merge: don't use system() for loading modules (bgo #740651)

src/NetworkManagerUtils.c

@@ -48,6 +48,7 @@
 #include "nm-setting-wireless-security.h"
 #include "nm-auth-utils.h"
 #include "nm-dbus-glib-types.h"
+#include "gsystem-local-alloc.h"
 
 /*
  * Some toolchains (E.G. uClibc 0.9.33 and earlier) don't export
@@ -175,6 +176,42 @@ nm_spawn_process (const char *args)
 	return status;
 }
 
+int
+nm_utils_modprobe (GError **error, const char *arg1, ...)
+{
+	gs_unref_ptrarray GPtrArray *argv = NULL;
+	int exit_status;
+	gs_free char *_log_str = NULL;
+#define ARGV_TO_STR(argv)   (_log_str ? _log_str : (_log_str = g_strjoinv (" ", (char **) argv->pdata)))
+	GError *local = NULL;
+	va_list ap;
+
+	g_return_val_if_fail (!error || !*error, -1);
+	g_return_val_if_fail (arg1, -1);
+
+	/* construct the argument list */
+	argv = g_ptr_array_sized_new (4);
+	g_ptr_array_add (argv, "/sbin/modprobe");
+	g_ptr_array_add (argv, (char *) arg1);
+
+	va_start (ap, arg1);
+	while ((arg1 = va_arg (ap, const char *)))
+		g_ptr_array_add (argv, (char *) arg1);
+	va_end (ap);
+
+	g_ptr_array_add (argv, NULL);
+
+	nm_log_dbg (LOGD_CORE, "modprobe: '%s'", ARGV_TO_STR (argv));
+	if (!g_spawn_sync (NULL, (char **) argv->pdata, NULL, 0, NULL, NULL, NULL, NULL, &exit_status, &local)) {
+		nm_log_err (LOGD_CORE, "modprobe: '%s' failed: %s", ARGV_TO_STR (argv), local->message);
+		g_propagate_error (error, local);
+		return -1;
+	} else if (exit_status != 0)
+		nm_log_err (LOGD_CORE, "modprobe: '%s' exited with error %d", ARGV_TO_STR (argv), exit_status);
+
+	return exit_status;
+}
+
 /**
  * nm_utils_get_start_time_for_pid:
  * @pid: the process identifier

src/NetworkManagerUtils.h

@@ -51,6 +51,8 @@ nm_utils_ip6_route_metric_normalize (guint32 metric)
 
 int nm_spawn_process (const char *args);
 
+int nm_utils_modprobe (GError **error, const char *arg1, ...) G_GNUC_NULL_TERMINATED;
+
 /* check if @flags has exactly one flag (@check) set. You should call this
  * only with @check being a compile time constant and a power of two. */
 #define NM_FLAGS_HAS(flags, check)  \

src/devices/nm-device.c

@@ -4934,7 +4934,6 @@ nm_device_activate_schedule_ip6_config_timeout (NMDevice *self)
 static gboolean
 share_init (void)
 {
-	int status;
 	char *modules[] = { "ip_tables", "iptable_nat", "nf_nat_ftp", "nf_nat_irc",
 	                    "nf_nat_sip", "nf_nat_tftp", "nf_nat_pptp", "nf_nat_h323",
 	                    NULL };
@@ -4954,20 +4953,8 @@ share_init (void)
 		            errsv, strerror (errsv));
 	}
 
-	for (iter = modules; *iter; iter++) {
+	for (iter = modules; *iter; iter++)
-		char *argv[3] = { "/sbin/modprobe", *iter, NULL };
+		nm_utils_modprobe (NULL, *iter, NULL);
-		char *envp[1] = { NULL };
-		GError *error = NULL;
-
-		if (!g_spawn_sync ("/", argv, envp, G_SPAWN_STDOUT_TO_DEV_NULL | G_SPAWN_STDERR_TO_DEV_NULL,
-		                   NULL, NULL, NULL, NULL, &status, &error)) {
-			nm_log_err (LOGD_SHARING, "share: error loading NAT module %s: (%d) %s",
-			            *iter, error ? error->code : 0,
-			            (error && error->message) ? error->message : "unknown");
-			if (error)
-				g_error_free (error);
-		}
-	}
 
 	return TRUE;
 }

src/platform/nm-linux-platform.c

@@ -2267,7 +2267,6 @@ build_rtnl_link (int ifindex, const char *name, NMLinkType type)
 static gboolean
 link_add (NMPlatform *platform, const char *name, NMLinkType type, const void *address, size_t address_len)
 {
-	int r;
 	struct nl_object *l;
 
 	if (type == NM_LINK_TYPE_BOND) {
@@ -2279,8 +2278,7 @@ link_add (NMPlatform *platform, const char *name, NMLinkType type, const void *a
 		 * bond0 automatically.
 		 */
 		if (!g_file_test ("/sys/class/net/bonding_masters", G_FILE_TEST_EXISTS))
-			/* Ignore return value to shut up the compiler */
+			nm_utils_modprobe (NULL, "bonding", "max_bonds=0", NULL);
-			r = system ("modprobe bonding max_bonds=0");
 	}
 
 	debug ("link: add link '%s' of type '%s' (%d)",

src/ppp-manager/nm-ppp-manager.c

@@ -1068,7 +1068,6 @@ nm_ppp_manager_start (NMPPPManager *manager,
 	NMCmdLine *ppp_cmd;
 	char *cmd_str;
 	struct stat st;
-	int ignored;
 
 	g_return_val_if_fail (NM_IS_PPP_MANAGER (manager), FALSE);
 	g_return_val_if_fail (NM_IS_ACT_REQUEST (req), FALSE);
@@ -1088,7 +1087,7 @@ nm_ppp_manager_start (NMPPPManager *manager,
 
 	/* Make sure /dev/ppp exists (bgo #533064) */
 	if (stat ("/dev/ppp", &st) || !S_ISCHR (st.st_mode))
-		ignored = system ("/sbin/modprobe ppp_generic");
+		nm_utils_modprobe (NULL, "ppp_generic", NULL);
 
 	connection = nm_act_request_get_connection (req);
 	g_assert (connection);