getrlimit.c raw

   1  #include <sys/resource.h>
   2  #include <errno.h>
   3  #include "syscall.h"
   4  
   5  #define FIX(x) do{ if ((x)>=SYSCALL_RLIM_INFINITY) (x)=RLIM_INFINITY; }while(0)
   6  
   7  int getrlimit(int resource, struct rlimit *rlim)
   8  {
   9  	unsigned long k_rlim[2];
  10  	int ret = syscall(SYS_prlimit64, 0, resource, 0, rlim);
  11  	if (!ret) {
  12  		FIX(rlim->rlim_cur);
  13  		FIX(rlim->rlim_max);
  14  	}
  15  	if (!ret || errno != ENOSYS)
  16  		return ret;
  17  	if (syscall(SYS_getrlimit, resource, k_rlim) < 0)
  18  		return -1;
  19  	rlim->rlim_cur = k_rlim[0] == -1UL ? RLIM_INFINITY : k_rlim[0];
  20  	rlim->rlim_max = k_rlim[1] == -1UL ? RLIM_INFINITY : k_rlim[1];
  21  	FIX(rlim->rlim_cur);
  22  	FIX(rlim->rlim_max);
  23  	return 0;
  24  }
  25  
  26  weak_alias(getrlimit, getrlimit64);
  27