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Fix Pixel C flashing errors

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Use return values instead of creating a file to indicate a chromeos image
Fix #264
This commit is contained in:
topjohnwu 2017-07-13 02:14:10 +08:00
parent c07bac9a63
commit c4d7001489
8 changed files with 318 additions and 337 deletions
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4
jni/magiskboot/Android.mk
View File

@ -12,10 +12,8 @@ LOCAL_C_INCLUDES := \
LOCAL_SRC_FILES := \
main.c \
unpack.c \
repack.c \
bootimg.c \
hexpatch.c \
parseimg.c \
compress.c \
boot_utils.c \
cpio.c \

49
jni/magiskboot/boot_utils.c
View File

@ -82,55 +82,6 @@ int open_new(const char *filename) {
return xopen(filename, O_WRONLY | O_CREAT | O_TRUNC, 0644);
}
void print_info() {
printf("KERNEL [%d] @ 0x%08x\n", hdr.kernel_size, hdr.kernel_addr);
printf("RAMDISK [%d] @ 0x%08x\n", hdr.ramdisk_size, hdr.ramdisk_addr);
printf("SECOND [%d] @ 0x%08x\n", hdr.second_size, hdr.second_addr);
printf("DTB [%d] @ 0x%08x\n", hdr.dt_size, hdr.tags_addr);
printf("PAGESIZE [%d]\n", hdr.page_size);
if (hdr.os_version != 0) {
int a,b,c,y,m = 0;
int os_version, os_patch_level;
os_version = hdr.os_version >> 11;
os_patch_level = hdr.os_version & 0x7ff;
a = (os_version >> 14) & 0x7f;
b = (os_version >> 7) & 0x7f;
c = os_version & 0x7f;
printf("OS_VERSION [%d.%d.%d]\n", a, b, c);
y = (os_patch_level >> 4) + 2000;
m = os_patch_level & 0xf;
printf("PATCH_LEVEL [%d-%02d]\n", y, m);
}
printf("NAME [%s]\n", hdr.name);
printf("CMDLINE [%s]\n", hdr.cmdline);
switch (ramdisk_type) {
case GZIP:
printf("COMPRESSION [%s]\n", "gzip");
break;
case XZ:
printf("COMPRESSION [%s]\n", "xz");
break;
case LZMA:
printf("COMPRESSION [%s]\n", "lzma");
break;
case BZIP2:
printf("COMPRESSION [%s]\n", "bzip2");
break;
case LZ4:
printf("COMPRESSION [%s]\n", "lz4");
break;
case LZ4_LEGACY:
printf("COMPRESSION [%s]\n", "lz4_legacy");
break;
default:
fprintf(stderr, "Unknown ramdisk format!\n");
}
printf("\n");
}
void cleanup() {
printf("Cleaning up...\n");
char name[PATH_MAX];

