[src/trunk]: src/tests/lib/libc/sys Add the error in syscall failure.

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

details:   https://anonhg.NetBSD.org/src/rev/54298d5058bb
branches:  trunk
changeset: 824105:54298d5058bb
user:      christos <christos%NetBSD.org@localhost>
date:      Tue May 23 16:01:46 2017 +0000

description:
Add the error in syscall failure.

diffstat:

 tests/lib/libc/sys/t_mincore.c |  22 ++++++++++++----------
 1 files changed, 12 insertions(+), 10 deletions(-)

diffs (81 lines):

diff -r 6efb6b2086d7 -r 54298d5058bb tests/lib/libc/sys/t_mincore.c
--- a/tests/lib/libc/sys/t_mincore.c    Tue May 23 15:56:55 2017 +0000
+++ b/tests/lib/libc/sys/t_mincore.c    Tue May 23 16:01:46 2017 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: t_mincore.c,v 1.10 2017/01/14 20:51:13 christos Exp $ */
+/* $NetBSD: t_mincore.c,v 1.11 2017/05/23 16:01:46 christos Exp $ */
 
 /*-
  * Copyright (c) 2011 The NetBSD Foundation, Inc.
@@ -59,7 +59,7 @@
  * POSSIBILITY OF SUCH DAMAGE.
  */
 #include <sys/cdefs.h>
-__RCSID("$NetBSD: t_mincore.c,v 1.10 2017/01/14 20:51:13 christos Exp $");
+__RCSID("$NetBSD: t_mincore.c,v 1.11 2017/05/23 16:01:46 christos Exp $");
 
 #include <sys/mman.h>
 #include <sys/stat.h>
@@ -79,6 +79,8 @@
 static const char      path[] = "mincore";
 static size_t          check_residency(void *, size_t);
 
+#define ATF_REQUIRE_STRERROR(a) ATF_REQUIRE_MSG(a, " (%s)", strerror(errno))
+
 static size_t
 check_residency(void *addr, size_t npgs)
 {
@@ -238,18 +240,18 @@
 
        ATF_REQUIRE(check_residency(addr2, npgs) == npgs);
        ATF_REQUIRE(check_residency(addr3, npgs) == 0);
-       ATF_REQUIRE(mprotect(addr3, npgs * page, PROT_READ) == 0);
+       ATF_REQUIRE_STRERROR(mprotect(addr3, npgs * page, PROT_READ) == 0);
        ATF_REQUIRE(check_residency(addr, npgs) == npgs);
        ATF_REQUIRE(check_residency(addr2, npgs) == npgs);
 
        (void)munlockall();
 
-       ATF_REQUIRE(madvise(addr2, npgs * page, MADV_FREE) == 0);
+       ATF_REQUIRE_STRERROR(madvise(addr2, npgs * page, MADV_FREE) == 0);
        ATF_REQUIRE(check_residency(addr2, npgs) == 0);
 
        (void)memset(addr, 0, npgs * page);
 
-       ATF_REQUIRE(madvise(addr, npgs * page, MADV_FREE) == 0);
+       ATF_REQUIRE_STRERROR(madvise(addr, npgs * page, MADV_FREE) == 0);
        ATF_REQUIRE(check_residency(addr, npgs) == 0);
 
        (void)munmap(addr, npgs * page);
@@ -279,17 +281,17 @@
        shmid = shmget(IPC_PRIVATE, npgs * page,
            IPC_CREAT | S_IRUSR | S_IWUSR);
 
-       ATF_REQUIRE(shmid != -1);
+       ATF_REQUIRE_STRERROR(shmid != -1);
 
        addr = shmat(shmid, NULL, 0);
 
-       ATF_REQUIRE(addr != NULL);
+       ATF_REQUIRE_STRERROR(addr != NULL);
        ATF_REQUIRE(check_residency(addr, npgs) == 0);
 
        (void)memset(addr, 0xff, npgs * page);
 
        ATF_REQUIRE(check_residency(addr, npgs) == npgs);
-       ATF_REQUIRE(madvise(addr, npgs * page, MADV_FREE) == 0);
+       ATF_REQUIRE_STRERROR(madvise(addr, npgs * page, MADV_FREE) == 0);
 
        /*
         * NOTE!  Even though we have MADV_FREE'd the range,
@@ -308,8 +310,8 @@
 
        (void)fprintf(stderr, "%zu pages still resident\n", npgs);
 
-       ATF_REQUIRE(shmdt(addr) == 0);
-       ATF_REQUIRE(shmctl(shmid, IPC_RMID, NULL) == 0);
+       ATF_REQUIRE_STRERROR(shmdt(addr) == 0);
+       ATF_REQUIRE_STRERROR(shmctl(shmid, IPC_RMID, NULL) == 0);
 }
 
 ATF_TP_ADD_TCS(tp)