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9ec31e5727
The __hurd_fail () inline function is the dedicated, idiomatic way of
reporting errors in the Hurd part of glibc. Not only is it more concise
than '{ errno = err; return -1; }', it is since commit
6639cc1002
"hurd: Mark error functions as __COLD" marked with the cold attribute,
telling the compiler that this codepath is unlikely to be executed.
In one case, use __hurd_dfail () over the plain __hurd_fail ().
Signed-off-by: Sergey Bugaev <bugaevc@gmail.com>
Message-Id: <20230520115531.3911877-1-bugaevc@gmail.com>
55 lines
1.7 KiB
C
55 lines
1.7 KiB
C
/* Copyright (C) 1991-2023 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <hurd.h>
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#include <hurd/fd.h>
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#include <hurd/resource.h>
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/* Set the soft and hard limits for RESOURCE to *RLIMITS.
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Only the super-user can increase hard limits.
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Return 0 if successful, -1 if not (and sets errno). */
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int
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__setrlimit (enum __rlimit_resource resource, const struct rlimit *rlimits)
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{
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struct rlimit lim;
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if (rlimits == NULL || (unsigned int) resource >= RLIMIT_NLIMITS)
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return __hurd_fail (EINVAL);
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lim = *rlimits;
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/* Even though most limits do nothing, there is no inheritance, and hard
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limits are not really hard, we just let any old call succeed to make
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life easier for programs that expect normal behavior. */
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if (lim.rlim_cur > lim.rlim_max)
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lim.rlim_cur = lim.rlim_max;
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HURD_CRITICAL_BEGIN;
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__mutex_lock (&_hurd_rlimit_lock);
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_hurd_rlimits[resource] = lim;
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__mutex_unlock (&_hurd_rlimit_lock);
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HURD_CRITICAL_END;
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return 0;
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}
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libc_hidden_def (__setrlimit)
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weak_alias (__setrlimit, setrlimit)
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