This is indeed a yaffs issue. I was alerted to it yesterday and intend to look at it in depth today. Reagrds -- CHarles On Thursday 21 May 2009 15:37:17 SHAM - 沈立刚 wrote: > I got a question in the android emulator which use Yaffs2 file system: > > When I create or delete a file in a directory, the mtime and ctime of > the directoy do not change. This issue does not appear in other > filesystems. > > # cd /data > # > # mkdir test > # /data/busybox stat test > File: "test" > Size: 2048 Blocks: 4 IO Block: 4096 directory > Device: 1f01h/7937d Inode: 551 Links: 1 > Access: (0777/drwxrwxrwx) Uid: ( 0/ UNKNOWN) Gid: ( 0/ UNKNOWN) > Access: 2009-05-21 03:22:21.000000000 > Modify: 2009-05-21 03:22:21.000000000 > Change: 2009-05-21 03:22:21.000000000 > > # cd test > # /data/busybox touch aaa > # /data/busybox stat aaa > File: "aaa" > Size: 0 Blocks: 0 IO Block: 4096 regular empty file > Device: 1f01h/7937d Inode: 561 Links: 1 > Access: (0666/-rw-rw-rw-) Uid: ( 0/ UNKNOWN) Gid: ( 0/ UNKNOWN) > Access: 2009-05-21 03:23:15.000000000 > Modify: 2009-05-21 03:23:15.000000000 > Change: 2009-05-21 03:23:15.000000000 > > # cd .. > # /data/busybox stat test > File: "test" > Size: 2048 Blocks: 4 IO Block: 4096 directory > Device: 1f01h/7937d Inode: 551 Links: 1 > Access: (0777/drwxrwxrwx) Uid: ( 0/ UNKNOWN) Gid: ( 0/ UNKNOWN) > Access: 2009-05-21 03:22:21.000000000 > Modify: 2009-05-21 03:22:21.000000000 > Change: 2009-05-21 03:22:21.000000000 > > _______________________________________________ > yaffs mailing list > yaffs@lists.aleph1.co.uk > http://lists.aleph1.co.uk/cgi-bin/mailman/listinfo/yaffs