Hi again brief f'up on my previous mail. It looks it has something to do with rights/capabilities/... as I *can* set the suid bit if (but only if) the file is also owned by the primary gid of root (adding root to postdrop does *not* help):
stat postqueue; chown -v root:root postqueue; \ stat postqueue; chmod -v 2555 postqueue; \ stat postqueue; chown -v root:postdrop postqueue; \ stat postqueue File: postqueue Size: 22600 Blocks: 21 IO Block: 23040 regular file Device: 31h/49d Inode: 32397 Links: 1 Access: (0555/-r-xr-xr-x) Uid: ( 0/ root) Gid: ( 110/postdrop) Access: 2017-12-21 14:34:21.000000000 +0000 Modify: 2017-09-27 04:56:28.000000000 +0000 Change: 2017-12-21 15:30:03.058681568 +0000 Birth: - changed ownership of 'postqueue' from root:postdrop to root:root File: postqueue Size: 22600 Blocks: 21 IO Block: 23040 regular file Device: 31h/49d Inode: 32397 Links: 1 Access: (0555/-r-xr-xr-x) Uid: ( 0/ root) Gid: ( 0/ root) Access: 2017-12-21 14:34:21.000000000 +0000 Modify: 2017-09-27 04:56:28.000000000 +0000 Change: 2017-12-21 15:31:34.227390065 +0000 Birth: - mode of 'postqueue' changed from 0555 (r-xr-xr-x) to 2555 (r-xr-sr-x) File: postqueue Size: 22600 Blocks: 21 IO Block: 23040 regular file Device: 31h/49d Inode: 32397 Links: 1 Access: (2555/-r-xr-sr-x) Uid: ( 0/ root) Gid: ( 0/ root) Access: 2017-12-21 14:34:21.000000000 +0000 Modify: 2017-09-27 04:56:28.000000000 +0000 Change: 2017-12-21 15:31:34.231390097 +0000 Birth: - changed ownership of 'postqueue' from root:root to root:postdrop File: postqueue Size: 22600 Blocks: 21 IO Block: 23040 regular file Device: 31h/49d Inode: 32397 Links: 1 Access: (0555/-r-xr-xr-x) Uid: ( 0/ root) Gid: ( 110/postdrop) Access: 2017-12-21 14:34:21.000000000 +0000 Modify: 2017-09-27 04:56:28.000000000 +0000 Change: 2017-12-21 15:31:34.239390160 +0000 Birth: - What really puzzles me is that the last chown resets it. Does this ring any bell with anyone? I'm still at a loss here. Cheers Carsten PS: Ruled out so far: The two different Linux kernel versions and ZFS setting xattr (sa vs. on) _______________________________________________ lxc-users mailing list [email protected] http://lists.linuxcontainers.org/listinfo/lxc-users
