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| author | Li Xi <pkuelelixi@gmail.com> | 2016-01-08 16:01:21 -0500 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2016-01-08 16:01:21 -0500 |
| commit | 040cb3786d9b25293b8b0b05b90da0f871e1eb9b (patch) | |
| tree | bc3decd8a3b122a4334934a4c89e38122b45f2cf /fs/ext4/namei.c | |
| parent | 56a04915df4e85b34b1c1613c64b87dd2283c26a (diff) | |
| download | linux-040cb3786d9b25293b8b0b05b90da0f871e1eb9b.tar.bz2 | |
ext4: adds project ID support
Signed-off-by: Li Xi <lixi@ddn.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reviewed-by: Andreas Dilger <adilger@dilger.ca>
Reviewed-by: Jan Kara <jack@suse.cz>
Diffstat (limited to 'fs/ext4/namei.c')
| -rw-r--r-- | fs/ext4/namei.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/fs/ext4/namei.c b/fs/ext4/namei.c index 06c3afcbfac8..2047ff7c5fbc 100644 --- a/fs/ext4/namei.c +++ b/fs/ext4/namei.c @@ -3208,6 +3208,12 @@ static int ext4_link(struct dentry *old_dentry, if (ext4_encrypted_inode(dir) && !ext4_is_child_context_consistent_with_parent(dir, inode)) return -EPERM; + + 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; + err = dquot_initialize(dir); if (err) return err; @@ -3488,6 +3494,11 @@ 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; + retval = dquot_initialize(old.dir); if (retval) return retval; @@ -3697,6 +3708,14 @@ static int ext4_cross_rename(struct inode *old_dir, struct dentry *old_dentry, new.inode))) return -EPERM; + 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)) || + (ext4_test_inode_flag(old_dir, EXT4_INODE_PROJINHERIT) && + !projid_eq(EXT4_I(old_dir)->i_projid, + EXT4_I(new_dentry->d_inode)->i_projid))) + return -EXDEV; + retval = dquot_initialize(old.dir); if (retval) return retval; |