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| author | Christoph Hellwig <hch@lst.de> | 2010-06-04 11:30:03 +0200 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2010-08-09 16:47:38 -0400 |
| commit | db78b877f7744bec4a9d9f9e7d10da3931d7cd39 (patch) | |
| tree | fd9ee2fbe0998218b6d90322f85b285887e6fe9d /mm | |
| parent | 1025774ce411f2bd4b059ad7b53f0003569b74fa (diff) | |
| download | lwn-db78b877f7744bec4a9d9f9e7d10da3931d7cd39.tar.gz lwn-db78b877f7744bec4a9d9f9e7d10da3931d7cd39.zip | |
always call inode_change_ok early in ->setattr
Make sure we call inode_change_ok before doing any changes in ->setattr,
and make sure to call it even if our fs wants to ignore normal UNIX
permissions, but use the ATTR_FORCE to skip those.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/shmem.c | 10 |
1 files changed, 6 insertions, 4 deletions
diff --git a/mm/shmem.c b/mm/shmem.c index 3b58ad65d26c..0a43505eeaec 100644 --- a/mm/shmem.c +++ b/mm/shmem.c @@ -767,6 +767,10 @@ static int shmem_notify_change(struct dentry *dentry, struct iattr *attr) loff_t newsize = attr->ia_size; int error; + error = inode_change_ok(inode, attr); + if (error) + return error; + if (S_ISREG(inode->i_mode) && (attr->ia_valid & ATTR_SIZE) && newsize != inode->i_size) { struct page *page = NULL; @@ -809,11 +813,9 @@ static int shmem_notify_change(struct dentry *dentry, struct iattr *attr) shmem_truncate_range(inode, newsize, (loff_t)-1); } - error = inode_change_ok(inode, attr); - if (!error) - setattr_copy(inode, attr); + setattr_copy(inode, attr); #ifdef CONFIG_TMPFS_POSIX_ACL - if (!error && (attr->ia_valid & ATTR_MODE)) + if (attr->ia_valid & ATTR_MODE) error = generic_acl_chmod(inode); #endif return error; |