On Wed, 09 November 2011 Bruno Prémont wrote: > On a x86_64 system I'm getting permission denied when trying to chdir() > into a directory where I have only 'x' permissions (be it with unix > permissions or with posix ACLs). > For the same layout of directory I can successfully chdir() on x86 as I > can with older kernels of 2.6 series. > > In both cases the filesystem is tmpfs with support for posix ACLs and > kernel is 3.1.0. > > > Directory layout: > drwx--x--- 3 root test 60 Nov 9 21:14 /tmp/btest > drwxrwx--- 2 root test 40 Nov 9 21:14 /tmp/btest/subtest > drwxr-x---+ 3 root root 60 Nov 9 21:10 /tmp/test > drwxrwx---+ 2 root root 40 Nov 9 21:10 /tmp/test/subtest > > Posix ACLs > # file: /tmp/test > # owner: root > # group: root > user::rwx > group::r-x > group:test:--x > mask::r-x > other::--- > > # file: test/subtest/ > # owner: root > # group: root > user::rwx > group::r-x > group:test:rwx > mask::rwx > other::--- > > > When executing as user test (with test as only group), on x86_64 I get > EPERM on chdir(X) where X is any one of the 4 directories above. > > On x86 I can chdir() into the directory without issue (as expected), > and when in /tmp/test (or /tmp/btest) I get EPERM when trying to list > contents - expected as well. Under subtest I can list content. > > The same results are obtained on XFS filesystem. > > Any idea what's wrong? The issue was two entries in /etc/group for the same group name but with two distinct GIDs :/ This explains why I could not reproduce on a different system! Bruno -- To unsubscribe from this list: send the line "unsubscribe linux-fsdevel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