310
jni/magiskboot/bootimg.c Normal file
View File

@ -0,0 +1,310 @@
#include "bootimg.h"
#include "magiskboot.h"
static unsigned char *kernel, *ramdisk, *second, *dtb, *extra;
static boot_img_hdr hdr;
static int mtk_kernel = 0, mtk_ramdisk = 0;
static file_t ramdisk_type;
static void dump(unsigned char *buf, size_t size, const char *filename) {
int fd = open_new(filename);
xwrite(fd, buf, size);
close(fd);
}
static size_t restore(const char *filename, int fd) {
int ifd = xopen(filename, O_RDONLY);
size_t size = lseek(ifd, 0, SEEK_END);
lseek(ifd, 0, SEEK_SET);
xsendfile(fd, ifd, NULL, size);
close(ifd);
return size;
}
static void restore_buf(int fd, const void *buf, size_t size) {
xwrite(fd, buf, size);
}
static void print_info() {
printf("KERNEL [%d] @ 0x%08x\n", hdr.kernel_size, hdr.kernel_addr);
printf("RAMDISK [%d] @ 0x%08x\n", hdr.ramdisk_size, hdr.ramdisk_addr);
printf("SECOND [%d] @ 0x%08x\n", hdr.second_size, hdr.second_addr);
printf("DTB [%d] @ 0x%08x\n", hdr.dt_size, hdr.tags_addr);
printf("PAGESIZE [%d]\n", hdr.page_size);
if (hdr.os_version != 0) {
int a,b,c,y,m = 0;
int os_version, os_patch_level;
os_version = hdr.os_version >> 11;
os_patch_level = hdr.os_version & 0x7ff;
a = (os_version >> 14) & 0x7f;
b = (os_version >> 7) & 0x7f;
c = os_version & 0x7f;
printf("OS_VERSION [%d.%d.%d]\n", a, b, c);
y = (os_patch_level >> 4) + 2000;
m = os_patch_level & 0xf;
printf("PATCH_LEVEL [%d-%02d]\n", y, m);
}
printf("NAME [%s]\n", hdr.name);
printf("CMDLINE [%s]\n", hdr.cmdline);
switch (ramdisk_type) {
case GZIP:
printf("COMPRESSION [%s]\n", "gzip");
break;
case XZ:
printf("COMPRESSION [%s]\n", "xz");
break;
case LZMA:
printf("COMPRESSION [%s]\n", "lzma");
break;
case BZIP2:
printf("COMPRESSION [%s]\n", "bzip2");
break;
case LZ4:
printf("COMPRESSION [%s]\n", "lz4");
break;
case LZ4_LEGACY:
printf("COMPRESSION [%s]\n", "lz4_legacy");
break;
default:
fprintf(stderr, "Unknown ramdisk format!\n");
}
printf("\n");
}
int parse_img(unsigned char *orig, size_t size) {
unsigned char *base, *end;
size_t pos = 0;
int ret = 0;
for(base = orig, end = orig + size; base < end; base += 256, size -= 256) {
switch (check_type(base)) {
case CHROMEOS:
// The caller should know it's chromeos, as it needs additional signing
ret = 2;
continue;
case ELF32:
exit(3);
case ELF64:
exit(4);
case AOSP:
// Read the header
memcpy(&hdr, base, sizeof(hdr));
pos += hdr.page_size;
// Kernel position
kernel = base + pos;
pos += hdr.kernel_size;
mem_align(&pos, hdr.page_size);
// Ramdisk position
ramdisk = base + pos;
pos += hdr.ramdisk_size;
mem_align(&pos, hdr.page_size);
if (hdr.second_size) {
// Second position
second = base + pos;
pos += hdr.second_size;
mem_align(&pos, hdr.page_size);
}
if (hdr.dt_size) {
// dtb position
dtb = base + pos;
pos += hdr.dt_size;
mem_align(&pos, hdr.page_size);
}
if (pos < size) {
extra = base + pos;
}
// Check ramdisk compression type
ramdisk_type = check_type(ramdisk);
// Check MTK
if (check_type(kernel) == MTK) {
printf("MTK header found in kernel\n");
mtk_kernel = 1;
}
if (ramdisk_type == MTK) {
printf("MTK header found in ramdisk\n");
mtk_ramdisk = 1;
ramdisk_type = check_type(ramdisk + 512);
}
// Print info
print_info();
return ret;
default:
continue;
}
}
LOGE(1, "No boot image magic found!\n");
}
void unpack(const char* image) {
size_t size;
unsigned char *orig;
mmap_ro(image, &orig, &size);
// Parse image
printf("Parsing boot image: [%s]\n\n", image);
int ret = parse_img(orig, size);
// Dump kernel
if (mtk_kernel) {
