minix/lib/libc/sys/getrlimit.c

   1 /*      getrlimit                             Author: Erik van der Kouwe
   2  *      query resource consumtion limits      4 December 2009
   3  *
   4  * Based on these specifications:
   5  * http://www.opengroup.org/onlinepubs/007908775/xsh/getdtablesize.html
   6  * http://www.opengroup.org/onlinepubs/007908775/xsh/getrlimit.html
   7  */
   8
   9 #include <sys/cdefs.h>
  10 #include "namespace.h"
  11
  12 #include <errno.h>
  13 #include <limits.h>
  14 #include <sys/resource.h>
  15 #include <unistd.h>
  16
  17 int getrlimit(int resource, struct rlimit *rlp)
  18 {
  19         rlim_t limit;
  20
  21         switch (resource)
  22         {
  23                 case RLIMIT_CPU:
  24                 case RLIMIT_FSIZE:
  25                 case RLIMIT_DATA:
  26                 case RLIMIT_STACK:
  27                 case RLIMIT_CORE:
  28                 case RLIMIT_RSS:
  29                 case RLIMIT_MEMLOCK:
  30                 case RLIMIT_SBSIZE:
  31                 case RLIMIT_AS:
  32                 /* case RLIMIT_VMEM: Same as RLIMIT_AS */
  33                 case RLIMIT_NTHR:
  34                         /* no limit enforced (however architectural limits
  35                          * may apply)
  36                          */
  37                         limit = RLIM_INFINITY;
  38                         break;
  39
  40                 case RLIMIT_NPROC:
  41                         limit = CHILD_MAX;
  42                         break;
  43
  44                 case RLIMIT_NOFILE:
  45                         limit = OPEN_MAX;
  46                         break;
  47
  48                 default:
  49                         errno = EINVAL;
  50                         return -1;
  51         }
  52
  53         /* return limit */
  54         rlp->rlim_cur = limit;
  55         rlp->rlim_max = limit;
  56         return 0;
  57 }
  58