Date: Thu, 07 Feb 2008 19:07:11 +0100 From: Pietro Cerutti <gahr@gahr.ch> To: User Questions <freebsd-questions@freebsd.org> Subject: cp -p Message-ID: <47AB48CF.1020804@gahr.ch>
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[-- Attachment #1 --] Hi list, here's the situation: HostServer exports via NFS /www, which belongs to user:www (uid=1001, gid=80). The directory has the segid flag set: drwsr-xr-x 13 user www 512 Feb 7 00:58 www HostClient mounts the exported directory on /share/www. HostClient doesn't know anything about gid 80. Now, on HostClient, user copies aFile to /share/www using the -p flag of cp(1). > cp -p aFile /share/www/ > ls -l -rw------- 1 user user 2981888 Feb 7 01:09 /www/aFile As shown, the setgid flag of /www hasn't worked. Now in man cp, I can read the following: "If the source file has its set-user-ID bit on and the user ID cannot be preserved, the set-user-ID bit is not preserved in the copy's permissions. If the source file has its set-group-ID bit on and the group ID cannot be preserved, the set-group-ID bit is not preserved in the copy's permissions. If the source file has both its set-user-ID and set-group-ID bits on, and either the user ID or group ID cannot be preserved, neither the set-user-ID nor set-group-ID bits are preserved in the copy's permissions." I cannot find anywhere information such as "If the /*destination*/ file directory has its set-group-ID bit on and the group-ID cannot be preserved, the set-group-ID bit is not preserved in the copy's permissions." Assuming that this is the correct and expected behavior, why is it like this? Thank you, -- Pietro Cerutti PGP Public Key: http://gahr.ch/pgp [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (FreeBSD) iD8DBQFHq0jTwMJqmJVx944RCtXZAJ4ly0WsDGcy0i2LlXcCwzzFWE2KLgCgodop SBflmiZjcEP0M7wf+gdiJL0= =A2Ez -----END PGP SIGNATURE-----
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