85 lines
1.8 KiB
C
85 lines
1.8 KiB
C
/* post_fs_data.c - post-fs-data actions
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*/
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#include <stdlib.h>
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#include <stdio.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <string.h>
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#include <linux/loop.h>
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#include <sys/ioctl.h>
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#include <sys/mount.h>
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#include "magisk.h"
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#include "utils.h"
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#include "daemon.h"
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#include "resetprop.h"
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static char *loopsetup(const char *img) {
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char device[20];
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struct loop_info64 info;
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int i, lfd, ffd;
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memset(&info, 0, sizeof(info));
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// First get an empty loop device
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for (i = 0; i <= 7; ++i) {
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sprintf(device, "/dev/block/loop%d", i);
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lfd = xopen(device, O_RDWR);
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if (ioctl(lfd, LOOP_GET_STATUS64, &info) == -1)
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break;
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close(lfd);
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}
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if (i == 8) return NULL;
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ffd = xopen(img, O_RDWR);
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if (ioctl(lfd, LOOP_SET_FD, ffd) == -1)
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return NULL;
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strcpy((char *) info.lo_file_name, img);
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ioctl(lfd, LOOP_SET_STATUS64, &info);
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return strdup(device);
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}
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static void *start_magisk_hide(void *args) {
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// Setup default error handler for thread
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err_handler = exit_thread;
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launch_magiskhide(-1);
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return NULL;
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}
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char *mount_image(const char *img, const char *target) {
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char *device = loopsetup(img);
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if (device)
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xmount(device, target, "ext4", 0, NULL);
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return device;
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}
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void post_fs_data(int client) {
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// ack
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write_int(client, 0);
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close(client);
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if (!check_data())
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goto unblock;
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LOGI("** post-fs-data mode running\n");
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LOGI("* Mounting magisk.img\n");
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// Mounting magisk image
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char *magiskimg = mount_image("/data/magisk.img", "/magisk");
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free(magiskimg);
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// TODO: Magic Mounts, modules etc.
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// Run common scripts
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exec_common_script("post-fs-data");
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// Start magiskhide if enabled
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char *hide_prop = getprop("persist.magisk.hide");
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if (hide_prop) {
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if (strcmp(hide_prop, "1") == 0) {
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pthread_t thread;
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xpthread_create(&thread, NULL, start_magisk_hide, NULL);
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}
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free(hide_prop);
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}
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unblock:
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unblock_boot_process();
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}
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