#include <dirent.h>
#include <fcntl.h>
-#include "../fs-state.h"
+#include "libfstools.h"
#include "volume.h"
#define SWITCH_JFFS2 "/tmp/.switch_jffs2"
}
static int
-jffs2_mount(void)
+jffs2_mount(struct volume *v)
{
- struct volume *v;
-
if (mkdir("/tmp/overlay", 0755)) {
fprintf(stderr, "failed to mkdir /tmp/overlay: %s\n", strerror(errno));
return -1;
}
- v = volume_find("rootfs_data");
- if (!v) {
- fprintf(stderr, "rootfs_data does not exist\n");
- return -1;
- }
-
if (mount(v->blk, "/tmp/overlay", "jffs2", MS_NOATIME, NULL)) {
fprintf(stderr, "failed to mount -t jffs2 %s /tmp/overlay: %s\n", v->blk, strerror(errno));
return -1;
}
static int
-switch2jffs(void)
+switch2jffs(struct volume *v)
{
- struct volume *v = volume_find("rootfs_data");
struct stat s;
int ret;
return -1;
}
- if (!v) {
- fprintf(stderr, "no rootfs_data was found\n");
- return -1;
- }
-
creat("/tmp/.switch_jffs2", 0600);
ret = mount(v->blk, "/rom/overlay", "jffs2", MS_NOATIME, NULL);
unlink("/tmp/.switch_jffs2");
return 0;
}
-static int
-ask_user(int argc, char **argv)
-{
- if ((argc < 2) || strcmp(argv[1], "-y")) {
- fprintf(stderr, "This will erase all settings and remove any installed packages. Are you sure? [N/y]\n");
- if (getchar() != 'y')
- return -1;
- }
- return 0;
-
-}
-
-static int
-handle_rmdir(const char *dir)
-{
- struct stat s;
- struct dirent **namelist;
- int n;
-
- n = scandir(dir, &namelist, NULL, NULL);
-
- if (n < 1)
- return -1;
-
- while (n--) {
- char file[256];
-
- snprintf(file, sizeof(file), "%s%s", dir, namelist[n]->d_name);
- if (!lstat(file, &s) && !S_ISDIR(s.st_mode))
- unlink(file);
- free(namelist[n]);
- }
- free(namelist);
-
- rmdir(dir);
-
- return 0;
-}
-
-static int
-jffs2_reset(int argc, char **argv)
-{
- struct volume *v;
- char *mp;
-
- if (ask_user(argc, argv))
- return -1;
-
- if (find_filesystem("overlay")) {
- fprintf(stderr, "overlayfs not found\n");
- return -1;
- }
-
- v = volume_find("rootfs_data");
- if (!v) {
- fprintf(stderr, "no rootfs_data was found\n");
- return -1;
- }
-
- mp = find_mount_point(v->blk, "jffs2");
- if (mp) {
- fprintf(stderr, "%s is mounted as %s, only erasing files\n", v->blk, mp);
- foreachdir(mp, handle_rmdir);
- mount(mp, "/", NULL, MS_REMOUNT, 0);
- } else {
- fprintf(stderr, "%s is not mounted, erasing it\n", v->blk);
- volume_erase_all(v);
- }
-
- return 0;
-}
-
-static int
-jffs2_mark(int argc, char **argv)
-{
- __u32 deadc0de = __cpu_to_be32(0xdeadc0de);
- struct volume *v;
- size_t sz;
- int fd;
-
- if (ask_user(argc, argv))
- return -1;
-
- v = volume_find("rootfs_data");
- if (!v) {
- fprintf(stderr, "no rootfs_data was found\n");
- return -1;
- }
-
- fd = open(v->blk, O_WRONLY);
- fprintf(stderr, "%s - marking with deadc0de\n", v->blk);
- if (!fd) {
- fprintf(stderr, "opening %s failed\n", v->blk);
- return -1;
- }
-
- sz = write(fd, &deadc0de, sizeof(deadc0de));
- close(fd);
-
- if (sz != 1) {
- fprintf(stderr, "writing %s failed: %s\n", v->blk, strerror(errno));
- return -1;
- }
-
- return 0;
-}
-
int
-jffs2_switch(int argc, char **argv)
+jffs2_switch(struct volume *v)
{
- struct volume *v;
char *mp;
int ret = -1;
- if (find_overlay_mount("overlayfs:/tmp/root"))
+ if (find_mount_overlay("overlayfs:/tmp/root"))
return -1;
if (find_filesystem("overlay")) {
return ret;
}
- v = volume_find("rootfs_data");
- mp = find_mount_point(v->blk, NULL);
+ mp = find_mount_point(v->blk, 0);
if (mp) {
fprintf(stderr, "rootfs_data:%s is already mounted as %s\n", v->blk, mp);
return -1;
/* fall through */
case FS_DEADCODE:
- ret = switch2jffs();
+ ret = switch2jffs(v);
if (!ret) {
fprintf(stderr, "doing fo cleanup\n");
umount2("/tmp/root", MNT_DETACH);
break;
case FS_JFFS2:
- ret = jffs2_mount();
+ ret = jffs2_mount(v);
if (ret)
break;
if (mount_move("/tmp", "", "/overlay") || fopivot("/overlay", "/rom")) {
return ret;
}
-static int overlay_mount_fs(void)
+static int mount_overlay_fs(struct volume *v)
{
- struct volume *v;
-
if (mkdir("/tmp/overlay", 0755)) {
fprintf(stderr, "failed to mkdir /tmp/overlay: %s\n", strerror(errno));
return -1;
}
- v = volume_find("rootfs_data");
- if (!v) {
- fprintf(stderr, "rootfs_data does not exist\n");
- return -1;
- }
-
if (mount(v->blk, "/tmp/overlay", "jffs2", MS_NOATIME, NULL)) {
fprintf(stderr, "failed to mount -t jffs2 %s /tmp/overlay: %s\n",
v->blk, strerror(errno));
return -1;
}
-static int overlay_mount(void)
+int mount_overlay(struct volume *v)
{
- struct volume *v = volume_find("rootfs_data");;
char *mp;
- if (!v)
- return -1;
-
- mp = find_mount_point(v->blk, NULL);
+ mp = find_mount_point(v->blk, 0);
if (mp) {
fprintf(stderr, "rootfs_data:%s is already mounted as %s\n", v->blk, mp);
return -1;
}
- overlay_mount_fs();
+ mount_overlay_fs(v);
extroot_prefix = "/tmp/overlay";
- if (!backend_mount("extroot")) {
+ if (!mount_extroot()) {
fprintf(stderr, "fs-state: switched to extroot\n");
return 0;
}
return -1;
}
-
-static struct backend_handler jffs2_handlers[] = {
-{
- .name = "jffs2reset",
- .cli = jffs2_reset,
-}, {
- .name = "jffs2mark",
- .cli = jffs2_mark,
-}};
-
-static struct backend overlay_backend = {
- .name = "overlay",
- .num_handlers = ARRAY_SIZE(jffs2_handlers),
- .handlers = jffs2_handlers,
- .mount = overlay_mount,
-};
-BACKEND(overlay_backend);
projects / project / fstools.git / blobdiff