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7.11.c
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#include <sys/resource.h>
#include "apue.h"
#define doit(name) pr_limits(#name, name)
static void pr_limits(char *, int);
int main() {
#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
#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("%-20s ", 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');
}