Stephen Gran on 8 Jun 2005 00:11:59 -0000 |
On Tue, Jun 07, 2005 at 05:34:13PM -0400, Cosmin Nicolaescu said: > Hello all, > > I recently ran into a very bizzare issue. We are talking about a linux > server, which authenticates via NIS, automounts a directory via nfs. > > We have user A that is a member of several groups, one of which is the one > that owns the automounted directory (let's call it /usr/dir). > > Changing the ownership of /usr/dir to A will give A access. > Changing the groupship of /usr/dir to a group A is a member of AND is in > the the group is among the first 15 of A's groups will give A access. > Changing the groupship to /usr/dir to a group A is a member of AND is not > in the first 15 of A's groups will not give A access to/ /usr/dir. > > I looked up google for the last 30 minutes and couldn't find any > limitation to 15 groups or anything similar. > > Do any of you know of any such limitation, and if so, where is it > (kernel,nis,nfs) ? libc, I believe. A short program that returns sizeof(gid_t) (I think that's the right entry in the pw struct) will tell you on your system. man 3 getpwent will tell you the details of the password struct that defines things like group and password stuff. -- -------------------------------------------------------------------------- | Stephen Gran | Just because the message may never be | | steve@lobefin.net | received does not mean it is not worth | | http://www.lobefin.net/~steve | sending. | -------------------------------------------------------------------------- Attachment:
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