X-Git-Url: http://git.ozlabs.org/?p=petitboot;a=blobdiff_plain;f=discover%2Fdevice-handler.c;h=ab27b51b2eaf764d98a37b7df3185dd49d46a20b;hp=af48f5c6ea0648a81db4842c948011f6decde855;hb=bd06734362bb727b09b943688d9b69aa0a84590d;hpb=764741bda57e79ff4d30cfb5eb5d01f11a89c29e

diff --git a/discover/device-handler.c b/discover/device-handler.c
index af48f5c..ab27b51 100644
--- a/discover/device-handler.c
+++ b/discover/device-handler.c
@@ -10,21 +10,20 @@
 #include <talloc/talloc.h>
 #include <list/list.h>
 #include <log/log.h>
-#include <pb-protocol/pb-protocol.h>
+#include <types/types.h>
 #include <system/system.h>
 
 #include "device-handler.h"
 #include "discover-server.h"
+#include "event.h"
 #include "parser.h"
 #include "udev.h"
 #include "paths.h"
-
-#define MOUNT_BIN "/bin/mount"
-
-#define UMOUNT_BIN "/bin/umount"
+#include "boot.h"
 
 struct device_handler {
 	struct discover_server *server;
+	int dry_run;
 
 	struct device **devices;
 	unsigned int n_devices;
@@ -32,11 +31,6 @@ struct device_handler {
 	struct list contexts;
 };
 
-struct mount_map {
-	char *device_path;
-	char *mount_point;
-};
-
 /**
  * device_handler_add - Add a device to the handler device array.
  */
@@ -63,7 +57,7 @@ static void device_handler_remove(struct device_handler *handler,
 		if (handler->devices[i] == device)
 			break;
 
-	if (i < handler->n_devices) {
+	if (i == handler->n_devices) {
 		assert(0 && "unknown device");
 		return;
 	}
@@ -91,7 +85,7 @@ static struct device *device_handler_find(struct device_handler *handler,
 			&& streq(handler->devices[i]->id, id))
 			return handler->devices[i];
 
-	assert(0 && "unknown device");
+	pb_log("%s: unknown device: %s\n", __func__, id);
 	return NULL;
 }
 
@@ -141,7 +135,7 @@ static void setup_device_links(struct discover_context *ctx)
 		char *enc, *dir, *path;
 		const char *value;
 
-		value = udev_event_param(ctx->event, link->env);
+		value = event_get_param(ctx->event, link->env);
 		if (!value || !*value)
 			continue;
 
@@ -193,15 +187,25 @@ static int mount_device(struct discover_context *ctx)
 		pb_log("couldn't create mount directory %s: %s\n",
 				ctx->mount_path, strerror(errno));
 
-	argv[0] = MOUNT_BIN;
+	argv[0] = pb_system_apps.mount;
 	argv[1] = ctx->device_path;
 	argv[2] = ctx->mount_path;
 	argv[3] = "-o";
 	argv[4] = "ro";
 	argv[5] = NULL;
 
-	if (pb_run_cmd(argv))
-		goto out_rmdir;
+	if (pb_run_cmd(argv, 1, 0)) {
+
+		/* Retry mount without ro option. */
+
+		argv[0] = pb_system_apps.mount;
+		argv[1] = ctx->device_path;
+		argv[2] = ctx->mount_path;
+		argv[3] = NULL;
+
+		if (pb_run_cmd(argv, 1, 0))
+			goto out_rmdir;
+	}
 
 	setup_device_links(ctx);
 	return 0;
@@ -225,7 +229,8 @@ static int umount_device(struct discover_context *ctx)
 	}
 
 	if (pid == 0) {
-		execl(UMOUNT_BIN, UMOUNT_BIN, ctx->mount_path, NULL);
+		execl(pb_system_apps.umount, pb_system_apps.umount,
+						ctx->mount_path, NULL);
 		exit(EXIT_FAILURE);
 	}
 
@@ -266,10 +271,11 @@ static int destroy_context(void *arg)
 	return 0;
 }
 
-static int handle_add_event(struct device_handler *handler,
-		struct udev_event *event)
+static int handle_add_udev_event(struct device_handler *handler,
+		struct event *event)
 {
 	struct discover_context *ctx;
+	struct boot_option *opt;
 	const char *devname;
 	int rc;
 
@@ -282,12 +288,8 @@ static int handle_add_event(struct device_handler *handler,
 
 	ctx->id = talloc_strdup(ctx, event->device);
 
-	devname = udev_event_param(ctx->event, "DEVNAME");
-	if (!devname) {
-		pb_log("no devname for %s?\n", event->device);
-		return 0;
-	}
-
+	devname = event_get_param(ctx->event, "DEVNAME");
+	assert(devname);
 	ctx->device_path = talloc_strdup(ctx, devname);
 
 	rc = mount_device(ctx);
@@ -310,13 +312,16 @@ static int handle_add_event(struct device_handler *handler,
 	/* add device to handler device array */
 	device_handler_add(handler, ctx->device);
 
