TheArchive/Magisk
1
0
Fork 0
mirror of https://github.com/topjohnwu/Magisk.git synced 2025-10-15 11:20:25 +00:00
Code Issues Packages Projects Releases Wiki Activity

Start Magisk in SAR

Browse Source
This commit is contained in:
topjohnwu
2019-06-25 23:31:59 -07:00
parent a462435f2f
commit e29b712108
6 changed files with 67 additions and 38 deletions
Download Patch File Download Diff File Expand all files Collapse all files

80
native/jni/init/rootdir.cpp
View File

@@ -33,11 +33,34 @@ static void patch_socket_name(const char *path) {
munmap(buf, size);
}
constexpr const char wrapper[] =
"#!/system/bin/sh\n"
"export LD_LIBRARY_PATH=\"$LD_LIBRARY_PATH:/apex/com.android.runtime/" LIBNAME "\"\n"
"exec /sbin/magisk.bin \"$0\" \"$@\"\n"
;
static void patch_init_rc(FILE *rc) {
file_readline("/init.rc", [&](string_view line) -> bool {
// Do not start vaultkeeper
if (str_contains(line, "start vaultkeeper")) {
LOGD("Remove vaultkeeper\n");
return true;
}
// Do not run flash_recovery
if (str_starts(line, "service flash_recovery")) {
LOGD("Remove flash_recovery\n");
fprintf(rc, "service flash_recovery /system/bin/xxxxx\n");
return true;
}
// Else just write the line
fprintf(rc, "%s", line.data());
return true;
});
char pfd_svc[8], ls_svc[8], bc_svc[8];
// Make sure to be unique
pfd_svc[0] = 'a';
ls_svc[0] = '0';
bc_svc[0] = 'A';
gen_rand_str(pfd_svc + 1, sizeof(pfd_svc) - 1);
gen_rand_str(ls_svc + 1, sizeof(ls_svc) - 1);
gen_rand_str(bc_svc + 1, sizeof(bc_svc) - 1);
LOGD("Inject magisk services: [%s] [%s] [%s]\n", pfd_svc, ls_svc, bc_svc);
fprintf(rc, magiskrc, pfd_svc, pfd_svc, ls_svc, bc_svc, bc_svc);
}
void RootFSInit::setup_rootfs() {
if (patch_sepolicy()) {
@@ -66,39 +89,11 @@ void RootFSInit::setup_rootfs() {
// Patch init.rc
FILE *rc = xfopen("/init.p.rc", "we");
file_readline("/init.rc", [&](auto line) -> bool {
// Do not start vaultkeeper
if (str_contains(line, "start vaultkeeper")) {
LOGD("Remove vaultkeeper\n");
return true;
}
// Do not run flash_recovery
if (str_starts(line, "service flash_recovery")) {
LOGD("Remove flash_recovery\n");
fprintf(rc, "service flash_recovery /system/bin/xxxxx\n");
return true;
}
// Else just write the line
fprintf(rc, "%s", line.data());
return true;
});
char pfd_svc[8], ls_svc[8], bc_svc[8];
// Make sure to be unique
pfd_svc[0] = 'a';
ls_svc[0] = '0';
bc_svc[0] = 'A';
gen_rand_str(pfd_svc + 1, sizeof(pfd_svc) - 1);
gen_rand_str(ls_svc + 1, sizeof(ls_svc) - 1);
gen_rand_str(bc_svc + 1, sizeof(bc_svc) - 1);
LOGD("Inject magisk services: [%s] [%s] [%s]\n", pfd_svc, ls_svc, bc_svc);
fprintf(rc, magiskrc, pfd_svc, pfd_svc, ls_svc, bc_svc, bc_svc);
patch_init_rc(rc);
fclose(rc);
clone_attr("/init.rc", "/init.p.rc");
rename("/init.p.rc", "/init.rc");
// Don't let init run in init yet
lsetfilecon("/init", "u:object_r:rootfs:s0");
// Create hardlink mirror of /sbin to /root
mkdir("/root", 0750);
clone_attr("/sbin", "/root");
@@ -156,6 +151,12 @@ bool MagiskInit::patch_sepolicy(const char *file) {
return patch_init;
}
constexpr const char wrapper[] =
"#!/system/bin/sh\n"
"export LD_LIBRARY_PATH=\"$LD_LIBRARY_PATH:/apex/com.android.runtime/" LIBNAME "\"\n"
"exec /sbin/magisk.bin \"$0\" \"$@\"\n"
;
static void sbin_overlay(const raw_data &self, const raw_data &config) {
LOGD("Mount /sbin tmpfs overlay\n");
xmount("tmpfs", "/sbin", "tmpfs", 0, "mode=755");
@@ -236,7 +237,10 @@ void SARInit::patch_rootdir() {
close(src);
close(dest);
// Customize rootdir
/* ******************
* Customize rootdir
* ******************/
char *addr;
size_t size;
file_attr attr;
@@ -288,6 +292,12 @@ void SARInit::patch_rootdir() {
}
patch_sepolicy(PATCHPOLICY);
FILE *rc = xfopen(ROOTOVERLAY "/init.rc", "we");
patch_init_rc(rc);
fclose(rc);
clone_attr("/init.rc", ROOTOVERLAY "/init.rc");
xmount(ROOTOVERLAY "/init.rc", "/init.rc", nullptr, MS_BIND, nullptr);
}
#ifdef MAGISK_DEBUG