prlimit.c raw

   1  #define _GNU_SOURCE
   2  #include <sys/resource.h>
   3  #include "syscall.h"
   4  
   5  #define FIX(x) do{ if ((x)>=SYSCALL_RLIM_INFINITY) (x)=RLIM_INFINITY; }while(0)
   6  
   7  int prlimit(pid_t pid, int resource, const struct rlimit *new_limit, struct rlimit *old_limit)
   8  {
   9  	struct rlimit tmp;
  10  	int r;
  11  	if (new_limit && SYSCALL_RLIM_INFINITY != RLIM_INFINITY) {
  12  		tmp = *new_limit;
  13  		FIX(tmp.rlim_cur);
  14  		FIX(tmp.rlim_max);
  15  		new_limit = &tmp;
  16  	}
  17  	r = syscall(SYS_prlimit64, pid, resource, new_limit, old_limit);
  18  	if (!r && old_limit && SYSCALL_RLIM_INFINITY != RLIM_INFINITY) {
  19  		FIX(old_limit->rlim_cur);
  20  		FIX(old_limit->rlim_max);
  21  	}
  22  	return r;
  23  }
  24  
  25  #undef prlimit64
  26  weak_alias(prlimit, prlimit64);
  27