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Support Safe Mode detection

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When detecting device is booting as Safe Mode, disable all modules and
MagiskHide and skip all operations. The only thing that'll be available
in this state is root (Magisk Manager will also be disabled by system).

Since the next normal boot will also have all modules disabled, this can
be used to rescue a device in the case when a rogue module causes
bootloop and no custom recovery is available (or recoveries without
the ability to decrypt data).
This commit is contained in:
topjohnwu
2020-05-08 00:45:11 -07:00
parent 232ae2a189
commit a5d7c41d20
7 changed files with 35 additions and 36 deletions
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11
native/jni/core/module.cpp
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@@ -542,7 +542,7 @@ static void inject_magisk_bins(root_node *system) {
delete bin->extract(init_applet[i]);
}
static void mount_modules() {
void magic_mount() {
node_entry::mirror_dir = MAGISKTMP + "/" MIRRDIR;
node_entry::module_mnt = MAGISKTMP + "/" MODULEMNT "/";
@@ -683,12 +683,10 @@ void handle_modules() {
// Recollect modules (module scripts could remove itself)
module_list.clear();
collect_modules();
mount_modules();
}
void remove_modules() {
LOGI("* Remove all modules and reboot\n");
void foreach_modules(const char *name) {
LOGI("* Add %s to all modules\n", name);
auto dir = open_dir(MODULEROOT);
if (!dir)
return;
@@ -700,9 +698,8 @@ void remove_modules() {
continue;
int modfd = xopenat(dfd, entry->d_name, O_RDONLY | O_CLOEXEC);
close(xopenat(modfd, "remove", O_RDONLY | O_CREAT | O_CLOEXEC, 0));
close(xopenat(modfd, name, O_RDONLY | O_CREAT | O_CLOEXEC, 0));
close(modfd);
}
}
reboot();
}