#include #include #include #include #include #include #include #include #include static_assert(sizeof(uint64_t) == 8, "uint64_t 8 bytes"); static_assert(sizeof(void*) == 8, "void* 8 bytes"); void dumpBuf(void* buf, size_t bufSize, const char* outFile) { int flags = O_WRONLY | O_CREAT | O_TRUNC | O_CLOEXEC; printf("dumping buffer to %s...\n", outFile); auto fd = open(outFile, flags, 0644); if (fd == -1) { printf("fail to open file %s(%s)\n", outFile, strerror(errno)); exit(1); } size_t bytesWrite = write(fd, (char*)buf, bufSize); if (bytesWrite != bufSize) { printf("write failed. exp=%zu, act=%ld\n", bufSize, bytesWrite); exit(2); } close(fd); } int main(int, char**) { size_t bufSize = 256; uint64_t buf = reinterpret_cast(malloc(bufSize)); uint32_t bootConfigSize = 0; if (!buf) { printf("malloc failed\n"); exit(1); } { // param1 char* ANDROID_BOOT_PARAM = (char*)"androidboot.xx=yy\n"; auto ret = addBootConfigParameters(ANDROID_BOOT_PARAM, strlen(ANDROID_BOOT_PARAM), buf, bootConfigSize); if (ret <= 0) { printf("fail to apply boot config params\n"); exit(1); } else { printf("addBootConfigParameters() ret = %d\n", ret); bootConfigSize += ret; } dumpBuf((void*)buf, bufSize, "tmp.1"); } { // param2 char* param2 = (char*)"k1=v1\nk2=v2\nk3=v3\n"; auto ret = addBootConfigParameters(param2, strlen(param2), buf, bootConfigSize); if (ret <= 0) { printf("fail to apply boot config param2\n"); exit(1); } else { printf("addBootConfigParameters() ret = %d\n", ret); bootConfigSize += ret; } dumpBuf((void*)buf, bufSize, "tmp.2"); } { // param3 char* param3 = (char*)"vendorboot_k1=vendorboot_v1\nvendorboot_k2=vendorboot_v2\nvendorboot_k3=" "vendorboot_v3\n"; auto ret = addBootConfigParameters(param3, strlen(param3), buf, bootConfigSize); if (ret <= 0) { printf("fail to apply boot config param3\n"); exit(1); } else { printf("addBootConfigParameters() ret = %d\n", ret); bootConfigSize += ret; } dumpBuf((void*)buf, bufSize, "tmp.3"); dumpBuf((void*)buf, bootConfigSize, "tmp.final"); } free((void*)buf); return 0; }