executor: remove unused file

Leftover after "executor: overhaul".

1 files changed, 0 insertions, 240 deletions

diff --git a/executor/executor_bsd.cc b/executor/executor_bsd.cc
deleted file mode 100644
index f55dccd54..000000000
--- a/executor/executor_bsd.cc
+++ /dev/null
@@ -1,240 +0,0 @@
-// 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_bsd.h"
-
-#include "executor_posix.h"
-
-// This file is used by both freebsd and netbsd (as a link to executor_bsd.cc).
-#if defined(__FreeBSD__)
-#include "syscalls_freebsd.h"
-#elif defined(__NetBSD__)
-#include "syscalls_netbsd.h"
-#else
-// This is just so that "make executor TARGETOS=freebsd" works on linux.
-#include "syscalls_freebsd.h"
-#define __syscall syscall
-#endif
-
-#include "executor.h"
-
-#include <fcntl.h>
-#include <signal.h>
-#include <sys/ioctl.h>
-#include <sys/mman.h>
-#include <sys/resource.h>
-#include <sys/time.h>
-#include <sys/types.h>
-
-#if defined(__FreeBSD__)
-#define KIOENABLE _IOW('c', 2, int) // Enable coverage recording
-#define KIODISABLE _IO('c', 3) // Disable coverage recording
-#define KIOSETBUFSIZE _IOW('c', 4, unsigned int) // Set the buffer size
-
-#define KCOV_MODE_NONE -1
-#define KCOV_MODE_TRACE_PC 0
-#define KCOV_MODE_TRACE_CMP 1
-#endif
-
-const int kInFd = 3;
-const int kOutFd = 4;
-
-uint32* output_data;
-uint32* output_pos;
-
-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(&input_data[0], kMaxInput, PROT_READ, MAP_PRIVATE | MAP_FIXED, kInFd, 0) != &input_data[0])
-		fail("mmap of input file failed");
-	// The output region is the only thing in executor process for which consistency matters.
-	// If it is corrupted ipc package will fail to parse its contents and panic.
-	// But fuzzer constantly invents new ways of how to currupt the region,
-	// so we map the region at a (hopefully) hard to guess address surrounded by unmapped pages.
-	void* const kOutputDataAddr = (void*)0x1ddbc20000;
-	output_data = (uint32*)mmap(kOutputDataAddr, kMaxOutput, PROT_READ | PROT_WRITE, MAP_SHARED | MAP_FIXED, kOutFd, 0);
-	if (output_data != kOutputDataAddr)
-		fail("mmap of output file failed");
-	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");
-	// Prevent random programs to mess with these fds.
-	// Due to races in collider mode, a program can e.g. ftruncate one of these fds,
-	// which will cause fuzzer to crash.
-	// That's also the reason why we close kInPipeFd/kOutPipeFd below.
-	close(kInFd);
-	close(kOutFd);
-
-	// Some minimal sandboxing.
-	struct rlimit rlim;
-#ifndef __NetBSD__
-	// This causes frequent random aborts on netbsd. Reason unknown.
-	rlim.rlim_cur = rlim.rlim_max = 128 << 20;
-	setrlimit(RLIMIT_AS, &rlim);
-#endif
-	rlim.rlim_cur = rlim.rlim_max = 8 << 20;
-	setrlimit(RLIMIT_MEMLOCK, &rlim);
-	rlim.rlim_cur = rlim.rlim_max = 1 << 20;
-	setrlimit(RLIMIT_FSIZE, &rlim);
-	rlim.rlim_cur = rlim.rlim_max = 1 << 20;
-	setrlimit(RLIMIT_STACK, &rlim);
-	rlim.rlim_cur = rlim.rlim_max = 0;
-	setrlimit(RLIMIT_CORE, &rlim);
-
-	const int nfiles = 1 << 8;
-	if (kInPipeFd >= nfiles)
-		fail("RLIMIT_NOFILE too low: %d > %d", kInPipeFd, nfiles);
-	rlim.rlim_cur = rlim.rlim_max = nfiles;
-	setrlimit(RLIMIT_NOFILE, &rlim);
-
-	install_segv_handler();
-	main_init();
