diff options
Diffstat (limited to 'ext4_utils/setup_fs.c')
-rw-r--r-- | ext4_utils/setup_fs.c | 79 |
1 files changed, 79 insertions, 0 deletions
diff --git a/ext4_utils/setup_fs.c b/ext4_utils/setup_fs.c new file mode 100644 index 00000000..380c0df8 --- /dev/null +++ b/ext4_utils/setup_fs.c @@ -0,0 +1,79 @@ +#include <stdio.h> +#include <stdlib.h> +#include <string.h> +#include <unistd.h> +#include <sys/reboot.h> +#include <sys/wait.h> +#include <cutils/android_reboot.h> +#include <cutils/partition_utils.h> + +const char *mkfs = "/system/bin/make_ext4fs"; + +int setup_fs(const char *blockdev) +{ + char buf[256], path[128]; + pid_t child; + int status, n; + + /* we might be looking at an indirect reference */ + n = readlink(blockdev, path, sizeof(path) - 1); + if (n > 0) { + path[n] = 0; + if (!memcmp(path, "/dev/block/", 11)) + blockdev = path + 11; + } + + if (strchr(blockdev,'/')) { + fprintf(stderr,"not a block device name: %s\n", blockdev); + return 0; + } + + sprintf(buf,"/sys/fs/ext4/%s", blockdev); + if (access(buf, F_OK) == 0) { + fprintf(stderr,"device %s already has a filesystem\n", blockdev); + return 0; + } + sprintf(buf,"/dev/block/%s", blockdev); + + if (!partition_wiped(buf)) { + fprintf(stderr,"device %s not wiped, probably encrypted, not wiping\n", blockdev); + return 0; + } + + fprintf(stderr,"+++\n"); + + child = fork(); + if (child < 0) { + fprintf(stderr,"error: fork failed\n"); + return 0; + } + if (child == 0) { + execl(mkfs, mkfs, buf, NULL); + exit(-1); + } + + while (waitpid(-1, &status, 0) != child) ; + + fprintf(stderr,"---\n"); + return 1; +} + + +int main(int argc, char **argv) +{ + int need_reboot = 0; + + while (argc > 1) { + if (strlen(argv[1]) < 128) + need_reboot |= setup_fs(argv[1]); + argv++; + argc--; + } + + if (need_reboot) { + fprintf(stderr,"REBOOT!\n"); + android_reboot(ANDROID_RB_RESTART, 0, 0); + exit(-1); + } + return 0; +} |