From 28be5abb400e5e082f5225105fdc69337ec0c0b4 Mon Sep 17 00:00:00 2001 From: Jan Kara Date: Tue, 8 May 2007 00:30:33 -0700 Subject: ext3: copy i_flags to inode flags on write A patch that stores inode flags such as S_IMMUTABLE, S_APPEND, etc. from i_flags to EXT3_I(inode)->i_flags when inode is written to disk. The same thing is done on GETFLAGS ioctl. 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 (especially, lsattr did not show them and users were wondering...). Propagate flags such as S_APPEND, S_IMMUTABLE, etc. from i_flags into ext3-specific i_flags. Hence, when someone sets these flags via a different interface than ioctl, they are stored correctly. Signed-off-by: Jan Kara Cc: Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- fs/ext3/inode.c | 20 ++++++++++++++++++++ fs/ext3/ioctl.c | 1 + 2 files changed, 21 insertions(+) (limited to 'fs') diff --git a/fs/ext3/inode.c b/fs/ext3/inode.c index f9bcddbd2ef..e1bb0317198 100644 --- a/fs/ext3/inode.c +++ b/fs/ext3/inode.c @@ -2580,6 +2580,25 @@ void ext3_set_inode_flags(struct inode *inode) inode->i_flags |= S_DIRSYNC; } +/* Propagate flags from i_flags to EXT3_I(inode)->i_flags */ +void ext3_get_inode_flags(struct ext3_inode_info *ei) +{ + unsigned int flags = ei->vfs_inode.i_flags; + + ei->i_flags &= ~(EXT3_SYNC_FL|EXT3_APPEND_FL| + EXT3_IMMUTABLE_FL|EXT3_NOATIME_FL|EXT3_DIRSYNC_FL); + if (flags & S_SYNC) + ei->i_flags |= EXT3_SYNC_FL; + if (flags & S_APPEND) + ei->i_flags |= EXT3_APPEND_FL; + if (flags & S_IMMUTABLE) + ei->i_flags |= EXT3_IMMUTABLE_FL; + if (flags & S_NOATIME) + ei->i_flags |= EXT3_NOATIME_FL; + if (flags & S_DIRSYNC) + ei->i_flags |= EXT3_DIRSYNC_FL; +} + void ext3_read_inode(struct inode * inode) { struct ext3_iloc iloc; @@ -2735,6 +2754,7 @@ static int ext3_do_update_inode(handle_t *handle, if (ei->i_state & EXT3_STATE_NEW) memset(raw_inode, 0, EXT3_SB(inode->i_sb)->s_inode_size); + ext3_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/ext3/ioctl.c b/fs/ext3/ioctl.c index 9b8090d94e6..965006dba6b 100644 --- a/fs/ext3/ioctl.c +++ b/fs/ext3/ioctl.c @@ -28,6 +28,7 @@ int ext3_ioctl (struct inode * inode, struct file * filp, unsigned int cmd, switch (cmd) { case EXT3_IOC_GETFLAGS: + ext3_get_inode_flags(ei); flags = ei->i_flags & EXT3_FL_USER_VISIBLE; return put_user(flags, (int __user *) arg); case EXT3_IOC_SETFLAGS: { -- cgit v1.2.3-18-g5258