-	reply_handshake();
-
-	for (;;) {
-		receive_execute();
-		char cwdbuf[128] = "/syz-tmpXXXXXX";
-		if (!mkdtemp(cwdbuf))
-			fail("mkdtemp failed");
-		int pid = fork();
-		if (pid < 0)
-			fail("fork failed");
-		if (pid == 0) {
-			close(kInPipeFd);
-			close(kOutPipeFd);
-			if (chdir(cwdbuf))
-				fail("chdir failed");
-			output_pos = output_data;
-			execute_one();
-			doexit(0);
-		}
-		int status = 0;
-		uint64 start = current_time_ms();
-		uint64 last_executed = start;
-		uint32 executed_calls = __atomic_load_n(output_data, __ATOMIC_RELAXED);
-		for (;;) {
-			int res = waitpid(pid, &status, WNOHANG);
-			if (res == pid)
-				break;
-			sleep_ms(1);
-			uint64 now = current_time_ms();
-			uint32 now_executed = __atomic_load_n(output_data, __ATOMIC_RELAXED);
-			if (executed_calls != now_executed) {
-				executed_calls = now_executed;
-				last_executed = now;
-			}
-			if ((now - start < 3 * 1000) && (now - last_executed < 500))
-				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(const call_t* c, long a0, long a1, long a2, long a3, long a4, long a5, long a6, long a7, long a8)
-{
-	if (c->call)
-		return c->call(a0, a1, a2, a3, a4, a5, a6, a7, a8);
-	return __syscall(c->sys_nr, a0, a1, a2, a3, a4, a5, a6, a7, a8);
-}
-
-void cover_open()
-{
-#if defined(__FreeBSD__)
-	for (int i = 0; i < kMaxThreads; i++) {
-		thread_t* th = &threads[i];
-		th->cover_fd = open("/dev/kcov", O_RDWR);
-		if (th->cover_fd == -1)
-			fail("open of /dev/kcov failed");
-		if (ioctl(th->cover_fd, KIOSETBUFSIZE, &kCoverSize))
-			fail("ioctl init trace write failed");
-		size_t mmap_alloc_size = kCoverSize * (is_kernel_64_bit ? 8 : 4);
-		char* mmap_ptr = (char*)mmap(NULL, mmap_alloc_size,
-					     PROT_READ | PROT_WRITE,
-					     MAP_SHARED, th->cover_fd, 0);
-		if (mmap_ptr == NULL)
-			fail("cover mmap failed");
-		th->cover_data = mmap_ptr;
-		th->cover_end = mmap_ptr + mmap_alloc_size;
-		th->cover_size_ptr = (uint64*)mmap_ptr;
-	}
-#endif
-}
-
-void cover_enable(thread_t* th)
-{
-#if defined(__FreeBSD__)
-	debug("#%d: enabling /dev/kcov\n", th->id);
-	int kcov_mode = flag_collect_comps ? KCOV_MODE_TRACE_CMP : KCOV_MODE_TRACE_PC;
-	if (ioctl(th->cover_fd, KIOENABLE, &kcov_mode))
-		exitf("cover enable write trace failed, mode=%d", kcov_mode);
-	debug("#%d: enabled /dev/kcov\n", th->id);
-#endif
-}
-
-void cover_reset(thread_t* th)
-{
-#if defined(__FreeBSD__)
-	*th->cover_size_ptr = 0;
-#endif
-}
-
-uint32 cover_read_size(thread_t* th)
-{
-#if defined(__FreeBSD__)
-	uint64 size = *th->cover_size_ptr;
-	debug("#%d: read cover size = %llu\n", th->id, size);
-	if (size > kCoverSize)
-		fail("#%d: too much cover %llu", th->id, size);
-	return size;
-#else
-	return 0;
-#endif
-}
-
-bool cover_check(uint32 pc)
-{
-	return true;
-}
-
-bool cover_check(uint64 pc)
-{
-	return true;
-}
-
-uint32* write_output(uint32 v)
-{
-	if (collide)
-		return 0;
-	if (output_pos < output_data || (char*)output_pos >= (char*)output_data + kMaxOutput)
-		fail("output overflow");
-	*output_pos = v;
-	return output_pos++;
-}
-
-void write_completed(uint32 completed)
-{
-	__atomic_store_n(output_data, completed, __ATOMIC_RELEASE);
-}
-
-bool kcov_comparison_t::ignore() const
-{
-	return false;
-}