+#include <assert.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#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;
- int n_devices;
+ struct device **devices;
+ unsigned int n_devices;
struct list contexts;
};
-struct mount_map {
- char *device_path;
- char *mount_point;
-};
-
-
-static struct boot_option options[] = {
- {
- .id = "1.1",
- .name = "meep one",
- .description = "meep description one",
- .icon_file = "meep.one.png",
- .boot_args = "root=/dev/sda1",
- },
-};
-
-static struct device device = {
- .id = "1",
- .name = "meep",
- .description = "meep description",
- .icon_file = "meep.png",
-};
-
-int device_handler_get_current_devices(
- struct device_handler *handler __attribute__((unused)),
- const struct device **devices)
+/**
+ * device_handler_add - Add a device to the handler device array.
+ */
+static void device_handler_add(struct device_handler *handler,
+ struct device *device)
{
- *devices = &device;
- return 1;
+ handler->n_devices++;
+ handler->devices = talloc_realloc(handler, handler->devices,
+ struct device *, handler->n_devices);
+ handler->devices[handler->n_devices - 1] = device;
}
-static int mkdir_recursive(const char *dir)
-{
- struct stat statbuf;
- char *str, *sep;
- int mode = 0755;
-
- if (!*dir)
- return 0;
-
- if (!stat(dir, &statbuf)) {
- if (!S_ISDIR(statbuf.st_mode)) {
- pb_log("%s: %s exists, but isn't a directory\n",
- __func__, dir);
- return -1;
- }
- return 0;
- }
-
- str = talloc_strdup(NULL, dir);
- sep = strchr(*str == '/' ? str + 1 : str, '/');
-
- while (1) {
-
- /* terminate the path at sep */
- if (sep)
- *sep = '\0';
+/**
+ * device_handler_remove - Remove a device from the handler device array.
+ */
- if (mkdir(str, mode) && errno != EEXIST) {
- pb_log("mkdir(%s): %s\n", str, strerror(errno));
- return -1;
- }
+static void device_handler_remove(struct device_handler *handler,
+ struct device *device)
+{
+ unsigned int i;
- if (!sep)
+ for (i = 0; i < handler->n_devices; i++)
+ if (handler->devices[i] == device)
break;
- /* reset dir to the full path */
- strcpy(str, dir);
- sep = strchr(sep + 1, '/');
+ if (i == handler->n_devices) {
+ assert(0 && "unknown device");
+ return;
}
- talloc_free(str);
-
- return 0;
+ handler->n_devices--;
+ memmove(&handler->devices[i], &handler->devices[i + 1],
+ (handler->n_devices - i) * sizeof(handler->devices[0]));
+ handler->devices = talloc_realloc(handler, handler->devices,
+ struct device *, handler->n_devices);
}
-static int rmdir_recursive(const char *base, const char *dir)
+/**
+ * device_handler_find - Find a handler device by id.
+ */
+
+static struct device *device_handler_find(struct device_handler *handler,
+ const char *id)
{
- char *cur, *pos;
+ unsigned int i;
- /* sanity check: make sure that dir is within base */
- if (strncmp(base, dir, strlen(base)))
- return -1;
+ assert(id);
- cur = talloc_strdup(NULL, dir);
+ for (i = 0; i < handler->n_devices; i++)
+ if (handler->devices[i]->id
+ && streq(handler->devices[i]->id, id))
+ return handler->devices[i];
- while (strcmp(base, dir)) {
+ pb_log("%s: unknown device: %s\n", __func__, id);
+ return NULL;
+}
- rmdir(dir);
+/**
+ * device_handler_get_device_count - Get the count of current handler devices.
+ */
- /* null-terminate at the last slash */
- pos = strrchr(dir, '/');
- if (!pos)
- break;
+int device_handler_get_device_count(const struct device_handler *handler)
+{
+ return handler->n_devices;
+}
- *pos = '\0';
- }
+/**
+ * device_handler_get_device - Get a handler device by index.
