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/* -*- coding: utf-8 -*-
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
*/
#include "config.h"
#include <sys/wait.h>
#include <unistd.h>
#include <stdio.h>
#include <stdlib.h>
#include <paths.h>
#if defined HAVE_POSIX_SPAWN || defined HAVE_POSIX_SPAWNP
#include <spawn.h>
#endif
// ..:: environment access fixer - begin ::..
#ifdef HAVE_NSGETENVIRON
#include <crt_externs.h>
#else
extern char **environ;
#endif
char **get_environ() {
#ifdef HAVE_NSGETENVIRON
return *_NSGetEnviron();
#else
return environ;
#endif
}
// ..:: environment access fixer - end ::..
// ..:: test fixtures - begin ::..
static char const *cwd = NULL;
static FILE *fd = NULL;
static int need_comma = 0;
void expected_out_open(const char *expected) {
cwd = getcwd(NULL, 0);
fd = fopen(expected, "w");
if (!fd) {
perror("fopen");
exit(EXIT_FAILURE);
}
fprintf(fd, "[\n");
need_comma = 0;
}
void expected_out_close() {
fprintf(fd, "]\n");
fclose(fd);
fd = NULL;
free((void *)cwd);
cwd = NULL;
}
void expected_out(const char *file) {
if (need_comma)
fprintf(fd, ",\n");
else
need_comma = 1;
fprintf(fd, "{\n");
fprintf(fd, " \"directory\": \"%s\",\n", cwd);
fprintf(fd, " \"command\": \"cc -c %s\",\n", file);
fprintf(fd, " \"file\": \"%s/%s\"\n", cwd, file);
fprintf(fd, "}\n");
}
void create_source(char *file) {
FILE *fd = fopen(file, "w");
if (!fd) {
perror("fopen");
exit(EXIT_FAILURE);
}
fprintf(fd, "typedef int score;\n");
fclose(fd);
}
typedef void (*exec_fun)();
void wait_for(pid_t child) {
int status;
if (-1 == waitpid(child, &status, 0)) {
perror("wait");
exit(EXIT_FAILURE);
}
if (WIFEXITED(status) ? WEXITSTATUS(status) : EXIT_FAILURE) {
fprintf(stderr, "children process has non zero exit code\n");
exit(EXIT_FAILURE);
}
}
#define FORK(FUNC) \
{ \
pid_t child = fork(); \
if (-1 == child) { \
perror("fork"); \
exit(EXIT_FAILURE); \
} else if (0 == child) { \
FUNC fprintf(stderr, "children process failed to exec\n"); \
exit(EXIT_FAILURE); \
} else { \
wait_for(child); \
} \
}
// ..:: test fixtures - end ::..
#ifdef HAVE_EXECV
void call_execv() {
char *const file = "execv.c";
char *const compiler = "/usr/bin/cc";
char *const argv[] = {"cc", "-c", file, 0};
expected_out(file);
create_source(file);
FORK(execv(compiler, argv);)
}
#endif
#ifdef HAVE_EXECVE
void call_execve() {
char *const file = "execve.c";
char *const compiler = "/usr/bin/cc";
char *const argv[] = {compiler, "-c", file, 0};
char *const envp[] = {"THIS=THAT", 0};
expected_out(file);
create_source(file);
FORK(execve(compiler, argv, envp);)
}
#endif
#ifdef HAVE_EXECVP
void call_execvp() {
char *const file = "execvp.c";
char *const compiler = "cc";
char *const argv[] = {compiler, "-c", file, 0};
expected_out(file);
create_source(file);
FORK(execvp(compiler, argv);)
}
#endif
#ifdef HAVE_EXECVP2
void call_execvP() {
char *const file = "execv_p.c";
char *const compiler = "cc";
char *const argv[] = {compiler, "-c", file, 0};
expected_out(file);
create_source(file);
FORK(execvP(compiler, _PATH_DEFPATH, argv);)
}
#endif
#ifdef HAVE_EXECVPE
void call_execvpe() {
char *const file = "execvpe.c";
char *const compiler = "cc";
char *const argv[] = {"/usr/bin/cc", "-c", file, 0};
char *const envp[] = {"THIS=THAT", 0};
expected_out(file);
create_source(file);
FORK(execvpe(compiler, argv, envp);)
}
#endif
#ifdef HAVE_EXECT
void call_exect() {
char *const file = "exect.c";
char *const compiler = "/usr/bin/cc";
char *const argv[] = {compiler, "-c", file, 0};
char *const envp[] = {"THIS=THAT", 0};
expected_out(file);
create_source(file);
FORK(exect(compiler, argv, envp);)
}
#endif
#ifdef HAVE_EXECL
void call_execl() {
char *const file = "execl.c";
char *const compiler = "/usr/bin/cc";
expected_out(file);
create_source(file);
FORK(execl(compiler, "cc", "-c", file, (char *)0);)
}
#endif
#ifdef HAVE_EXECLP
void call_execlp() {
char *const file = "execlp.c";
char *const compiler = "cc";
expected_out(file);
create_source(file);
FORK(execlp(compiler, compiler, "-c", file, (char *)0);)
}
#endif
#ifdef HAVE_EXECLE
void call_execle() {
char *const file = "execle.c";
char *const compiler = "/usr/bin/cc";
char *const envp[] = {"THIS=THAT", 0};
expected_out(file);
create_source(file);
FORK(execle(compiler, compiler, "-c", file, (char *)0, envp);)
}
#endif
#ifdef HAVE_POSIX_SPAWN
void call_posix_spawn() {
char *const file = "posix_spawn.c";
char *const compiler = "cc";
char *const argv[] = {compiler, "-c", file, 0};
expected_out(file);
create_source(file);
pid_t child;
if (0 != posix_spawn(&child, "/usr/bin/cc", 0, 0, argv, get_environ())) {
perror("posix_spawn");
exit(EXIT_FAILURE);
}
wait_for(child);
}
#endif
#ifdef HAVE_POSIX_SPAWNP
void call_posix_spawnp() {
char *const file = "posix_spawnp.c";
char *const compiler = "cc";
char *const argv[] = {compiler, "-c", file, 0};
expected_out(file);
create_source(file);
pid_t child;
if (0 != posix_spawnp(&child, "cc", 0, 0, argv, get_environ())) {
perror("posix_spawnp");
exit(EXIT_FAILURE);
}
wait_for(child);
}
#endif
int main(int argc, char *const argv[]) {
if (argc != 2)
exit(EXIT_FAILURE);
expected_out_open(argv[1]);
#ifdef HAVE_EXECV
call_execv();
#endif
#ifdef HAVE_EXECVE
call_execve();
#endif
#ifdef HAVE_EXECVP
call_execvp();
#endif
#ifdef HAVE_EXECVP2
call_execvP();
#endif
#ifdef HAVE_EXECVPE
call_execvpe();
#endif
#ifdef HAVE_EXECT
call_exect();
#endif
#ifdef HAVE_EXECL
call_execl();
#endif
#ifdef HAVE_EXECLP
call_execlp();
#endif
#ifdef HAVE_EXECLE
call_execle();
#endif
#ifdef HAVE_POSIX_SPAWN
call_posix_spawn();
#endif
#ifdef HAVE_POSIX_SPAWNP
call_posix_spawnp();
#endif
expected_out_close();
return 0;
}
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