
> >>+#define FS_XFLAG_INLINE_DATA 0x40000000 /* inode has inline data. */
> >
> >And a bunch more ext4 specific flags that *uses all the remaining
> >flag space*. At minimum, we need to keep space in this existing
> >flags field for flags to future indication of how the padding is
> >used, so that's yet another NACK.
> >
> >Further, none of these have any relevance to project quotas so
> >should not be a part of this patchset. Nor are they relevant to any
> >other filesystem, and many are duplicated by information you can get
> >from FIEMAP and other interfaces. NACK, again.
> >
> >Because I'm getting annoyed at being repeatedly ignored about what
> >needs to be done here, I'm now going to shout a bit. DO NOT CHANGE
> >THE INTERFACE. DO NOT ADD any new flags to the interface. DO NOT
> >REDEFINE how the interface works. DO NOT "ext4-ise" the interface.
> >
> >The only changes to the interface code should be moving the XFS
> >definitions and renaming them so as to provide the new generic
> >ioctl definition as well as the historic XFS definitions. The ext4
> >implementation needs to be done in a separate patch to the interface
> >rename, and it must only implement the functionality the interface
> >already provides. Anything else is outside the scope of this
> >patchset and requires separate discussion.
>
> What reason for reusing XFS ioctl?
>
> As I see quota tools from xfsprogs checks filesystem name and seems
> like they wouldn't work without upgrade. e2fsprogs have to be updated
> updated anyway to support changes in layout. So, in this case we could
> design new generic ioctl/syscall interface for that. For example add
> new commands to quotactl() instead of yet another obscure ioctl.
Using quotactl() for setting / getting project ID is IMO a wrong fit.
quotactl() is used to manipulate quota usage & limits but not file
properties. And reusing XFS ioctl is IMHO better than inventing a new
ioctl - ext4 can use the same ioctl as XFS just fine. It's only that Li Xi
mixed in unrelated changes to the ext4 support for that ioctl.
> Also: is quota for project-id '0' really required for something?
> It adds overhead but I don't see any use-cases for that.
But only if filesystem has project quota feature enabled, no? That
doesn't concern me too much since the overhead doesn't seem to big and when
you enable project quotas you likely want to use them ;-). But if you are
concerned, I'm not strictly opposed to special casing of project id 0. But
I'd like to see how much speed you gain by that before complicating the
code...
Honza
--
Jan Kara <jack@suse.cz>
SUSE Labs, CR
^ permalink raw reply [flat|nested] 37+ messages in thread* Re: [v8 4/5] ext4: adds FS_IOC_FSSETXATTR/FS_IOC_FSGETXATTR interface support
2015-01-22 15:59 ` Jan Kara
@ 2015-01-22 18:35 ` Konstantin Khlebnikov
[not found] ` <20150122155900.GB3062-+0h/O2h83AeN3ZZ/Hiejyg@public.gmane.org>
1 sibling, 0 replies; 37+ messages in thread
From: Konstantin Khlebnikov @ 2015-01-22 18:35 UTC (permalink / raw)
To: Jan Kara
Cc: Konstantin Khlebnikov, Dave Chinner, Li Xi, linux-fsdevel,
linux-ext4, Linux API, tytso, adilger, Al Viro, hch,
Дмитрий
Монахов
On Thu, Jan 22, 2015 at 6:59 PM, Jan Kara <jack@suse.cz> wrote:
> On Thu 22-01-15 18:20:15, Konstantin Khlebnikov wrote:
>> On 10.12.2014 01:57, Dave Chinner wrote:
>> >On Tue, Dec 09, 2014 at 01:22:27PM +0800, Li Xi wrote:
>> >>This patch adds FS_IOC_FSSETXATTR/FS_IOC_FSGETXATTR ioctl interface
>> >>support for ext4. The interface is kept consistent with
>> >>XFS_IOC_FSGETXATTR/XFS_IOC_FSGETXATTR.
>> >>
>> >>Signed-off-by: Li Xi <lixi@ddn.com>
>> >>---
>> >> fs/ext4/ext4.h | 111 ++++++++++++++++
>> >> fs/ext4/ioctl.c | 330 +++++++++++++++++++++++++++++++++--------------
>> >> fs/xfs/xfs_fs.h | 47 +++-----
>> >> include/uapi/linux/fs.h | 58 ++++++++
>> >> 4 files changed, 418 insertions(+), 128 deletions(-)
>> >>
>> >>diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
>> >>index 136e18c..43a2a88 100644
>> >>--- a/fs/ext4/ext4.h
>> >>+++ b/fs/ext4/ext4.h
>> >>@@ -384,6 +384,115 @@ struct flex_groups {
>> >> #define EXT4_FL_USER_VISIBLE 0x204BDFFF /* User visible flags */
>> >> #define EXT4_FL_USER_MODIFIABLE 0x204380FF /* User modifiable flags */
>> >>
>> >>+/* Transfer internal flags to xflags */
>> >>+static inline __u32 ext4_iflags_to_xflags(unsigned long iflags)
>> >>+{
>> >>+ __u32 xflags = 0;
>> >>+
>> >>+ if (iflags & EXT4_SECRM_FL)
>> >>+ xflags |= FS_XFLAG_SECRM;
>> >>+ if (iflags & EXT4_UNRM_FL)
>> >>+ xflags |= FS_XFLAG_UNRM;
>> >>+ if (iflags & EXT4_COMPR_FL)
>> >>+ xflags |= FS_XFLAG_COMPR;
>> >....
>> >
>> >NACK.
>> >
>> >>+ if (iflags & EXT4_SYNC_FL)
>> >>+ xflags |= FS_XFLAG_SYNC;
>> >>+ if (iflags & EXT4_IMMUTABLE_FL)
>> >>+ xflags |= FS_XFLAG_IMMUTABLE;
>> >>+ if (iflags & EXT4_APPEND_FL)
>> >>+ xflags |= FS_XFLAG_APPEND;
>> >>+ if (iflags & EXT4_NODUMP_FL)
>> >>+ xflags |= FS_XFLAG_NODUMP;
>> >>+ if (iflags & EXT4_NOATIME_FL)
>> >>+ xflags |= FS_XFLAG_NOATIME;
>> >
>> >These are OK because they already exist in the interface, but all
>> >the ext4 specific flags you've added have no place in this patchset.
>> >
>> >
>> >>+
>> >> /* Flags that should be inherited by new inodes from their parent. */
>> >> #define EXT4_FL_INHERITED (EXT4_SECRM_FL | EXT4_UNRM_FL | EXT4_COMPR_FL |\
>> >> EXT4_SYNC_FL | EXT4_NODUMP_FL | EXT4_NOATIME_FL |\
>> >>@@ -606,6 +715,8 @@ enum {
>> >> #define EXT4_IOC_RESIZE_FS _IOW('f', 16, __u64)
>> >> #define EXT4_IOC_SWAP_BOOT _IO('f', 17)
>> >> #define EXT4_IOC_PRECACHE_EXTENTS _IO('f', 18)
>> >>+#define EXT4_IOC_FSGETXATTR FS_IOC_FSGETXATTR
>> >>+#define EXT4_IOC_FSSETXATTR FS_IOC_FSSETXATTR
>> >
>> >NACK. Userspace only needs FS_IOC_FS[GS]ETXATTR so that it works across
>> >all filesystems. We need to retain XFS_IOC_FS[GS]ETXATTR so we
>> >don't break existing userspace tools, but we do not need new
>> >filesystem specific definitions anywhere.
>> >
>> >>diff --git a/include/uapi/linux/fs.h b/include/uapi/linux/fs.h
>> >>index fcbf647..872fed5 100644
>> >>--- a/include/uapi/linux/fs.h
>> >>+++ b/include/uapi/linux/fs.h
>> >>@@ -58,6 +58,62 @@ struct inodes_stat_t {
>> >> long dummy[5]; /* padding for sysctl ABI compatibility */
>> >> };
>> >>
>> >>+/*
>> >>+ * Extend attribute flags. These should be or-ed together to figure out what
>> >>+ * is valid.
>> >>+ */
>> >>+#define FSX_XFLAGS (1 << 0)
>> >>+#define FSX_EXTSIZE (1 << 1)
>> >>+#define FSX_NEXTENTS (1 << 2)
>> >>+#define FSX_PROJID (1 << 3)
>> >
>> >NACK.
>> >
>> >I've said this more than once: these are *private to XFS's
>> >implementation* and are not be part of the user interface. Do not
>> >move them from their existing location.
>> >
>> >
>> >>+
>> >>+/*
>> >>+ * Structure for FS_IOC_FSGETXATTR and FS_IOC_FSSETXATTR.
