| // Copyright 2017 syzkaller project authors. All rights reserved. |
| // Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file. |
| |
| // +build |
| |
| #define SYZ_EXECUTOR |
| #include "common_akaros.h" |
| |
| #include "executor_posix.h" |
| |
| #include "executor.h" |
| |
| #include "syscalls_akaros.h" |
| |
| #include <sys/mman.h> |
| |
| uint32 output; |
| |
| int main(int argc, char** argv) |
| { |
| if (argc == 2 && strcmp(argv[1], "version") == 0) { |
| puts(GOOS " " GOARCH " " SYZ_REVISION " " GIT_REVISION); |
| return 0; |
| } |
| |
| if (mmap((void*)SYZ_DATA_OFFSET, SYZ_NUM_PAGES * SYZ_PAGE_SIZE, PROT_READ | PROT_WRITE, |
| MAP_ANON | MAP_PRIVATE | MAP_FIXED, -1, 0) != (void*)SYZ_DATA_OFFSET) |
| fail("mmap of data segment failed"); |
| |
| use_temporary_dir(); |
| install_segv_handler(); |
| setup_control_pipes(); |
| receive_handshake(); |
| reply_handshake(); |
| |
| for (;;) { |
| receive_execute(true); |
| char cwdbuf[128] = "/syz-tmpXXXXXX"; |
| mkdtemp(cwdbuf); |
| int pid = fork(); |
| if (pid < 0) |
| fail("fork failed"); |
| if (pid == 0) { |
| close(kInPipeFd); |
| close(kOutPipeFd); |
| if (chdir(cwdbuf)) |
| fail("chdir failed"); |
| execute_one(); |
| doexit(0); |
| } |
| int status = 0; |
| uint64 start = current_time_ms(); |
| for (;;) { |
| int res = waitpid(pid, &status, WNOHANG); |
| if (res == pid) |
| break; |
| sleep_ms(10); |
| uint64 now = current_time_ms(); |
| if (now - start < 3 * 1000) |
| continue; |
| kill(pid, SIGKILL); |
| while (waitpid(pid, &status, 0) != pid) { |
| } |
| break; |
| } |
| status = WEXITSTATUS(status); |
| if (status == kFailStatus) |
| fail("child failed"); |
| if (status == kErrorStatus) |
| error("child errored"); |
| remove_dir(cwdbuf); |
| reply_execute(0); |
| } |
| return 0; |
| } |
| |
| long execute_syscall(call_t* c, long a0, long a1, long a2, long a3, long a4, long a5, long a6, long a7, long a8) |
| { |
| return syscall(c->sys_nr, a0, a1, a2, a3, a4, a5, a6, a7, a8); |
| } |
| |
| void cover_open() |
| { |
| } |
| |
| void cover_enable(thread_t* th) |
| { |
| } |
| |
| void cover_reset(thread_t* th) |
| { |
| } |
| |
| uint32 read_cover_size(thread_t* th) |
| { |
| return 0; |
| } |
| |
| uint32* write_output(uint32 v) |
| { |
| return &output; |
| } |
| |
| void write_completed(uint32 completed) |
| { |
| } |
| |
| bool kcov_comparison_t::ignore() const |
| { |
| return false; |
| } |