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Magisk
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Install one single ABI in ramdisk

This commit is contained in:
topjohnwu 2024-03-31 22:01:22 -07:00
parent 30bf5c8448
commit fb5ee86615
10 changed files with 72 additions and 89 deletions
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46
app/src/main/java/com/topjohnwu/magisk/core/tasks/MagiskInstaller.kt
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@ -1,6 +1,7 @@
package com.topjohnwu.magisk.core.tasks
import android.net.Uri
import android.os.Process
import android.system.ErrnoException
import android.system.Os
import android.system.OsConstants
@ -105,40 +106,41 @@ abstract class MagiskInstallImpl protected constructor(
try {
// Extract binaries
if (isRunningAsStub) {
val zf = ZipFile(StubApk.current(context))
ZipFile(StubApk.current(context)).use { zf ->
zf.entries().asSequence().filter {
!it.isDirectory && it.name.startsWith("/lib/${Const.CPU_ABI}/")
}.forEach {
val n = it.name.substring(it.name.lastIndexOf('/') + 1)
val name = n.substring(3, n.length - 3)
val dest = File(installDir, name)
zf.getInputStream(it).writeTo(dest)
dest.setExecutable(true)
}
// Also extract magisk32 on non 64-bit only 64-bit devices
val is32lib = Const.CPU_ABI_32?.let {
{ entry: ZipEntry -> entry.name == "lib/$it/libmagisk32.so" }
} ?: { false }
zf.entries().asSequence().filter {
!it.isDirectory && (it.name.startsWith("lib/${Const.CPU_ABI}/") || is32lib(it))
}.forEach {
val n = it.name.substring(it.name.lastIndexOf('/') + 1)
val name = n.substring(3, n.length - 3)
val dest = File(installDir, name)
zf.getInputStream(it).writeTo(dest)
dest.setExecutable(true)
val abi32 = Const.CPU_ABI_32
if (Process.is64Bit() && abi32 != null) {
val magisk32 = File(installDir, "magisk32")
zf.getInputStream(ZipEntry("lib/$abi32/libmagisk.so")).writeTo(magisk32)
magisk32.setExecutable(true)
}
}
zf.close()
} else {
val info = context.applicationInfo
var libs = File(info.nativeLibraryDir).listFiles { _, name ->
name.startsWith("lib") && name.endsWith(".so")
} ?: emptyArray()
// Also symlink magisk32 on non 64-bit only 64-bit devices
val lib32 = info.javaClass.getDeclaredField("secondaryNativeLibraryDir")
.get(info) as String?
if (lib32 != null) {
libs += File(lib32, "libmagisk32.so")
}
for (lib in libs) {
val name = lib.name.substring(3, lib.name.length - 3)
Os.symlink(lib.path, "$installDir/$name")
}
// Also symlink magisk32 on 64-bit devices that supports 32-bit
val lib32 = info.javaClass.getDeclaredField("secondaryNativeLibraryDir")
.get(info) as String?
if (lib32 != null) {
Os.symlink("$lib32/libmagisk.so", "$installDir/magisk32");
}
}
// Extract scripts

8
buildSrc/src/main/java/Setup.kt
View File

@ -231,25 +231,25 @@ fun Project.setupApp() {
into("armeabi-v7a") {
from(rootProject.file("native/out/armeabi-v7a")) {
include("busybox", "magiskboot", "magiskinit", "magiskpolicy", "magisk")
rename { if (it == "magisk") "libmagisk32.so" else "lib$it.so" }
rename { "lib$it.so" }
}
}
into("x86") {
from(rootProject.file("native/out/x86")) {
include("busybox", "magiskboot", "magiskinit", "magiskpolicy", "magisk")
rename { if (it == "magisk") "libmagisk32.so" else "lib$it.so" }
rename { "lib$it.so" }
}
}
into("arm64-v8a") {
from(rootProject.file("native/out/arm64-v8a")) {
include("busybox", "magiskboot", "magiskinit", "magiskpolicy", "magisk")
rename { if (it == "magisk") "libmagisk64.so" else "lib$it.so" }
rename { "lib$it.so" }
}
}
into("x86_64") {
from(rootProject.file("native/out/x86_64")) {
include("busybox", "magiskboot", "magiskinit", "magiskpolicy", "magisk")
rename { if (it == "magisk") "libmagisk64.so" else "lib$it.so" }
rename { "lib$it.so" }
}
}
onlyIf {

