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tests: containers: Skip if setgroups file does not exist. 

Fixes bug #21226.

Linux 3.19 introduced a fix for a security vulnerability in user namespaces.
This fix introduced a new proc file called 'setgroups' and was backported to
many older kernels.  However, some users run a kernel that is new enough to
support user namespaces yet old enough to not include the patch, so we must
skip the tests.

* tests/containers.scm: Skip all tests if /proc/self/setgroups does not exist.
This commit is contained in:
David Thompson 2015-08-11 08:30:28 -04:00
parent 7549f98415
commit bc459b617f
1 changed files with 4 additions and 2 deletions
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6
tests/containers.scm
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@ -26,8 +26,10 @@
(define (assert-exit x)
(primitive-exit (if x 0 1)))
;; Skip these tests unless user namespaces are available.
(unless (file-exists? "/proc/self/ns/user")
;; Skip these tests unless user namespaces are available and the setgroups
;; file (introduced in Linux 3.19 to address a security issue) exists.
(unless (and (file-exists? "/proc/self/ns/user")
(file-exists? "/proc/self/setgroups"))
(exit 77))
(test-begin "containers")