mirror of
https://github.com/jart/cosmopolitan.git
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2046c0d2ae
- Expand redbean UNIX module - Expand redbean documentation - Ensure Lua copyright is embedded in binary - Increase the PATH_MAX limit especially on NT - Use column major sorting for linenoise completions - Fix some suboptimalities in redbean's new UNIX API - Figured out right flags for Multics newline in raw mode
44 lines
2.5 KiB
C
44 lines
2.5 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 2021 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/bits/safemacros.internal.h"
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#include "libc/calls/calls.h"
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#include "libc/calls/internal.h"
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#include "libc/errno.h"
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#include "libc/mem/alloca.h"
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#include "libc/paths.h"
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#include "libc/str/str.h"
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int sys_execve(const char *prog, char *const argv[], char *const envp[]) {
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size_t i;
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char **shargs;
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__sys_execve(prog, argv, envp);
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if (errno != ENOEXEC) return -1;
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for (i = 0; argv[i];) ++i;
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shargs = alloca((i + 2) * sizeof(char *));
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memcpy(shargs + 2, argv + 1, i * sizeof(char *));
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if (IsFreebsd() || IsNetbsd()) {
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shargs[0] = firstnonnull(
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commandv("bash", alloca(PATH_MAX + 1), PATH_MAX + 1), _PATH_BSHELL);
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} else {
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shargs[0] = _PATH_BSHELL;
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}
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shargs[1] = prog;
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return __sys_execve(shargs[0], shargs, envp);
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}
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