kernel += 512;
hdr.kernel_size -= 512;
}
dump(kernel, hdr.kernel_size, KERNEL_FILE);
// Dump ramdisk
if (mtk_ramdisk) {
ramdisk += 512;
hdr.ramdisk_size -= 512;
}
if (decomp(ramdisk_type, RAMDISK_FILE, ramdisk, hdr.ramdisk_size)) {
// Dump the compressed ramdisk
dump(ramdisk, hdr.ramdisk_size, RAMDISK_FILE ".unsupport");
LOGE(1, "Unsupported ramdisk format! Dumped to %s\n", RAMDISK_FILE ".unsupport");
}
if (hdr.second_size) {
// Dump second
dump(second, hdr.second_size, SECOND_FILE);
}
if (hdr.dt_size) {
// Dump dtb
dump(dtb, hdr.dt_size, DTB_FILE);
}
munmap(orig, size);
exit(ret);
}
void repack(const char* orig_image, const char* out_image) {
size_t size;
unsigned char *orig;
char name[PATH_MAX];
// There are possible two MTK headers
mtk_hdr mtk_kernel_hdr, mtk_ramdisk_hdr;
size_t mtk_kernel_off, mtk_ramdisk_off;
// Load original image
mmap_ro(orig_image, &orig, &size);
// Parse original image
printf("Parsing boot image: [%s]\n\n", orig_image);
parse_img(orig, size);
printf("Repack to boot image: [%s]\n\n", out_image);
// Create new image
int fd = open_new(out_image);
// Set all sizes to 0
hdr.kernel_size = 0;
hdr.ramdisk_size = 0;
hdr.second_size = 0;
hdr.dt_size = 0;
// Skip a page for header
write_zero(fd, hdr.page_size);
// Restore kernel
if (mtk_kernel) {
mtk_kernel_off = lseek(fd, 0, SEEK_CUR);
restore_buf(fd, kernel, 512);
memcpy(&mtk_kernel_hdr, kernel, sizeof(mtk_kernel_hdr));
}
hdr.kernel_size = restore(KERNEL_FILE, fd);
file_align(fd, hdr.page_size, 1);
// Restore ramdisk
if (mtk_ramdisk) {
mtk_ramdisk_off = lseek(fd, 0, SEEK_CUR);
restore_buf(fd, ramdisk, 512);
memcpy(&mtk_ramdisk_hdr, ramdisk, sizeof(mtk_ramdisk_hdr));
}
if (access(RAMDISK_FILE, R_OK) == 0) {
// If we found raw cpio, compress to original format
// Before we start, clean up previous compressed files
for (int i = 0; SUP_EXT_LIST[i]; ++i) {
sprintf(name, "%s.%s", RAMDISK_FILE, SUP_EXT_LIST[i]);
unlink(name);
}
size_t cpio_size;
unsigned char *cpio;
mmap_ro(RAMDISK_FILE, &cpio, &cpio_size);
if (comp(ramdisk_type, RAMDISK_FILE, cpio, cpio_size))
LOGE(1, "Unsupported ramdisk format!\n");
munmap(cpio, cpio_size);
}
int found = 0;
for (int i = 0; SUP_EXT_LIST[i]; ++i) {
sprintf(name, "%s.%s", RAMDISK_FILE, SUP_EXT_LIST[i]);
if (access(name, R_OK) == 0) {
ramdisk_type = SUP_TYPE_LIST[i];
found = 1;
break;
}
}
if (!found)
LOGE(1, "No ramdisk exists!\n");
hdr.ramdisk_size = restore(name, fd);
file_align(fd, hdr.page_size, 1);
// Restore second
if (access(SECOND_FILE, R_OK) == 0) {
hdr.second_size = restore(SECOND_FILE, fd);
file_align(fd, hdr.page_size, 1);
}
// Restore dtb
if (access(DTB_FILE, R_OK) == 0) {
hdr.dt_size = restore(DTB_FILE, fd);
file_align(fd, hdr.page_size, 1);
}
// Check extra info, currently only for LG Bump and Samsung SEANDROIDENFORCE
if (extra) {
if (memcmp(extra, "SEANDROIDENFORCE", 16) == 0 ||
memcmp(extra, "\x41\xa9\xe4\x67\x74\x4d\x1d\x1b\xa4\x29\xf2\xec\xea\x65\x52\x79", 16) == 0 ) {
restore_buf(fd, extra, 16);
}
}
// Write headers back
if (mtk_kernel) {
lseek(fd, mtk_kernel_off, SEEK_SET);
mtk_kernel_hdr.size = hdr.kernel_size;
hdr.kernel_size += 512;
restore_buf(fd, &mtk_kernel_hdr, sizeof(mtk_kernel_hdr));
}
if (mtk_ramdisk) {
lseek(fd, mtk_ramdisk_off, SEEK_SET);
mtk_ramdisk_hdr.size = hdr.ramdisk_size;
hdr.ramdisk_size += 512;
restore_buf(fd, &mtk_ramdisk_hdr, sizeof(mtk_ramdisk_hdr));
}
// Main header
lseek(fd, 0, SEEK_SET);
restore_buf(fd, &hdr, sizeof(hdr));
// Print new image info
print_info();
munmap(orig, size);
close(fd);
}

