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Redirect /data/adb/magisk/busybox

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Workaround some stupid Samsung kernel restrictions
This commit is contained in:
topjohnwu 2020-11-11 02:26:07 -08:00
parent 2b759b84b0
commit f9c7a4c933
1 changed files with 18 additions and 3 deletions
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21
native/jni/core/bootstages.cpp
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@ -98,6 +98,13 @@ static void mount_mirrors() {
link_mirror(system_ext) link_mirror(system_ext)
} }
constexpr char bb_script[] = R"EOF(
#!/system/bin/sh
BB=%s
[ -x $BB ] && exec $BB "$@"
exec /data/adb/magisk/busybox.bin "$@"
)EOF";
static bool magisk_env() { static bool magisk_env() {
char buf[4096]; char buf[4096];
@ -145,12 +152,20 @@ static bool magisk_env() {
unlink("/sbin/magiskhide"); unlink("/sbin/magiskhide");
} }
if (access(DATABIN "/busybox", X_OK) == -1) if (access(DATABIN "/busybox.bin", X_OK)) {
return false; if (access(DATABIN "/busybox", X_OK))
return false;
rename(DATABIN "/busybox", DATABIN "/busybox.bin");
}
sprintf(buf, "%s/" BBPATH "/busybox", MAGISKTMP.data()); sprintf(buf, "%s/" BBPATH "/busybox", MAGISKTMP.data());
{
auto fp = open_file(DATABIN "/busybox", "we");
fprintf(fp.get(), bb_script, buf);
}
chmod(DATABIN "/busybox", 0755);
mkdir(dirname(buf), 0755); mkdir(dirname(buf), 0755);
cp_afc(DATABIN "/busybox", buf); cp_afc(DATABIN "/busybox.bin", buf);
exec_command_async(buf, "--install", "-s", dirname(buf)); exec_command_async(buf, "--install", "-s", dirname(buf));
return true; return true;