6
native/src/core/bootstages.cpp
View File

@ -41,6 +41,12 @@ static bool magisk_env() {
cp_afc(DATABIN "/busybox", buf);
exec_command_async(buf, "--install", "-s", dirname(buf));
// magisk32 and magiskpolicy are not installed into ramdisk and has to be copied
// from data to magisk tmp
if (access(DATABIN "/magisk32", X_OK) == 0) {
ssprintf(buf, sizeof(buf), "%s/magisk32", get_magisk_tmp());
cp_afc(DATABIN "/magisk32", buf);
}
if (access(DATABIN "/magiskpolicy", X_OK) == 0) {
ssprintf(buf, sizeof(buf), "%s/magiskpolicy", get_magisk_tmp());
cp_afc(DATABIN "/magiskpolicy", buf);

11
native/src/core/module.cpp
View File

@ -203,11 +203,16 @@ public:
class zygisk_node : public node_entry {
public:
explicit zygisk_node(const char *name, bool is64bit) : node_entry(name, DT_REG, this),
is64bit(is64bit) {}
explicit zygisk_node(const char *name, bool is64bit)
: node_entry(name, DT_REG, this), is64bit(is64bit) {}
void mount() override {
const string src = get_magisk_tmp() + "/magisk"s + (is64bit ? "64" : "32");
#if defined(__LP64__)
const string src = get_magisk_tmp() + "/magisk"s + (is64bit ? "" : "32");
#else
const string src = get_magisk_tmp() + "/magisk"s;
(void) is64bit;
#endif
create_and_mount("zygisk", src, true);
}

6
native/src/core/zygisk/entry.cpp
View File

@ -97,7 +97,11 @@ static void connect_companion(int client, bool is_64_bit) {
zygiskd_socket = fds[0];
if (fork_dont_care() == 0) {
char exe[64];
ssprintf(exe, sizeof(exe), "%s/magisk%s", get_magisk_tmp(), (is_64_bit ? "64" : "32"));
#if defined(__LP64__)
ssprintf(exe, sizeof(exe), "%s/magisk%s", get_magisk_tmp(), (is_64_bit ? "" : "32"));
#else
ssprintf(exe, sizeof(exe), "%s/magisk", get_magisk_tmp());
#endif
// This fd has to survive exec
fcntl(fds[1], F_SETFD, 0);
char buf[16];

22
native/src/init/rootdir.cpp
View File

@ -187,29 +187,17 @@ static void magic_mount(const string &sdir, const string &ddir = "") {
}
static void extract_files(bool sbin) {
const char *m32 = sbin ? "/sbin/magisk32.xz" : "magisk32.xz";
const char *m64 = sbin ? "/sbin/magisk64.xz" : "magisk64.xz";
const char *magisk_xz = sbin ? "/sbin/magisk.xz" : "magisk.xz";
const char *stub_xz = sbin ? "/sbin/stub.xz" : "stub.xz";
if (access(m32, F_OK) == 0) {
mmap_data magisk(m32);
unlink(m32);
int fd = xopen("magisk32", O_WRONLY | O_CREAT, 0755);
if (access(magisk_xz, F_OK) == 0) {
mmap_data magisk(magisk_xz);
unlink(magisk_xz);
int fd = xopen("magisk", O_WRONLY | O_CREAT, 0755);
fd_stream ch(fd);
unxz(ch, magisk);
close(fd);
}
if (access(m64, F_OK) == 0) {
mmap_data magisk(m64);
unlink(m64);
int fd = xopen("magisk64", O_WRONLY | O_CREAT, 0755);
fd_stream ch(fd);
unxz(ch, magisk);
close(fd);
xsymlink("./magisk64", "magisk");
} else {
xsymlink("./magisk32", "magisk");
}
if (access(stub_xz, F_OK) == 0) {
mmap_data stub(stub_xz);
unlink(stub_xz);

