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Add basic cpio features

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topjohnwu
2017-03-08 00:54:23 +08:00
parent a4ce9f6f05
commit 1e3bcfc8cd
8 changed files with 367 additions and 75 deletions
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18
jni/magiskboot/repack.c
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@@ -20,20 +20,20 @@ static void restore_buf(const void *buf, size_t size, int fd) {
}
}
void repack(const char* image) {
void repack(const char* orig_image, const char* out_image) {
size_t size;
unsigned char *orig;
char name[PATH_MAX];
// Load original image
mmap_ro(image, &orig, &size);
mmap_ro(orig_image, &orig, &size);
// Parse original image
printf("\nParsing boot image: [%s]\n\n", image);
printf("\nParsing boot image: [%s]\n\n", orig_image);
parse_img(orig, size);
// Create new image
int fd = open_new(NEW_BOOT);
int fd = open_new(out_image);
// Set all sizes to 0
hdr.kernel_size = 0;
@@ -51,7 +51,7 @@ void repack(const char* image) {
hdr.kernel_size += 512;
}
hdr.kernel_size += restore(KERNEL_FILE, fd);
file_align(fd, hdr.page_size);
file_align(fd, hdr.page_size, 1);
// Restore ramdisk
if (mtk_ramdisk) {
@@ -90,22 +90,22 @@ void repack(const char* image) {
if (!found)
error(1, "No ramdisk exists!");
hdr.ramdisk_size += restore(name, fd);
file_align(fd, hdr.page_size);
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);
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);
file_align(fd, hdr.page_size, 1);
}
// Write header back
printf("\nRepack to boot image: [%s]\n\n", NEW_BOOT);
printf("\nRepack to boot image: [%s]\n\n", out_image);
print_info();
lseek(fd, 0, SEEK_SET);
write(fd, &hdr, sizeof(hdr));