X-Git-Url: http://git.ozlabs.org/?p=petitboot;a=blobdiff_plain;f=discover%2Fdevice-handler.c;h=9de2a1901ea16b41f1f78513bec59cfbfc302f87;hp=9868e5112c419d2c8faad2ec34e9fdd25919830f;hb=5f339d4485e450adac994c190bfafb45734bcae9;hpb=77108275fe6c5cefa1b7d330a3acf48c12275230

diff --git a/discover/device-handler.c b/discover/device-handler.c
index 9868e51..9de2a19 100644
--- a/discover/device-handler.c
+++ b/discover/device-handler.c
@@ -897,7 +897,7 @@ out:
 	 * TRANSLATORS: the format specifier in this string is a Linux
 	 * device identifier, like 'sda1'
 	 */
-	status->message = talloc_asprintf(status,_("Processing %s complete\n"),
+	status->message = talloc_asprintf(status,_("Processing %s complete"),
 				dev->device->id);
 	boot_status(handler, status);
 
@@ -936,7 +936,7 @@ int device_handler_dhcp(struct device_handler *handler,
 	 * TRANSLATORS: this format specifier will be the name of a network
 	 * device, like 'eth0'.
 	 */
-	status->message = talloc_asprintf(status,_("Processing %s complete\n"),
+	status->message = talloc_asprintf(status,_("Processing %s complete"),
 				dev->device->id);
 	boot_status(handler, status);
 
@@ -1099,10 +1099,12 @@ static char *device_from_addr(void *ctx, struct pb_url *url)
 
 	rc = process_run_sync(p);
 
-	if (rc) {
+	if (rc || p->exit_status) {
 		/* ip has complained for some reason; most likely
 		 * there is no route to the host - bail out */
-		pb_debug("%s: No route to %s\n",__func__,url->host);
+		pb_debug("%s: `ip` returns non-zero exit status\n", __func__);
+		pb_debug("ip buf: %s\n", p->stdout_buf);
+		process_release(p);
 		return NULL;
 	}
 
@@ -1125,9 +1127,8 @@ static char *device_from_addr(void *ctx, struct pb_url *url)
 	return dev;
 }
 
-
 void device_handler_process_url(struct device_handler *handler,
-		const char *url)
+		const char *url, const char *mac, const char *ip)
 {
 	struct discover_context *ctx;
 	struct discover_device *dev;
@@ -1153,11 +1154,25 @@ void device_handler_process_url(struct device_handler *handler,
 	event->type = EVENT_TYPE_USER;
 	event->action = EVENT_ACTION_CONF;
 
-	event->params = talloc_array(event, struct param, 1);
-	param = &event->params[0];
-	param->name = talloc_strdup(event, "pxeconffile");
-	param->value = talloc_strdup(event, url);
-	event->n_params = 1;
+	if (url[strlen(url) - 1] == '/') {
+		event->params = talloc_array(event, struct param, 3);
+		param = &event->params[0];
+		param->name = talloc_strdup(event, "pxepathprefix");
+		param->value = talloc_strdup(event, url);
+		param = &event->params[1];
+		param->name = talloc_strdup(event, "mac");
+		param->value = talloc_strdup(event, mac);
+		param = &event->params[2];
+		param->name = talloc_strdup(event, "ip");
+		param->value = talloc_strdup(event, ip);
+		event->n_params = 3;
+	} else {
+		event->params = talloc_array(event, struct param, 1);
+		param = &event->params[0];
+		param->name = talloc_strdup(event, "pxeconffile");
+		param->value = talloc_strdup(event, url);
+		event->n_params = 1;
+	}
 
 	pb_url = pb_url_parse(event, event->params->value);
 	if (!pb_url || !pb_url->host) {
@@ -1272,6 +1287,28 @@ static inline const char *get_device_path(struct discover_device *dev)
 	return dev->ramdisk ? dev->ramdisk->snapshot : dev->device_path;
 }
 
+static char *check_subvols(struct discover_device *dev)
+{
+	const char *fstype = discover_device_get_param(dev, "ID_FS_TYPE");
+	struct stat sb;
+	char *path;
+	int rc;
+
+	if (strncmp(fstype, "btrfs", strlen("btrfs")))
+		return dev->mount_path;
+
+	/* On btrfs a device's root may be under a subvolume path */
+	path = join_paths(dev, dev->mount_path, "@");
+	rc = stat(path, &sb);
+	if (!rc && S_ISDIR(sb.st_mode)) {
+		pb_debug("Using '%s' for btrfs root path\n", path);
+		return path;
+	}
+
+	talloc_free(path);
+	return dev->mount_path;
+}
+
 static bool check_existing_mount(struct discover_device *dev)
 {
 	struct stat devstat, mntstat;
@@ -1313,6 +1350,7 @@ static bool check_existing_mount(struct discover_device *dev)
 
 		if (mntstat.st_rdev == devstat.st_rdev) {
 			dev->mount_path = talloc_strdup(dev, mnt->mnt_dir);
+			dev->root_path = check_subvols(dev);
 			dev->mounted_rw = !!hasmntopt(mnt, "rw");
 			dev->mounted = true;
 			dev->unmount = false;
@@ -1375,6 +1413,7 @@ static int mount_device(struct discover_device *dev)
 		dev->mounted = true;
 		dev->mounted_rw = false;
 		dev->unmount = true;
+		dev->root_path = check_subvols(dev);
 		return 0;
 	}
 
@@ -1413,6 +1452,7 @@ static int umount_device(struct discover_device *dev)
 
 	talloc_free(dev->mount_path);
 	dev->mount_path = NULL;
+	dev->root_path = NULL;
 
 	return 0;
 }
@@ -1472,7 +1512,6 @@ mount_ro:
 void device_release_write(struct discover_device *dev, bool release)
 {
 	const char *fstype, *device_path;
-	int rc = 0;
 
 	if (!release)
 		return;
@@ -1495,10 +1534,9 @@ void device_release_write(struct discover_device *dev, bool release)
 		device_path = get_device_path(dev);
 	}
 
-	mount(device_path, dev->mount_path, fstype,
+	if (mount(device_path, dev->mount_path, fstype,
 			MS_RDONLY | MS_SILENT,
-			fs_parameters(dev, MS_RDONLY));
-	if (rc)
+			fs_parameters(dev, MS_RDONLY)))
 		pb_log("Failed to remount %s read-only: %s\n",
 		       device_path, strerror(errno));
 	else