Re: filesystem permissions using dump on live filesystem
On Tue, Feb 24, 2004 at 12:32:07AM -0500, Garance A Drosihn typed: At 11:47 PM -0500 2/23/04, Aaron Peterson wrote: i put a user in the operator group in /etc/group: -snip- and attempted to dump a live filesystem: -snip- what am i missing here? nevermind. i had to log out and log back in. that solved my problems. now my only question is why does one have to log out and log in for addition to a new group to take effect? It is expected that the list of groups that you are a member of will not change very frequently. Thus, the list of your groups is computed at login time, and is kept in memory. If this was not done, then *anything* which checked your groups for access (such as reading a file) would have to read through all of /etc/group to re-calculate that list of groups. Now, it would be easy enough to optimize that simple case (on a machine using just /etc/group), but there is no simple optimization if on machines which are using something like NIS+ or other network directory services to hold the group information. If we really really had to, we could implement something that did that job acceptably well, but it's much easier to just tell people log out, and log back in. Or don't even logout, just 'ssh -l localhost' and start a new session. I would usually just type newgrp operators Ruben -- Garance Alistair Drosehn= [EMAIL PROTECTED] Senior Systems Programmer or [EMAIL PROTECTED] Rensselaer Polytechnic Instituteor [EMAIL PROTECTED] ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED] ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
filesystem permissions using dump on live filesystem
i put a user in the operator group in /etc/group: wkstn% pw groupshow operator operator:*:5:root,alpete and attempted to dump a live filesystem: wkstn% dump -L -0u -f /mnt/storage/incoming/dump_test.dmp /usr /sbin/mksnap_ffs: Permission denied dump: Cannot create /usr/.snap/dump_snapshot: No such file or directory wkstn% wkstn% ls -la /usr total 58 drwxr-xr-x 20 root wheel 512 Feb 14 20:32 ./ drwxr-xr-x 20 root wheel 512 Feb 20 00:58 ../ drwxrwxr-x 2 root operator 512 Feb 13 18:59 .snap/ --snip-- wkstn% cd /usr/.snap wkstn% touch test.tmp touch: test.tmp: Permission denied wkstn% what am i missing here? ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: filesystem permissions using dump on live filesystem
i put a user in the operator group in /etc/group: -snip- and attempted to dump a live filesystem: -snip- what am i missing here? nevermind. i had to log out and log back in. that solved me problems. now my only question is why does one have to log out and log in for addition to a new group to take effect? ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: filesystem permissions using dump on live filesystem
Aaron Peterson wrote: i put a user in the operator group in /etc/group: -snip- and attempted to dump a live filesystem: -snip- what am i missing here? nevermind. i had to log out and log back in. that solved me problems. now my only question is why does one have to log out and log in for addition to a new group to take effect? Why does adding an environment variable to your .profile, .login, or .cshrc not affect your environment unless you source the file? Why must you -SIGHUP a daemon after changing its configuration file? Why does adding a virthost to your httpd.conf not take effect until you restart the daemon? The system has to be informed *somehow* that you've changed something Let's face it, it's much better than you have to restart your computer for changes to take effect. Do you wish to shut down your computer now? ;-) Kevin Kinsey DaleCo, S.P. ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
Re: filesystem permissions using dump on live filesystem
At 11:47 PM -0500 2/23/04, Aaron Peterson wrote: i put a user in the operator group in /etc/group: -snip- and attempted to dump a live filesystem: -snip- what am i missing here? nevermind. i had to log out and log back in. that solved my problems. now my only question is why does one have to log out and log in for addition to a new group to take effect? It is expected that the list of groups that you are a member of will not change very frequently. Thus, the list of your groups is computed at login time, and is kept in memory. If this was not done, then *anything* which checked your groups for access (such as reading a file) would have to read through all of /etc/group to re-calculate that list of groups. Now, it would be easy enough to optimize that simple case (on a machine using just /etc/group), but there is no simple optimization if on machines which are using something like NIS+ or other network directory services to hold the group information. If we really really had to, we could implement something that did that job acceptably well, but it's much easier to just tell people log out, and log back in. Or don't even logout, just 'ssh -l localhost' and start a new session. -- Garance Alistair Drosehn= [EMAIL PROTECTED] Senior Systems Programmer or [EMAIL PROTECTED] Rensselaer Polytechnic Instituteor [EMAIL PROTECTED] ___ [EMAIL PROTECTED] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to [EMAIL PROTECTED]
