From: Kamalesh Babulal <kamalesh.babulal@oracle.com>
Date: Thu, 26 May 2022 14:12:30 +0000 (-0600)
Subject: api.c: add cgroup error string for ECGNOVERSIONCONVERT
X-Git-Tag: v3.0~69
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c5fe7f83c1feae890523c8d09238ff535caebd58;p=thirdparty%2Flibcgroup.git

api.c: add cgroup error string for ECGNOVERSIONCONVERT

Add the missing error string for the error code ECGNOVERSIONCONVERT to
cgroup_strerror_codes[], that is looked upon to print string version of
the error encountered.

Reproducer:
-----------
$ cat cgrp-strerr.c

int main(void)
{
        int err = ECGNOVERSIONCONVERT;

        fprintf(stderr, "%s\n", cgroup_strerror(err));

        return 0;
}

without the patch:
-----------------
$ ./cgrp-stderr
(null)

with the patch:
---------------
$ ./cgrp-stderr
Failed to convert from cgroup v1 to/from cgroup v2

Signed-off-by: Kamalesh Babulal <kamalesh.babulal@oracle.com>
Signed-off-by: Tom Hromatka <tom.hromatka@oracle.com>
---

diff --git a/src/api.c b/src/api.c
index 42d3beb5..07d16f57 100644
--- a/src/api.c
+++ b/src/api.c
@@ -128,6 +128,7 @@ const char * const cgroup_strerror_codes[] = {
 	"This kernel does not support this feature",
 	"Value setting does not succeed",
 	"Failed to remove a non-empty group",
+	"Failed to convert from cgroup v1 to/from cgroup v2",
 };
 
 static const char * const cgroup_ignored_tasks_files[] = { "tasks", NULL };