sticky bit directory

[Steve Rumsby]

This is on a 4.0.1 system - watch.

Script started on Thu Jan 19 08:52:18 1989
% cd /tmp
% ls -al
total 68
drwxrwxrwt 10 bin          2048 Jan 19 08:52 ./
drwxr-xr-x 20 bin          1024 Jan 10 14:52 ../
-rw-r--r--  1 root          200 Jan 17 11:57 .getwd
drwxrwxrwt  2 bin         12800 Jan 19 04:15 alph/
drwxrwxrwt  6 bin          1024 Jan 19 08:42 avon/
drwxr-xr-x  2 steve         512 Nov 21 11:23 cmr/
drwxrwxrwt 10 bin          3584 Jan 19 04:15 inch/
drwxrwxrwt  2 bin         20992 Jan 19 04:15 leam/
drwxr-xr-x  2 root         8192 Nov 10 13:39 lost+found/	<- only two links
drwxr-xr-x  5 steve         512 Nov 17 12:34 sun3.4.0.1/
drwxrwxrwt  2 bin         14848 Jan 19 04:15 swift/
% mv lost+found foo
mv: lost+found: rename: Not owner
% ls -al
total 76
drwxrwxrwt 10 bin          2048 Jan 19 08:52 ./
drwxr-xr-x 20 bin          1024 Jan 10 14:52 ../
-rw-r--r--  1 root          200 Jan 17 11:57 .getwd
drwxrwxrwt  2 bin         12800 Jan 19 04:15 alph/
drwxrwxrwt  6 bin          1024 Jan 19 08:42 avon/
drwxr-xr-x  2 steve         512 Nov 21 11:23 cmr/
drwxr-xr-x  3 root         8192 Nov 10 13:39 foo/		<-
drwxrwxrwt 10 bin          3584 Jan 19 04:15 inch/		  |_ 3 links
drwxrwxrwt  2 bin         20992 Jan 19 04:15 leam/		  |
drwxr-xr-x  3 root         8192 Nov 10 13:39 lost+found/	<-
drwxr-xr-x  5 steve         512 Nov 17 12:34 sun3.4.0.1/
drwxrwxrwt  2 bin         14848 Jan 19 04:15 swift/
% rmdir foo
rmdir: foo: Not owner
% su
Password:
# rmdir foo
rmdir: foo: Directory not empty
# /etc/unlink foo
# ls -al
total 76
drwxrwxrwt 10 bin          2048 Jan 19 08:52 .
drwxr-xr-x 20 bin          1024 Jan 10 14:52 ..
-rw-r--r--  1 root          200 Jan 17 11:57 .getwd
drwxrwxrwt  2 bin         12800 Jan 19 04:15 alph
drwxrwxrwt  6 bin          1024 Jan 19 08:42 avon
drwxr-xr-x  2 steve         512 Nov 21 11:23 cmr
drwxr-xr-x  3 root         8192 Nov 10 13:39 foo
drwxrwxrwt 10 bin          3584 Jan 19 04:15 inch
drwxrwxrwt  2 bin         20992 Jan 19 04:15 leam
drwxr-xr-x  3 root         8192 Nov 10 13:39 lost+found
drwxr-xr-x  5 steve         512 Nov 17 12:34 sun3.4.0.1
drwxrwxrwt  2 bin         14848 Jan 19 04:15 swift
# cat > u.c
main(argc, argv)
int	argc;
char	**argv;
{
	if(unlink(argv[1]) == -1)
		perror(argv[1]);
}
# make u
cc    -sun3 -o u u.c 
# ./u foo
foo: Not owner
# ls -al
total 101
drwxrwxrwt 10 bin          2048 Jan 19 08:54 .
drwxr-xr-x 20 bin          1024 Jan 10 14:52 ..
-rw-r--r--  1 root          200 Jan 17 11:57 .getwd
drwxrwxrwt  2 bin         12800 Jan 19 04:15 alph
drwxrwxrwt  6 bin          1024 Jan 19 08:42 avon
drwxr-xr-x  2 steve         512 Nov 21 11:23 cmr
drwxr-xr-x  3 root         8192 Nov 10 13:39 foo
drwxrwxrwt 10 bin          3584 Jan 19 04:15 inch
drwxrwxrwt  2 bin         20992 Jan 19 04:15 leam
drwxr-xr-x  3 root         8192 Nov 10 13:39 lost+found
drwxr-xr-x  5 steve         512 Nov 17 12:34 sun3.4.0.1
drwxrwxrwt  2 bin         14848 Jan 19 04:15 swift
-rwxr-xr-x  1 root        24576 Jan 19 08:54 u
-rw-r--r--  1 root           90 Jan 19 08:54 u.c
# ^D
% cd /
% su
Password:
# /etc/umount /tmp
# /etc/fsck /tmp
** /dev/rxy1d
** Last Mounted on /tmp
** Phase 1 - Check Blocks and Sizes
** Phase 2 - Check Pathnames
/foo IS AN EXTRANEOUS HARD LINK TO DIRECTORY /lost+found

REMOVE? y

** Phase 3 - Check Connectivity
** Phase 4 - Check Reference Counts
LINK COUNT DIR I=3  OWNER=root MODE=40755
SIZE=8192 MTIME=Nov 10 13:39 1988  COUNT 3 SHOULD BE 2
ADJUST? y

** Phase 5 - Check Cyl groups
3156 files, 40043 used, 37904 free (416 frags, 4686 blocks, 0.5% fragmentation)

***** FILE SYSTEM WAS MODIFIED *****
# /etc/mount /tmp
# cd /tmp
# ls -al
total 93
drwxrwxrwt 10 bin          2048 Jan 19 08:54 .
drwxr-xr-x 20 bin          1024 Jan 10 14:52 ..
-rw-r--r--  1 root          200 Jan 17 11:57 .getwd
drwxrwxrwt  2 bin         12800 Jan 19 04:15 alph
drwxrwxrwt  6 bin          1024 Jan 19 08:42 avon
drwxr-xr-x  2 steve         512 Nov 21 11:23 cmr
drwxrwxrwt 10 bin          3584 Jan 19 04:15 inch
drwxrwxrwt  2 bin         20992 Jan 19 04:15 leam
drwxr-xr-x  2 root         8192 Nov 10 13:39 lost+found
drwxr-xr-x  5 steve         512 Nov 17 12:34 sun3.4.0.1
drwxrwxrwt  2 bin         14848 Jan 19 04:15 swift
-rwxr-xr-x  1 root        24576 Jan 19 08:54 u
-rw-r--r--  1 root           90 Jan 19 08:54 u.c
...
script done on Thu Jan 19 08:56:25 1989

--
UUCP:	 ...!ukc!warwick!steve		Internet: steve at maths.warwick.ac.uk
JANET:	 steve at uk.ac.warwick.maths	PHONE:	 +44 203 523523 x2657

[[ I don't know why I wasn't able to recreate it before.  I thought I was
doing all the right things.  But I have confirmed it now:  this behavior
can be duplicated under 4.0.1.  Thank you for sending a typescript.  It is
much clearer and more precise than a wordy explanation.  --wnl ]]