2 * Copyright (C) 2014 John Crispin <blogic@openwrt.org>
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU Lesser General Public License version 2.1
6 * as published by the Free Software Foundation
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
11 * GNU General Public License for more details.
14 #include <sys/mount.h>
15 #include <sys/types.h>
25 #include "libfstools/libfstools.h"
26 #include "libfstools/volume.h"
29 handle_rmdir(const char *dir
)
42 while ((dt
= readdir(d
)) != NULL
) {
43 if (fstatat(fd
, dt
->d_name
, &st
, AT_SYMLINK_NOFOLLOW
) || S_ISDIR(st
.st_mode
))
46 unlinkat(fd
, dt
->d_name
, 0);
56 ask_user(int argc
, char **argv
)
58 if ((argc
< 2) || strcmp(argv
[1], "-y")) {
59 fprintf(stderr
, "This will erase all settings and remove any installed packages. Are you sure? [N/y]\n");
68 jffs2_reset(int argc
, char **argv
)
73 if (ask_user(argc
, argv
))
76 if (find_filesystem("overlay")) {
77 fprintf(stderr
, "overlayfs not found\n");
81 v
= volume_find("rootfs_data");
83 fprintf(stderr
, "no rootfs_data was found\n");
87 mp
= find_mount_point(v
->blk
, 1);
89 fprintf(stderr
, "%s is mounted as %s, only erasing files\n", v
->blk
, mp
);
90 foreachdir(mp
, handle_rmdir
);
91 mount(mp
, "/", NULL
, MS_REMOUNT
, 0);
93 fprintf(stderr
, "%s is not mounted, erasing it\n", v
->blk
);
101 jffs2_mark(int argc
, char **argv
)
103 __u32 deadc0de
= __cpu_to_be32(0xdeadc0de);
108 if (ask_user(argc
, argv
))
111 v
= volume_find("rootfs_data");
113 fprintf(stderr
, "no rootfs_data was found\n");
117 fd
= open(v
->blk
, O_WRONLY
);
118 fprintf(stderr
, "%s - marking with deadc0de\n", v
->blk
);
120 fprintf(stderr
, "opening %s failed\n", v
->blk
);
124 sz
= write(fd
, &deadc0de
, sizeof(deadc0de
));
128 fprintf(stderr
, "writing %s failed: %s\n", v
->blk
, strerror(errno
));
135 int main(int argc
, char **argv
)
137 if (!strcmp(*argv
, "jffs2mark"))
138 return jffs2_mark(argc
, argv
);
139 return jffs2_reset(argc
, argv
);