mirror of
https://github.com/topjohnwu/Magisk.git
synced 2024-11-27 20:15:29 +00:00
Support header_version 3
This commit is contained in:
topjohnwu
parent
d625beb7f3
commit
4aeac3b8f4
@ -61,12 +61,13 @@ void dyn_img_hdr::print() {
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fprintf(stderr, "HEADER_VER [%u]\n", ver);
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fprintf(stderr, "KERNEL_SZ [%u]\n", kernel_size());
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fprintf(stderr, "RAMDISK_SZ [%u]\n", ramdisk_size());
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if (ver < 3)
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fprintf(stderr, "SECOND_SZ [%u]\n", second_size());
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if (ver == 0)
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fprintf(stderr, "EXTRA_SZ [%u]\n", extra_size());
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if (ver >= 1)
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if (ver == 1 || ver == 2)
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fprintf(stderr, "RECOV_DTBO_SZ [%u]\n", recovery_dtbo_size());
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if (ver >= 2)
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if (ver == 2)
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fprintf(stderr, "DTB_SZ [%u]\n", dtb_size());
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ver = os_version();
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@ -87,22 +88,25 @@ void dyn_img_hdr::print() {
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}
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fprintf(stderr, "PAGESIZE [%u]\n", page_size());
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if (ver < 3)
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fprintf(stderr, "NAME [%s]\n", name());
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fprintf(stderr, "CMDLINE [%.512s%.1024s]\n", cmdline(), extra_cmdline());
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fprintf(stderr, "CMDLINE [%.*s%.*s]\n", BOOT_ARGS_SIZE, cmdline(), BOOT_EXTRA_ARGS_SIZE, extra_cmdline());
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if (auto chksum = reinterpret_cast<uint8_t*>(id())) {
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fprintf(stderr, "CHECKSUM [");
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for (int i = 0; i < SHA256_DIGEST_SIZE; ++i)
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fprintf(stderr, "%02hhx", static_cast<uint8_t>(id()[i]));
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fprintf(stderr, "%02hhx", chksum[i]);
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fprintf(stderr, "]\n");
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}
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}
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void dyn_img_hdr::dump_hdr_file() {
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FILE *fp = xfopen(HEADER_FILE, "w");
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fprintf(fp, "pagesize=%u\n", page_size());
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fprintf(fp, "name=%s\n", name());
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fprintf(fp, "cmdline=%.512s%.1024s\n", cmdline(), extra_cmdline());
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fprintf(fp, "cmdline=%.*s%.*s\n", BOOT_ARGS_SIZE, cmdline(), BOOT_EXTRA_ARGS_SIZE, extra_cmdline());
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uint32_t ver = os_version();
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if (ver) {
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int a, b, c, y, m = 0;
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int a, b, c, y, m;
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int version, patch_level;
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version = ver >> 11;
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patch_level = ver & 0x7ff;
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@ -127,11 +131,12 @@ void dyn_img_hdr::load_hdr_file() {
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memset(name(), 0, 16);
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memcpy(name(), value.data(), value.length() > 15 ? 15 : value.length());
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} else if (key == "cmdline") {
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memset(cmdline(), 0, 512);
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memset(extra_cmdline(), 0, 1024);
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if (value.length() > 512) {
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memcpy(cmdline(), value.data(), 512);
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memcpy(extra_cmdline(), &value[512], value.length() - 511);
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memset(cmdline(), 0, BOOT_ARGS_SIZE);
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memset(extra_cmdline(), 0, BOOT_EXTRA_ARGS_SIZE);
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if (value.length() > BOOT_ARGS_SIZE) {
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memcpy(cmdline(), value.data(), BOOT_ARGS_SIZE);
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auto len = std::min(value.length() - BOOT_ARGS_SIZE, (size_t) BOOT_EXTRA_ARGS_SIZE);
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memcpy(extra_cmdline(), &value[BOOT_ARGS_SIZE], len);
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} else {
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memcpy(cmdline(), value.data(), value.length());
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}
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@ -212,20 +217,30 @@ void boot_img::parse_image(uint8_t *addr) {
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addr += ACCLAIM_PRE_HEADER_SZ;
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}
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if (hp->header_version == 1)
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switch (hp->header_version) {
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case 1:
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hdr = new dyn_img_v1(addr);
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else if (hp->header_version == 2)
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break;
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case 2:
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hdr = new dyn_img_v2(addr);
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else
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break;
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case 3:
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hdr = new dyn_img_v3(addr);
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break;
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default:
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hdr = new dyn_img_v0(addr);
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break;
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}
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}
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if (char *id = hdr->id()) {
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for (int i = SHA_DIGEST_SIZE + 4; i < SHA256_DIGEST_SIZE; ++i) {
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if (hdr->id()[i]) {
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if (id[i]) {
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flags |= SHA256_FLAG;
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break;
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}
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}
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}