>> >>+ */
>> >>+struct fsxattr {
>> >>+ __u32 fsx_xflags; /* xflags field value (get/set) */
>> >>+ __u32 fsx_extsize; /* extsize field value (get/set)*/
>> >>+ __u32 fsx_nextents; /* nextents field value (get) */
>> >>+ __u32 fsx_projid; /* project identifier (get/set) */
>> >>+ unsigned char fsx_pad[12];
>> >>+};
>> >>+
>> >>+/*
>> >>+ * Flags for the fsx_xflags field
>> >>+ */
>> >>+#define FS_XFLAG_REALTIME 0x00000001 /* data in realtime volume */
>> >>+#define FS_XFLAG_PREALLOC 0x00000002 /* preallocated file extents */
>> >>+#define FS_XFLAG_SECRM 0x00000004 /* secure deletion */
>> >
>> >NACK - ext4 specific.
>> >
>> >>+#define FS_XFLAG_IMMUTABLE 0x00000008 /* file cannot be modified */
>> >>+#define FS_XFLAG_APPEND 0x00000010 /* all writes append */
>> >>+#define FS_XFLAG_SYNC 0x00000020 /* all writes synchronous */
>> >>+#define FS_XFLAG_NOATIME 0x00000040 /* do not update access time */
>> >>+#define FS_XFLAG_NODUMP 0x00000080 /* do not include in backups */
>> >>+#define FS_XFLAG_RTINHERIT 0x00000100 /* create with rt bit set */
>> >>+#define FS_XFLAG_PROJINHERIT 0x00000200 /* create with parents projid */
>> >>+#define FS_XFLAG_NOSYMLINKS 0x00000400 /* disallow symlink creation */
>> >>+#define FS_XFLAG_EXTSIZE 0x00000800 /* extent size allocator hint */
>> >>+#define FS_XFLAG_EXTSZINHERIT 0x00001000 /* inherit inode extent size */
>> >>+#define FS_XFLAG_NODEFRAG 0x00002000 /* do not defragment */
>> >>+#define FS_XFLAG_FILESTREAM 0x00004000 /* use filestream allocator */
>> >
>> >existing flags.
>> >
>> >>+#define FS_XFLAG_UNRM 0x00008000 /* undelete */
>> >>+#define FS_XFLAG_COMPR 0x00010000 /* compress file */
>> >>+#define FS_XFLAG_COMPRBLK 0x00020000 /* one or more compressed clusters */
>> >>+#define FS_XFLAG_NOCOMPR 0x00040000 /* don't compress */
>> >>+#define FS_XFLAG_ECOMPR 0x00080000 /* compression error */
>> >>+#define FS_XFLAG_INDEX 0x00100000 /* hash-indexed directory */
>> >>+#define FS_XFLAG_IMAGIC 0x00200000 /* AFS directory */
>> >>+#define FS_XFLAG_JOURNAL_DATA 0x00400000 /* file data should be journaled */
>> >>+#define FS_XFLAG_NOTAIL 0x00800000 /* file tail should not be merged */
>> >>+#define FS_XFLAG_DIRSYNC 0x01000000 /* dirsync behaviour (directories only) */
>> >>+#define FS_XFLAG_TOPDIR 0x02000000 /* top of directory hierarchies*/
>> >>+#define FS_XFLAG_HUGE_FILE 0x04000000 /* set to each huge file */
>> >>+#define FS_XFLAG_EXTENTS 0x08000000 /* inode uses extents */
>> >>+#define FS_XFLAG_EA_INODE 0x10000000 /* inode used for large EA */
>> >>+#define FS_XFLAG_EOFBLOCKS 0x20000000 /* blocks allocated beyond EOF */
>> >>+#define FS_XFLAG_INLINE_DATA 0x40000000 /* inode has inline data. */
>> >
>> >And a bunch more ext4 specific flags that *uses all the remaining
>> >flag space*. At minimum, we need to keep space in this existing
>> >flags field for flags to future indication of how the padding is
>> >used, so that's yet another NACK.
>> >
>> >Further, none of these have any relevance to project quotas so
>> >should not be a part of this patchset. Nor are they relevant to any
>> >other filesystem, and many are duplicated by information you can get
>> >from FIEMAP and other interfaces. NACK, again.
>> >
>> >Because I'm getting annoyed at being repeatedly ignored about what
>> >needs to be done here, I'm now going to shout a bit. DO NOT CHANGE
>> >THE INTERFACE. DO NOT ADD any new flags to the interface. DO NOT
>> >REDEFINE how the interface works. DO NOT "ext4-ise" the interface.
>> >
>> >The only changes to the interface code should be moving the XFS
>> >definitions and renaming them so as to provide the new generic
>> >ioctl definition as well as the historic XFS definitions. The ext4
>> >implementation needs to be done in a separate patch to the interface
>> >rename, and it must only implement the functionality the interface
>> >already provides. Anything else is outside the scope of this
>> >patchset and requires separate discussion.
>>
>> What reason for reusing XFS ioctl?
>>
>> As I see quota tools from xfsprogs checks filesystem name and seems
>> like they wouldn't work without upgrade. e2fsprogs have to be updated
>> updated anyway to support changes in layout. So, in this case we could
>> design new generic ioctl/syscall interface for that. For example add
>> new commands to quotactl() instead of yet another obscure ioctl.
> Using quotactl() for setting / getting project ID is IMO a wrong fit.
> quotactl() is used to manipulate quota usage & limits but not file
> properties. And reusing XFS ioctl is IMHO better than inventing a new
> ioctl - ext4 can use the same ioctl as XFS just fine. It's only that Li Xi
> mixed in unrelated changes to the ext4 support for that ioctl.
XFS interface looks really strange for that:
struct fsxattr {
__u32 fsx_xflags; /* xflags field value (get/set) */
__u32 fsx_extsize; /* extsize field value (get/set)*/
__u32 fsx_nextents; /* nextents field value (get) */
__u32 fsx_projid; /* project identifier (get/set) */
unsigned char fsx_pad[12];
};
Where we need only one flag and one field, everything else is just a legacy.
Moreover that flag: FS_PROJINHERIT_FL is redundant. For files it's meaningless.
For directories only difference between clearing it and changing
project_id to zero is
in accounting directory itself into inode/space quota. I'm not sure if there any
use-case for accounting directory itself but not charging its content.
Well. Maybe pair of fcntl()? fcntl(fd, F_GET_PROJECT/F_SET_PROJECT, ...);
>
>> Also: is quota for project-id '0' really required for something?
>> It adds overhead but I don't see any use-cases for that.
> But only if filesystem has project quota feature enabled, no? That
> doesn't concern me too much since the overhead doesn't seem to big and when
> you enable project quotas you likely want to use them ;-). But if you are
> concerned, I'm not strictly opposed to special casing of project id 0. But
> I'd like to see how much speed you gain by that before complicating the
> code...
For non-journalled quota it's nothing but for journalled difference
might be significant.
This might be implemented without any complication as a fake inactive
quota block
which just plugs particular id.
>
> Honza
> --
> Jan Kara <jack@suse.cz>
> SUSE Labs, CR
> --
> To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
^ permalink raw reply [flat|nested] 37+ messages in thread[parent not found: <20150122155900.GB3062-+0h/O2h83AeN3ZZ/Hiejyg@public.gmane.org>]
* Re: [v8 4/5] ext4: adds FS_IOC_FSSETXATTR/FS_IOC_FSGETXATTR interface support
[not found] ` <20150122155900.GB3062-+0h/O2h83AeN3ZZ/Hiejyg@public.gmane.org>
@ 2015-01-23 1:39 ` Dave Chinner
0 siblings, 0 replies; 37+ messages in thread
From: Dave Chinner @ 2015-01-23 1:39 UTC (permalink / raw)
To: Jan Kara
Cc: Konstantin Khlebnikov, Li Xi,
linux-fsdevel-u79uwXL29TY76Z2rM5mHXA,
linux-ext4-u79uwXL29TY76Z2rM5mHXA,
linux-api-u79uwXL29TY76Z2rM5mHXA, tytso-3s7WtUTddSA,
adilger-m1MBpc4rdrD3fQ9qLvQP4Q,
viro-RmSDqhL/yNMiFSDQTTA3OLVCufUGDwFn,
hch-wEGCiKHe2LqWVfeAwA7xHQ, dmonakhov-GEFAQzZX7r8dnm+yROfE0A
On Thu, Jan 22, 2015 at 04:59:00PM +0100, Jan Kara wrote:
> On Thu 22-01-15 18:20:15, Konstantin Khlebnikov wrote:
> > Also: is quota for project-id '0' really required for something?
> > It adds overhead but I don't see any use-cases for that.
> But only if filesystem has project quota feature enabled, no? That
> doesn't concern me too much since the overhead doesn't seem to big and when
> you enable project quotas you likely want to use them ;-). But if you are
> concerned, I'm not strictly opposed to special casing of project id 0. But
> I'd like to see how much speed you gain by that before complicating the
> code...