18
scripts/avd_magisk.sh
View File

@ -52,12 +52,18 @@ unzip -oj magisk.apk 'assets/util_functions.sh' 'assets/stub.apk'
api_level_arch_detect
unzip -oj magisk.apk "lib/$ABI/*" "lib/$ABI32/libmagisk32.so" -x "lib/$ABI/libbusybox.so"
unzip -oj magisk.apk "lib/$ABI/*" -x "lib/$ABI/libbusybox.so"
for file in lib*.so; do
chmod 755 $file
mv "$file" "${file:3:${#file}-6}"
done
if $IS64BIT; then
unzip -oj magisk.apk "lib/$ABI32/libmagisk.so"
mv libmagisk.so magisk32
chmod 755 magisk32
fi
# Stop zygote (and previous setup if exists)
magisk --stop 2>/dev/null
stop
@ -109,8 +115,9 @@ else
# Android Q+ without sbin
MAGISKTMP=/debug_ramdisk
# If a file name 'magisk' is in current directory, mount will fail
rm -f magisk
mv magisk magisk.tmp
mount -t tmpfs -o 'mode=0755' magisk /debug_ramdisk
mv magisk.tmp magisk
fi
# Magisk stuff
@ -120,7 +127,7 @@ mkdir $NVBASE/modules 2>/dev/null
mkdir $NVBASE/post-fs-data.d 2>/dev/null
mkdir $NVBASE/service.d 2>/dev/null
for file in magisk32 magisk64 magiskpolicy stub.apk; do
for file in magisk magisk32 magiskpolicy stub.apk; do
chmod 755 ./$file
cp -af ./$file $MAGISKTMP/$file
cp -af ./$file $MAGISKBIN/$file
@ -129,11 +136,6 @@ cp -af ./magiskboot $MAGISKBIN/magiskboot
cp -af ./magiskinit $MAGISKBIN/magiskinit
cp -af ./busybox $MAGISKBIN/busybox
if $IS64BIT; then
ln -s ./magisk64 $MAGISKTMP/magisk
else
ln -s ./magisk32 $MAGISKTMP/magisk
fi
ln -s ./magisk $MAGISKTMP/su
ln -s ./magisk $MAGISKTMP/resetprop
ln -s ./magiskpolicy $MAGISKTMP/supolicy

