mirror of
https://github.com/jart/cosmopolitan.git
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65 lines
3.2 KiB
C
65 lines
3.2 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│ vi: set et 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/struct/rlimit.internal.h"
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#include "libc/calls/syscall-sysv.internal.h"
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#include "libc/dce.h"
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#include "libc/intrin/describeflags.h"
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#include "libc/intrin/strace.h"
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#include "libc/runtime/runtime.h"
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#include "libc/runtime/stack.h"
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#include "libc/runtime/syslib.internal.h"
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#include "libc/sysv/consts/rlimit.h"
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#include "libc/sysv/errfuns.h"
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/**
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* Gets resource limit for current process.
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*
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* @param resource can be RLIMIT_{CPU,FSIZE,DATA,STACK,CORE,RSS,etc.}
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* @param rlim receives result, modified only on success
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* @return 0 on success or -1 w/ errno
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* @see libc/sysv/consts.sh
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*/
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int getrlimit(int resource, struct rlimit *rlim) {
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int rc;
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if (resource == 127) {
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rc = einval();
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} else if (!rlim) {
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rc = efault();
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} else if (IsXnuSilicon()) {
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rc = _sysret(__syslib->__getrlimit(resource, rlim));
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} else if (!IsWindows()) {
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rc = sys_getrlimit(resource, rlim);
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} else if (resource == RLIMIT_STACK) {
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rlim->rlim_cur = GetStaticStackSize();
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rlim->rlim_max = GetStaticStackSize();
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rc = 0;
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} else if (resource == RLIMIT_AS) {
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rlim->rlim_cur = __virtualmax;
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rlim->rlim_max = __virtualmax;
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rc = 0;
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} else {
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rc = einval();
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}
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STRACE("getrlimit(%s, [%s]) → %d% m", DescribeRlimitName(resource),
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DescribeRlimit(rc, rlim), rc);
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return rc;
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}
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__weak_reference(getrlimit, getrlimit64);
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