Systemd/src/test/test-helper.c
Lennart Poettering 0c69794138 tree-wide: remove Lennart's copyright lines
These lines are generally out-of-date, incomplete and unnecessary. With
SPDX and git repository much more accurate and fine grained information
about licensing and authorship is available, hence let's drop the
per-file copyright notice. Of course, removing copyright lines of others
is problematic, hence this commit only removes my own lines and leaves
all others untouched. It might be nicer if sooner or later those could
go away too, making git the only and accurate source of authorship
information.
2018-06-14 10:20:20 +02:00

30 lines
1,003 B
C

/* SPDX-License-Identifier: LGPL-2.1+ */
#include "test-helper.h"
#include "random-util.h"
#include "alloc-util.h"
#include "cgroup-util.h"
int enter_cgroup_subroot(void) {
_cleanup_free_ char *cgroup_root = NULL, *cgroup_subroot = NULL;
CGroupMask supported;
int r;
r = cg_pid_get_path(NULL, 0, &cgroup_root);
if (r == -ENOMEDIUM)
return log_warning_errno(r, "cg_pid_get_path(NULL, 0, ...) failed: %m");
assert(r >= 0);
assert_se(asprintf(&cgroup_subroot, "%s/%" PRIx64, cgroup_root, random_u64()) >= 0);
assert_se(cg_mask_supported(&supported) >= 0);
/* If this fails, then we don't mind as the later cgroup operations will fail too, and it's fine if we handle
* any errors at that point. */
r = cg_create_everywhere(supported, _CGROUP_MASK_ALL, cgroup_subroot);
if (r < 0)
return r;
return cg_attach_everywhere(supported, cgroup_subroot, 0, NULL, NULL);
}