forked from MarcoBuster/Magisk
79 lines
2.0 KiB
C
79 lines
2.0 KiB
C
#include "magiskhide.h"
|
|
|
|
int hideMagisk() {
|
|
close(pipefd[1]);
|
|
|
|
int pid, fd;
|
|
char cache_block[256];
|
|
cache_block[0] = '\0';
|
|
|
|
while(1) {
|
|
read(pipefd[0], &pid, sizeof(pid));
|
|
// Termination called
|
|
if(pid == -1) break;
|
|
|
|
manage_selinux();
|
|
|
|
snprintf(buffer, sizeof(buffer), "/proc/%d/ns/mnt", pid);
|
|
if((fd = open(buffer, O_RDONLY)) == -1) continue; // Maybe process died..
|
|
if(setns(fd, 0) == -1) {
|
|
fprintf(logfile, "MagiskHide: Unable to change namespace for pid=%d\n", pid);
|
|
continue;
|
|
}
|
|
close(fd);
|
|
|
|
snprintf(buffer, sizeof(buffer), "/proc/%d/mounts", pid);
|
|
FILE *mount_fp = fopen(buffer, "r");
|
|
if (mount_fp == NULL) {
|
|
fprintf(logfile, "MagiskHide: Error opening mount list!\n");
|
|
continue;
|
|
}
|
|
|
|
int mount_size;
|
|
char **mount_list = file_to_str_arr(mount_fp, &mount_size);
|
|
|
|
// Find the cache block name if not found yet
|
|
if (strlen(cache_block) == 0) {
|
|
for(i = 0; i < mount_size; ++i) {
|
|
if (strstr(mount_list[i], " /cache ")) {
|
|
sscanf(mount_list[i], "%256s", cache_block);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
// First unmount the dummy skeletons, cache mounts, and /sbin links
|
|
for(i = mount_size - 1; i >= 0; --i) {
|
|
if (strstr(mount_list[i], "tmpfs /system") || strstr(mount_list[i], "tmpfs /vendor")
|
|
|| strstr(mount_list[i], "tmpfs /sbin")
|
|
|| (strstr(mount_list[i], cache_block) && strstr(mount_list[i], "/system/")) ) {
|
|
sscanf(mount_list[i], "%*s %512s", buffer);
|
|
lazy_unmount(buffer);
|
|
}
|
|
free(mount_list[i]);
|
|
}
|
|
free(mount_list);
|
|
|
|
// Re-read mount infos
|
|
fseek(mount_fp, 0, SEEK_SET);
|
|
mount_list = file_to_str_arr(mount_fp, &mount_size);
|
|
fclose(mount_fp);
|
|
|
|
// Unmount loop mounts
|
|
for(i = mount_size - 1; i >= 0; --i) {
|
|
if (strstr(mount_list[i], "/dev/block/loop") && !strstr(mount_list[i], DUMMYPATH)) {
|
|
sscanf(mount_list[i], "%*s %512s", buffer);
|
|
lazy_unmount(buffer);
|
|
}
|
|
free(mount_list[i]);
|
|
}
|
|
free(mount_list);
|
|
|
|
// Send resume signal
|
|
kill(pid, SIGCONT);
|
|
}
|
|
|
|
// Should never go here
|
|
return 1;
|
|
}
|