9
jni/magiskboot/magiskboot.h
View File

@ -62,17 +62,11 @@ extern char *SUP_LIST[];
extern char *SUP_EXT_LIST[];
extern file_t SUP_TYPE_LIST[];
// Global variables
extern unsigned char *kernel, *ramdisk, *second, *dtb, *extra;
extern boot_img_hdr hdr;
extern file_t ramdisk_type;
extern int mtk_kernel, mtk_ramdisk;
// Main entries
void unpack(const char *image);
void repack(const char* orig_image, const char* out_image);
void hexpatch(const char *image, const char *from, const char *to);
void parse_img(unsigned char *orig, size_t size);
int parse_img(unsigned char *orig, size_t size);
int cpio_commands(const char *command, int argc, char *argv[]);
void cleanup();
@ -95,6 +89,5 @@ void write_zero(int fd, size_t size);
void mem_align(size_t *pos, size_t align);
void file_align(int fd, size_t align, int out);
int open_new(const char *filename);
void print_info();
#endif

91
jni/magiskboot/parseimg.c
View File

@ -1,91 +0,0 @@
#include "bootimg.h"
#include "magiskboot.h"
unsigned char *kernel, *ramdisk, *second, *dtb, *extra;
boot_img_hdr hdr;
int mtk_kernel = 0, mtk_ramdisk = 0;
file_t ramdisk_type;
static void check_headers() {
// Check ramdisk compression type
ramdisk_type = check_type(ramdisk);
// Check MTK
if (check_type(kernel) == MTK) {
printf("MTK header found in kernel\n");
mtk_kernel = 1;
}
if (ramdisk_type == MTK) {
printf("MTK header found in ramdisk\n");
mtk_ramdisk = 1;
ramdisk_type = check_type(ramdisk + 512);
}
// Print info
print_info();
}
static void parse_aosp(unsigned char *base, size_t size) {
// printf("IMG [AOSP]\n");
size_t pos = 0;
// Read the header
memcpy(&hdr, base, sizeof(hdr));
pos += hdr.page_size;
// Kernel position
kernel = base + pos;
pos += hdr.kernel_size;
mem_align(&pos, hdr.page_size);
// Ramdisk position
ramdisk = base + pos;
pos += hdr.ramdisk_size;
mem_align(&pos, hdr.page_size);
if (hdr.second_size) {
// Second position
second = base + pos;
pos += hdr.second_size;
mem_align(&pos, hdr.page_size);
}
if (hdr.dt_size) {
// dtb position
dtb = base + pos;
pos += hdr.dt_size;
mem_align(&pos, hdr.page_size);
}
if (pos < size) {
extra = base + pos;
}
check_headers();
}
void parse_img(unsigned char *orig, size_t size) {
unsigned char *base, *end;
for(base = orig, end = orig + size; base < end; base += 256, size -= 256) {
switch (check_type(base)) {
case CHROMEOS:
// The caller should know it's chromeos, as it needs additional signing
close(open_new("chromeos"));
continue;
case ELF32:
exit(2);
return;
case ELF64:
exit(3);
return;
case AOSP:
parse_aosp(base, size);
return;
default:
continue;
}
}
LOGE(1, "No boot image magic found!\n");
}

