mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-02-07 23:13:34 +00:00
7d25fb0090
I personally find it easier to read the documentation in Emacs using JavaDoc style comments.
57 lines
2.9 KiB
C
57 lines
2.9 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
|
|
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
|
|
╞══════════════════════════════════════════════════════════════════════════════╡
|
|
│ Copyright 2020 Justine Alexandra Roberts Tunney │
|
|
│ │
|
|
│ Permission to use, copy, modify, and/or distribute this software for │
|
|
│ any purpose with or without fee is hereby granted, provided that the │
|
|
│ above copyright notice and this permission notice appear in all copies. │
|
|
│ │
|
|
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
|
|
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
|
|
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
|
|
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
|
|
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
|
|
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
|
|
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
|
|
│ PERFORMANCE OF THIS SOFTWARE. │
|
|
╚─────────────────────────────────────────────────────────────────────────────*/
|
|
#include "libc/calls/calls.h"
|
|
#include "libc/calls/internal.h"
|
|
#include "libc/dce.h"
|
|
#include "libc/intrin/asan.internal.h"
|
|
#include "libc/sysv/consts/o.h"
|
|
#include "libc/sysv/errfuns.h"
|
|
|
|
/**
|
|
* Replaces current process with program.
|
|
*
|
|
* @param program will not be PATH searched, see commandv()
|
|
* @param argv[0] is the name of the program to run
|
|
* @param argv[1,n-2] optionally specify program arguments
|
|
* @param argv[n-1] is NULL
|
|
* @param envp[0,n-2] specifies "foo=bar" environment variables
|
|
* @param envp[n-1] is NULL
|
|
* @return doesn't return, or -1 w/ errno
|
|
* @asyncsignalsafe
|
|
* @vforksafe
|
|
*/
|
|
int execve(const char *program, char *const argv[], char *const envp[]) {
|
|
size_t i;
|
|
if (!program || !argv || !envp) return efault();
|
|
if (IsAsan() &&
|
|
(!__asan_is_valid(program, 1) || !__asan_is_valid_strlist(argv) ||
|
|
!__asan_is_valid_strlist(envp))) {
|
|
return efault();
|
|
}
|
|
for (i = 3; i < g_fds.n; ++i) {
|
|
if (g_fds.p[i].kind != kFdEmpty && (g_fds.p[i].flags & O_CLOEXEC)) {
|
|
close(i);
|
|
}
|
|
}
|
|
if (!IsWindows()) {
|
|
return sys_execve(program, argv, envp);
|
|
} else {
|
|
return sys_execve_nt(program, argv, envp);
|
|
}
|
|
}
|