Except that doing so will result in different behaviour between
filesystems. XFS always *accounts* inodes when quotas are enabled,
but does not allow limits to be placed on quota ID 0. Hence projid
= 0 accounts all the space not used by other project groups so
admins can easily see how much uncontrolled space is being used.
I've had admins tell me this is one of the features they liked most
about using project quotas because you can't hide from it, even as
root....
Cheers,
Dave.
--
Dave Chinner
david-FqsqvQoI3Ljby3iVrkZq2A@public.gmane.org
^ permalink raw reply [flat|nested] 37+ messages in thread
* Re: [v8 4/5] ext4: adds FS_IOC_FSSETXATTR/FS_IOC_FSGETXATTR interface support
2014-12-09 5:22 ` [v8 4/5] ext4: adds FS_IOC_FSSETXATTR/FS_IOC_FSGETXATTR interface support Li Xi
2014-12-09 22:57 ` Dave Chinner
@ 2015-01-22 15:28 ` Konstantin Khlebnikov
[not found] ` <54C11733.7080801-XoJtRXgx1JseBXzfvpsJ4g@public.gmane.org>
1 sibling, 1 reply; 37+ messages in thread
From: Konstantin Khlebnikov @ 2015-01-22 15:28 UTC (permalink / raw)
To: Li Xi, linux-fsdevel, linux-ext4, linux-api, tytso, adilger,
jack, viro, hch, dmonakhov
On 09.12.2014 08:22, Li Xi wrote:
> This patch adds FS_IOC_FSSETXATTR/FS_IOC_FSGETXATTR ioctl interface
> support for ext4. The interface is kept consistent with
> XFS_IOC_FSGETXATTR/XFS_IOC_FSGETXATTR.
>
> Signed-off-by: Li Xi <lixi@ddn.com>
> ---
> fs/ext4/ext4.h | 111 ++++++++++++++++
> fs/ext4/ioctl.c | 330 +++++++++++++++++++++++++++++++++--------------
> fs/xfs/xfs_fs.h | 47 +++-----
> include/uapi/linux/fs.h | 58 ++++++++
> 4 files changed, 418 insertions(+), 128 deletions(-)
>
> diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
> index 136e18c..43a2a88 100644
> --- a/fs/ext4/ext4.h
> +++ b/fs/ext4/ext4.h
> @@ -384,6 +384,115 @@ struct flex_groups {
> #define EXT4_FL_USER_VISIBLE 0x204BDFFF /* User visible flags */
> #define EXT4_FL_USER_MODIFIABLE 0x204380FF /* User modifiable flags */
>
> +/* Transfer internal flags to xflags */
> +static inline __u32 ext4_iflags_to_xflags(unsigned long iflags)
> +{
> + __u32 xflags = 0;
> +
> + if (iflags & EXT4_SECRM_FL)
> + xflags |= FS_XFLAG_SECRM;
> + if (iflags & EXT4_UNRM_FL)
> + xflags |= FS_XFLAG_UNRM;
> + if (iflags & EXT4_COMPR_FL)
> + xflags |= FS_XFLAG_COMPR;
> + if (iflags & EXT4_SYNC_FL)
> + xflags |= FS_XFLAG_SYNC;
> + if (iflags & EXT4_IMMUTABLE_FL)
> + xflags |= FS_XFLAG_IMMUTABLE;
> + if (iflags & EXT4_APPEND_FL)
> + xflags |= FS_XFLAG_APPEND;
> + if (iflags & EXT4_NODUMP_FL)
> + xflags |= FS_XFLAG_NODUMP;
> + if (iflags & EXT4_NOATIME_FL)
> + xflags |= FS_XFLAG_NOATIME;
> + if (iflags & EXT4_COMPRBLK_FL)
> + xflags |= FS_XFLAG_COMPRBLK;
> + if (iflags & EXT4_NOCOMPR_FL)
> + xflags |= FS_XFLAG_NOCOMPR;
> + if (iflags & EXT4_ECOMPR_FL)
> + xflags |= FS_XFLAG_ECOMPR;
> + if (iflags & EXT4_INDEX_FL)
> + xflags |= FS_XFLAG_INDEX;
> + if (iflags & EXT4_IMAGIC_FL)
> + xflags |= FS_XFLAG_IMAGIC;
> + if (iflags & EXT4_JOURNAL_DATA_FL)
> + xflags |= FS_XFLAG_JOURNAL_DATA;
> + if (iflags & EXT4_NOTAIL_FL)
> + xflags |= FS_XFLAG_NOTAIL;
> + if (iflags & EXT4_DIRSYNC_FL)
> + xflags |= FS_XFLAG_DIRSYNC;
> + if (iflags & EXT4_TOPDIR_FL)
> + xflags |= FS_XFLAG_TOPDIR;
> + if (iflags & EXT4_HUGE_FILE_FL)
> + xflags |= FS_XFLAG_HUGE_FILE;
> + if (iflags & EXT4_EXTENTS_FL)
> + xflags |= FS_XFLAG_EXTENTS;
> + if (iflags & EXT4_EA_INODE_FL)
> + xflags |= FS_XFLAG_EA_INODE;
> + if (iflags & EXT4_EOFBLOCKS_FL)
> + xflags |= FS_XFLAG_EOFBLOCKS;
> + if (iflags & EXT4_INLINE_DATA_FL)
> + xflags |= FS_XFLAG_INLINE_DATA;
> + if (iflags & EXT4_PROJINHERIT_FL)
> + xflags |= FS_XFLAG_PROJINHERIT;
> + return xflags;
> +}
> +
> +/* Transfer xflags flags to internal */
> +static inline unsigned long ext4_xflags_to_iflags(__u32 xflags)
> +{
> + unsigned long iflags = 0;
> +
> + if (xflags & FS_XFLAG_SECRM)
> + iflags |= EXT4_SECRM_FL;
> + if (xflags & FS_XFLAG_UNRM)
> + iflags |= EXT4_UNRM_FL;
> + if (xflags & FS_XFLAG_COMPR)
> + iflags |= EXT4_COMPR_FL;
> + if (xflags & FS_XFLAG_SYNC)
> + iflags |= EXT4_SYNC_FL;
> + if (xflags & FS_XFLAG_IMMUTABLE)
> + iflags |= EXT4_IMMUTABLE_FL;
> + if (xflags & FS_XFLAG_APPEND)
> + iflags |= EXT4_APPEND_FL;
> + if (xflags & FS_XFLAG_NODUMP)
> + iflags |= EXT4_NODUMP_FL;
> + if (xflags & FS_XFLAG_NOATIME)
> + iflags |= EXT4_NOATIME_FL;
> + if (xflags & FS_XFLAG_COMPRBLK)
> + iflags |= EXT4_COMPRBLK_FL;
> + if (xflags & FS_XFLAG_NOCOMPR)
> + iflags |= EXT4_NOCOMPR_FL;
> + if (xflags & FS_XFLAG_ECOMPR)
> + iflags |= EXT4_ECOMPR_FL;
> + if (xflags & FS_XFLAG_INDEX)
> + iflags |= EXT4_INDEX_FL;
> + if (xflags & FS_XFLAG_IMAGIC)
> + iflags |= EXT4_IMAGIC_FL;
> + if (xflags & FS_XFLAG_JOURNAL_DATA)
> + iflags |= EXT4_JOURNAL_DATA_FL;
> + if (xflags & FS_XFLAG_IMAGIC)
> + iflags |= FS_XFLAG_NOTAIL;
> + if (xflags & FS_XFLAG_DIRSYNC)
> + iflags |= EXT4_DIRSYNC_FL;
> + if (xflags & FS_XFLAG_TOPDIR)
> + iflags |= EXT4_TOPDIR_FL;
> + if (xflags & FS_XFLAG_HUGE_FILE)
> + iflags |= EXT4_HUGE_FILE_FL;
> + if (xflags & FS_XFLAG_EXTENTS)
> + iflags |= EXT4_EXTENTS_FL;
> + if (xflags & FS_XFLAG_EA_INODE)
> + iflags |= EXT4_EA_INODE_FL;
> + if (xflags & FS_XFLAG_EOFBLOCKS)
> + iflags |= EXT4_EOFBLOCKS_FL;
> + if (xflags & FS_XFLAG_INLINE_DATA)
> + iflags |= EXT4_INLINE_DATA_FL;
> + if (xflags & FS_XFLAG_PROJINHERIT)
> + iflags |= EXT4_PROJINHERIT_FL;
> +
> + return iflags;
> +}
> +
> /* Flags that should be inherited by new inodes from their parent. */
> #define EXT4_FL_INHERITED (EXT4_SECRM_FL | EXT4_UNRM_FL | EXT4_COMPR_FL |\
> EXT4_SYNC_FL | EXT4_NODUMP_FL | EXT4_NOATIME_FL |\
> @@ -606,6 +715,8 @@ enum {
> #define EXT4_IOC_RESIZE_FS _IOW('f', 16, __u64)
> #define EXT4_IOC_SWAP_BOOT _IO('f', 17)
> #define EXT4_IOC_PRECACHE_EXTENTS _IO('f', 18)
> +#define EXT4_IOC_FSGETXATTR FS_IOC_FSGETXATTR
> +#define EXT4_IOC_FSSETXATTR FS_IOC_FSSETXATTR
>
> #if defined(__KERNEL__) && defined(CONFIG_COMPAT)
> /*
> diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c
> index f58a0d1..8332476 100644
> --- a/fs/ext4/ioctl.c
> +++ b/fs/ext4/ioctl.c
> @@ -14,6 +14,8 @@
> #include <linux/compat.h>
> #include <linux/mount.h>
> #include <linux/file.h>
> +#include <linux/quotaops.h>
> +#include <linux/quota.h>
> #include <asm/uaccess.h>
> #include "ext4_jbd2.h"
> #include "ext4.h"
> @@ -196,126 +198,220 @@ journal_err_out:
> return err;
> }
>
> -long ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
> +static int ext4_ioctl_setflags(struct file *filp, unsigned int flags)