136
jni/magiskboot/repack.c
View File

@ -1,136 +0,0 @@
#include "magiskboot.h"
static size_t restore(const char *filename, int fd) {
int ifd = xopen(filename, O_RDONLY);
size_t size = lseek(ifd, 0, SEEK_END);
lseek(ifd, 0, SEEK_SET);
xsendfile(fd, ifd, NULL, size);
close(ifd);
return size;
}
static void restore_buf(int fd, const void *buf, size_t size) {
xwrite(fd, buf, size);
}
void repack(const char* orig_image, const char* out_image) {
size_t size;
unsigned char *orig;
char name[PATH_MAX];
// There are possible two MTK headers
mtk_hdr mtk_kernel_hdr, mtk_ramdisk_hdr;
size_t mtk_kernel_off, mtk_ramdisk_off;
// Load original image
mmap_ro(orig_image, &orig, &size);
// Parse original image
printf("Parsing boot image: [%s]\n\n", orig_image);
parse_img(orig, size);
printf("Repack to boot image: [%s]\n\n", out_image);
// Create new image
int fd = open_new(out_image);
// Set all sizes to 0
hdr.kernel_size = 0;
hdr.ramdisk_size = 0;
hdr.second_size = 0;
hdr.dt_size = 0;
// Skip a page for header
write_zero(fd, hdr.page_size);
// Restore kernel
if (mtk_kernel) {
mtk_kernel_off = lseek(fd, 0, SEEK_CUR);
restore_buf(fd, kernel, 512);
memcpy(&mtk_kernel_hdr, kernel, sizeof(mtk_kernel_hdr));
}
hdr.kernel_size = restore(KERNEL_FILE, fd);
file_align(fd, hdr.page_size, 1);
// Restore ramdisk
if (mtk_ramdisk) {
mtk_ramdisk_off = lseek(fd, 0, SEEK_CUR);
restore_buf(fd, ramdisk, 512);
memcpy(&mtk_ramdisk_hdr, ramdisk, sizeof(mtk_ramdisk_hdr));
}
if (access(RAMDISK_FILE, R_OK) == 0) {
// If we found raw cpio, compress to original format
// Before we start, clean up previous compressed files
for (int i = 0; SUP_EXT_LIST[i]; ++i) {
sprintf(name, "%s.%s", RAMDISK_FILE, SUP_EXT_LIST[i]);
unlink(name);
}
size_t cpio_size;
unsigned char *cpio;
mmap_ro(RAMDISK_FILE, &cpio, &cpio_size);
if (comp(ramdisk_type, RAMDISK_FILE, cpio, cpio_size))
LOGE(1, "Unsupported ramdisk format!\n");
munmap(cpio, cpio_size);
}
int found = 0;
for (int i = 0; SUP_EXT_LIST[i]; ++i) {
sprintf(name, "%s.%s", RAMDISK_FILE, SUP_EXT_LIST[i]);
if (access(name, R_OK) == 0) {
ramdisk_type = SUP_TYPE_LIST[i];
found = 1;
break;
}
}
if (!found)
LOGE(1, "No ramdisk exists!\n");
hdr.ramdisk_size = restore(name, fd);
file_align(fd, hdr.page_size, 1);
// Restore second
if (access(SECOND_FILE, R_OK) == 0) {
hdr.second_size = restore(SECOND_FILE, fd);
file_align(fd, hdr.page_size, 1);
}
// Restore dtb
if (access(DTB_FILE, R_OK) == 0) {
hdr.dt_size = restore(DTB_FILE, fd);
file_align(fd, hdr.page_size, 1);
}
// Check extra info, currently only for LG Bump and Samsung SEANDROIDENFORCE
if (extra) {
if (memcmp(extra, "SEANDROIDENFORCE", 16) == 0 ||
memcmp(extra, "\x41\xa9\xe4\x67\x74\x4d\x1d\x1b\xa4\x29\xf2\xec\xea\x65\x52\x79", 16) == 0 ) {
restore_buf(fd, extra, 16);
}
}
// Write headers back
if (mtk_kernel) {
lseek(fd, mtk_kernel_off, SEEK_SET);
mtk_kernel_hdr.size = hdr.kernel_size;
hdr.kernel_size += 512;
restore_buf(fd, &mtk_kernel_hdr, sizeof(mtk_kernel_hdr));
}
if (mtk_ramdisk) {
lseek(fd, mtk_ramdisk_off, SEEK_SET);
mtk_ramdisk_hdr.size = hdr.ramdisk_size;
hdr.ramdisk_size += 512;
restore_buf(fd, &mtk_ramdisk_hdr, sizeof(mtk_ramdisk_hdr));
}
// Main header
lseek(fd, 0, SEEK_SET);
restore_buf(fd, &hdr, sizeof(hdr));
// Print new image info
print_info();
munmap(orig, size);
close(fd);
}