+ */
- talloc_free(cur);
+const struct device *device_handler_get_device(
+ const struct device_handler *handler, unsigned int index)
+{
+ if (index >= handler->n_devices) {
+ assert(0 && "bad index");
+ return NULL;
+ }
- return 0;
+ return handler->devices[index];
}
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;
dir = join_paths(ctx, mount_base(), link->dir);
path = join_paths(ctx, dir, value);
- if (!mkdir_recursive(dir)) {
+ if (!pb_mkdir_recursive(dir)) {
unlink(path);
if (symlink(ctx->mount_path, path)) {
pb_log("symlink(%s,%s): %s\n",
static int mount_device(struct discover_context *ctx)
{
const char *mountpoint;
- int status;
- pid_t pid;
+ const char *argv[6];
if (!ctx->mount_path) {
mountpoint = mountpoint_for_device(ctx->device_path);
ctx->mount_path = talloc_strdup(ctx, mountpoint);
}
- if (mkdir_recursive(ctx->mount_path))
+ if (pb_mkdir_recursive(ctx->mount_path))
pb_log("couldn't create mount directory %s: %s\n",
ctx->mount_path, strerror(errno));
- pid = fork();
- if (pid == -1) {
- pb_log("%s: fork failed: %s\n", __func__, strerror(errno));
- goto out_rmdir;
- }
+ 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 (pid == 0) {
- execl(MOUNT_BIN, MOUNT_BIN, ctx->device_path, ctx->mount_path,
- "-o", "ro", NULL);
- exit(EXIT_FAILURE);
- }
+ if (pb_run_cmd(argv, 1, 0)) {
- if (waitpid(pid, &status, 0) == -1) {
- pb_log("%s: waitpid failed: %s\n", __func__,
- strerror(errno));
- goto out_rmdir;
- }
+ /* 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 (!WIFEXITED(status) || WEXITSTATUS(status) != 0) {
- pb_log("%s: mount failed (%d): %s\n", __func__,
- WEXITSTATUS(status), ctx->event->device);
- goto out_rmdir;
+ if (pb_run_cmd(argv, 1, 0))
+ goto out_rmdir;
}
setup_device_links(ctx);
return 0;
out_rmdir:
- rmdir_recursive(mount_base(), ctx->mount_path);
+ pb_rmdir_recursive(mount_base(), ctx->mount_path);
return -1;
}
}
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);
}
if (!WIFEXITED(status) || WEXITSTATUS(status) != 0)
return -1;
- rmdir_recursive(mount_base(), ctx->mount_path);
+ pb_rmdir_recursive(mount_base(), ctx->mount_path);
return 0;
}
return NULL;
}
-
static int destroy_context(void *arg)
{
struct discover_context *ctx = 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;
const char *devname;
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);
/* run the parsers */
iterate_parsers(ctx);
+ /* add device to handler device array */
+ device_handler_add(handler, ctx->device);
+
discover_server_notify_add(handler->server, ctx->device);
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;
discover_server_notify_remove(handler->server, ctx->device);
+ /* remove device from handler device array */
+ device_handler_remove(handler, ctx->device);
+
talloc_free(ctx);
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 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_add(handler->server, device);
- switch (event->action) {
- case UDEV_ACTION_ADD:
- rc = handle_add_event(handler, event);
- break;
+ /* add device to handler device array */
+ device_handler_add(handler, device);
- case UDEV_ACTION_REMOVE:
- rc = handle_remove_event(handler, event);
- break;
+ 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_remove(handler->server, device);
+
+ /* remove device from handler device array */
+ device_handler_remove(handler, device);
+
+ talloc_free(device);
+ return 0;
+}
+
+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,
}
+};
- return rc;
+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 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;
- unsigned int i;
handler = talloc(NULL, struct device_handler);
handler->devices = NULL;
handler->n_devices = 0;
handler->server = server;
+ handler->dry_run = dry_run;
list_init(&handler->contexts);
/* set up our mount point base */
- mkdir_recursive(mount_base());
-
- /* setup out test objects */
- list_init(&device.boot_options);
-
- for (i = 0; i < sizeof(options) / sizeof(options[0]); i++)
- list_add(&device.boot_options, &options[i].list);
+ pb_mkdir_recursive(mount_base());
parser_init();
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);
+}
projects / petitboot / blobdiff