From: Andreas Gruenbacher <agruenba@redhat.com>
To: Alexander Viro <viro@zeniv.linux.org.uk>,
"Theodore Ts'o" <tytso@mit.edu>,
Andreas Dilger <adilger.kernel@dilger.ca>,
"J. Bruce Fields" <bfields@fieldses.org>,
Jeff Layton <jlayton@poochiereds.net>,
Trond Myklebust <trond.myklebust@primarydata.com>,
Anna Schumaker <anna.schumaker@netapp.com>,
Dave Chinner <david@fromorbit.com>,
linux-ext4@vger.kernel.org, xfs@oss.sgi.com,
linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
linux-nfs@vger.kernel.org, linux-cifs@vger.kernel.org,
linux-api@vger.kernel.org
Cc: Andreas Gruenbacher <agruenba@redhat.com>
Subject: [PATCH v13 01/51] vfs: Add IS_ACL() and IS_RICHACL() tests
Date: Tue, 3 Nov 2015 16:16:37 +0100 [thread overview]
Message-ID: <1446563847-14005-2-git-send-email-agruenba@redhat.com> (raw)
In-Reply-To: <1446563847-14005-1-git-send-email-agruenba@redhat.com>
The vfs does not apply the umask for file systems that support acls. The
test used for this used to be called IS_POSIXACL(). Switch to a new
IS_ACL() test to check for either posix acls or richacls instead. Add a new
MS_RICHACL flag and IS_RICHACL() test for richacls alone. The IS_POSIXACL()
test is still needed by nfsd.
Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>
Reviewed-by: J. Bruce Fields <bfields@redhat.com>
---
fs/Kconfig | 3 +++
fs/namei.c | 8 ++++----
include/linux/fs.h | 12 ++++++++++++
include/uapi/linux/fs.h | 3 ++-
4 files changed, 21 insertions(+), 5 deletions(-)
diff --git a/fs/Kconfig b/fs/Kconfig
index da3f32f..bff2879 100644
--- a/fs/Kconfig
+++ b/fs/Kconfig
@@ -56,6 +56,9 @@ endif # BLOCK
config FS_POSIX_ACL
def_bool n
+config FS_RICHACL
+ def_bool n
+
config EXPORTFS
tristate
diff --git a/fs/namei.c b/fs/namei.c
index 33e9495..224ecf1 100644
--- a/fs/namei.c
+++ b/fs/namei.c
@@ -2798,7 +2798,7 @@ static int atomic_open(struct nameidata *nd, struct dentry *dentry,
}
mode = op->mode;
- if ((open_flag & O_CREAT) && !IS_POSIXACL(dir))
+ if ((open_flag & O_CREAT) && !IS_ACL(dir))
mode &= ~current_umask();
excl = (open_flag & (O_EXCL | O_CREAT)) == (O_EXCL | O_CREAT);
@@ -2982,7 +2982,7 @@ static int lookup_open(struct nameidata *nd, struct path *path,
/* Negative dentry, just create the file */
if (!dentry->d_inode && (op->open_flag & O_CREAT)) {
umode_t mode = op->mode;
- if (!IS_POSIXACL(dir->d_inode))
+ if (!IS_ACL(dir->d_inode))
mode &= ~current_umask();
/*
* This write is needed to ensure that a
@@ -3553,7 +3553,7 @@ retry:
if (IS_ERR(dentry))
return PTR_ERR(dentry);
- if (!IS_POSIXACL(path.dentry->d_inode))
+ if (!IS_ACL(path.dentry->d_inode))
mode &= ~current_umask();
error = security_path_mknod(&path, dentry, mode, dev);
if (error)
@@ -3622,7 +3622,7 @@ retry:
if (IS_ERR(dentry))
return PTR_ERR(dentry);
- if (!IS_POSIXACL(path.dentry->d_inode))
+ if (!IS_ACL(path.dentry->d_inode))
mode &= ~current_umask();
error = security_path_mkdir(&path, dentry, mode);
if (!error)
diff --git a/include/linux/fs.h b/include/linux/fs.h
index 72d8a84..4efa435 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1781,6 +1781,12 @@ struct super_operations {
#define IS_IMMUTABLE(inode) ((inode)->i_flags & S_IMMUTABLE)
#define IS_POSIXACL(inode) __IS_FLG(inode, MS_POSIXACL)
+#ifdef CONFIG_FS_RICHACL
+#define IS_RICHACL(inode) __IS_FLG(inode, MS_RICHACL)
+#else
+#define IS_RICHACL(inode) 0
+#endif
+
#define IS_DEADDIR(inode) ((inode)->i_flags & S_DEAD)
#define IS_NOCMTIME(inode) ((inode)->i_flags & S_NOCMTIME)
#define IS_SWAPFILE(inode) ((inode)->i_flags & S_SWAPFILE)
@@ -1794,6 +1800,12 @@ struct super_operations {
(inode)->i_rdev == WHITEOUT_DEV)
/*
+ * IS_ACL() tells the VFS to not apply the umask
+ * and use check_acl for acl permission checks when defined.