> {
> struct inode *inode = file_inode(filp);
> - struct super_block *sb = inode->i_sb;
> struct ext4_inode_info *ei = EXT4_I(inode);
> - unsigned int flags;
> + handle_t *handle = NULL;
> + int err, migrate = 0;
> + struct ext4_iloc iloc;
> + unsigned int oldflags, mask, i;
> + unsigned int jflag;
>
> - ext4_debug("cmd = %u, arg = %lu\n", cmd, arg);
> + if (!inode_owner_or_capable(inode))
> + return -EACCES;
>
> - switch (cmd) {
> - case EXT4_IOC_GETFLAGS:
> - ext4_get_inode_flags(ei);
> - flags = ei->i_flags & EXT4_FL_USER_VISIBLE;
> - return put_user(flags, (int __user *) arg);
> - case EXT4_IOC_SETFLAGS: {
> - handle_t *handle = NULL;
> - int err, migrate = 0;
> - struct ext4_iloc iloc;
> - unsigned int oldflags, mask, i;
> - unsigned int jflag;
> + err = mnt_want_write_file(filp);
> + if (err)
> + return err;
>
> - if (!inode_owner_or_capable(inode))
> - return -EACCES;
> + flags = ext4_mask_flags(inode->i_mode, flags);
>
> - if (get_user(flags, (int __user *) arg))
> - return -EFAULT;
> + err = -EPERM;
> + mutex_lock(&inode->i_mutex);
> + /* Is it quota file? Do not allow user to mess with it */
> + if (IS_NOQUOTA(inode))
> + goto flags_out;
>
> - err = mnt_want_write_file(filp);
> - if (err)
> - return err;
> + oldflags = ei->i_flags;
>
> - flags = ext4_mask_flags(inode->i_mode, flags);
> + /* The JOURNAL_DATA flag is modifiable only by root */
> + jflag = flags & EXT4_JOURNAL_DATA_FL;
>
> - err = -EPERM;
> - mutex_lock(&inode->i_mutex);
> - /* Is it quota file? Do not allow user to mess with it */
> - if (IS_NOQUOTA(inode))
> + /*
> + * The IMMUTABLE and APPEND_ONLY flags can only be changed by
> + * the relevant capability.
> + *
> + * This test looks nicer. Thanks to Pauline Middelink
> + */
> + if ((flags ^ oldflags) & (EXT4_APPEND_FL | EXT4_IMMUTABLE_FL)) {
> + if (!capable(CAP_LINUX_IMMUTABLE))
> goto flags_out;
> + }
>
> - oldflags = ei->i_flags;
> -
> - /* The JOURNAL_DATA flag is modifiable only by root */
> - jflag = flags & EXT4_JOURNAL_DATA_FL;
> -
> - /*
> - * The IMMUTABLE and APPEND_ONLY flags can only be changed by
> - * the relevant capability.
> - *
> - * This test looks nicer. Thanks to Pauline Middelink
> - */
> - if ((flags ^ oldflags) & (EXT4_APPEND_FL | EXT4_IMMUTABLE_FL)) {
> - if (!capable(CAP_LINUX_IMMUTABLE))
> - goto flags_out;
> - }
> -
> - /*
> - * The JOURNAL_DATA flag can only be changed by
> - * the relevant capability.
> - */
> - if ((jflag ^ oldflags) & (EXT4_JOURNAL_DATA_FL)) {
> - if (!capable(CAP_SYS_RESOURCE))
> - goto flags_out;
> - }
> - if ((flags ^ oldflags) & EXT4_EXTENTS_FL)
> - migrate = 1;
> -
> + /*
> + * The JOURNAL_DATA flag can only be changed by
> + * the relevant capability.
> + */
> + if ((jflag ^ oldflags) & (EXT4_JOURNAL_DATA_FL)) {
> + if (!capable(CAP_SYS_RESOURCE))
> + goto flags_out;
> + }
> + if ((flags ^ oldflags) & EXT4_EXTENTS_FL)
> + migrate = 1;
> if (flags & EXT4_EOFBLOCKS_FL) {
> - /* we don't support adding EOFBLOCKS flag */
> - if (!(oldflags & EXT4_EOFBLOCKS_FL)) {
> - err = -EOPNOTSUPP;
> - goto flags_out;
> - }
> - } else if (oldflags & EXT4_EOFBLOCKS_FL)
> - ext4_truncate(inode);
> -
> - handle = ext4_journal_start(inode, EXT4_HT_INODE, 1);
> - if (IS_ERR(handle)) {
> - err = PTR_ERR(handle);
> + /* we don't support adding EOFBLOCKS flag */
> + if (!(oldflags & EXT4_EOFBLOCKS_FL)) {
> + err = -EOPNOTSUPP;
> goto flags_out;
> }
> - if (IS_SYNC(inode))
> - ext4_handle_sync(handle);
> - err = ext4_reserve_inode_write(handle, inode, &iloc);
> - if (err)
> - goto flags_err;
> -
> - for (i = 0, mask = 1; i < 32; i++, mask <<= 1) {
> - if (!(mask & EXT4_FL_USER_MODIFIABLE))
> - continue;
> - if (mask & flags)
> - ext4_set_inode_flag(inode, i);
> - else
> - ext4_clear_inode_flag(inode, i);
> - }
> + } else if (oldflags & EXT4_EOFBLOCKS_FL)
> + ext4_truncate(inode);
>
> - ext4_set_inode_flags(inode);
> - inode->i_ctime = ext4_current_time(inode);
> + handle = ext4_journal_start(inode, EXT4_HT_INODE, 1);
> + if (IS_ERR(handle)) {
> + err = PTR_ERR(handle);
> + goto flags_out;
> + }
> + if (IS_SYNC(inode))
> + ext4_handle_sync(handle);
> + err = ext4_reserve_inode_write(handle, inode, &iloc);
> + if (err)
> + goto flags_err;
> +
> + for (i = 0, mask = 1; i < 32; i++, mask <<= 1) {
> + if (!(mask & EXT4_FL_USER_MODIFIABLE))
> + continue;
> + if (mask & flags)
> + ext4_set_inode_flag(inode, i);
> + else
> + ext4_clear_inode_flag(inode, i);
> + }
>
> - err = ext4_mark_iloc_dirty(handle, inode, &iloc);
> -flags_err:
> - ext4_journal_stop(handle);
> - if (err)
> - goto flags_out;
> + ext4_set_inode_flags(inode);
> + inode->i_ctime = ext4_current_time(inode);
>
> - if ((jflag ^ oldflags) & (EXT4_JOURNAL_DATA_FL))
> - err = ext4_change_inode_journal_flag(inode, jflag);
> - if (err)
> - goto flags_out;
> - if (migrate) {
> - if (flags & EXT4_EXTENTS_FL)
> - err = ext4_ext_migrate(inode);
> - else
> - err = ext4_ind_migrate(inode);
> - }
> + err = ext4_mark_iloc_dirty(handle, inode, &iloc);
> +flags_err:
> + ext4_journal_stop(handle);
> + if (err)
> + goto flags_out;
> +
> + if ((jflag ^ oldflags) & (EXT4_JOURNAL_DATA_FL))
> + err = ext4_change_inode_journal_flag(inode, jflag);
> + if (err)
> + goto flags_out;
> + if (migrate) {
> + if (flags & EXT4_EXTENTS_FL)
> + err = ext4_ext_migrate(inode);
> + else
> + err = ext4_ind_migrate(inode);
> + }
>
> flags_out:
> - mutex_unlock(&inode->i_mutex);
> - mnt_drop_write_file(filp);
> + mutex_unlock(&inode->i_mutex);
> + mnt_drop_write_file(filp);
> + return err;
> +}
> +
> +static int ext4_ioctl_setproject(struct file *filp, __u32 projid)
> +{
> + struct inode *inode = file_inode(filp);
> + struct super_block *sb = inode->i_sb;
> + struct ext4_inode_info *ei = EXT4_I(inode);
> + int err;
> + handle_t *handle;
> + kprojid_t kprojid;
> + struct ext4_iloc iloc;
> + struct ext4_inode *raw_inode;
> +
> + struct dquot *transfer_to[EXT4_MAXQUOTAS] = { };
> +
> + /* Make sure caller can change project. */
> + if (!capable(CAP_SYS_ADMIN))
> + return -EACCES;
> +
> + if (projid != EXT4_DEF_PROJID
> + && !EXT4_HAS_RO_COMPAT_FEATURE(sb,
> + EXT4_FEATURE_RO_COMPAT_PROJECT))
> + return -EOPNOTSUPP;
> +
> + if (!EXT4_HAS_RO_COMPAT_FEATURE(sb,
> + EXT4_FEATURE_RO_COMPAT_PROJECT)) {
> + BUG_ON(__kprojid_val(EXT4_I(inode)->i_projid)
> + != EXT4_DEF_PROJID);
> + if (projid != EXT4_DEF_PROJID)
> + return -EOPNOTSUPP;
> + else
> + return 0;
> + }
> +
> + kprojid = make_kprojid(&init_user_ns, (projid_t)projid);
Maybe current_user_ns()?
