diff options
Diffstat (limited to 'src/nspawn/nspawn-cgroup.c')
| -rw-r--r-- | src/nspawn/nspawn-cgroup.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/src/nspawn/nspawn-cgroup.c b/src/nspawn/nspawn-cgroup.c index 4678a7e349..3ca067e5bc 100644 --- a/src/nspawn/nspawn-cgroup.c +++ b/src/nspawn/nspawn-cgroup.c @@ -78,9 +78,12 @@ int sync_cgroup(pid_t pid, CGroupUnified unified_requested, uid_t arg_uid_shift) char tree[] = "/tmp/unifiedXXXXXX", pid_string[DECIMAL_STR_MAX(pid) + 1]; bool undo_mount = false; const char *fn; - int r; + int r, unified_controller; - if (cg_unified(SYSTEMD_CGROUP_CONTROLLER) == (unified_requested >= CGROUP_UNIFIED_SYSTEMD)) + unified_controller = cg_unified(SYSTEMD_CGROUP_CONTROLLER); + if (unified_controller < 0) + return log_error_errno(unified_controller, "Failed to determine whether the systemd hierarchy is unified: %m"); + if ((unified_controller > 0) == (unified_requested >= CGROUP_UNIFIED_SYSTEMD)) return 0; /* When the host uses the legacy cgroup setup, but the @@ -96,7 +99,7 @@ int sync_cgroup(pid_t pid, CGroupUnified unified_requested, uid_t arg_uid_shift) if (!mkdtemp(tree)) return log_error_errno(errno, "Failed to generate temporary mount point for unified hierarchy: %m"); - if (cg_unified(SYSTEMD_CGROUP_CONTROLLER)) + if (unified_controller > 0) r = mount_verbose(LOG_ERR, "cgroup", tree, "cgroup", MS_NOSUID|MS_NOEXEC|MS_NODEV, "none,name=systemd,xattr"); else @@ -150,7 +153,10 @@ int create_subcgroup(pid_t pid, CGroupUnified unified_requested) { if (unified_requested == CGROUP_UNIFIED_NONE) return 0; - if (!cg_unified(SYSTEMD_CGROUP_CONTROLLER)) + r = cg_unified(SYSTEMD_CGROUP_CONTROLLER); + if (r < 0) + return log_error_errno(r, "Failed to determine whether the systemd controller is unified: %m"); + if (r == 0) return 0; r = cg_mask_supported(&supported); |