l4/pkg/l4re-core/uclibc/lib/contrib/uclibc/libc/sysdeps/linux/common/ulimit.c

   1 /* vi: set sw=4 ts=4: */
   2 /*
   3  * Copyright (C) 2000-2006 Erik Andersen <andersen@uclibc.org>
   4  *
   5  * Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
   6  */
   7
   8 #include <sys/syscall.h>
   9
  10 #include <stdarg.h>
  11 #include <unistd.h>
  12 #include <ulimit.h>
  13 #include <sys/resource.h>
  14
  15
  16 long int ulimit(int cmd, ...)
  17 {
  18         va_list va;
  19         struct rlimit limit;
  20         long int result = -1;
  21         va_start (va, cmd);
  22         switch (cmd) {
  23                 /* Get limit on file size.  */
  24                 case UL_GETFSIZE:
  25                         if (getrlimit(RLIMIT_FSIZE, &limit) == 0)
  26                                 result =  limit.rlim_cur / 512; /* bytes to 512 byte blocksize */
  27                         break;
  28                 /* Set limit on file size.  */
  29                 case UL_SETFSIZE:
  30                         result = va_arg (va, long int);
  31                         if ((rlim_t) result > RLIM_INFINITY / 512) {
  32                                 limit.rlim_cur = RLIM_INFINITY;
  33                                 limit.rlim_max = RLIM_INFINITY;
  34                         } else {
  35                                 limit.rlim_cur = result * 512;
  36                                 limit.rlim_max = result * 512;
  37                         }
  38                         result = setrlimit(RLIMIT_FSIZE, &limit);
  39                         break;
  40                 case __UL_GETOPENMAX:
  41                         result = sysconf(_SC_OPEN_MAX);
  42                         break;
  43                 default:
  44                         __set_errno(EINVAL);
  45         }
  46         va_end (va);
  47         return result;
  48 }