mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-02-01 03:53:33 +00:00
b45d50b690
- Fix build flakes - Polyfill SIGWINCH on Windows - Fix an execve issue on Windows - Make strerror show more information - Improve cmd.exe setup/teardown on Windows - Support bracketed paste mode in Blinkenlights - Show keyboard shortcuts in Blinkenlights status bar - Fixed copy_file_range() and copyfile() w/ zip filesystem - Size optimize GetDosArgv() to keep life.com 12kb in size - Improve Blinkenlights ability to load weird ELF executables - Fix program_executable_name and add GetInterpreterExecutableName - Make Python in tiny mode fail better if docstrings are requested - Update Python test exclusions in tiny* modes such as tinylinux - Add bulletproof unbreakable kprintf() troubleshooting function - Remove "oldskool" keyword from ape.S for virus scanners - Fix issue that caused backtraces to not print sometimes - Improve Blinkenlights serial uart character i/o - Make clock_gettime() not clobber errno on xnu - Improve sha256 cpuid check for old computers - Integrate some bestline linenoise fixes - Show runit process names better in htop - Remove SIGPIPE from ShowCrashReports() - Make realpath() not clobber errno - Avoid attaching GDB on non-Linux - Improve img.com example
73 lines
3.3 KiB
C
73 lines
3.3 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2020 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/calls/calls.h"
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#include "libc/calls/internal.h"
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#include "libc/calls/sysdebug.internal.h"
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#include "libc/dce.h"
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#include "libc/intrin/asan.internal.h"
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#include "libc/intrin/kprintf.h"
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#include "libc/log/libfatal.internal.h"
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#include "libc/sysv/consts/o.h"
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#include "libc/sysv/errfuns.h"
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/**
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* Replaces current process with program.
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*
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* @param program will not be PATH searched, see commandv()
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* @param argv[0] is the name of the program to run
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* @param argv[1,n-2] optionally specify program arguments
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* @param argv[n-1] is NULL
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* @param envp[0,n-2] specifies "foo=bar" environment variables
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* @param envp[n-1] is NULL
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* @return doesn't return, or -1 w/ errno
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* @asyncsignalsafe
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* @vforksafe
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*/
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int execve(const char *program, char *const argv[], char *const envp[]) {
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size_t i;
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if (!program || !argv || !envp) return efault();
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if (IsAsan() &&
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(!__asan_is_valid(program, 1) || !__asan_is_valid_strlist(argv) ||
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!__asan_is_valid_strlist(envp))) {
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return efault();
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}
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if (DEBUGSYS) {
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kprintf("SYS: execve(%s, {", program);
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for (i = 0; argv[i]; ++i) {
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if (i) kprintf(", ");
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kprintf("%s", argv[i]);
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}
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kprintf("}, {");
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for (i = 0; envp[i]; ++i) {
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if (i) kprintf(", ");
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kprintf("%s", envp[i]);
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}
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kprintf("})\n");
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}
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for (i = 3; i < g_fds.n; ++i) {
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if (g_fds.p[i].kind != kFdEmpty && (g_fds.p[i].flags & O_CLOEXEC)) {
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close(i);
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}
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}
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if (!IsWindows()) {
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return sys_execve(program, argv, envp);
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} else {
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return sys_execve_nt(program, argv, envp);
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}
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}
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