-	discover_server_notify_add(handler->server, ctx->device);
+	discover_server_notify_device_add(handler->server, ctx->device);
+
+	list_for_each_entry(&ctx->device->boot_options, opt, list)
+		discover_server_notify_boot_option_add(handler->server, opt);
 
 	return 0;
 }
 
-static int handle_remove_event(struct device_handler *handler,
-		struct udev_event *event)
+static int handle_remove_udev_event(struct device_handler *handler,
+		struct event *event)
 {
 	struct discover_context *ctx;
 
@@ -324,7 +329,7 @@ static int handle_remove_event(struct device_handler *handler,
 	if (!ctx)
 		return 0;
 
-	discover_server_notify_remove(handler->server, ctx->device);
+	discover_server_notify_device_remove(handler->server, ctx->device);
 
 	/* remove device from handler device array */
 	device_handler_remove(handler, ctx->device);
@@ -334,25 +339,85 @@ static int handle_remove_event(struct device_handler *handler,
 	return 0;
 }
 
-int device_handler_event(struct device_handler *handler,
-		struct udev_event *event)
+static int handle_add_user_event(struct device_handler *handler,
+		struct event *event)
 {
-	int rc;
+	struct boot_option *opt;
+	struct device *device;
+
+	assert(event->device);
+
+	device = talloc_zero(handler, struct device);
+
+	if (!device)
+		goto fail;
+
+	device->id = talloc_strdup(device, event->device);
+	list_init(&device->boot_options);
+
+	parse_user_event(device, event);
+
+	discover_server_notify_device_add(handler->server, device);
+
+	list_for_each_entry(&device->boot_options, opt, list)
+		discover_server_notify_boot_option_add(handler->server, opt);
+
+	/* add device to handler device array */
+	device_handler_add(handler, device);
+
+	return 0;
+
+fail:
+	talloc_free(device);
+	return 0;
+}
+
+static int handle_remove_user_event(struct device_handler *handler,
+		struct event *event)
+{
+	struct device *device = device_handler_find(handler, event->device);
+
+	if (!device)
+		return 0;
+
+	discover_server_notify_device_remove(handler->server, device);
 
-	switch (event->action) {
-	case UDEV_ACTION_ADD:
-		rc = handle_add_event(handler, event);
-		break;
+	/* remove device from handler device array */
+	device_handler_remove(handler, device);
+
+	talloc_free(device);
+	return 0;
+}
 
-	case UDEV_ACTION_REMOVE:
-		rc = handle_remove_event(handler, event);
-		break;
+typedef int (*event_handler)(struct device_handler *, struct event *);
+
+static event_handler handlers[EVENT_TYPE_MAX][EVENT_ACTION_MAX] = {
+	[EVENT_TYPE_UDEV] = {
+		[EVENT_ACTION_ADD]	= handle_add_udev_event,
+		[EVENT_ACTION_REMOVE]	= handle_remove_udev_event,
+	},
+	[EVENT_TYPE_USER] = {
+		[EVENT_ACTION_ADD]	= handle_add_user_event,
+		[EVENT_ACTION_REMOVE]	= handle_remove_user_event,
+	}
+};
+
+int device_handler_event(struct device_handler *handler,
+		struct event *event)
+{
+	if (event->type >= EVENT_TYPE_MAX ||
+			event->action >= EVENT_ACTION_MAX ||
+			!handlers[event->type][event->action]) {
+		pb_log("%s unknown type/action: %d/%d\n", __func__,
+				event->type, event->action);
+		return 0;
 	}
 
-	return rc;
+	return handlers[event->type][event->action](handler, event);
 }
 
-struct device_handler *device_handler_init(struct discover_server *server)
+struct device_handler *device_handler_init(struct discover_server *server,
+		int dry_run)
 {
 	struct device_handler *handler;
 
@@ -360,6 +425,7 @@ struct device_handler *device_handler_init(struct discover_server *server)
 	handler->devices = NULL;
 	handler->n_devices = 0;
 	handler->server = server;
+	handler->dry_run = dry_run;
 
 	list_init(&handler->contexts);
 
@@ -375,3 +441,30 @@ void device_handler_destroy(struct device_handler *handler)
 {
 	talloc_free(handler);
 }
+
+static struct boot_option *find_boot_option_by_id(
+		struct device_handler *handler, const char *id)
+{
+	unsigned int i;
+
+	for (i = 0; i < handler->n_devices; i++) {
+		struct device *dev = handler->devices[i];
+		struct boot_option *opt;
+
+		list_for_each_entry(&dev->boot_options, opt, list)
+			if (!strcmp(opt->id, id))
+				return opt;
+	}
+
+	return NULL;
+}
+
+void device_handler_boot(struct device_handler *handler,
+		struct boot_command *cmd)
+{
+	struct boot_option *opt;
+
+	opt = find_boot_option_by_id(handler, cmd->option_id);
+
+	boot(handler, opt, cmd, handler->dry_run);
+}