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| author | Jan Kara <jack@suse.cz> | 2007-07-18 09:24:20 -0400 |
|---|---|---|
| committer | Theodore Ts'o <tytso@mit.edu> | 2007-07-18 09:24:20 -0400 |
| commit | ff9ddf7e847c4dc533f119efb6c77a6e57ab6397 (patch) | |
| tree | fff8ab26370c0e466d96fb99bf3dc566b909a104 | |
| parent | 1e2462f93e011f63fd0f1fedd2c05338ca6b31c2 (diff) | |
| download | kernel-crypto-ff9ddf7e847c4dc533f119efb6c77a6e57ab6397.tar.gz kernel-crypto-ff9ddf7e847c4dc533f119efb6c77a6e57ab6397.tar.xz kernel-crypto-ff9ddf7e847c4dc533f119efb6c77a6e57ab6397.zip | |
ext4: copy i_flags to inode flags on write
Propagate flags such as S_APPEND, S_IMMUTABLE, etc. from i_flags into
ext4-specific i_flags. Quota code changes these flags on quota files
(to make it harder for sysadmin to screw himself) and these changes were
not correctly propagated into the filesystem.
(This is a forward port patch from ext3)
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: Mingming Cao <cmm@us.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
| -rw-r--r-- | fs/ext4/inode.c | 20 | ||||
| -rw-r--r-- | fs/ext4/ioctl.c | 1 | ||||
| -rw-r--r-- | include/linux/ext4_fs.h | 1 |
3 files changed, 22 insertions, 0 deletions
diff --git a/fs/ext4/inode.c b/fs/ext4/inode.c index 8416fa28c42..49035c5a2c4 100644 --- a/fs/ext4/inode.c +++ b/fs/ext4/inode.c @@ -2583,6 +2583,25 @@ void ext4_set_inode_flags(struct inode *inode) inode->i_flags |= S_DIRSYNC; } +/* Propagate flags from i_flags to EXT4_I(inode)->i_flags */ +void ext4_get_inode_flags(struct ext4_inode_info *ei) +{ + unsigned int flags = ei->vfs_inode.i_flags; + + ei->i_flags &= ~(EXT4_SYNC_FL|EXT4_APPEND_FL| + EXT4_IMMUTABLE_FL|EXT4_NOATIME_FL|EXT4_DIRSYNC_FL); + if (flags & S_SYNC) + ei->i_flags |= EXT4_SYNC_FL; + if (flags & S_APPEND) + ei->i_flags |= EXT4_APPEND_FL; + if (flags & S_IMMUTABLE) + ei->i_flags |= EXT4_IMMUTABLE_FL; + if (flags & S_NOATIME) + ei->i_flags |= EXT4_NOATIME_FL; + if (flags & S_DIRSYNC) + ei->i_flags |= EXT4_DIRSYNC_FL; +} + void ext4_read_inode(struct inode * inode) { struct ext4_iloc iloc; @@ -2744,6 +2763,7 @@ static int ext4_do_update_inode(handle_t *handle, if (ei->i_state & EXT4_STATE_NEW) memset(raw_inode, 0, EXT4_SB(inode->i_sb)->s_inode_size); + ext4_get_inode_flags(ei); raw_inode->i_mode = cpu_to_le16(inode->i_mode); if(!(test_opt(inode->i_sb, NO_UID32))) { raw_inode->i_uid_low = cpu_to_le16(low_16_bits(inode->i_uid)); diff --git a/fs/ext4/ioctl.c b/fs/ext4/ioctl.c index 7b4aa4543c8..9737432f079 100644 --- a/fs/ext4/ioctl.c +++ b/fs/ext4/ioctl.c @@ -28,6 +28,7 @@ int ext4_ioctl (struct inode * inode, struct file * filp, unsigned int cmd, 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: { diff --git a/include/linux/ext4_fs.h b/include/linux/ext4_fs.h index 87c2d7a05b0..33b2b1a2d79 100644 --- a/include/linux/ext4_fs.h +++ b/include/linux/ext4_fs.h @@ -868,6 +868,7 @@ extern int ext4_change_inode_journal_flag(struct inode *, int); extern int ext4_get_inode_loc(struct inode *, struct ext4_iloc *); extern void ext4_truncate (struct inode *); extern void ext4_set_inode_flags(struct inode *); +extern void ext4_get_inode_flags(struct ext4_inode_info *); extern void ext4_set_aops(struct inode *inode); extern int ext4_writepage_trans_blocks(struct inode *); extern int ext4_block_truncate_page(handle_t *handle, struct page *page, |