Simple tool to dump values of RLIMIT_* resources using getrlimit(2)

getrlimit_all.c

/* Simple tool to dump values of RLIMIT_* resources using getrlimit(2)
 *
 * Copyright (C) Sebastian Pipping <[email protected]>
 * Licensed under GPL v2 or later
 *
 * 2013-11-13
 *
 * Example output:
 * RLIMIT_AS         :         -1 soft         -1 hard
 * RLIMIT_CORE       :          0 soft         -1 hard
 * RLIMIT_CPU        :         -1 soft         -1 hard
 * RLIMIT_DATA       :         -1 soft         -1 hard
 * RLIMIT_FSIZE      :         -1 soft         -1 hard
 * RLIMIT_LOCKS      :         -1 soft         -1 hard
 * RLIMIT_MEMLOCK    :      65536 soft      65536 hard
 * RLIMIT_MSGQUEUE   :     819200 soft     819200 hard
 * RLIMIT_NICE       :          0 soft          0 hard
 * RLIMIT_NOFILE     :       1024 soft       4096 hard
 * RLIMIT_NPROC      :      63003 soft      63003 hard
 * RLIMIT_RSS        :         -1 soft         -1 hard
 * RLIMIT_RTPRIO     :          0 soft          0 hard
 * RLIMIT_RTTIME     :         -1 soft         -1 hard
 * RLIMIT_SIGPENDING :      63003 soft      63003 hard
 * RLIMIT_STACK      :    8388608 soft         -1 hard
 */

#include <sys/time.h>
#include <sys/resource.h>
#include <stdio.h>


#define SHOW(NAME)  \
	do { \
		struct rlimit limit; \
		getrlimit(NAME, &limit); \
		printf("%-18s: %10ld soft %10ld hard\n", #NAME, limit.rlim_cur, limit.rlim_max); \
	} while(0)


int main() {
	SHOW(RLIMIT_AS);
	SHOW(RLIMIT_CORE);
	SHOW(RLIMIT_CPU);
	SHOW(RLIMIT_DATA);
	SHOW(RLIMIT_FSIZE);
	SHOW(RLIMIT_LOCKS);
	SHOW(RLIMIT_MEMLOCK);
	SHOW(RLIMIT_MSGQUEUE);
	SHOW(RLIMIT_NICE);
	SHOW(RLIMIT_NOFILE);
	SHOW(RLIMIT_NPROC);
	SHOW(RLIMIT_RSS);
	SHOW(RLIMIT_RTPRIO);
	SHOW(RLIMIT_RTTIME);
	SHOW(RLIMIT_SIGPENDING);
	SHOW(RLIMIT_STACK);
	return 0;
}