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hdr->print();
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@ -341,14 +356,14 @@ int split_image_dtb(const char *filename) {
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}
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}
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int unpack(const char *image, bool nodecomp, bool hdr) {
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int unpack(const char *image, bool skip_decomp, bool hdr) {
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boot_img boot(image);
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if (hdr)
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boot.hdr->dump_hdr_file();
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// Dump kernel
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if (!nodecomp && COMPRESSED(boot.k_fmt)) {
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if (!skip_decomp && COMPRESSED(boot.k_fmt)) {
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int fd = creat(KERNEL_FILE, 0644);
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decompress(boot.k_fmt, fd, boot.kernel, boot.hdr->kernel_size());
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close(fd);
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@ -360,7 +375,7 @@ int unpack(const char *image, bool nodecomp, bool hdr) {
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dump(boot.kernel_dtb, boot.kernel_dt_size, KER_DTB_FILE);
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// Dump ramdisk
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if (!nodecomp && COMPRESSED(boot.r_fmt)) {
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if (!skip_decomp && COMPRESSED(boot.r_fmt)) {
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int fd = creat(RAMDISK_FILE, 0644);
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decompress(boot.r_fmt, fd, boot.ramdisk, boot.hdr->ramdisk_size());
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close(fd);
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@ -372,7 +387,7 @@ int unpack(const char *image, bool nodecomp, bool hdr) {
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dump(boot.second, boot.hdr->second_size(), SECOND_FILE);
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// Dump extra
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if (!nodecomp && COMPRESSED(boot.e_fmt)) {
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if (!skip_decomp && COMPRESSED(boot.e_fmt)) {
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int fd = creat(EXTRA_FILE, 0644);
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decompress(boot.e_fmt, fd, boot.extra, boot.hdr->extra_size());
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close(fd);
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@ -392,7 +407,7 @@ int unpack(const char *image, bool nodecomp, bool hdr) {
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#define file_align() \
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write_zero(fd, align_off(lseek(fd, 0, SEEK_CUR) - off.header, boot.hdr->page_size()))
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void repack(const char* src_img, const char* out_img, bool nocomp) {
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void repack(const char* src_img, const char* out_img, bool skip_comp) {
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boot_img boot(src_img);
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auto is_flag = [&](unsigned flag) -> bool { return (boot.flags & flag); };
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@ -428,11 +443,11 @@ void repack(const char* src_img, const char* out_img, bool nocomp) {
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if (is_flag(DHTB_FLAG)) {
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// Skip DHTB header
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write_zero(fd, sizeof(dhtb_hdr));
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} else if (boot.flags & BLOB_FLAG) {
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} else if (is_flag(BLOB_FLAG)) {
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restore_buf(fd, boot.map_addr, sizeof(blob_hdr));
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} else if (boot.flags & NOOKHD_FLAG) {
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} else if (is_flag(NOOKHD_FLAG)) {
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restore_buf(fd, boot.map_addr, NOOKHD_PRE_HEADER_SZ);
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} else if (boot.flags & ACCLAIM_FLAG) {
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} else if (is_flag(ACCLAIM_FLAG)) {
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restore_buf(fd, boot.map_addr, ACCLAIM_PRE_HEADER_SZ);
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}
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@ -473,7 +488,7 @@ void repack(const char* src_img, const char* out_img, bool nocomp) {
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size_t raw_size;
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void *raw_buf;
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mmap_ro(RAMDISK_FILE, raw_buf, raw_size);
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if (!nocomp && !COMPRESSED_ANY(check_fmt(raw_buf, raw_size)) && COMPRESSED(boot.r_fmt)) {
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if (!skip_comp && !COMPRESSED_ANY(check_fmt(raw_buf, raw_size)) && COMPRESSED(boot.r_fmt)) {
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boot.hdr->ramdisk_size() = compress(boot.r_fmt, fd, raw_buf, raw_size);
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} else {
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boot.hdr->ramdisk_size() = xwrite(fd, raw_buf, raw_size);
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@ -495,7 +510,7 @@ void repack(const char* src_img, const char* out_img, bool nocomp) {
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size_t raw_size;
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void *raw_buf;
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mmap_ro(EXTRA_FILE, raw_buf, raw_size);
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if (!nocomp && !COMPRESSED_ANY(check_fmt(raw_buf, raw_size)) && COMPRESSED(boot.e_fmt)) {
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if (!skip_comp && !COMPRESSED_ANY(check_fmt(raw_buf, raw_size)) && COMPRESSED(boot.e_fmt)) {
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boot.hdr->extra_size() = compress(boot.e_fmt, fd, raw_buf, raw_size);
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} else {
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boot.hdr->extra_size() = xwrite(fd, raw_buf, raw_size);
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@ -557,7 +572,11 @@ void repack(const char* src_img, const char* out_img, bool nocomp) {
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boot.hdr->ramdisk_size() += sizeof(*hdr);
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}
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// Make sure header size matches
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boot.hdr->header_size() = boot.hdr->hdr_size();
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// Update checksum
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if (char *id = boot.hdr->id()) {
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HASH_CTX ctx;
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is_flag(SHA256_FLAG) ? SHA256_init(&ctx) : SHA_init(&ctx);
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uint32_t size = boot.hdr->kernel_size();
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@ -584,16 +603,15 @@ void repack(const char* src_img, const char* out_img, bool nocomp) {
