[PATCH] support_become_root: Don't fail when /proc/<pid/setgroups is missing

[Christian Brauner]

On Sat, Nov 18, 2017 at 01:47:28PM +0100, Florian Weimer wrote:
> On 11/18/2017 02:41 AM, Christian Brauner wrote:
> > The requirement to write "deny" to /proc/<pid>/setgroups for a given user
> > namespace before being able to write a gid mapping was introduced in Linux 3.19.
> > Before that this requirement including the file did not exist. So don't fail
> > when errno == ENOENT.
> 
> The substance of the patch is fine, but please restrict line length to 79
> characters (not 80 or more):
> 
> > +	* support/support_become_root.c (setup_uid_gid_mapping): Don't fail when
> 
> > +  /* Linux 3.19 introduced the setgroups file. We need write "deny" to this file
> 
> > +        FAIL_EXIT1 ("open64 (\"/proc/self/setgroups\", 0x%x, 0%o): %m", O_WRONLY, 0);
> 
> Please also use two spaces after the period at the end of a sentence,
> including the period before the closing comment marker, */.  This affects
> three sentences in two comments.

Thanks! sent v2 of the patch!
Christian
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