This code should be user-namespace aware from the beginning.
> +
> + if (projid_eq(kprojid, EXT4_I(inode)->i_projid))
> + return 0;
> +
> + err = mnt_want_write_file(filp);
> + if (err)
> return err;
> +
> + err = -EPERM;
> + mutex_lock(&inode->i_mutex);
> + /* Is it quota file? Do not allow user to mess with it */
> + if (IS_NOQUOTA(inode))
> + goto project_out;
> +
> + dquot_initialize(inode);
> +
> + handle = ext4_journal_start(inode, EXT4_HT_QUOTA,
> + EXT4_QUOTA_INIT_BLOCKS(sb) +
> + EXT4_QUOTA_DEL_BLOCKS(sb) + 3);
> + if (IS_ERR(handle)) {
> + err = PTR_ERR(handle);
> + goto project_out;
> + }
> +
> + err = ext4_reserve_inode_write(handle, inode, &iloc);
> + if (err)
> + goto project_stop;
> +
> + raw_inode = ext4_raw_inode(&iloc);
> + if ((EXT4_INODE_SIZE(sb) <=
> + EXT4_GOOD_OLD_INODE_SIZE) ||
> + (!EXT4_FITS_IN_INODE(raw_inode, ei, i_projid))) {
> + err = -EFBIG;
> + goto project_stop;
> }
> +
> + transfer_to[PRJQUOTA] = dqget(sb, make_kqid_projid(kprojid));
> + if (!transfer_to[PRJQUOTA])
> + goto project_set;
> +
> + err = __dquot_transfer(inode, transfer_to);
> + dqput(transfer_to[PRJQUOTA]);
> + if (err)
> + goto project_stop;
> +
> +project_set:
> + EXT4_I(inode)->i_projid = kprojid;
> + inode->i_ctime = ext4_current_time(inode);
> + err = ext4_mark_iloc_dirty(handle, inode, &iloc);
> +project_stop:
> + ext4_journal_stop(handle);
> +project_out:
> + mutex_unlock(&inode->i_mutex);
> + mnt_drop_write_file(filp);
> + return err;
> +}
> +
> +long ext4_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
> +{
> + struct inode *inode = file_inode(filp);
> + struct super_block *sb = inode->i_sb;
> + struct ext4_inode_info *ei = EXT4_I(inode);
> + unsigned int flags;
> +
> + ext4_debug("cmd = %u, arg = %lu\n", cmd, arg);
> +
> + switch (cmd) {
> + case EXT4_IOC_GETFLAGS:
> + ext4_get_inode_flags(ei);
> + flags = ei->i_flags & EXT4_FL_USER_VISIBLE;
> + return put_user(flags, (int __user *) arg);
> + case EXT4_IOC_SETFLAGS:
> + if (get_user(flags, (int __user *) arg))
> + return -EFAULT;
> + return ext4_ioctl_setflags(filp, flags);
> case EXT4_IOC_GETVERSION:
> case EXT4_IOC_GETVERSION_OLD:
> return put_user(inode->i_generation, (int __user *) arg);
> @@ -615,7 +711,45 @@ resizefs_out:
> }
> case EXT4_IOC_PRECACHE_EXTENTS:
> return ext4_ext_precache(inode);
> + case EXT4_IOC_FSGETXATTR:
> + {
> + struct fsxattr fa;
> +
> + memset(&fa, 0, sizeof(struct fsxattr));
> +
> + ext4_get_inode_flags(ei);
> + fa.fsx_xflags = ext4_iflags_to_xflags(ei->i_flags & EXT4_FL_USER_VISIBLE);
> +
> + if (EXT4_HAS_RO_COMPAT_FEATURE(inode->i_sb,
> + EXT4_FEATURE_RO_COMPAT_PROJECT)) {
> + fa.fsx_projid = (__u32)from_kprojid(&init_user_ns,
> + EXT4_I(inode)->i_projid);
Same here.
> + }
> +
> + if (copy_to_user((struct fsxattr __user *)arg,
> + &fa, sizeof(fa)))
> + return -EFAULT;
> + return 0;
> + }
> + case EXT4_IOC_FSSETXATTR:
> + {
> + struct fsxattr fa;
> + int err;
> +
> + if (copy_from_user(&fa, (struct fsxattr __user *)arg,
> + sizeof(fa)))
> + return -EFAULT;
>
> + err = ext4_ioctl_setflags(filp, ext4_xflags_to_iflags(fa.fsx_xflags));
> + if (err)
> + return err;
> +
> + err = ext4_ioctl_setproject(filp, fa.fsx_projid);
> + if (err)
> + return err;
> +
> + return 0;
> + }
> default:
> return -ENOTTY;
> }
> diff --git a/fs/xfs/xfs_fs.h b/fs/xfs/xfs_fs.h
> index 18dc721..64c7ae6 100644
> --- a/fs/xfs/xfs_fs.h
> +++ b/fs/xfs/xfs_fs.h
> @@ -36,38 +36,25 @@ struct dioattr {
> #endif
>
> /*
> - * Structure for XFS_IOC_FSGETXATTR[A] and XFS_IOC_FSSETXATTR.
> - */
> -#ifndef HAVE_FSXATTR
> -struct fsxattr {
> - __u32 fsx_xflags; /* xflags field value (get/set) */
> - __u32 fsx_extsize; /* extsize field value (get/set)*/
> - __u32 fsx_nextents; /* nextents field value (get) */
> - __u32 fsx_projid; /* project identifier (get/set) */
> - unsigned char fsx_pad[12];
> -};
> -#endif
> -
> -/*
> * Flags for the bs_xflags/fsx_xflags field
> * There should be a one-to-one correspondence between these flags and the
> * XFS_DIFLAG_s.
