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Support patching mnt_point in fstab in dtb

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This commit is contained in:
topjohnwu
2019-09-22 04:17:15 -04:00
parent a1ccd44013
commit 0e5a113a0c
4 changed files with 66 additions and 44 deletions
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53
native/jni/magiskboot/ramdisk.cpp
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@@ -10,7 +10,7 @@
using namespace std;
static const char *ramdisk_xz = "ramdisk.cpio.xz";
constexpr char RAMDISK_XZ[] = "ramdisk.cpio.xz";
static const char *UNSUPPORT_LIST[] =
{ "sbin/launch_daemonsu.sh", "sbin/su", "init.xposed.rc",
@@ -33,7 +33,7 @@ public:
void decompress();
};
static bool check_env(const char *name) {
bool check_env(const char *name) {
const char *val = getenv(name);
return val ? strcmp(val, "true") == 0 : false;
}
@@ -74,28 +74,41 @@ void magisk_cpio::patch() {
}
#define STOCK_BOOT 0
#define MAGISK_PATCHED 1 << 0
#define UNSUPPORTED_CPIO 1 << 1
#define COMPRESSED_CPIO 1 << 2
int magisk_cpio::test() {
if (exists(ramdisk_xz))
return MAGISK_PATCHED | COMPRESSED_CPIO;
#define MAGISK_PATCHED (1 << 0)
#define UNSUPPORTED_CPIO (1 << 1)
#define COMPRESSED_CPIO (1 << 2)
#define TWO_STAGE_INIT (1 << 3)
int magisk_cpio::test() {
for (auto file : UNSUPPORT_LIST)
if (exists(file))
return UNSUPPORTED_CPIO;
for (auto file : MAGISK_LIST)
if (exists(file))
return MAGISK_PATCHED;
int flags = STOCK_BOOT;
return STOCK_BOOT;
if (exists(RAMDISK_XZ)) {
flags |= COMPRESSED_CPIO | MAGISK_PATCHED;
decompress();
}
if (exists("apex") || exists("first_stage_ramdisk"))
flags |= TWO_STAGE_INIT;
for (auto file : MAGISK_LIST) {
if (exists(file)) {
flags |= MAGISK_PATCHED;
break;
}
}
return flags;
}
#define for_each_line(line, buf, size) \
for (line = (char *) buf; line < (char *) buf + size && line[0]; line = strchr(line + 1, '\n') + 1)
char *magisk_cpio::sha1() {
decompress();
char sha1[41];
char *line;
for (auto &e : entries) {
@@ -231,32 +244,26 @@ void magisk_cpio::backup(const char *orig) {
}
void magisk_cpio::compress() {
if (exists(ramdisk_xz))
if (exists(RAMDISK_XZ))
return;
fprintf(stderr, "Compressing cpio -> [%s]\n", ramdisk_xz);
fprintf(stderr, "Compressing cpio -> [%s]\n", RAMDISK_XZ);
auto init = entries.extract("init");
XZEncoder encoder;
encoder.set_out(make_unique<BufOutStream>());
output(encoder);
encoder.finalize();
auto backup = entries.extract(".backup");
auto config = entries.extract(".backup/.magisk");
entries.clear();
entries.insert(std::move(init));
entries.insert(std::move(backup));
entries.insert(std::move(config));
auto xz = new cpio_entry(ramdisk_xz, S_IFREG);
auto xz = new cpio_entry(RAMDISK_XZ, S_IFREG);
static_cast<BufOutStream *>(encoder.get_out())->release(xz->data, xz->filesize);
insert(xz);
}
void magisk_cpio::decompress() {
auto it = entries.find(ramdisk_xz);
auto it = entries.find(RAMDISK_XZ);
if (it == entries.end())
return;
fprintf(stderr, "Decompressing cpio [%s]\n", ramdisk_xz);
entries.erase(".backup");
entries.erase(".backup/.magisk");
fprintf(stderr, "Decompressing cpio [%s]\n", RAMDISK_XZ);
LZMADecoder decoder;
decoder.set_out(make_unique<BufOutStream>());
decoder.write(it->second->data, it->second->filesize);