1 // rlimit should be able to set file limits
2 #include <stdlib.h>
3 #include <string.h>
4 #include <errno.h>
5 #include <unistd.h>
6 #include <sys/resource.h>
7 #include "test.h"
8
main(void)9 int main(void)
10 {
11 static const long lim = 42;
12 static const int r = RLIMIT_NOFILE;
13 struct rlimit rl;
14 int fd, maxfd = 0;
15
16 rl.rlim_max = lim;
17 rl.rlim_cur = lim;
18 if (setrlimit(r, &rl))
19 t_error("setrlimit(%d, %ld) failed: %s\n", r, lim, strerror(errno));
20 if (getrlimit(r, &rl))
21 t_error("getrlimit(%d) failed: %s\n", r, strerror(errno));
22 if (rl.rlim_max != lim || rl.rlim_cur != lim)
23 t_error("getrlimit %d says cur=%ld,max=%ld after setting the limit to %ld\n", r, rl.rlim_cur, rl.rlim_max, lim);
24
25 while((fd=dup(1)) != -1)
26 if (fd > maxfd) maxfd = fd;
27 if (errno != EMFILE)
28 t_error("dup(1) failed with %s, wanted EMFILE\n", strerror(errno));
29 if (maxfd+1 != lim)
30 t_error("more fds are open than rlimit allows: fd=%d, limit=%d\n", maxfd, lim);
31
32 return t_status;
33 }
34