> */
> -#define XFS_XFLAG_REALTIME 0x00000001 /* data in realtime volume */
> -#define XFS_XFLAG_PREALLOC 0x00000002 /* preallocated file extents */
> -#define XFS_XFLAG_IMMUTABLE 0x00000008 /* file cannot be modified */
> -#define XFS_XFLAG_APPEND 0x00000010 /* all writes append */
> -#define XFS_XFLAG_SYNC 0x00000020 /* all writes synchronous */
> -#define XFS_XFLAG_NOATIME 0x00000040 /* do not update access time */
> -#define XFS_XFLAG_NODUMP 0x00000080 /* do not include in backups */
> -#define XFS_XFLAG_RTINHERIT 0x00000100 /* create with rt bit set */
> -#define XFS_XFLAG_PROJINHERIT 0x00000200 /* create with parents projid */
> -#define XFS_XFLAG_NOSYMLINKS 0x00000400 /* disallow symlink creation */
> -#define XFS_XFLAG_EXTSIZE 0x00000800 /* extent size allocator hint */
> -#define XFS_XFLAG_EXTSZINHERIT 0x00001000 /* inherit inode extent size */
> -#define XFS_XFLAG_NODEFRAG 0x00002000 /* do not defragment */
> -#define XFS_XFLAG_FILESTREAM 0x00004000 /* use filestream allocator */
> -#define XFS_XFLAG_HASATTR 0x80000000 /* no DIFLAG for this */
> +#define XFS_XFLAG_REALTIME FS_XFLAG_REALTIME /* data in realtime volume */
> +#define XFS_XFLAG_PREALLOC FS_XFLAG_PREALLOC /* preallocated file extents */
> +#define XFS_XFLAG_IMMUTABLE FS_XFLAG_IMMUTABLE /* file cannot be modified */
> +#define XFS_XFLAG_APPEND FS_XFLAG_APPEND /* all writes append */
> +#define XFS_XFLAG_SYNC FS_XFLAG_SYNC /* all writes synchronous */
> +#define XFS_XFLAG_NOATIME FS_XFLAG_NOATIME /* do not update access time */
> +#define XFS_XFLAG_NODUMP FS_XFLAG_NODUMP /* do not include in backups */
> +#define XFS_XFLAG_RTINHERIT FS_XFLAG_RTINHERIT /* create with rt bit set */
> +#define XFS_XFLAG_PROJINHERIT FS_XFLAG_PROJINHERIT /* create with parents projid */
> +#define XFS_XFLAG_NOSYMLINKS FS_XFLAG_NOSYMLINKS /* disallow symlink creation */
> +#define XFS_XFLAG_EXTSIZE FS_XFLAG_EXTSIZE /* extent size allocator hint */
> +#define XFS_XFLAG_EXTSZINHERIT FS_XFLAG_EXTSZINHERIT /* inherit inode extent size */
> +#define XFS_XFLAG_NODEFRAG FS_XFLAG_NODEFRAG /* do not defragment */
> +#define XFS_XFLAG_FILESTREAM FS_XFLAG_FILESTREAM /* use filestream allocator */
> +#define XFS_XFLAG_HASATTR FS_XFLAG_HASATTR /* no DIFLAG for this */
>
> /*
> * Structure for XFS_IOC_GETBMAP.
> @@ -503,8 +490,8 @@ typedef struct xfs_swapext
> #define XFS_IOC_ALLOCSP _IOW ('X', 10, struct xfs_flock64)
> #define XFS_IOC_FREESP _IOW ('X', 11, struct xfs_flock64)
> #define XFS_IOC_DIOINFO _IOR ('X', 30, struct dioattr)
> -#define XFS_IOC_FSGETXATTR _IOR ('X', 31, struct fsxattr)
> -#define XFS_IOC_FSSETXATTR _IOW ('X', 32, struct fsxattr)
> +#define XFS_IOC_FSGETXATTR FS_IOC_FSGETXATTR
> +#define XFS_IOC_FSSETXATTR FS_IOC_FSSETXATTR
> #define XFS_IOC_ALLOCSP64 _IOW ('X', 36, struct xfs_flock64)
> #define XFS_IOC_FREESP64 _IOW ('X', 37, struct xfs_flock64)
> #define XFS_IOC_GETBMAP _IOWR('X', 38, struct getbmap)
> diff --git a/include/uapi/linux/fs.h b/include/uapi/linux/fs.h
> index fcbf647..872fed5 100644
> --- a/include/uapi/linux/fs.h
> +++ b/include/uapi/linux/fs.h
> @@ -58,6 +58,62 @@ struct inodes_stat_t {
> long dummy[5]; /* padding for sysctl ABI compatibility */
> };
>
> +/*
> + * Extend attribute flags. These should be or-ed together to figure out what
> + * is valid.
> + */
> +#define FSX_XFLAGS (1 << 0)
> +#define FSX_EXTSIZE (1 << 1)
> +#define FSX_NEXTENTS (1 << 2)
> +#define FSX_PROJID (1 << 3)
> +
> +/*
> + * Structure for FS_IOC_FSGETXATTR and FS_IOC_FSSETXATTR.
> + */
> +struct fsxattr {
> + __u32 fsx_xflags; /* xflags field value (get/set) */
> + __u32 fsx_extsize; /* extsize field value (get/set)*/
> + __u32 fsx_nextents; /* nextents field value (get) */
> + __u32 fsx_projid; /* project identifier (get/set) */
> + unsigned char fsx_pad[12];
> +};
> +
> +/*
> + * Flags for the fsx_xflags field
> + */
> +#define FS_XFLAG_REALTIME 0x00000001 /* data in realtime volume */
> +#define FS_XFLAG_PREALLOC 0x00000002 /* preallocated file extents */
> +#define FS_XFLAG_SECRM 0x00000004 /* secure deletion */
> +#define FS_XFLAG_IMMUTABLE 0x00000008 /* file cannot be modified */
> +#define FS_XFLAG_APPEND 0x00000010 /* all writes append */
> +#define FS_XFLAG_SYNC 0x00000020 /* all writes synchronous */
> +#define FS_XFLAG_NOATIME 0x00000040 /* do not update access time */
> +#define FS_XFLAG_NODUMP 0x00000080 /* do not include in backups */
> +#define FS_XFLAG_RTINHERIT 0x00000100 /* create with rt bit set */
> +#define FS_XFLAG_PROJINHERIT 0x00000200 /* create with parents projid */
> +#define FS_XFLAG_NOSYMLINKS 0x00000400 /* disallow symlink creation */
> +#define FS_XFLAG_EXTSIZE 0x00000800 /* extent size allocator hint */
> +#define FS_XFLAG_EXTSZINHERIT 0x00001000 /* inherit inode extent size */
> +#define FS_XFLAG_NODEFRAG 0x00002000 /* do not defragment */
> +#define FS_XFLAG_FILESTREAM 0x00004000 /* use filestream allocator */
> +#define FS_XFLAG_UNRM 0x00008000 /* undelete */
> +#define FS_XFLAG_COMPR 0x00010000 /* compress file */
> +#define FS_XFLAG_COMPRBLK 0x00020000 /* one or more compressed clusters */
> +#define FS_XFLAG_NOCOMPR 0x00040000 /* don't compress */
> +#define FS_XFLAG_ECOMPR 0x00080000 /* compression error */
> +#define FS_XFLAG_INDEX 0x00100000 /* hash-indexed directory */
> +#define FS_XFLAG_IMAGIC 0x00200000 /* AFS directory */
> +#define FS_XFLAG_JOURNAL_DATA 0x00400000 /* file data should be journaled */
> +#define FS_XFLAG_NOTAIL 0x00800000 /* file tail should not be merged */
> +#define FS_XFLAG_DIRSYNC 0x01000000 /* dirsync behaviour (directories only) */
> +#define FS_XFLAG_TOPDIR 0x02000000 /* top of directory hierarchies*/
> +#define FS_XFLAG_HUGE_FILE 0x04000000 /* set to each huge file */
> +#define FS_XFLAG_EXTENTS 0x08000000 /* inode uses extents */
> +#define FS_XFLAG_EA_INODE 0x10000000 /* inode used for large EA */
> +#define FS_XFLAG_EOFBLOCKS 0x20000000 /* blocks allocated beyond EOF */
> +#define FS_XFLAG_INLINE_DATA 0x40000000 /* inode has inline data. */
> +#define FS_XFLAG_HASATTR 0x80000000 /* no DIFLAG for this */
> +
>
> #define NR_FILE 8192 /* this can well be larger on a larger system */
>
> @@ -163,6 +219,8 @@ struct inodes_stat_t {
> #define FS_IOC_GETVERSION _IOR('v', 1, long)
> #define FS_IOC_SETVERSION _IOW('v', 2, long)
> #define FS_IOC_FIEMAP _IOWR('f', 11, struct fiemap)
> +#define FS_IOC_FSGETXATTR _IOR('f', 31, struct fsxattr)
> +#define FS_IOC_FSSETXATTR _IOW('f', 32, struct fsxattr)
> #define FS_IOC32_GETFLAGS _IOR('f', 1, int)
> #define FS_IOC32_SETFLAGS _IOW('f', 2, int)
> #define FS_IOC32_GETVERSION _IOR('v', 1, int)
>
^ permalink raw reply [flat|nested] 37+ messages in thread
[parent not found: <1418102548-5469-1-git-send-email-lixi-LfVdkaOWEx8@public.gmane.org>]
* [v8 5/5] ext4: cleanup inode flag definitions
[not found] ` <1418102548-5469-1-git-send-email-lixi-LfVdkaOWEx8@public.gmane.org>
@ 2014-12-09 5:22 ` Li Xi
[not found] ` <1418102548-5469-6-git-send-email-lixi-LfVdkaOWEx8@public.gmane.org>
0 siblings, 1 reply; 37+ messages in thread
From: Li Xi @ 2014-12-09 5:22 UTC (permalink / raw)
To: linux-fsdevel-u79uwXL29TY76Z2rM5mHXA,
linux-ext4-u79uwXL29TY76Z2rM5mHXA,
linux-api-u79uwXL29TY76Z2rM5mHXA, tytso-3s7WtUTddSA,
adilger-m1MBpc4rdrD3fQ9qLvQP4Q, jack-AlSwsSmVLrQ,
viro-RmSDqhL/yNMiFSDQTTA3OLVCufUGDwFn,
hch-wEGCiKHe2LqWVfeAwA7xHQ, dmonakhov-GEFAQzZX7r8dnm+yROfE0A
The inode flags defined in uapi/linux/fs.h were migrated from
ext4.h. This patch changes the inode flag definitions in ext4.h
to VFS definitions to make the gaps between them clearer.
