unsigned int prio;
};
-struct device {
- struct vlist_node node;
-
- struct probe_info *pr;
- struct mount *m;
-};
-
-static void vlist_nop_update(struct vlist_tree *tree, struct vlist_node *node_new,
- struct vlist_node *node_old);
-static int devices_cmp(const void *k1, const void *k2, void *ptr);
-
+static struct vlist_tree mounts;
static struct blob_buf b;
-static VLIST_TREE(mounts, avl_strcmp, vlist_nop_update, false, false);
-static VLIST_TREE(devices, devices_cmp, vlist_nop_update, false, false);
+static LIST_HEAD(devices);
static int anon_mount, anon_swap, auto_mount, auto_swap, check_fs;
static unsigned int delay_root;
return NULL;
}
-static void vlist_nop_update(struct vlist_tree *tree, struct vlist_node *node_new,
+static void mounts_update(struct vlist_tree *tree, struct vlist_node *node_new,
struct vlist_node *node_old)
{
- // NOTE: free on delete skipped
}
static struct uci_package * config_try_load(struct uci_context *ctx, char *path)
struct uci_element *e;
char path[64];
+ vlist_init(&mounts, avl_strcmp, mounts_update);
+
if (cfg) {
snprintf(path, sizeof(path), "%s/upper/etc/config/fstab", cfg);
pkg = config_try_load(ctx, path);
static struct probe_info* _probe_path(char *path)
{
- struct device *dev;
+ struct probe_info *pr;
char tmppath[64];
/* skip ubi device if ubiblock device is present */
if (path[5] == 'u' && path[6] == 'b' && path[7] == 'i' &&
path[8] >= '0' && path[8] <= '9' ) {
snprintf(tmppath, sizeof(tmppath), "/dev/ubiblock%s", path + 8);
- vlist_for_each_element(&devices, dev, node)
- if (!strcasecmp(dev->pr->dev, tmppath))
+ list_for_each_entry(pr, &devices, list)
+ if (!strcasecmp(pr->dev, tmppath))
return NULL;
}
int gl_flags = GLOB_NOESCAPE | GLOB_MARK;
int j;
glob_t gl;
- struct device *dev;
if (glob(path, gl_flags, NULL, &gl) < 0)
return -1;
for (j = 0; j < gl.gl_pathc; j++) {
struct probe_info *pr = _probe_path(gl.gl_pathv[j]);
- if (pr) {
- dev = malloc(sizeof(struct device));
- dev->pr = pr;
- dev->m = find_block(pr->uuid, pr->label,
- basename(pr->dev), NULL);
- vlist_add(&devices, &dev->node, dev);
- }
+ if (pr)
+ list_add_tail(&pr->list, &devices);
}
globfree(&gl);
return 0;
}
-static int devices_cmp(const void *k1, const void *k2, void *ptr)
-{
- struct device *dev1 = (struct device *)k1;
- struct device *dev2 = (struct device *)k2;
-
- if (dev1->m) {
- if (!dev2->m)
- return -1;
- if (dev1->m->type == TYPE_MOUNT && dev2->m->type == TYPE_MOUNT &&
- dev1->m->target && dev2->m->target) {
- int len1 = strlen(dev1->m->target);
- int len2 = strlen(dev2->m->target);
- if (len1 != len2)
- return len1 - len2;
- }
- } else if (dev2->m) {
- return 1;
- }
- return strcmp(dev1->pr->dev, dev2->pr->dev);
-}
-
static void cache_load(int mtd)
{
- vlist_update(&devices);
if (mtd) {
_cache_load("/dev/mtdblock*");
_cache_load("/dev/ubiblock*");
_cache_load("/dev/vd*");
_cache_load("/dev/xvd*");
_cache_load("/dev/mapper/*");
- vlist_flush(&devices);
}
-static struct device* find_block_device(char *uuid, char *label, char *path)
+static struct probe_info* find_block_info(char *uuid, char *label, char *path)
{
- struct device *dev;
+ struct probe_info *pr = NULL;
if (uuid)
- vlist_for_each_element(&devices, dev, node)
- if (dev->pr->uuid && !strcasecmp(dev->pr->uuid, uuid))
- return dev;
+ list_for_each_entry(pr, &devices, list)
+ if (pr->uuid && !strcasecmp(pr->uuid, uuid))
+ return pr;
if (label)
- vlist_for_each_element(&devices, dev, node)
- if (dev->pr->label && !strcmp(dev->pr->label, label))
- return dev;
+ list_for_each_entry(pr, &devices, list)
+ if (pr->label && !strcmp(pr->label, label))
+ return pr;
if (path)
- vlist_for_each_element(&devices, dev, node)
- if (dev->pr->dev && !strcmp(basename(dev->pr->dev), basename(path)))
- return dev;
+ list_for_each_entry(pr, &devices, list)
+ if (pr->dev && !strcmp(basename(pr->dev), basename(path)))