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HASH_update(&ctx, boot.map_addr + off.dtb, size);
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HASH_update(&ctx, &size, sizeof(size));
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}
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memset(boot.hdr->id(), 0, 32);
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memcpy(boot.hdr->id(), HASH_final(&ctx),
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(boot.flags & SHA256_FLAG) ? SHA256_DIGEST_SIZE : SHA_DIGEST_SIZE);
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boot.hdr->header_size() = boot.hdr->hdr_size();
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memset(id, 0, BOOT_ID_SIZE);
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memcpy(id, HASH_final(&ctx), is_flag(SHA256_FLAG) ? SHA256_DIGEST_SIZE : SHA_DIGEST_SIZE);
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}
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// Print new image info
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boot.hdr->print();
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// Main header
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memcpy(boot.map_addr + off.header, **boot.hdr, boot.hdr->hdr_size());
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memcpy(boot.map_addr + off.header, boot.hdr->raw_hdr(), boot.hdr->hdr_size());
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if (is_flag(DHTB_FLAG)) {
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// DHTB header
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@ -4,9 +4,9 @@
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#include <utility>
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#include "format.hpp"
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/****************
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* Other Headers
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****************/
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/******************
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* Special Headers
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*****************/
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struct mtk_hdr {
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uint32_t magic; /* MTK magic */
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@ -45,8 +45,39 @@ struct blob_hdr {
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* Boot Image Headers
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*********************/
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struct boot_img_hdr_base {
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char magic[8];
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#define BOOT_MAGIC_SIZE 8
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#define BOOT_NAME_SIZE 16
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#define BOOT_ID_SIZE 32
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#define BOOT_ARGS_SIZE 512
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#define BOOT_EXTRA_ARGS_SIZE 1024
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/*
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* +-----------------+
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* | boot header | 1 page
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* +-----------------+
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* | kernel | n pages
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* +-----------------+
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* | ramdisk | m pages
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* +-----------------+
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* | second stage | o pages
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* +-----------------+
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* | extra blob | x pages (non standard)
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* +-----------------+
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* | recovery dtbo | p pages
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* +-----------------+
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* | dtb | q pages
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* +-----------------+
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*
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* n = (kernel_size + page_size - 1) / page_size
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* m = (ramdisk_size + page_size - 1) / page_size
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* o = (second_size + page_size - 1) / page_size
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* p = (recovery_dtbo_size + page_size - 1) / page_size
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* q = (dtb_size + page_size - 1) / page_size
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* x = (extra_size + page_size - 1) / page_size
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*/
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struct boot_img_hdr_common {
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char magic[BOOT_MAGIC_SIZE];
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uint32_t kernel_size; /* size in bytes */
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uint32_t kernel_addr; /* physical load addr */
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@ -58,32 +89,31 @@ struct boot_img_hdr_base {
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uint32_t second_addr; /* physical load addr */
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} __attribute__((packed));
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struct boot_img_hdr_v0 : public boot_img_hdr_base {
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struct boot_img_hdr_v0 : public boot_img_hdr_common {
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uint32_t tags_addr; /* physical addr for kernel tags */
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uint32_t page_size; /* flash page size we assume */
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/* In header v1, this field is used for header version
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* However, on some devices like Samsung, this field is used to store DTB
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* We will treat this field differently based on its value */
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// In header v1, this field is used for header version
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// However, on some devices like Samsung, this field is used to store DTB
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// We treat this field differently based on its value
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union {
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uint32_t header_version; /* the version of the header */
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uint32_t extra_size; /* extra blob size in bytes */
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};
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/* operating system version and security patch level; for
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* version "A.B.C" and patch level "Y-M-D":
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* ver = A << 14 | B << 7 | C (7 bits for each of A, B, C)
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* lvl = ((Y - 2000) & 127) << 4 | M (7 bits for Y, 4 bits for M)
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* os_version = ver << 11 | lvl */
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// Operating system version and security patch level.