Signed-off-by: Li Xi <lixi-LfVdkaOWEx8@public.gmane.org>
---
fs/ext4/ext4.h | 50 +++++++++++++++++++++++++-------------------------
1 files changed, 25 insertions(+), 25 deletions(-)
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h
index 43a2a88..bcc04c0 100644
--- a/fs/ext4/ext4.h
+++ b/fs/ext4/ext4.h
@@ -353,33 +353,33 @@ struct flex_groups {
/*
* Inode flags
*/
-#define EXT4_SECRM_FL 0x00000001 /* Secure deletion */
-#define EXT4_UNRM_FL 0x00000002 /* Undelete */
-#define EXT4_COMPR_FL 0x00000004 /* Compress file */
-#define EXT4_SYNC_FL 0x00000008 /* Synchronous updates */
-#define EXT4_IMMUTABLE_FL 0x00000010 /* Immutable file */
-#define EXT4_APPEND_FL 0x00000020 /* writes to file may only append */
-#define EXT4_NODUMP_FL 0x00000040 /* do not dump file */
-#define EXT4_NOATIME_FL 0x00000080 /* do not update atime */
+#define EXT4_SECRM_FL FS_SECRM_FL /* Secure deletion */
+#define EXT4_UNRM_FL FS_UNRM_FL /* Undelete */
+#define EXT4_COMPR_FL FS_COMPR_FL /* Compress file */
+#define EXT4_SYNC_FL FS_SYNC_FL /* Synchronous updates */
+#define EXT4_IMMUTABLE_FL FS_IMMUTABLE_FL /* Immutable file */
+#define EXT4_APPEND_FL FS_APPEND_FL /* writes to file may only append */
+#define EXT4_NODUMP_FL FS_NODUMP_FL /* do not dump file */
+#define EXT4_NOATIME_FL FS_NOATIME_FL /* do not update atime */
/* Reserved for compression usage... */
-#define EXT4_DIRTY_FL 0x00000100
-#define EXT4_COMPRBLK_FL 0x00000200 /* One or more compressed clusters */
-#define EXT4_NOCOMPR_FL 0x00000400 /* Don't compress */
-#define EXT4_ECOMPR_FL 0x00000800 /* Compression error */
+#define EXT4_DIRTY_FL FS_DIRTY_FL
+#define EXT4_COMPRBLK_FL FS_COMPRBLK_FL /* One or more compressed clusters */
+#define EXT4_NOCOMPR_FL FS_NOCOMP_FL /* Don't compress */
+#define EXT4_ECOMPR_FL FS_ECOMPR_FL /* Compression error */
/* End compression flags --- maybe not all used */
-#define EXT4_INDEX_FL 0x00001000 /* hash-indexed directory */
-#define EXT4_IMAGIC_FL 0x00002000 /* AFS directory */
-#define EXT4_JOURNAL_DATA_FL 0x00004000 /* file data should be journaled */
-#define EXT4_NOTAIL_FL 0x00008000 /* file tail should not be merged */
-#define EXT4_DIRSYNC_FL 0x00010000 /* dirsync behaviour (directories only) */
-#define EXT4_TOPDIR_FL 0x00020000 /* Top of directory hierarchies*/
-#define EXT4_HUGE_FILE_FL 0x00040000 /* Set to each huge file */
-#define EXT4_EXTENTS_FL 0x00080000 /* Inode uses extents */
-#define EXT4_EA_INODE_FL 0x00200000 /* Inode used for large EA */
-#define EXT4_EOFBLOCKS_FL 0x00400000 /* Blocks allocated beyond EOF */
-#define EXT4_INLINE_DATA_FL 0x10000000 /* Inode has inline data. */
-#define EXT4_PROJINHERIT_FL FS_PROJINHERIT_FL /* Create with parents projid */
-#define EXT4_RESERVED_FL 0x80000000 /* reserved for ext4 lib */
+#define EXT4_INDEX_FL FS_INDEX_FL /* hash-indexed directory */
+#define EXT4_IMAGIC_FL FS_IMAGIC_FL /* AFS directory */
+#define EXT4_JOURNAL_DATA_FL FS_JOURNAL_DATA_FL /* file data should be journaled */
+#define EXT4_NOTAIL_FL FS_NOTAIL_FL /* file tail should not be merged */
+#define EXT4_DIRSYNC_FL FS_DIRSYNC_FL /* dirsync behaviour (directories only) */
+#define EXT4_TOPDIR_FL FS_TOPDIR_FL /* Top of directory hierarchies*/
+#define EXT4_HUGE_FILE_FL 0x00040000 /* Set to each huge file */
+#define EXT4_EXTENTS_FL FS_EXTENT_FL /* Inode uses extents */
+#define EXT4_EA_INODE_FL 0x00200000 /* Inode used for large EA */
+#define EXT4_EOFBLOCKS_FL 0x00400000 /* Blocks allocated beyond EOF */
+#define EXT4_INLINE_DATA_FL 0x10000000 /* Inode has inline data. */
+#define EXT4_PROJINHERIT_FL FS_PROJINHERIT_FL /* Create with parents projid */
+#define EXT4_RESERVED_FL FS_RESERVED_FL /* reserved for ext4 lib */
#define EXT4_FL_USER_VISIBLE 0x204BDFFF /* User visible flags */
#define EXT4_FL_USER_MODIFIABLE 0x204380FF /* User modifiable flags */
--
1.7.1
^ permalink raw reply related [flat|nested] 37+ messages in thread
* Re: [v8 0/5] ext4: add project quota support
2014-12-09 5:22 [v8 0/5] ext4: add project quota support Li Xi
` (4 preceding siblings ...)
[not found] ` <1418102548-5469-1-git-send-email-lixi-LfVdkaOWEx8@public.gmane.org>
@ 2015-01-26 18:46 ` jon ernst
2015-02-13 2:00 ` Li Xi
5 siblings, 1 reply; 37+ messages in thread
From: jon ernst @ 2015-01-26 18:46 UTC (permalink / raw)
To: Li Xi; +Cc: linux-ext4@vger.kernel.org List
Xi,
Just a question, do you have any test scripts or xfstest cases for
this patchset?
Thanks,
Jon
On Tue, Dec 9, 2014 at 12:22 AM, Li Xi <pkuelelixi@gmail.com> wrote:
> The following patches propose an implementation of project quota
> support for ext4. A project is an aggregate of unrelated inodes
> which might scatter in different directories. Inodes that belong
> to the same project possess an identical identification i.e.
> 'project ID', just like every inode has its user/group
> identification. The following patches add project quota as
> supplement to the former uer/group quota types.
>
> The semantics of ext4 project quota is consistent with XFS. Each
> directory can have EXT4_INODE_PROJINHERIT flag set. When the
> EXT4_INODE_PROJINHERIT flag of a parent directory is not set, a
> newly created inode under that directory will have a default project
> ID (i.e. 0). And its EXT4_INODE_PROJINHERIT flag is not set either.
> When this flag is set on a directory, following rules will be kept:
>
> 1) The newly created inode under that directory will inherit both
> the EXT4_INODE_PROJINHERIT flag and the project ID from its parent
> directory.
>
> 2) Hard-linking a inode with different project ID into that directory
> will fail with errno EXDEV.
>
> 3) Renaming a inode with different project ID into that directory
> will fail with errno EXDEV. However, 'mv' command will detect this
> failure and copy the renamed inode to a new inode in the directory.
> Thus, this new inode will inherit both the project ID and
> EXT4_INODE_PROJINHERIT flag.
>
> 4) If the project quota of that ID is being enforced, statfs() on
> that directory will take the quotas as another upper limits along
> with the capacity of the file system, i.e. the total block/inode
> number will be the minimum of the quota limits and file system
> capacity.
>
> Changelog:
> * v8 <- v7:
> - Rebase to newest dev branch of ext4 repository (3.18.0_rc3).
> * v7 <- v6:
> - Map ext4 inode flags to xflags of struct fsxattr;
> - Add patch to cleanup ext4 inode flag definitions.
