> Am 27.07.2016 um 17:36 schrieb László Házy <haz...@yahoo.com>: > > Yes, user2 has rx access to /home/user1. This is done by the first command in > the list of commands, namely: "[user1]$ chmod g+rx /home/user1". The two > users are part of the same group. > > An even more troublesome variation, involving root, is the following: > > [user1]$ touch file; ls -l file > -rw-r--r--. 1 user1 users 0 Jul 26 15:24 file
The dot at the end means SELinux ACL IIRC - are you running SELinux? -- Reuti > [user1]$ ln -s /home/user1/file /var/tmp/link > [user1]$ ls -l /var/tmp/link > lrwxrwxrwx. 1 user1 users 17 Jul 26 15:26 /var/tmp/link -> /home/user1/file > > [user1]$ [[ -f /var/tmp/link ]]; echo $? > 0 > > [user1]$ su > [root]$ [[ -f /var/tmp/link ]]; echo $? > 1 > > > On Tue, 2016-07-26 at 23:26 +0200, Reuti wrote: >> Am 26.07.2016 um 23:07 schrieb László Házy: >> >> >>> >>> Hmm, interesting. I can reproduce your results. Thanks. >>> However, note the following: >>> >>> [user1]$ chmod g+rx /home/user1 >>> [user1]$ touch file; ls -l file >>> -rw-r--r--. 1 user1 users 0 Jul 26 15:24 file >>> >>> [user1]$ su user2 -c "ln -s /home/user1/file /var/tmp/link" >>> [user1]$ ls -l /var/tmp/link >>> lrwxrwxrwx. 1 user2 users 17 Jul 26 15:26 /var/tmp/link -> /home/user1/file >>> >>> [user1]$ [[ -f /var/tmp/link ]]; echo $? >>> 1 >>> >>> [user1]$ su user2 >>> [user2]$ [[ -f /var/tmp/link ]]; echo $? >>> 0 >>> >>> Something does not add up. >>> >> >> >> Does user2 have rx access to /home/user1? >> >> -- Reuti >> >> >> >>> >>> From experimenting, it appears that only the user who created the symlink >>> will get true for the file test. >>> >>> Thank you. >>> >>> >>> >>> >>> On Tue, 2016-07-26 at 15:06 -0400, Grisha Levit wrote: >>> >>>> >>>> Are you sure "file" is a link to an actual file, not, say, a directory? >>>> >>>> $ rpm -q bash; echo $BASH_VERSION; cat /etc/redhat-release >>>> bash-4.3.42-3.fc23.x86_64 >>>> 4.3.42(1)-release >>>> Fedora release 23 (Twenty Three) >>>> >>>> $ touch file; ln -s file link; [[ -f link ]]; echo $? >>>> 0 >>>> >>>> On Tue, Jul 26, 2016 at 12:58 PM, László Házy < >>>> haz...@yahoo.com >>>> > wrote: >>>> >>>>> >>>>> I am running bash 4.3.42-3 on Fedore Core 23. >>>>> >>>>> I noticed that the [ -f file ] test returns false if "file" is a symlink. >>>>> Given the intended behavior (from a long time ago), this is wrong as the >>>>> symlinks are supposed to be followed. It certainly brakes functionality >>>>> in certain existing software. >>>>> >>>>> Has the default behavior been changed somewhere along the time line and I >>>>> am not aware of it? >>>>> >>>>> >>>>> >>>> >>>> >>>> >>> >> >> >>