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// For version "A.B.C" and patch level "Y-M-D":
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// (7 bits for each of A, B, C; 7 bits for (Y-2000), 4 bits for M)
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// os_version = A[31:25] B[24:18] C[17:11] (Y-2000)[10:4] M[3:0]
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uint32_t os_version;
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char name[16]; /* asciiz product name */
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char cmdline[512];
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char id[32]; /* timestamp / checksum / sha1 / etc */
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char name[BOOT_NAME_SIZE]; /* asciiz product name */
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char cmdline[BOOT_ARGS_SIZE];
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char id[BOOT_ID_SIZE]; /* timestamp / checksum / sha1 / etc */
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/* Supplemental command line data; kept here to maintain
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* binary compatibility with older versions of mkbootimg */
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char extra_cmdline[1024];
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// Supplemental command line data; kept here to maintain
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// binary compatibility with older versions of mkbootimg.
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char extra_cmdline[BOOT_EXTRA_ARGS_SIZE];
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} __attribute__((packed));
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struct boot_img_hdr_v1 : public boot_img_hdr_v0 {
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@ -101,59 +131,54 @@ struct boot_img_hdr_v2 : public boot_img_hdr_v1 {
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using boot_img_hdr = boot_img_hdr_v2;
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// Special Samsung header
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struct boot_img_hdr_pxa : public boot_img_hdr_base {
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struct boot_img_hdr_pxa : public boot_img_hdr_common {
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uint32_t extra_size; /* extra blob size in bytes */
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uint32_t unknown;
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uint32_t tags_addr; /* physical addr for kernel tags */
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uint32_t page_size; /* flash page size we assume */
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char name[24]; /* asciiz product name */
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char cmdline[512];
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char id[32]; /* timestamp / checksum / sha1 / etc */
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char cmdline[BOOT_ARGS_SIZE];
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char id[BOOT_ID_SIZE]; /* timestamp / checksum / sha1 / etc */
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/* Supplemental command line data; kept here to maintain
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* binary compatibility with older versions of mkbootimg */
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char extra_cmdline[1024];
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char extra_cmdline[BOOT_EXTRA_ARGS_SIZE];
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} __attribute__((packed));
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/*
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** +-----------------+
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** | boot header | 1 page
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** +-----------------+
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** | kernel | n pages
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** +-----------------+
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** | ramdisk | m pages
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** +-----------------+
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** | second stage | o pages
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** +-----------------+
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** | extra blob | p pages
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** +-----------------+
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** | recovery dtbo | q pages
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** +-----------------+
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** | dtb | r pages
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** +-----------------+
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**
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** n = (kernel_size + page_size - 1) / page_size
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** m = (ramdisk_size + page_size - 1) / page_size
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** o = (second_size + page_size - 1) / page_size
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** p = (extra_size + page_size - 1) / page_size
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** q = (recovery_dtbo_size + page_size - 1) / page_size
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** r = (dtb_size + page_size - 1) / page_size
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**
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** 0. all entities are page_size aligned in flash
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** 1. kernel and ramdisk are required (size != 0)
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** 2. second is optional (second_size == 0 -> no second)
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** 3. load each element (kernel, ramdisk, second) at
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** the specified physical address (kernel_addr, etc)
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** 4. prepare tags at tag_addr. kernel_args[] is
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** appended to the kernel commandline in the tags.
