lib/other/rlimit.c

   1 /*      getdtablesize, 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 <errno.h>
  10 #include <limits.h>
  11 #include <sys/resource.h>
  12 #include <unistd.h>
  13
  14 int getdtablesize(void)
  15 {
  16         return OPEN_MAX;
  17 }
  18
  19 int getrlimit(int resource, struct rlimit *rlp)
  20 {
  21         rlim_t limit;
  22
  23         switch (resource)
  24         {
  25                 case RLIMIT_CORE:
  26                         /* no core currently produced */
  27                         limit = 0;
  28                         break;
  29
  30                 case RLIMIT_CPU:
  31                 case RLIMIT_DATA:
  32                 case RLIMIT_FSIZE:
  33                 case RLIMIT_STACK:
  34                 case RLIMIT_AS:
  35                         /* no limit enforced (however architectural limits
  36                          * may apply)
  37                          */
  38                         limit = RLIM_INFINITY;
  39                         break;
  40
  41                 case RLIMIT_NOFILE:
  42                         limit = OPEN_MAX;
  43                         break;
  44
  45                 default:
  46                         errno = EINVAL;
  47                         return -1;
  48         }
  49
  50         /* return limit */
  51         rlp->rlim_cur = limit;
  52         rlp->rlim_max = limit;
  53         return 0;
  54 }
  55