+ return pr;
return NULL;
}
return err;
}
-static int hotplug_call_mount(const char *action, const char *device)
-{
- pid_t pid;
- int err = 0;
-
- pid = fork();
- if (!pid) {
- char * const argv[] = { "hotplug-call", "mount", NULL };
-
- setenv("ACTION", action, 1);
- setenv("DEVICE", device, 1);
-
- execv("/sbin/hotplug-call", argv);
- exit(-1);
- } else if (pid > 0) {
- int status;
-
- pid = waitpid(pid, &status, 0);
- if (pid <= 0 || !WIFEXITED(status) || WEXITSTATUS(status)) {
- err = -ENOEXEC;
- ULOG_ERR("hotplug-call call failed\n");
- }
- } else {
- err = -errno;
- }
-
- return err;
-}
-
static int handle_mount(const char *source, const char *target,
const char *fstype, struct mount *m)
{
return err;
}
-static int blockd_notify(char *device, struct mount *m, struct probe_info *pr)
+static int blockd_notify(const char *method, char *device, struct mount *m,
+ struct probe_info *pr)
{
struct ubus_context *ctx = ubus_connect(NULL);
uint32_t id;
blobmsg_add_u32(&buf, "remove", 1);
}
- err = ubus_invoke(ctx, id, "hotplug", buf.head, NULL, NULL, 3000);
+ err = ubus_invoke(ctx, id, method, buf.head, NULL, NULL, 3000);
} else {
err = -ENOENT;
}
return err;
}
-static int mount_device(struct device *dev, int type)
+static int mount_device(struct probe_info *pr, int type)
{
struct mount *m;
- struct probe_info *pr;
struct stat st;
char _target[32];
char *target;
char *mp;
int err;
- if (!dev)
+ if (!pr)
return -1;
- pr = dev->pr;
device = basename(pr->dev);
if (!strcmp(pr->type, "swap")) {
return 0;
}
- m = dev->m;
+ m = find_block(pr->uuid, pr->label, device, NULL);
if (m && m->extroot)
return -1;
}
if (type == TYPE_HOTPLUG)
- blockd_notify(device, m, pr);
+ blockd_notify("hotplug", device, m, pr);
/* Check if device should be mounted & set the target directory */
if (m) {
handle_swapfiles(true);
if (type != TYPE_AUTOFS)
- hotplug_call_mount("add", device);
+ blockd_notify("mount", device, NULL, NULL);
return 0;
}
return 0;
if (type != TYPE_AUTOFS)
- hotplug_call_mount("remove", basename(path));
+ blockd_notify("umount", basename(path), NULL, NULL);
err = umount2(mp, MNT_DETACH);
if (err) {
if (!strcmp(action, "remove")) {
if (type == TYPE_HOTPLUG)
- blockd_notify(device, NULL, NULL);
+ blockd_notify("hotplug", device, NULL, NULL);
umount_device(path, type, true);
return -1;
cache_load(0);
- return mount_device(find_block_device(NULL, NULL, path), type);
+ return mount_device(find_block_info(NULL, NULL, path), type);
}
static int main_hotplug(int argc, char **argv)
return -1;
if (!strcmp(argv[2], "start")) {
- struct device *dev;
struct probe_info *pr;
if (config_load(NULL))
return -1;
cache_load(0);
- vlist_for_each_element(&devices, dev, node) {
+ list_for_each_entry(pr, &devices, list) {
struct mount *m;
+ char *mp;
- pr = dev->pr;
if (!strcmp(pr->type, "swap"))
continue;
- m = dev->m;
+ m = find_block(pr->uuid, pr->label, NULL, NULL);
if (m && m->extroot)
continue;
- blockd_notify(pr->dev, m, pr);
+ blockd_notify("hotplug", pr->dev, m, pr);
+ if ((!m || !m->autofs) && (mp = find_mount_point(pr->dev))) {
+ blockd_notify("mount", pr->dev, NULL, NULL);
+ free(mp);
+ }
}
- } else if (!strcmp(argv[2], "available")) {
- err = hotplug_call_mount("add", argv[3]);
- } else if (!strcmp(argv[2], "unavailable")) {
- err = hotplug_call_mount("remove", argv[3]);
} else {
if (argc < 4)
return -EINVAL;
return err;
}
-
-#else
+#endif
static int find_root_dev(char *buf, int len)
{
return -1;
}
-#endif
-
static int test_fs_support(const char *name)
{
char line[128], *p;
return rv;
}
+/**
+ * Check if mounted partition is a valid extroot
+ *
+ * @path target mount point
+ *
+ * Valid extroot partition has to contain /etc/.extroot-uuid with UUID of root
+ * device. This function reads UUID and verifies it OR writes UUID to
+ * .extroot-uuid if it doesn't exist yet (first extroot usage).
