#include <stdio.h>  
#include <string.h>
#include <errno.h>
#include <sys/resource.h>  
  
void print_limits(char* name, int resource)
{ 
       	struct rlimit limit;  
	if(getrlimit(resource, &limit) <0)
	{  
		printf("getrlimit for %s failure: %s\n", strerror(errno));  
		return ;
	}  
	
	printf("%-15s ",name);  
	if(limit.rlim_cur == RLIM_INFINITY)
	{  
		printf("(infinite)     ");  
	}
	else
	{  
		printf("%-15ld",limit.rlim_cur);  
	} 

	if(limit.rlim_max == RLIM_INFINITY)
	{  
		printf("(infinite)     ");  
	}else
	{  
		printf("%-15ld",limit.rlim_max);  
	}  
	printf("\n");  
}  

int main(void)
{  
	struct rlimit limit = {0};

	print_limits("RLIMIT_NPROC", RLIMIT_NPROC);
	print_limits("RLIMIT_DATA", RLIMIT_DATA);
	print_limits("RLIMIT_STACK", RLIMIT_STACK);
	print_limits("RLIMIT_NOFILE", RLIMIT_NOFILE);

	printf("\nAfter set RLIMIT_NOFILE:\n");
	getrlimit(RLIMIT_NOFILE, &limit );
	limit.rlim_cur  = limit.rlim_max;
	setrlimit(RLIMIT_NOFILE, &limit );

	print_limits("RLIMIT_NOFILE", RLIMIT_NOFILE);

	return 0;
}