X-Git-Url: http://git.archive.openwrt.org/?p=project%2Ffstools.git;a=blobdiff_plain;f=backend%2Fjffs2.c;fp=backend%2Fjffs2.c;h=0000000000000000000000000000000000000000;hp=09c66cf3dfea2ee10a7b03606aa4d135eed821d8;hb=8603b6f2e7782437f3af16778b231ec9c1045f09;hpb=dbd3dc58391b750d9ad8403e89f79457bd49dc90

diff --git a/backend/jffs2.c b/backend/jffs2.c
deleted file mode 100644
index 09c66cf..0000000
--- a/backend/jffs2.c
+++ /dev/null
@@ -1,388 +0,0 @@
-/*
- * Copyright (C) 2014 John Crispin <blogic@openwrt.org>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU Lesser General Public License version 2.1
- * as published by the Free Software Foundation
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- */
-
-#include <sys/stat.h>
-#include <sys/types.h>
-#include <sys/mount.h>
-
-#include <asm/byteorder.h>
-
-#include <errno.h>
-#include <string.h>
-#include <stdio.h>
-#include <unistd.h>
-#include <stdlib.h>
-#include <glob.h>
-#include <errno.h>
-#include <dirent.h>
-#include <fcntl.h>
-
-#include "../fs-state.h"
-#include "../driver/volume.h"
-
-#define SWITCH_JFFS2 "/tmp/.switch_jffs2"
-
-void
-foreachdir(const char *dir, int (*cb)(const char*))
-{
-	char globdir[256];
-	glob_t gl;
-	int j;
-
-	if (dir[strlen(dir) - 1] == '/')
-		snprintf(globdir, 256, "%s*", dir);
-	else
-		snprintf(globdir, 256, "%s/*", dir);
-
-	if (!glob(globdir, GLOB_NOESCAPE | GLOB_MARK | GLOB_ONLYDIR, NULL, &gl))
-		for (j = 0; j < gl.gl_pathc; j++)
-			foreachdir(gl.gl_pathv[j], cb);
-
-	cb(dir);
-}
-
-static int
-jffs2_mount(void)
-{
-	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;
-	}
-
-	return volume_init(v);
-}
-
-static int
-switch2jffs(void)
-{
-	struct volume *v = volume_find("rootfs_data");
-	struct stat s;
-	int ret;
-
-	if (!stat(SWITCH_JFFS2, &s)) {
-		fprintf(stderr, "jffs2 switch already running\n");
-		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");
-	if (ret) {
-		fprintf(stderr, "failed - mount -t jffs2 %s /rom/overlay: %s\n", v->blk, strerror(errno));
-		return -1;
-	}
-
-	if (mount("none", "/", NULL, MS_NOATIME | MS_REMOUNT, 0)) {
-		fprintf(stderr, "failed - mount -o remount,ro none: %s\n", strerror(errno));
-		return -1;
-	}
-
-	system("cp -a /tmp/root/* /rom/overlay");
-
-	if (pivot("/rom", "/mnt")) {
-		fprintf(stderr, "failed - pivot /rom /mnt: %s\n", strerror(errno));
-		return -1;
-	}
-
-	if (mount_move("/mnt", "/tmp/root", "")) {
-		fprintf(stderr, "failed - mount -o move /mnt /tmp/root %s\n", strerror(errno));
-		return -1;
-	}
-
-	return fopivot("/overlay", "/rom");
-}
-
-int
-handle_whiteout(const char *dir)
-{
-	struct stat s;
-	char link[256];
-	ssize_t sz;
-	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_ISLNK(s.st_mode)) {
-			sz = readlink(file, link, sizeof(link) - 1);
-			if (sz > 0) {
-				char *orig;
-
-				link[sz] = '\0';
-				orig = strstr(&file[1], "/");
-				if (orig && !strcmp(link, "(overlay-whiteout)"))
-					unlink(orig);
-			}
-		}
-		free(namelist[n]);
-	}
-	free(namelist);
-
-	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)
-{
-	struct volume *v;
-	char *mp;
-	int ret = -1;
-
-	if (find_overlay_mount("overlayfs:/tmp/root"))
-		return -1;
-
-	if (find_filesystem("overlay")) {
-		fprintf(stderr, "overlayfs not found\n");
-		return ret;
-	}
-
-	v = volume_find("rootfs_data");
-	mp = find_mount_point(v->blk, NULL);
-	if (mp) {
-		fprintf(stderr, "rootfs_data:%s is already mounted as %s\n", v->blk, mp);
-		return -1;
-	}
-
-	switch (volume_identify(v)) {
-	case FS_NONE:
-		fprintf(stderr, "no jffs2 marker found\n");
-		/* fall through */
-
-	case FS_DEADCODE:
-		ret = switch2jffs();
-		if (!ret) {
-			fprintf(stderr, "doing fo cleanup\n");
-			umount2("/tmp/root", MNT_DETACH);
-			foreachdir("/overlay/", handle_whiteout);
-		}
-		break;
-
-	case FS_JFFS2:
-		ret = jffs2_mount();
-		if (ret)
-			break;
-		if (mount_move("/tmp", "", "/overlay") || fopivot("/overlay", "/rom")) {
-			fprintf(stderr, "switching to jffs2 failed\n");
-			ret = -1;
-		}
-		break;
-	}
-
-	return ret;
-}
-
-static int overlay_mount_fs(void)
-{
-	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;
-	}
-
-	volume_init(v);
-
-	return -1;
-}
-
-static int overlay_mount(void)
-{
-	struct volume *v = volume_find("rootfs_data");;
-	char *mp;
-
-	if (!v)
-		return -1;
-
-	mp = find_mount_point(v->blk, NULL);
-	if (mp) {
-		fprintf(stderr, "rootfs_data:%s is already mounted as %s\n", v->blk, mp);
-		return -1;
-	}
-
-	overlay_mount_fs();
-
-	extroot_prefix = "/tmp/overlay";
-	if (!backend_mount("extroot")) {
-		fprintf(stderr, "fs-state: switched to extroot\n");
-		return 0;
-	}
-
-	fprintf(stderr, "switching to jffs2\n");
-	if (mount_move("/tmp", "", "/overlay") || fopivot("/overlay", "/rom")) {
-		fprintf(stderr, "switching to jffs2 failed - fallback to ramoverlay\n");
-		return ramoverlay();
-	}
-
-	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);