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** 5. r0 = 0, r1 = MACHINE_TYPE, r2 = tags_addr
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** 6. if second_size != 0: jump to second_addr
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** else: jump to kernel_addr
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*/
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/* When the boot image header has a version of 3, the structure of the boot
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* image is as follows:
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*
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* +---------------------+
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* | boot header | 4096 bytes
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* +---------------------+
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* | kernel | m pages
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* +---------------------+
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* | ramdisk | n pages
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* +---------------------+
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*
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* m = (kernel_size + 4096 - 1) / 4096
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* n = (ramdisk_size + 4096 - 1) / 4096
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*
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* Note that in version 3 of the boot image header, page size is fixed at 4096 bytes.
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*/
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struct boot_img_hdr_v3 {
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uint8_t magic[BOOT_MAGIC_SIZE];
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uint32_t kernel_size; /* size in bytes */
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uint32_t ramdisk_size; /* size in bytes */
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uint32_t os_version;
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uint32_t header_size;
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uint32_t reserved[4];
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uint32_t header_version;
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char cmdline[BOOT_ARGS_SIZE + BOOT_EXTRA_ARGS_SIZE];
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} __attribute__((packed));
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/*******************************
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* Polymorphic Universal Header
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*******************************/
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#define drct_var(name) \
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||||
auto &name() { return img_hdr->name; }
|
||||
#define decl_var(name, len) \
|
||||
virtual uint##len##_t &name() { j##len = 0; return j##len; }
|
||||
#define decl_val(name, type) \
|
||||
@ -161,12 +186,10 @@ virtual type name() { return 0; }
|
||||
|
||||
struct dyn_img_hdr {
|
||||
|
||||
// Direct entries
|
||||
drct_var(kernel_size)
|
||||
drct_var(ramdisk_size)
|
||||
drct_var(second_size)
|
||||
|
||||
// Standard entries
|
||||
decl_var(kernel_size, 32)
|
||||
decl_var(ramdisk_size, 32)
|
||||
decl_var(second_size, 32)
|
||||
decl_var(page_size, 32)
|
||||
decl_val(header_version, uint32_t)
|
||||
decl_var(extra_size, 32)
|
||||
@ -188,20 +211,16 @@ struct dyn_img_hdr {
|
||||
|
||||
virtual size_t hdr_size() = 0;
|
||||
|
||||
boot_img_hdr_base * const &operator* () const {
|
||||
return img_hdr;
|
||||
}
|
||||
|
||||
const void *raw_hdr() const { return raw; }
|
||||
void print();
|
||||
void dump_hdr_file();
|
||||
void load_hdr_file();
|
||||
|
||||
protected:
|
||||
union {
|
||||
/* Main header could be either AOSP or PXA,
|
||||
* but both of them are base headers. */
|
||||
