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https://github.com/jart/cosmopolitan.git
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7166679620
- Fix a regression with the previous change that broke redbean - Add chroot(), resource limit, seccomp, and other stuff to redbean - Write lots and lots of documentation - Iron out more system call issues
42 lines
2.4 KiB
C
42 lines
2.4 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/calls/internal.h"
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#include "libc/calls/strace.internal.h"
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#include "libc/runtime/directmap.internal.h"
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/**
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* Unmaps memory directly with system.
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*
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* This function bypasses memtrack. Therefore it won't work on Windows,
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* but it works on everything else including bare metal.
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*
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* @asyncsignalsafe
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* @threadsafe
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*/
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int sys_munmap(void *p, size_t n) {
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int rc;
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if (!IsMetal()) {
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rc = __sys_munmap(p, n);
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} else {
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rc = sys_munmap_metal(p, n);
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}
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KERNTRACE("sys_munmap(%p%s, %'zu) → %d", p, DescribeFrame((intptr_t)p >> 16),
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n, rc);
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return rc;
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}
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