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695d7d138e
This patch makes sysdeps/unix/sysv/linux code assume the prlimit64 syscall is always available, given the minimum of a 3.2 kernel. __ASSUME_PRLIMIT64, which in fact was no longer used, is removed. Code conditional on __NR_prlimit64 being defined is made unconditional. Fallback code for the case where prlimit64 produces an ENOSYS error is removed, substantially simplifying some functions. Tested for x86_64 and x86. * sysdeps/unix/sysv/linux/kernel-features.h (__ASSUME_PRLIMIT64): Remove macro. * sysdeps/unix/sysv/linux/getrlimit64.c (__getrlimit64): Assume prlimit64 is always available and does not give an ENOSYS error. * sysdeps/unix/sysv/linux/prlimit.c [__NR_prlimit64]: Make code unconditional. [!__NR_prlimit64]: Remove conditional code. * sysdeps/unix/sysv/linux/setrlimit.c (__setrlimit): Assume prlimit64 is always available and does not give an ENOSYS error. * sysdeps/unix/sysv/linux/setrlimit64.c (__setrlimit64): Likewise.
60 lines
1.9 KiB
C
60 lines
1.9 KiB
C
/* Linux setrlimit implementation (32 bits off_t).
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Copyright (C) 2016-2017 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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<http://www.gnu.org/licenses/>. */
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#include <errno.h>
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#include <sys/resource.h>
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#include <sys/types.h>
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#include <shlib-compat.h>
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#if !__RLIM_T_MATCHES_RLIM64_T
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/* The compatibility symbol is meant to match the old __NR_getrlimit syscall
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(with broken RLIM_INFINITY definition). It should be provided iff
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__NR_getrlimit and __NR_ugetrlimit are both defined. */
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# ifndef __NR_ugetrlimit
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# undef SHLIB_COMPAT
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# define SHLIB_COMPAT(a, b, c) 0
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# endif
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int
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__setrlimit (enum __rlimit_resource resource, const struct rlimit *rlim)
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{
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struct rlimit64 rlim64;
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if (rlim->rlim_cur == RLIM_INFINITY)
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rlim64.rlim_cur = RLIM64_INFINITY;
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else
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rlim64.rlim_cur = rlim->rlim_cur;
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if (rlim->rlim_max == RLIM_INFINITY)
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rlim64.rlim_max = RLIM64_INFINITY;
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else
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rlim64.rlim_max = rlim->rlim_max;
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return INLINE_SYSCALL_CALL (prlimit64, 0, resource, &rlim64, NULL);
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}
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# if SHLIB_COMPAT (libc, GLIBC_2_0, GLIBC_2_2)
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strong_alias (__setrlimit, __setrlimit_1)
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compat_symbol (libc, __setrlimit, setrlimit, GLIBC_2_0);
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versioned_symbol (libc, __setrlimit_1, setrlimit, GLIBC_2_2);
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# else
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weak_alias (__setrlimit, setrlimit)
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# endif
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#endif /* __RLIM_T_MATCHES_RLIM64_T */
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