cmd/libsnap-confine-private: tweak cgroup v2 detection

Signed-off-by: Maciej Borzecki <maciej.zenon.borzecki@canonical.com> 

1 files changed, 5 insertions, 3 deletions

diff --git a/cmd/libsnap-confine-private/cgroup-support.c b/cmd/libsnap-confine-private/cgroup-support.c
index c345911616..7ddb672266 100644
--- a/cmd/libsnap-confine-private/cgroup-support.c
+++ b/cmd/libsnap-confine-private/cgroup-support.c
@@ -82,11 +82,13 @@ bool sc_cgroup_is_v2() {
 static bool did_warn = false;
 struct statfs buf;
 
- int err = statfs(cgroup_dir, &buf);
- if (err != 0 && errno != ENOENT) {
+ if (statfs(cgroup_dir, &buf) != 0) {
+ if (errno == ENOENT) {
+ return false;
+ }
 die("cannot statfs %s", cgroup_dir);
 }
- if (err == 0 && buf.f_type == CGROUP2_SUPER_MAGIC) {
+ if (buf.f_type == CGROUP2_SUPER_MAGIC) {
 if (!did_warn) {
 fprintf(stderr, "WARNING: cgroup v2 is not fully supported yet\n");
 did_warn = true;