boot_img_hdr_base *img_hdr; /* Common base header */
|
||||
// Main header could be either AOSP or PXA
|
||||
boot_img_hdr_v2 *v2_hdr; /* AOSP v2 header */
|
||||
boot_img_hdr_v3 *v3_hdr; /* AOSP v3 header */
|
||||
boot_img_hdr_pxa *hdr_pxa; /* Samsung PXA header */
|
||||
void *raw; /* Raw pointer */
|
||||
};
|
||||
@ -212,7 +231,6 @@ private:
|
||||
static uint64_t j64;
|
||||
};
|
||||
|
||||
#undef drct_var
|
||||
#undef decl_var
|
||||
#undef decl_val
|
||||
|
||||
@ -227,25 +245,16 @@ size_t hdr_size() override { return sizeof(hdr); }
|
||||
|
||||
#define impl_cls(ver) __impl_cls(dyn_img_##ver, boot_img_hdr_##ver)
|
||||
|
||||
#define impl_val(name) \
|
||||
decltype(std::declval<dyn_img_hdr>().name()) name() override { return hdr_pxa->name; }
|
||||
|
||||
struct dyn_img_pxa : public dyn_img_hdr {
|
||||
impl_cls(pxa)
|
||||
|
||||
impl_val(extra_size)
|
||||
impl_val(page_size)
|
||||
impl_val(name)
|
||||
impl_val(cmdline)
|
||||
impl_val(id)
|
||||
impl_val(extra_cmdline)
|
||||
};
|
||||
|
||||
#undef impl_val
|
||||
#define impl_val(name) \
|
||||
decltype(std::declval<dyn_img_hdr>().name()) name() override { return v2_hdr->name; }
|
||||
|
||||
struct dyn_img_v0 : public dyn_img_hdr {
|
||||
struct dyn_img_common : public dyn_img_hdr {
|
||||
impl_val(kernel_size)
|
||||
impl_val(ramdisk_size)
|
||||
impl_val(second_size)
|
||||
};
|
||||
|
||||
struct dyn_img_v0 : public dyn_img_common {
|
||||
impl_cls(v0)
|
||||
|
||||
impl_val(page_size)
|
||||
@ -265,9 +274,7 @@ struct dyn_img_v1 : public dyn_img_v0 {
|
||||
impl_val(recovery_dtbo_offset)
|
||||
impl_val(header_size)
|
||||
|
||||
uint32_t &extra_size() override {
|
||||
return dyn_img_hdr::extra_size();
|
||||
}
|
||||
uint32_t &extra_size() override { return dyn_img_hdr::extra_size(); }
|
||||
};
|
||||
|
||||
struct dyn_img_v2 : public dyn_img_v1 {
|
||||
@ -276,11 +283,51 @@ struct dyn_img_v2 : public dyn_img_v1 {
|
||||
impl_val(dtb_size)
|
||||
};
|
||||
|
||||
#undef impl_val
|
||||
#define impl_val(name) \
|
||||
decltype(std::declval<dyn_img_hdr>().name()) name() override { return hdr_pxa->name; }
|
||||
|
||||
struct dyn_img_pxa : public dyn_img_common {
|
||||
impl_cls(pxa)
|
||||
|
||||
impl_val(extra_size)
|
||||
impl_val(page_size)
|
||||
impl_val(name)
|
||||
impl_val(cmdline)
|
||||
impl_val(id)
|
||||
impl_val(extra_cmdline)
|
||||
};
|
||||
|
||||
#undef impl_val
|
||||
#define impl_val(name) \
|
||||
decltype(std::declval<dyn_img_hdr>().name()) name() override { return v3_hdr->name; }
|
||||
|
||||
struct dyn_img_v3 : public dyn_img_hdr {
|
||||
impl_cls(v3)
|
||||
|
||||
impl_val(kernel_size)
|
||||
impl_val(ramdisk_size)
|
||||
impl_val(os_version)
|
||||
impl_val(header_size)
|
||||
impl_val(header_version)
|
||||
impl_val(cmdline)
|
||||
|
||||
// Make API compatible
|
||||
uint32_t &page_size() override { page_sz = 4096; return page_sz; }
|
||||
char *extra_cmdline() override { return &v3_hdr->cmdline[BOOT_ARGS_SIZE]; }
|
||||
|
||||
private:
|
||||
uint32_t page_sz;
|
||||
};
|
||||
|
||||
#undef __impl_cls
|
||||
#undef impl_cls
|
||||
#undef impl_val
|
||||
|
||||
// Flags
|
||||
/******************
|
||||
* Full Boot Image
|
||||
******************/
|
||||
|
||||
#define MTK_KERNEL (1 << 0)
|
||||
#define MTK_RAMDISK (1 << 1)
|
||||
#define CHROMEOS_FLAG (1 << 2)
|
||||
|
||||
@ -12,8 +12,8 @@
|
||||
#define DTB_FILE "dtb"
|
||||
#define NEW_BOOT "new-boot.img"
|
||||
|
||||
int unpack(const char *image, bool nodecomp = false, bool hdr = false);
|
||||
void repack(const char* src_img, const char* out_img, bool nocomp = false);
|
||||
int unpack(const char *image, bool skip_decomp = false, bool hdr = false);
|
||||
void repack(const char* src_img, const char* out_img, bool skip_comp = false);
|
||||
int split_image_dtb(const char *filename);
|
||||
int hexpatch(const char *image, const char *from, const char *to);
|
||||
int cpio_commands(int argc, char *argv[]);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user