+ */
+#define IS_ACL(inode) __IS_FLG(inode, MS_POSIXACL | MS_RICHACL)
+
+/*
* Inode state bits. Protected by inode->i_lock
*
* Three bits determine the dirty state of the inode, I_DIRTY_SYNC,
diff --git a/include/uapi/linux/fs.h b/include/uapi/linux/fs.h
index 9b964a5..6ac6bc9 100644
--- a/include/uapi/linux/fs.h
+++ b/include/uapi/linux/fs.h
@@ -81,7 +81,7 @@ struct inodes_stat_t {
#define MS_VERBOSE 32768 /* War is peace. Verbosity is silence.
MS_VERBOSE is deprecated. */
#define MS_SILENT 32768
-#define MS_POSIXACL (1<<16) /* VFS does not apply the umask */
+#define MS_POSIXACL (1<<16) /* Supports POSIX ACLs */
#define MS_UNBINDABLE (1<<17) /* change to unbindable */
#define MS_PRIVATE (1<<18) /* change to private */
#define MS_SLAVE (1<<19) /* change to slave */
@@ -91,6 +91,7 @@ struct inodes_stat_t {
#define MS_I_VERSION (1<<23) /* Update inode I_version field */
#define MS_STRICTATIME (1<<24) /* Always perform atime updates */
#define MS_LAZYTIME (1<<25) /* Update the on-disk [acm]times lazily */
+#define MS_RICHACL (1<<26) /* Supports richacls */
/* These sb flags are internal to the kernel */
#define MS_NOSEC (1<<28)
--
2.5.0
next prev parent reply other threads:[~2015-11-03 15:17 UTC|newest]
Thread overview: 69+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-11-03 15:16 [PATCH v13 00/51] Richacls Andreas Gruenbacher
2015-11-03 15:16 ` Andreas Gruenbacher [this message]
2015-11-03 15:16 ` [PATCH v13 02/51] vfs: Add MAY_CREATE_FILE and MAY_CREATE_DIR permission flags Andreas Gruenbacher
2015-11-04 2:33 ` Andreas Dilger
2015-11-04 3:02 ` Andreas Gruenbacher
2015-11-03 15:16 ` [PATCH v13 03/51] vfs: Add MAY_DELETE_SELF and MAY_DELETE_CHILD " Andreas Gruenbacher
2015-11-03 15:16 ` [PATCH v13 04/51] vfs: Make the inode passed to inode_change_ok non-const Andreas Gruenbacher
2015-11-03 15:16 ` [PATCH v13 05/51] vfs: Add permission flags for setting file attributes Andreas Gruenbacher
2015-11-03 15:16 ` [PATCH v13 06/51] richacl: In-memory representation and helper functions Andreas Gruenbacher
2015-11-03 15:16 ` [PATCH v13 07/51] richacl: Permission mapping functions Andreas Gruenbacher
2015-11-03 15:16 ` [PATCH v13 08/51] richacl: Compute maximum file masks from an acl Andreas Gruenbacher
2015-11-03 15:16 ` [PATCH v13 09/51] richacl: Permission check algorithm Andreas Gruenbacher
2015-11-03 15:16 ` [PATCH v13 10/51] vfs: Cache base_acl objects in inodes Andreas Gruenbacher
2015-11-03 22:29 ` Andreas Dilger
2015-11-04 21:54 ` Andreas Gruenbacher
2015-11-03 15:16 ` [PATCH v13 11/51] vfs: Add get_richacl and set_richacl inode operations Andreas Gruenbacher
2015-11-03 15:16 ` [PATCH v13 12/51] vfs: Cache richacl in struct inode Andreas Gruenbacher
2015-11-04 2:03 ` Andreas Dilger
2015-11-04 22:10 ` Andreas Gruenbacher
2015-11-03 15:16 ` [PATCH v13 13/51] richacl: Update the file masks in chmod() Andreas Gruenbacher
2015-11-03 15:16 ` [PATCH v13 14/51] richacl: Check if an acl is equivalent to a file mode Andreas Gruenbacher
2015-11-03 15:16 ` [PATCH v13 15/51] richacl: Create-time inheritance Andreas Gruenbacher
2015-11-03 15:16 ` [PATCH v13 16/51] richacl: Automatic Inheritance Andreas Gruenbacher
2015-11-03 15:16 ` [PATCH v13 17/51] richacl: xattr mapping functions Andreas Gruenbacher
2015-11-03 15:16 ` [PATCH v13 18/51] richacl: Add richacl xattr handler Andreas Gruenbacher
2015-11-03 15:16 ` [PATCH v13 19/51] vfs: Add richacl permission checking Andreas Gruenbacher
2015-11-03 15:16 ` [PATCH v13 20/51] ext4: Add richacl support Andreas Gruenbacher
