[SOLVED] "Permission denied when trying to build mono on slack 14.1

camorri · 12-17-2014, 02:54 PM

First of all, I have the pre-req's installed.

Quote:

ls -l /var/log/packages | grep libgdiplus
-rw-r--r-- 1 root root 1036 Dec 17 14:33 libgdiplus-2.10.9-i486-2_SBo

The error I get:

Code:

mono-3.2.3/aclocal.m4
patching file data/config.in
./mono.SlackBuild: line 56: ./configure: Permission denied

root@duelie:/home/cliff/src/mono# ls -l
total 79924
-rw-r--r-- 1 cliff users      385 Nov 26  2013 README
-rw-r--r-- 1 cliff users      990 Dec 14  2013 doinst.sh
-rw-r--r-- 1 cliff users      713 Sep  5 12:28 libgdiplus-libdir.patch
-rw-r--r-- 1 cliff users 81810387 Dec 17 15:36 mono-3.2.3.tar.bz2
-rwxr-xr-x 1 cliff users     2947 Sep  5 12:28 mono.SlackBuild*
-rw-r--r-- 1 cliff users      316 Dec 14  2013 mono.info
-rw-r--r-- 1 cliff users      912 Nov 26  2013 slack-desc

I have looked at the slackbuild, however I have no idea why I get permission denied. I have 'su -' to run the slackbuild. I have also tried to run it from the sbopkg gui, and I tried the qfile for mono. All fail with permission denied.

Your thoughts on this?

willysr · 12-17-2014, 03:20 PM

check your /tmp/SBo permission

camorri · 12-17-2014, 04:15 PM

Permission on /tmp/SBo

Quote:

ls -ld /tmp/SBo
drwxr-xr-x 6 root root 120 Dec 17 15:37 /tmp/SBo/

and the dir's inside /tmp/SBo

Quote:

ls -l
total 0
drwxr-xr-x 6 root root 580 Jan 31 2012 libgdiplus-2.10.9/
drwxr-xr-x 19 root root 940 Sep 13 2013 mono-3.2.3/
drwxr-xr-x 2 root root 40 Dec 17 15:27 package-libgdiplus/
drwxr-xr-x 2 root root 40 Dec 17 15:37 package-mono/

Root has write permission.

55020 · 12-17-2014, 05:49 PM

Is /tmp a mounted filesystem, with the noexec option?

camorri · 12-17-2014, 06:31 PM

Yes, it is mounted with the noexec option.

Your question got me thinking. I had made a change in /etc/fstab because I ran out of /tmp space compiling.

Here are the two lines I switched.

Quote:

tmpfs /dev/shm tmpfs defaults,nodev,nosuid,noexec 0 0
#tmpfs /tmp tmpfs defaults,nodev,nosuid,noexec 0 0

The first one is the one I'm running now, the "permission denied" problem is gone. I had the second one in use. I wanted tmpfs on the HDD. However, with this line I got permission denied.

I don't know what is wrong with this line. Your thoughts?

55020 · 12-18-2014, 03:58 AM

In case it isn't obvious what 'noexec' does, it suppresses execution permission for the relevant filesystem where otherwise it would be permitted. This is for people who worry about what's on USB sticks or what might happen if an attacker could write to /tmp.

Quote:

Originally Posted by camorri

tmpfs /dev/shm tmpfs defaults,nodev,nosuid,noexec 0 0

This mounts a ramdisk on /dev/shm to provide 'shared memory', it doesn't go anywhere near /tmp

Quote:

Originally Posted by camorri

tmpfs /tmp tmpfs defaults,nodev,nosuid,noexec 0 0

This mounts a ramdisk on /tmp. You asked for noexec on /tmp, and noexec on /tmp is what you got :P

camorri · 12-18-2014, 02:49 PM

I have removed the 'noexec' parameter. I was able to compile mono, so I'm marking this thread solved.
Thank-you to those who helped.