From: Eric Biggers <ebiggers@kernel.org>
To: "Darrick J . Wong" <darrick.wong@oracle.com>
Cc: linux-fsdevel@vger.kernel.org, Jaegeuk Kim <jaegeuk@kernel.org>,
linux-f2fs-devel@lists.sourceforge.net
Subject: [f2fs-dev] [PATCH 2/3] f2fs: use generic checking function for FS_IOC_FSSETXATTR
Date: Mon, 1 Jul 2019 13:26:29 -0700 [thread overview]
Message-ID: <20190701202630.43776-3-ebiggers@kernel.org> (raw)
In-Reply-To: <20190701202630.43776-1-ebiggers@kernel.org>
From: Eric Biggers <ebiggers@google.com>
Make the f2fs implementation of FS_IOC_FSSETXATTR use the new VFS helper
function vfs_ioc_fssetxattr_check(), and remove the project quota check
since it's now done by the helper function.
This is based on a patch from Darrick Wong, but reworked to apply after
commit 360985573b55 ("f2fs: separate f2fs i_flags from fs_flags and ext4
i_flags").
Originally-from: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Eric Biggers <ebiggers@google.com>
---
fs/f2fs/file.c | 45 ++++++++++++++-------------------------------
1 file changed, 14 insertions(+), 31 deletions(-)
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index b5b941e6448657..ae1a54ecc9fccc 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -2857,52 +2857,32 @@ static inline u32 f2fs_xflags_to_iflags(u32 xflags)
return iflags;
}
-static int f2fs_ioc_fsgetxattr(struct file *filp, unsigned long arg)
+static void f2fs_fill_fsxattr(struct inode *inode, struct fsxattr *fa)
{
- struct inode *inode = file_inode(filp);
struct f2fs_inode_info *fi = F2FS_I(inode);
- struct fsxattr fa;
- memset(&fa, 0, sizeof(struct fsxattr));
- fa.fsx_xflags = f2fs_iflags_to_xflags(fi->i_flags);
+ simple_fill_fsxattr(fa, f2fs_iflags_to_xflags(fi->i_flags));
if (f2fs_sb_has_project_quota(F2FS_I_SB(inode)))
- fa.fsx_projid = (__u32)from_kprojid(&init_user_ns,
- fi->i_projid);
-
- if (copy_to_user((struct fsxattr __user *)arg, &fa, sizeof(fa)))
- return -EFAULT;
- return 0;
+ fa->fsx_projid = from_kprojid(&init_user_ns, fi->i_projid);
}
-static int f2fs_ioctl_check_project(struct inode *inode, struct fsxattr *fa)
+static int f2fs_ioc_fsgetxattr(struct file *filp, unsigned long arg)
{
- /*
- * Project Quota ID state is only allowed to change from within the init
- * namespace. Enforce that restriction only if we are trying to change
- * the quota ID state. Everything else is allowed in user namespaces.
- */
- if (current_user_ns() == &init_user_ns)
- return 0;
-
- if (__kprojid_val(F2FS_I(inode)->i_projid) != fa->fsx_projid)
- return -EINVAL;
+ struct inode *inode = file_inode(filp);
+ struct fsxattr fa;
- if (F2FS_I(inode)->i_flags & F2FS_PROJINHERIT_FL) {
- if (!(fa->fsx_xflags & FS_XFLAG_PROJINHERIT))
- return -EINVAL;
- } else {
- if (fa->fsx_xflags & FS_XFLAG_PROJINHERIT)
- return -EINVAL;
- }
+ f2fs_fill_fsxattr(inode, &fa);
+ if (copy_to_user((struct fsxattr __user *)arg, &fa, sizeof(fa)))
+ return -EFAULT;
return 0;
}
static int f2fs_ioc_fssetxattr(struct file *filp, unsigned long arg)
{
struct inode *inode = file_inode(filp);
- struct fsxattr fa;
+ struct fsxattr fa, old_fa;
u32 iflags;
int err;
@@ -2925,9 +2905,12 @@ static int f2fs_ioc_fssetxattr(struct file *filp, unsigned long arg)
return err;
inode_lock(inode);
- err = f2fs_ioctl_check_project(inode, &fa);
+
+ f2fs_fill_fsxattr(inode, &old_fa);
+ err = vfs_ioc_fssetxattr_check(inode, &old_fa, &fa);
if (err)
goto out;
+
err = f2fs_setflags_common(inode, iflags,
f2fs_xflags_to_iflags(F2FS_SUPPORTED_XFLAGS));
if (err)
--
2.22.0.410.gd8fdbe21b5-goog
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next prev parent reply other threads:[~2019-07-01 20:26 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-07-01 20:26 [f2fs-dev] [PATCH 0/3] f2fs: use generic helpers for FS_IOC_{SETFLAGS, FSSETXATTR} Eric Biggers
2019-07-01 20:26 ` [f2fs-dev] [PATCH 1/3] f2fs: use generic checking and prep function for FS_IOC_SETFLAGS Eric Biggers
2019-07-03 1:58 ` Chao Yu
2019-07-07 20:41 ` Darrick J. Wong
2019-07-01 20:26 ` Eric Biggers [this message]
2019-07-03 1:58 ` [f2fs-dev] [PATCH 2/3] f2fs: use generic checking function for FS_IOC_FSSETXATTR Chao Yu
2019-07-07 20:41 ` Darrick J. Wong
2019-07-01 20:26 ` [f2fs-dev] [PATCH 3/3] f2fs: remove redundant check from f2fs_setflags_common() Eric Biggers
2019-07-03 1:58 ` Chao Yu
2019-07-07 20:42 ` Darrick J. Wong
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