22
scripts/avd_patch.sh
View File

@ -43,7 +43,7 @@ unzip -oj magisk.apk 'assets/util_functions.sh' 'assets/stub.apk'
api_level_arch_detect
unzip -oj magisk.apk "lib/$ABI/*" "lib/$ABI32/libmagisk32.so" -x "lib/$ABI/libbusybox.so"
unzip -oj magisk.apk "lib/$ABI/*" -x "lib/$ABI/libbusybox.so"
for file in lib*.so; do
chmod 755 $file
mv "$file" "${file:3:${#file}-6}"
@ -57,34 +57,20 @@ export KEEPFORCEENCRYPT=true
echo "KEEPVERITY=$KEEPVERITY" > config
echo "KEEPFORCEENCRYPT=$KEEPFORCEENCRYPT" >> config
if [ -f magisk64 ]; then
echo "PREINITDEVICE=$(./magisk64 --preinit-device)" >> config
else
echo "PREINITDEVICE=$(./magisk32 --preinit-device)" >> config
fi
echo "PREINITDEVICE=$(./magisk --preinit-device)" >> config
# For API 28, we also patch advancedFeatures.ini to disable SAR
# Manually override skip_initramfs by setting RECOVERYMODE=true
[ $API = "28" ] && echo 'RECOVERYMODE=true' >> config
cat config
SKIP32="#"
SKIP64="#"
if [ -f magisk64 ]; then
./magiskboot compress=xz magisk64 magisk64.xz
unset SKIP64
fi
if [ -e "/system/bin/linker" ]; then
./magiskboot compress=xz magisk32 magisk32.xz
unset SKIP32
fi
./magiskboot compress=xz magisk magisk.xz
./magiskboot compress=xz stub.apk stub.xz
./magiskboot cpio ramdisk.cpio \
"add 0750 init magiskinit" \
"mkdir 0750 overlay.d" \
"mkdir 0750 overlay.d/sbin" \
"$SKIP32 add 0644 overlay.d/sbin/magisk32.xz magisk32.xz" \
"$SKIP64 add 0644 overlay.d/sbin/magisk64.xz magisk64.xz" \
"add 0644 overlay.d/sbin/magisk.xz magisk.xz" \
"add 0644 overlay.d/sbin/stub.xz stub.xz" \
"patch" \
"backup ramdisk.cpio.orig" \

20
scripts/boot_patch.sh
View File

@ -18,7 +18,7 @@
# util_functions.sh script A script which hosts all functions required
# for this script to work properly.
# magiskinit binary The binary to replace /init.
# magisk(32/64) binary The magisk binaries.
# magisk binary The magisk binary.
# magiskboot binary A tool to manipulate boot images.
# stub.apk binary The stub Magisk app to embed into ramdisk.
# chromeos folder This folder includes the utility and keys to sign
@ -156,19 +156,10 @@ fi
ui_print "- Patching ramdisk"
$BOOTMODE && [ -z "$PREINITDEVICE" ] && PREINITDEVICE=$(./magisk --preinit-device)
# Compress to save precious ramdisk space
SKIP32="#"
SKIP64="#"
if [ -f magisk64 ]; then
$BOOTMODE && [ -z "$PREINITDEVICE" ] && PREINITDEVICE=$(./magisk64 --preinit-device)
./magiskboot compress=xz magisk64 magisk64.xz
unset SKIP64
fi
if [ -f magisk32 ]; then
$BOOTMODE && [ -z "$PREINITDEVICE" ] && PREINITDEVICE=$(./magisk32 --preinit-device)
./magiskboot compress=xz magisk32 magisk32.xz
unset SKIP32
fi
./magiskboot compress=xz magisk magisk.xz
./magiskboot compress=xz stub.apk stub.xz
echo "KEEPVERITY=$KEEPVERITY" > config
@ -184,8 +175,7 @@ fi
"add 0750 init magiskinit" \
"mkdir 0750 overlay.d" \
"mkdir 0750 overlay.d/sbin" \
"$SKIP32 add 0644 overlay.d/sbin/magisk32.xz magisk32.xz" \
"$SKIP64 add 0644 overlay.d/sbin/magisk64.xz magisk64.xz" \
"add 0644 overlay.d/sbin/magisk.xz magisk.xz" \
"add 0644 overlay.d/sbin/stub.xz stub.xz" \
"patch" \
"$SKIP_BACKUP backup ramdisk.cpio.orig" \

2
scripts/flash_script.sh
View File

@ -55,7 +55,7 @@ BINDIR=$INSTALLER/lib/$ABI
cd $BINDIR
for file in lib*.so; do mv "$file" "${file:3:${#file}-6}"; done
cd /
cp -af $INSTALLER/lib/$ABI32/libmagisk32.so $BINDIR/magisk32 2>/dev/null
cp -af $INSTALLER/lib/$ABI32/libmagisk.so $BINDIR/magisk32 2>/dev/null
# Check if system root is installed and remove
$BOOTMODE || remove_system_su