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7-16.c
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#include "apue.h"
#include <sys/resource.h>
#define doit(name) pr_limits(#name,name)
static void pr_limits(char *, int);
int main(void)
{
#ifdef RLIMIT_AS
doit(RLIMIT_AS);
#endif
doit(RLIMIT_CORE);
doit(RLIMIT_CPU);
doit(RLIMIT_DATA);
doit(RLIMIT_FSIZE);
#ifdef RLIMIT_MEMLOCK
doit(RLIMIT_MEMLOCK);
#endif
#ifdef RLIMIT_MSGQUEUE
doit(RLIMIT_MSGQUEUE);
#endif
#ifdef RLIMIT_NICE
doit(RLIMIT_NICE);
#endif
doit(RLIMIT_NOFILE);
#ifdef RLIMIT_NPROC
doit(RLIMIT_NPROC);
#endif
#ifdef RLIMIT_NPTS
doit(RLIMIT_NPTS);
#endif
#ifdef RLIMIT_RSS
doit(RLIMIT_RSS);
#endif
#ifdef RLIMIT_SBSIZE
doit(RLIMIT_SBSIZE);
#endif
#ifdef RLIMIT_SIGPENDING
doit(RLIMIT_SIGPENDING);
#endif
doit(RLIMIT_STACK);
#ifdef RLIMIT_SWAP
doit(RLIMIT_SWAP);
#endif
#ifdef RLIMIT_VMEM
doit(RLIMIT_VMEM);
#endif
exit(0);
}
static void pr_limits(char *name, int resource)
{
struct rlimit limit;
unsigned long long lim;
if(getrlimit(resource,&limit) < 0)
err_sys("getrlimit error for %s",name);
printf("%-14s ",name);
if(limit.rlim_cur == RLIM_INFINITY)
{
printf("(infinite) ");
}
else{
lim = limit.rlim_cur;
printf("%10lld ",lim);
}
if(limit.rlim_max == RLIM_INFINITY)
{
printf("(infinite)");
}
else{
lim = limit.rlim_max;
printf("%10lld",lim);
}
putchar((int)'\n');
}