48
jni/magiskboot/unpack.c
View File

@ -1,48 +0,0 @@
#include "magiskboot.h"
static void dump(unsigned char *buf, size_t size, const char *filename) {
int fd = open_new(filename);
xwrite(fd, buf, size);
close(fd);
}
void unpack(const char* image) {
size_t size;
unsigned char *orig;
mmap_ro(image, &orig, &size);
// Parse image
printf("Parsing boot image: [%s]\n\n", image);
parse_img(orig, size);
// Dump kernel
if (mtk_kernel) {
kernel += 512;
hdr.kernel_size -= 512;
}
dump(kernel, hdr.kernel_size, KERNEL_FILE);
// Dump ramdisk
if (mtk_ramdisk) {
ramdisk += 512;
hdr.ramdisk_size -= 512;
}
if (decomp(ramdisk_type, RAMDISK_FILE, ramdisk, hdr.ramdisk_size)) {
// Dump the compressed ramdisk
dump(ramdisk, hdr.ramdisk_size, RAMDISK_FILE ".unsupport");
LOGE(1, "Unsupported ramdisk format! Dumped to %s\n", RAMDISK_FILE ".unsupport");
}
if (hdr.second_size) {
// Dump second
dump(second, hdr.second_size, SECOND_FILE);
}
if (hdr.dt_size) {
// Dump dtb
dump(dtb, hdr.dt_size, DTB_FILE);
}
munmap(orig, size);
}

8
scripts/boot_patch.sh
View File

@ -119,15 +119,19 @@ chmod +x ./*
ui_print_wrap "- Unpacking boot image"
./magiskboot --unpack "$BOOTIMAGE"
CHROMEOS=false
case $? in
1 )
abort_wrap "! Unable to unpack boot image"
;;
2 )
CHROMEOS=true
;;
3 )
ui_print_wrap "! Sony ELF32 format detected"
abort_wrap "! Please use BootBridge from @AdrianDC to flash Magisk"
;;
3 )
4 )
ui_print_wrap "! Sony ELF64 format detected"
abort_wrap "! Stock kernel cannot be patched, please use a custom kernel"
esac
@ -234,7 +238,7 @@ ui_print_wrap "- Repacking boot image"
./magiskboot --repack "$BOOTIMAGE" || abort_wrap "! Unable to repack boot image!"
# Sign chromeos boot
if [ -f chromeos ]; then
if $CHROMEOS; then
echo > empty
./chromeos/futility vbutil_kernel --pack new-boot.img.signed \