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block: support extroot and overlay mounts by device
[project/ubox.git]
/
mount_root.c
diff --git
a/mount_root.c
b/mount_root.c
index
f1474f0
..
8868e40
100644
(file)
--- a/
mount_root.c
+++ b/
mount_root.c
@@
-109,12
+109,16
@@
static char* find_mount(char *mp)
while (fgets(line, sizeof(line), fp)) {
char *s, *t = strstr(line, " ");
while (fgets(line, sizeof(line), fp)) {
char *s, *t = strstr(line, " ");
- if (!t)
+ if (!t) {
+ fclose(fp);
return NULL;
return NULL;
+ }
t++;
s = strstr(t, " ");
t++;
s = strstr(t, " ");
- if (!s)
+ if (!s) {
+ fclose(fp);
return NULL;
return NULL;
+ }
*s = '\0';
if (!strcmp(t, mp)) {
*s = '\0';
if (!strcmp(t, mp)) {
@@
-143,13
+147,16
@@
static char* find_mount_point(char *block, char *fs)
char *p = &line[len + 1];
char *t = strstr(p, " ");
char *p = &line[len + 1];
char *t = strstr(p, " ");
- if (!t)
+ if (!t) {
+ fclose(fp);
return NULL;
return NULL;
+ }
*t = '\0';
t++;
if (fs && strncmp(t, fs, strlen(fs))) {
*t = '\0';
t++;
if (fs && strncmp(t, fs, strlen(fs))) {
+ fclose(fp);
ERROR("block is mounted with wrong fs\n");
return NULL;
}
ERROR("block is mounted with wrong fs\n");
return NULL;
}
@@
-423,6
+430,9
@@
static int switch2jffs(void)
{
char mtd[32];
{
char mtd[32];
+ if (!find_mtd_block("rootfs_patches", mtd, sizeof(mtd)))
+ return 0;
+
if (find_mtd_block("rootfs_data", mtd, sizeof(mtd))) {
ERROR("no rootfs_data was found\n");
return -1;
if (find_mtd_block("rootfs_data", mtd, sizeof(mtd))) {
ERROR("no rootfs_data was found\n");
return -1;
@@
-579,7
+589,7
@@
static int main_jffs2reset(int argc, char **argv)
mp = find_mount_point(mtd, "jffs2");
if (mp) {
mp = find_mount_point(mtd, "jffs2");
if (mp) {
- LOG("%s is mounted as %s, only er
e
asing files\n", mtd, mp);
+ LOG("%s is mounted as %s, only erasing files\n", mtd, mp);
foreachdir(mp, handle_rmdir);
mount(mp, "/", NULL, MS_REMOUNT, 0);
} else {
foreachdir(mp, handle_rmdir);
mount(mp, "/", NULL, MS_REMOUNT, 0);
} else {
@@
-763,7
+773,9
@@
int main(int argc, char **argv)
if (!getenv("PREINIT"))
return -1;
if (!getenv("PREINIT"))
return -1;
- if (find_mtd_char("rootfs_data", mtd, sizeof(mtd))) {
+ if (!find_mtd_block("rootfs_patches", mtd, sizeof(mtd))) {
+ ramoverlay();
+ } else if (find_mtd_char("rootfs_data", mtd, sizeof(mtd))) {
if (!find_mtd_char("rootfs", mtd, sizeof(mtd)))
mtd_unlock(mtd);
LOG("mounting /dev/root\n");
if (!find_mtd_char("rootfs", mtd, sizeof(mtd)))
mtd_unlock(mtd);
LOG("mounting /dev/root\n");