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Handle mkdir() error in cgroups, don't fail if already exists

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Signed-off-by: Joachim Nilsson <troglobit@gmail.com>
This commit is contained in:
Joachim Nilsson
2020-01-06 21:41:43 +01:00
parent 6a5f4398a2
commit 765ef63274
1 changed files with 10 additions and 5 deletions
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src/cgroup.c
+10 -5
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@@ -63,13 +63,15 @@ void cgroup_init(void)
continue;
snprintf(rc, sizeof(rc), "/sys/fs/cgroup/%s", cgroup);
mkdir(rc, 0755);
if (mkdir(rc, 0755) && EEXIST != errno)
continue;
if (mount("cgroup", rc, "cgroup", opts, cgroup))
_d("Failed mounting %s cgroup on %s", cgroup, rc);
}
/* Default cgroups for process monitoring */
mkdir("/sys/fs/cgroup/finit", 0755);
if (mkdir("/sys/fs/cgroup/finit", 0755) && EEXIST != errno)
goto fail;
if (mount("none", "/sys/fs/cgroup/finit", "cgroup", opts, "none,name=finit")) {
_pe("Failed mounting Finit cgroup hierarchy");
goto fail;
@@ -80,9 +82,12 @@ void cgroup_init(void)
echo("/sys/fs/cgroup/finit/notify_on_release", 0, "1");
/* Default groups, PID 1, services, and user/login processes */
mkdir("/sys/fs/cgroup/finit/init", 0755);
mkdir("/sys/fs/cgroup/finit/system", 0755);
mkdir("/sys/fs/cgroup/finit/user", 0755);
if (mkdir("/sys/fs/cgroup/finit/init", 0755) && EEXIST != errno)
goto fail;
if (mkdir("/sys/fs/cgroup/finit/system", 0755) && EEXIST != errno)
goto fail;
if (mkdir("/sys/fs/cgroup/finit/user", 0755) && EEXIST != errno)
goto fail;
/* Move ourselves to init */
echo("/sys/fs/cgroup/finit/init/cgroup.procs", 0, "1");