2015-11-04 2:13 ` Andreas Dilger
2015-11-04 2:19 ` Andreas Gruenbacher
2015-11-03 15:16 ` [PATCH v13 21/51] ext4: Add richacl feature flag Andreas Gruenbacher
2015-11-04 2:18 ` Andreas Dilger
2015-11-04 2:28 ` Andreas Gruenbacher
2015-11-04 2:43 ` Andreas Gruenbacher
2015-11-03 15:16 ` [PATCH v13 22/51] xfs: Fix error path in xfs_get_acl Andreas Gruenbacher
2015-11-03 15:16 ` [PATCH v13 23/51] xfs: Make xfs_set_mode non-static Andreas Gruenbacher
2015-11-03 15:17 ` [PATCH v13 24/51] xfs: Change how listxattr generates synthetic attributes Andreas Gruenbacher
2015-11-03 15:17 ` [PATCH v13 25/51] xfs: Add richacl support Andreas Gruenbacher
2015-11-03 15:17 ` [PATCH v13 26/51] xfs: Plug memory leak in xfs_attrmulti_attr_set Andreas Gruenbacher
2015-11-03 15:17 ` [PATCH v13 27/51] xfs: Fix richacl access by ioctl Andreas Gruenbacher
2015-11-03 15:17 ` [PATCH v13 28/51] richacl: acl editing helper functions Andreas Gruenbacher
2015-11-03 15:17 ` [PATCH v13 29/51] richacl: Move everyone@ aces down the acl Andreas Gruenbacher
2015-11-03 15:17 ` [PATCH v13 30/51] richacl: Propagate everyone@ permissions to other aces Andreas Gruenbacher
2015-11-03 15:17 ` [PATCH v13 31/51] richacl: Set the owner permissions to the owner mask Andreas Gruenbacher
2015-11-03 15:17 ` [PATCH v13 32/51] richacl: Set the other permissions to the other mask Andreas Gruenbacher
2015-11-03 15:17 ` [PATCH v13 33/51] richacl: Isolate the owner and group classes Andreas Gruenbacher
2015-11-03 15:17 ` [PATCH v13 34/51] richacl: Apply the file masks to a richacl Andreas Gruenbacher
2015-11-03 15:17 ` [PATCH v13 35/51] richacl: Create richacl from mode values Andreas Gruenbacher
2015-11-03 15:17 ` [PATCH v13 36/51] nfsd: Keep list of acls to dispose of in compoundargs Andreas Gruenbacher
2015-11-03 15:17 ` [PATCH v13 37/51] nfsd: Use richacls as internal acl representation Andreas Gruenbacher
2015-11-03 15:17 ` [PATCH v13 38/51] nfsd: Add richacl support Andreas Gruenbacher
2015-11-03 15:17 ` [PATCH v13 39/51] nfsd: Add support for the v4.1 dacl attribute Andreas Gruenbacher
2015-11-03 15:17 ` [PATCH v13 40/51] nfsd: Add support for the MAY_CREATE_{FILE,DIR} permissions Andreas Gruenbacher
2015-11-03 15:17 ` [PATCH v13 41/51] richacl: Add support for unmapped identifiers Andreas Gruenbacher
2015-11-03 15:17 ` [PATCH v13 42/51] nfsd: Add support for unmapped richace identifiers Andreas Gruenbacher
2015-11-03 15:17 ` [PATCH v13 43/51] ext4: Don't allow unmapped identifiers in richacls Andreas Gruenbacher
2015-11-04 2:20 ` Andreas Dilger
2015-11-03 15:17 ` [PATCH v13 44/51] xfs: " Andreas Gruenbacher
2015-11-03 15:17 ` [PATCH v13 45/51] sunrpc: Allow to demand-allocate pages to encode into Andreas Gruenbacher
2015-11-03 16:25 ` Trond Myklebust
2015-11-05 11:07 ` Andreas Gruenbacher
2015-11-05 15:57 ` Trond Myklebust
2015-11-08 22:19 ` Andreas Gruenbacher
2015-11-03 15:17 ` [PATCH v13 46/51] sunrpc: Add xdr_init_encode_pages Andreas Gruenbacher
2015-11-03 15:17 ` [PATCH v13 47/51] nfs: Fix GETATTR bitmap verification Andreas Gruenbacher
2015-11-03 16:30 ` Trond Myklebust
2015-11-03 15:17 ` [PATCH v13 48/51] nfs: Remove unused xdr page offsets in getacl/setacl arguments Andreas Gruenbacher
2015-11-03 15:17 ` [PATCH v13 49/51] nfs: Distinguish missing users and groups from nobody Andreas Gruenbacher
2015-11-03 15:17 ` [PATCH v13 50/51] nfs: Add richacl support Andreas Gruenbacher
2015-11-03 15:17 ` [PATCH v13 51/51] nfs: Add support for the v4.1 dacl attribute Andreas Gruenbacher
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