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MagiskHide small update

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This commit is contained in:
topjohnwu 2016-12-11 03:41:29 +08:00
parent 0a53c42a8a
commit 70e332b9e8
1 changed files with 35 additions and 25 deletions
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60
jni/magiskhide.c
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@ -19,7 +19,7 @@
FILE *logfile;
int i, list_size;
char **hide_list = NULL;
char **hide_list = NULL, cache_block[256];
pthread_mutex_t mutex;
char **file_to_str_arr(FILE *fp, int *size) {
@ -58,7 +58,7 @@ void lazy_unmount(const char* mountpoint) {
//WARNING: Calling this will change our current namespace
//We don't care because we don't want to run from here anyway
int hideMagisk(int pid, int uid) {
struct stat info;
// struct stat info;
char path[256];
// snprintf(path, 256, "/proc/%d", pid);
// if (stat(path, &info) == -1) {
@ -87,32 +87,40 @@ int hideMagisk(int pid, int uid) {
int mount_size;
char **mount_list = file_to_str_arr(mount_fp, &mount_size), mountpoint[256], cache_block[256];
fclose(mount_fp);
// Find the cache block
for(i = 0; i < mount_size; ++i) {
if (strstr(mount_list[i], "/cache")) {
sscanf(mount_list[i], "%256s", cache_block);
break;
// 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;
}
}
}
// Unmount in inverse order
// First unmount the dummy skeletons and the cache mounts
for(i = mount_size - 1; i >= 0; --i) {
if (strstr(mount_list[i], cache_block) && strstr(mount_list[i], "/system")) {
if (strstr(mount_list[i], "tmpfs /system/") || strstr(mount_list[i], "tmpfs /vendor/")
|| (strstr(mount_list[i], cache_block) && strstr(mount_list[i], "/system")) ) {
sscanf(mount_list[i], "%256s %256s", mountpoint, mountpoint);
} else if (strstr(mount_list[i], "/dev/block/loop")) {
if (strstr(mount_list[i], "/dev/magisk")) continue;
// Everything from loop mount
sscanf(mount_list[i], "%256s %256s", mountpoint, mountpoint);
} else if (strstr(mount_list[i], "tmpfs /system/")) {
// Directly unmount skeletons
sscanf(mount_list[i], "%256s %256s", mountpoint, mountpoint);
} else {
free(mount_list[i]);
continue;
lazy_unmount(mountpoint);
}
free(mount_list[i]);
}
// Free memory
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")) {
sscanf(mount_list[i], "%256s %256s", mountpoint, mountpoint);
lazy_unmount(mountpoint);
}
lazy_unmount(mountpoint);
free(mount_list[i]);
}
// Free memory
@ -170,7 +178,7 @@ void *monitor_list(void *path) {
exit(1);
}
}
update_list((char*) listpath);
update_list(listpath);
}
return NULL;
@ -194,6 +202,9 @@ int main(int argc, char **argv, char **envp) {
logfile = fopen(LOGFILE, "a+");
setbuf(logfile, NULL);
// Set cache block to null
cache_block[0] = 0;
pthread_t list_monitor;
pthread_mutex_init(&mutex, NULL);
@ -246,8 +257,7 @@ int main(int argc, char **argv, char **envp) {
pthread_kill(list_monitor, SIGQUIT);
pthread_mutex_destroy(&mutex);
fprintf(logfile, "MagiskHide: Error occurred...\n");
fprintf(logfile, "MagiskHide: Cannot read from logcat, abort...\n");
fclose(logfile);
return 1;