> * v6 <- v5:
> - Add project ID check for cross rename;
> - Remove patch of EXT4_IOC_GETPROJECT/EXT4_IOC_SETPROJECT ioctl
> * v5 <- v4:
> - Check project feature when set/get project ID;
> - Do not check project feature for project quota;
> - Add support of FS_IOC_FSSETXATTR/FS_IOC_FSGETXATTR.
> * v4 <- v3:
> - Do not check project feature when set/get project ID;
> - Use EXT4_MAXQUOTAS instead of MAXQUOTAS in ext4 patches;
> - Remove unnecessary change of fs/quota/dquot.c;
> - Remove CONFIG_QUOTA_PROJECT.
> * v3 <- v2:
> - Add EXT4_INODE_PROJINHERIT semantics.
> * v2 <- v1:
> - Add ioctl interface for setting/getting project;
> - Add EXT4_FEATURE_RO_COMPAT_PROJECT;
> - Add get_projid() method in struct dquot_operations;
> - Add error check of ext4_inode_projid_set/get().
>
> v7: http://www.spinics.net/lists/linux-fsdevel/msg80404.html
> v6: http://www.spinics.net/lists/linux-fsdevel/msg80022.html
> v5: http://www.spinics.net/lists/linux-api/msg04840.html
> v4: http://lwn.net/Articles/612972/
> v3: http://www.spinics.net/lists/linux-ext4/msg45184.html
> v2: http://www.spinics.net/lists/linux-ext4/msg44695.html
> v1: http://article.gmane.org/gmane.comp.file-systems.ext4/45153
>
> Any comments or feedbacks are appreciated.
>
> Regards,
> - Li Xi
>
> Li Xi (5):
> vfs: adds general codes to enforces project quota limits
> ext4: adds project ID support
> ext4: adds project quota support
> ext4: adds FS_IOC_FSSETXATTR/FS_IOC_FSGETXATTR interface support
> ext4: cleanup inode flag definitions
>
> fs/ext4/ext4.h | 190 +++++++++++++++++++++----
> fs/ext4/ialloc.c | 6 +
> fs/ext4/inode.c | 29 ++++
> fs/ext4/ioctl.c | 330 +++++++++++++++++++++++++++++++-------------
> fs/ext4/namei.c | 17 +++
> fs/ext4/super.c | 96 +++++++++++--
> fs/quota/dquot.c | 35 ++++-
> fs/quota/quota.c | 8 +-
> fs/quota/quotaio_v2.h | 6 +-
> fs/xfs/xfs_fs.h | 47 +++----
> include/linux/quota.h | 2 +
> include/uapi/linux/fs.h | 59 ++++++++
> include/uapi/linux/quota.h | 6 +-
> 13 files changed, 650 insertions(+), 181 deletions(-)
>
> --
> To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
> the body of a message to majordomo@vger.kernel.org
> More majordomo info at http://vger.kernel.org/majordomo-info.html
^ permalink raw reply [flat|nested] 37+ messages in thread* Re: [v8 0/5] ext4: add project quota support
2015-01-26 18:46 ` [v8 0/5] ext4: add project quota support jon ernst
@ 2015-02-13 2:00 ` Li Xi
0 siblings, 0 replies; 37+ messages in thread
From: Li Xi @ 2015-02-13 2:00 UTC (permalink / raw)
To: jon ernst; +Cc: linux-ext4@vger.kernel.org List
Hi Jon,
Yeah, I've written a script to test the project quota which has about
a dozen of test suites. However, sorry, I didn't add xfstest cases for
it. And we need to apply a series of e2fsprogs patches to enable
project quota feature though.
Thanks,
Li Xi
On Tue, Jan 27, 2015 at 2:46 AM, jon ernst <jonernst07@gmail.com> wrote:
> Xi,
> Just a question, do you have any test scripts or xfstest cases for
> this patchset?
>
> Thanks,
> Jon
>
> On Tue, Dec 9, 2014 at 12:22 AM, Li Xi <pkuelelixi@gmail.com> wrote:
>> The following patches propose an implementation of project quota
>> support for ext4. A project is an aggregate of unrelated inodes
>> which might scatter in different directories. Inodes that belong
>> to the same project possess an identical identification i.e.
>> 'project ID', just like every inode has its user/group
>> identification. The following patches add project quota as
>> supplement to the former uer/group quota types.
>>
>> The semantics of ext4 project quota is consistent with XFS. Each
>> directory can have EXT4_INODE_PROJINHERIT flag set. When the
>> EXT4_INODE_PROJINHERIT flag of a parent directory is not set, a
>> newly created inode under that directory will have a default project
>> ID (i.e. 0). And its EXT4_INODE_PROJINHERIT flag is not set either.
>> When this flag is set on a directory, following rules will be kept:
>>
>> 1) The newly created inode under that directory will inherit both
>> the EXT4_INODE_PROJINHERIT flag and the project ID from its parent
>> directory.
>>
>> 2) Hard-linking a inode with different project ID into that directory
>> will fail with errno EXDEV.
>>
>> 3) Renaming a inode with different project ID into that directory
>> will fail with errno EXDEV. However, 'mv' command will detect this
>> failure and copy the renamed inode to a new inode in the directory.
>> Thus, this new inode will inherit both the project ID and
>> EXT4_INODE_PROJINHERIT flag.
>>
>> 4) If the project quota of that ID is being enforced, statfs() on
>> that directory will take the quotas as another upper limits along
>> with the capacity of the file system, i.e. the total block/inode
>> number will be the minimum of the quota limits and file system
>> capacity.
>>
>> Changelog:
>> * v8 <- v7:
>> - Rebase to newest dev branch of ext4 repository (3.18.0_rc3).
>> * v7 <- v6:
>> - Map ext4 inode flags to xflags of struct fsxattr;
>> - Add patch to cleanup ext4 inode flag definitions.
>> * v6 <- v5:
>> - Add project ID check for cross rename;
>> - Remove patch of EXT4_IOC_GETPROJECT/EXT4_IOC_SETPROJECT ioctl
>> * v5 <- v4:
>> - Check project feature when set/get project ID;
>> - Do not check project feature for project quota;
>> - Add support of FS_IOC_FSSETXATTR/FS_IOC_FSGETXATTR.
>> * v4 <- v3:
>> - Do not check project feature when set/get project ID;
>> - Use EXT4_MAXQUOTAS instead of MAXQUOTAS in ext4 patches;
>> - Remove unnecessary change of fs/quota/dquot.c;
>> - Remove CONFIG_QUOTA_PROJECT.
>> * v3 <- v2:
>> - Add EXT4_INODE_PROJINHERIT semantics.
>> * v2 <- v1:
>> - Add ioctl interface for setting/getting project;
>> - Add EXT4_FEATURE_RO_COMPAT_PROJECT;
>> - Add get_projid() method in struct dquot_operations;
>> - Add error check of ext4_inode_projid_set/get().
>>
>> v7: http://www.spinics.net/lists/linux-fsdevel/msg80404.html
>> v6: http://www.spinics.net/lists/linux-fsdevel/msg80022.html
>> v5: http://www.spinics.net/lists/linux-api/msg04840.html
>> v4: http://lwn.net/Articles/612972/
>> v3: http://www.spinics.net/lists/linux-ext4/msg45184.html
>> v2: http://www.spinics.net/lists/linux-ext4/msg44695.html
>> v1: http://article.gmane.org/gmane.comp.file-systems.ext4/45153
>>
>> Any comments or feedbacks are appreciated.
>>
>> Regards,
>> - Li Xi
>>
>> Li Xi (5):
>> vfs: adds general codes to enforces project quota limits
>> ext4: adds project ID support
>> ext4: adds project quota support
>> ext4: adds FS_IOC_FSSETXATTR/FS_IOC_FSGETXATTR interface support
>> ext4: cleanup inode flag definitions
>>
>> fs/ext4/ext4.h | 190 +++++++++++++++++++++----
>> fs/ext4/ialloc.c | 6 +
>> fs/ext4/inode.c | 29 ++++
>> fs/ext4/ioctl.c | 330 +++++++++++++++++++++++++++++++-------------
>> fs/ext4/namei.c | 17 +++
>> fs/ext4/super.c | 96 +++++++++++--
>> fs/quota/dquot.c | 35 ++++-
>> fs/quota/quota.c | 8 +-
>> fs/quota/quotaio_v2.h | 6 +-
>> fs/xfs/xfs_fs.h | 47 +++----
>> include/linux/quota.h | 2 +
>> include/uapi/linux/fs.h | 59 ++++++++
>> include/uapi/linux/quota.h | 6 +-
>> 13 files changed, 650 insertions(+), 181 deletions(-)
>>
>> --
>> To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
>> the body of a message to majordomo@vger.kernel.org
>> More majordomo info at http://vger.kernel.org/majordomo-info.html
^ permalink raw reply [flat|nested] 37+ messages in thread