[src/trunk]: src/tests/syscall Use RLIMIT_NOFILE rather than the static _SC_O...

[jruoho <jruoho%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/f186fe526eeb
branches:  trunk
changeset: 763965:f186fe526eeb
user:      jruoho <jruoho%NetBSD.org@localhost>
date:      Fri Apr 08 15:35:49 2011 +0000

description:
Use RLIMIT_NOFILE rather than the static _SC_OPEN_MAX.

diffstat:

 tests/syscall/t_dup.c |  17 ++++++++++++-----
 1 files changed, 12 insertions(+), 5 deletions(-)

diffs (54 lines):

diff -r 4ce8437cc50f -r f186fe526eeb tests/syscall/t_dup.c
--- a/tests/syscall/t_dup.c     Fri Apr 08 15:25:00 2011 +0000
+++ b/tests/syscall/t_dup.c     Fri Apr 08 15:35:49 2011 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: t_dup.c,v 1.2 2011/04/03 16:22:15 jruoho Exp $ */
+/* $NetBSD: t_dup.c,v 1.3 2011/04/08 15:35:49 jruoho Exp $ */
 
 /*-
  * Copyright (c) 2011 The NetBSD Foundation, Inc.
@@ -29,8 +29,9 @@
  * POSSIBILITY OF SUCH DAMAGE.
  */
 #include <sys/cdefs.h>
-__RCSID("$NetBSD: t_dup.c,v 1.2 2011/04/03 16:22:15 jruoho Exp $");
+__RCSID("$NetBSD: t_dup.c,v 1.3 2011/04/08 15:35:49 jruoho Exp $");
 
+#include <sys/resource.h>
 #include <sys/stat.h>
 
 #include <errno.h>
@@ -63,6 +64,7 @@
 ATF_TC_BODY(dup_max, tc)
 {
        int current, fd, *buf, serrno;
+       struct rlimit res;
        long i, maxfd;
 
        /*
@@ -71,9 +73,14 @@
         * reached. Ater that dup(2) should
         * fail with EMFILE.
         */
-       maxfd = sysconf(_SC_OPEN_MAX);
-       ATF_REQUIRE(maxfd >= 0);
+       (void)memset(&res, 0, sizeof(struct rlimit));
+
+       ATF_REQUIRE(getrlimit(RLIMIT_NOFILE, &res) == 0);
 
+       ATF_REQUIRE(res.rlim_cur > 0);
+       ATF_REQUIRE(res.rlim_max > 0);
+
+       maxfd = res.rlim_cur;
        buf = calloc(maxfd, sizeof(int));
 
        if (buf == NULL)
@@ -107,7 +114,7 @@
        free(buf);
 
        if (fd != -1 || serrno != EMFILE)
-               atf_tc_fail("dup(2) dupped more than _SC_OPEN_MAX");
+               atf_tc_fail("dup(2) dupped more than RLIMIT_NOFILE");
 }
 
 ATF_TC_CLEANUP(dup_max, tc)