+ */
static int check_extroot(char *path)
{
- struct device *dev;
- struct probe_info *pr;
+ struct probe_info *pr = NULL;
+ struct probe_info *tmp;
+ struct stat s;
+ char uuid[64] = { 0 };
char devpath[32];
+ char tag[64];
+ FILE *fp;
+ int err;
+ err = find_block_mtd("\"rootfs\"", devpath, sizeof(devpath));
#ifdef UBIFS_EXTROOT
- if (find_block_mtd("\"rootfs\"", devpath, sizeof(devpath))) {
- int err = -1;
+ if (err) {
libubi_t libubi;
libubi = libubi_open();
err = find_block_ubi_RO(libubi, "rootfs", devpath, sizeof(devpath));
libubi_close(libubi);
- if (err)
- return -1;
}
-#else
- if (find_block_mtd("\"rootfs\"", devpath, sizeof(devpath))) {
- if (find_root_dev(devpath, sizeof(devpath))) {
- ULOG_ERR("extroot: unable to determine root device\n");
- return -1;
+#endif
+ if (err) {
+ err = find_root_dev(devpath, sizeof(devpath));
+ }
+ if (err) {
+ ULOG_ERR("extroot: unable to determine root device\n");
+ return -1;
+ }
+
+ /* Find root device probe_info so we know its UUID */
+ list_for_each_entry(tmp, &devices, list) {
+ if (!strcmp(tmp->dev, devpath)) {
+ pr = tmp;
+ break;
}
}
-#endif
+ if (!pr) {
+ ULOG_ERR("extroot: unable to lookup root device %s\n", devpath);
+ return -1;
+ }
- vlist_for_each_element(&devices, dev, node) {
- pr = dev->pr;
- if (!strcmp(pr->dev, devpath)) {
- struct stat s;
- FILE *fp = NULL;
- char tag[64];
- char uuid[64] = { 0 };
-
- snprintf(tag, sizeof(tag), "%s/etc", path);
- if (stat(tag, &s))
- mkdir_p(tag);
-
- snprintf(tag, sizeof(tag), "%s/etc/.extroot-uuid", path);
- if (stat(tag, &s)) {
- fp = fopen(tag, "w+");
- if (!fp) {
- ULOG_ERR("extroot: failed to write UUID to %s: %d (%m)\n",
- tag, errno);
- /* return 0 to continue boot regardless of error */
- return 0;
- }
- fputs(pr->uuid, fp);
- fclose(fp);
- return 0;
- }
+ snprintf(tag, sizeof(tag), "%s/etc", path);
+ if (stat(tag, &s))
+ mkdir_p(tag);
- fp = fopen(tag, "r");
- if (!fp) {
- ULOG_ERR("extroot: failed to read UUID from %s: %d (%m)\n",
- tag, errno);
- return -1;
- }
+ snprintf(tag, sizeof(tag), "%s/etc/.extroot-uuid", path);
+ if (stat(tag, &s)) {
+ fp = fopen(tag, "w+");
+ if (!fp) {
+ ULOG_ERR("extroot: failed to write UUID to %s: %d (%m)\n",
+ tag, errno);
+ /* return 0 to continue boot regardless of error */
+ return 0;
+ }
+ fputs(pr->uuid, fp);
+ fclose(fp);
+ return 0;
+ }
- if (!fgets(uuid, sizeof(uuid), fp))
- ULOG_ERR("extroot: failed to read UUID from %s: %d (%m)\n",
- tag, errno);
- fclose(fp);
+ fp = fopen(tag, "r");
+ if (!fp) {
+ ULOG_ERR("extroot: failed to read UUID from %s: %d (%m)\n", tag,
+ errno);
+ return -1;
+ }
- if (*uuid && !strcasecmp(uuid, pr->uuid))
- return 0;
+ if (!fgets(uuid, sizeof(uuid), fp))
+ ULOG_ERR("extroot: failed to read UUID from %s: %d (%m)\n", tag,
+ errno);
+ fclose(fp);
- ULOG_ERR("extroot: UUID mismatch (root: %s, %s: %s)\n",
- pr->uuid, basename(path), uuid);
- return -1;
- }
- }
+ if (*uuid && !strcasecmp(uuid, pr->uuid))
+ return 0;
- ULOG_ERR("extroot: unable to lookup root device %s\n", devpath);
+ ULOG_ERR("extroot: UUID mismatch (root: %s, %s: %s)\n", pr->uuid,
+ basename(path), uuid);
return -1;
}
char overlay[] = "/tmp/extroot/overlay";
char mnt[] = "/tmp/extroot/mnt";
char *path = mnt;
- struct device *dev;
struct probe_info *pr;
struct mount *m;
int err = -1;
}
/* Find block device pointed by the mount config */
- dev = find_block_device(m->uuid, m->label, m->device);
+ pr = find_block_info(m->uuid, m->label, m->device);
- if (!dev && delay_root){
+ if (!pr && delay_root){
ULOG_INFO("extroot: device not present, retrying in %u seconds\n", delay_root);
sleep(delay_root);
make_devs();
cache_load(1);
- dev = find_block_device(m->uuid, m->label, m->device);
+ pr = find_block_info(m->uuid, m->label, m->device);
}
- if (dev) {
- pr = dev->pr;
+ if (pr) {
if (strncmp(pr->type, "ext", 3) &&
strncmp(pr->type, "f2fs", 4) &&
strncmp(pr->type, "btrfs", 5) &&
return err;
}
+/**
+ * Look for extroot config and mount it if present
+ *
+ * Look for /etc/config/fstab on all supported partitions and use it for
+ * mounting extroot if specified.
