along with systemd; If not, see <http://www.gnu.org/licenses/>.
***/
+#include "capability.h"
#include "sd-event.h"
#include "sd-daemon.h"
int main(int argc, char *argv[]) {
_cleanup_manager_free_ Manager *m = NULL;
+ const char *user = "systemd-network";
+ uid_t uid;
+ gid_t gid;
int r;
log_set_target(LOG_TARGET_AUTO);
goto out;
}
+ r = get_user_creds(&user, &uid, &gid, NULL, NULL);
+ if (r < 0) {
+ log_error("Cannot resolve user name %s: %s", user, strerror(-r));
+ goto out;
+ }
+
/* Always create the directories people can create inotify
* watches in. */
- r = mkdir_label("/run/systemd/network", 0755);
+ r = mkdir_safe_label("/run/systemd/netif", 0755, uid, gid);
if (r < 0)
log_error("Could not create runtime directory: %s",
strerror(-r));
- r = mkdir_label("/run/systemd/network/links", 0755);
+ r = mkdir_safe_label("/run/systemd/netif/links", 0755, uid, gid);
if (r < 0)
log_error("Could not create runtime directory 'links': %s",
strerror(-r));
- r = mkdir_label("/run/systemd/network/leases", 0755);
+ r = mkdir_safe_label("/run/systemd/netif/leases", 0755, uid, gid);
if (r < 0)
log_error("Could not create runtime directory 'leases': %s",
strerror(-r));
+ r = drop_privileges(uid, gid,
+ (1ULL << CAP_NET_ADMIN) |
+ (1ULL << CAP_NET_BIND_SERVICE) |
+ (1ULL << CAP_NET_BROADCAST) |
+ (1ULL << CAP_NET_RAW));
+ if (r < 0)
+ goto out;
+
+ assert_se(sigprocmask_many(SIG_BLOCK, SIGTERM, SIGINT, -1) == 0);
+
r = manager_new(&m);
if (r < 0) {
log_error("Could not create manager: %s", strerror(-r));
goto out;
}
- /* write out empty resolv.conf to avoid a
- * dangling symlink */
- r = manager_update_resolv_conf(m);
- if (r < 0) {
- log_error("Could not create resolv.conf: %s", strerror(-r));
- goto out;
- }
-
sd_notify(false,
"READY=1\n"
"STATUS=Processing requests...");