79 lines
2.2 KiB
C
79 lines
2.2 KiB
C
/* Copyright (C) 1991,92,94,95,96,97,98,2000 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 Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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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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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If not,
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#include <errno.h>
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#include <stdarg.h>
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#include <sysdep.h>
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#include <ulimit.h>
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#include <unistd.h>
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#include <sys/resource.h>
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/* Function depends on CMD:
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1 = Return the limit on the size of a file, in units of 512 bytes.
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2 = Set the limit on the size of a file to NEWLIMIT. Only the
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super-user can increase the limit.
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3 = illegal due to shared libraries; normally is
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(Return the maximum possible address of the data segment.)
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4 = Return the maximum number of files that the calling process
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can open.
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Returns -1 on errors. */
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long int
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__ulimit (int cmd, ...)
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{
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struct rlimit limit;
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va_list va;
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long int result = -1;
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va_start (va, cmd);
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switch (cmd)
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{
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case UL_GETFSIZE:
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/* Get limit on file size. */
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if (__getrlimit (RLIMIT_FSIZE, &limit) == 0)
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/* Convert from bytes to 512 byte units. */
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result = limit.rlim_cur / 512;
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break;
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case UL_SETFSIZE:
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/* Set limit on file size. */
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{
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long int newlimit = va_arg (va, long int);
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limit.rlim_cur = newlimit * 512;
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limit.rlim_max = newlimit * 512;
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result = __setrlimit (RLIMIT_FSIZE, &limit);
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}
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break;
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case __UL_GETOPENMAX:
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result = __sysconf (_SC_OPEN_MAX);
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break;
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default:
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__set_errno (EINVAL);
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}
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va_end (va);
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return result;
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}
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weak_alias (__ulimit, ulimit);
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