86 lines
1.9 KiB
C
86 lines
1.9 KiB
C
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/reboot.h>
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#include <sys/wait.h>
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#include <cutils/android_reboot.h>
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#include <cutils/partition_utils.h>
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const char *mkfs = "/system/bin/make_ext4fs";
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int setup_fs(const char *blockdev)
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{
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char buf[256], path[128];
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pid_t child;
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int status, n;
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pid_t pid;
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/* we might be looking at an indirect reference */
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n = readlink(blockdev, path, sizeof(path) - 1);
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if (n > 0) {
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path[n] = 0;
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if (!memcmp(path, "/dev/block/", 11))
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blockdev = path + 11;
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}
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if (strchr(blockdev,'/')) {
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fprintf(stderr,"not a block device name: %s\n", blockdev);
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return 0;
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}
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snprintf(buf, sizeof(buf), "/sys/fs/ext4/%s", blockdev);
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if (access(buf, F_OK) == 0) {
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fprintf(stderr,"device %s already has a filesystem\n", blockdev);
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return 0;
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}
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snprintf(buf, sizeof(buf), "/dev/block/%s", blockdev);
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if (!partition_wiped(buf)) {
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fprintf(stderr,"device %s not wiped, probably encrypted, not wiping\n", blockdev);
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return 0;
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}
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fprintf(stderr,"+++\n");
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child = fork();
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if (child < 0) {
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fprintf(stderr,"error: setup_fs: fork failed\n");
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return 0;
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}
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if (child == 0) {
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execl(mkfs, mkfs, buf, NULL);
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exit(-1);
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}
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while ((pid=waitpid(-1, &status, 0)) != child) {
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if (pid == -1) {
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fprintf(stderr, "error: setup_fs: waitpid failed!\n");
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return 1;
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}
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}
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fprintf(stderr,"---\n");
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return 1;
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}
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int main(int argc, char **argv)
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{
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int need_reboot = 0;
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while (argc > 1) {
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if (strlen(argv[1]) < 128)
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need_reboot |= setup_fs(argv[1]);
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argv++;
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argc--;
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}
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if (need_reboot) {
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fprintf(stderr,"REBOOT!\n");
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android_reboot(ANDROID_RB_RESTART, 0, 0);
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exit(-1);
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}
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return 0;
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}
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