+ */
static int main_extroot(int argc, char **argv)
{
+ struct probe_info *pr;
char blkdev_path[32] = { 0 };
int err = -1;
#ifdef UBIFS_EXTROOT
/* Start with looking for MTD partition */
find_block_mtd("\"rootfs_data\"", blkdev_path, sizeof(blkdev_path));
if (blkdev_path[0]) {
- struct device *dev = find_block_device(NULL, NULL, blkdev_path);
- if (dev && !strcmp(dev->pr->type, "jffs2")) {
+ pr = find_block_info(NULL, NULL, blkdev_path);
+ if (pr && !strcmp(pr->type, "jffs2")) {
char cfg[] = "/tmp/jffs_cfg";
/*
}
#endif
+ /* As a last resort look for /etc/config/fstab on "rootfs" partition */
return mount_extroot(NULL);
}
static int main_mount(int argc, char **argv)
{
- struct device *dev;
+ struct probe_info *pr;
if (config_load(NULL))
return -1;
cache_load(1);
- vlist_for_each_element(&devices, dev, node)
- mount_device(dev, TYPE_DEV);
+ list_for_each_entry(pr, &devices, list)
+ mount_device(pr, TYPE_DEV);
handle_swapfiles(true);
static int main_umount(int argc, char **argv)
{
- struct device *dev;
struct probe_info *pr;
bool all = false;
if (argc == 3)
all = !strcmp(argv[2], "-a");
- vlist_for_each_element_reverse(&devices, dev, node) {
+ list_for_each_entry(pr, &devices, list) {
struct mount *m;
- pr = dev->pr;
if (!strcmp(pr->type, "swap"))
continue;
- m = dev->m;
+ m = find_block(pr->uuid, pr->label, basename(pr->dev), NULL);
if (m && m->extroot)
continue;
static int main_detect(int argc, char **argv)
{
- struct device *dev;
+ struct probe_info *pr;
cache_load(0);
printf("config 'global'\n");
printf("\toption\tauto_mount\t'1'\n");
printf("\toption\tdelay_root\t'5'\n");
printf("\toption\tcheck_fs\t'0'\n\n");
- vlist_for_each_element(&devices, dev, node)
- print_block_uci(dev->pr);
+ list_for_each_entry(pr, &devices, list)
+ print_block_uci(pr);
return 0;
}
static int main_info(int argc, char **argv)
{
int i;
- struct device *dev;
+ struct probe_info *pr;
cache_load(1);
if (argc == 2) {
- vlist_for_each_element(&devices, dev, node)
- print_block_info(dev->pr);
+ list_for_each_entry(pr, &devices, list)
+ print_block_info(pr);
return 0;
};
ULOG_ERR("%s is not a block device\n", argv[i]);
continue;
}
- dev = find_block_device(NULL, NULL, argv[i]);
- if (dev)
- print_block_info(dev->pr);
+ pr = find_block_info(NULL, NULL, argv[i]);
+ if (pr)
+ print_block_info(pr);
}
return 0;
FILE *fp;
char *lineptr;
size_t s;
- struct device *dev;
struct probe_info *pr;
int flags = 0;
int pri;
return 0;
case 'a':
cache_load(0);
- vlist_for_each_element(&devices, dev, node) {
- pr = dev->pr;
+ list_for_each_entry(pr, &devices, list) {
if (strcmp(pr->type, "swap"))
continue;
if (swapon(pr->dev, 0))
projects / project / fstools.git / blobdiff