Module Name: src
Committed By: jruoho
Date: Thu Jul 14 08:09:48 UTC 2011
Modified Files:
src/tests/lib/libc/sys: t_mincore.c
Log Message:
Add the test cases from the old ../regress/sys/uvm/mmap/mmap.c.
To generate a diff of this commit:
cvs rdiff -u -r1.1 -r1.2 src/tests/lib/libc/sys/t_mincore.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/tests/lib/libc/sys/t_mincore.c
diff -u src/tests/lib/libc/sys/t_mincore.c:1.1 src/tests/lib/libc/sys/t_mincore.c:1.2
--- src/tests/lib/libc/sys/t_mincore.c:1.1 Thu Jul 7 06:57:53 2011
+++ src/tests/lib/libc/sys/t_mincore.c Thu Jul 14 08:09:48 2011
@@ -1,4 +1,4 @@
-/* $NetBSD: t_mincore.c,v 1.1 2011/07/07 06:57:53 jruoho Exp $ */
+/* $NetBSD: t_mincore.c,v 1.2 2011/07/14 08:09:48 jruoho Exp $ */
/*-
* Copyright (c) 2011 The NetBSD Foundation, Inc.
@@ -28,19 +28,78 @@
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*/
+
+/*-
+ * Copyright (c) 1999 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
+ * NASA Ames Research Center.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
#include <sys/cdefs.h>
-__RCSID("$NetBSD: t_mincore.c,v 1.1 2011/07/07 06:57:53 jruoho Exp $");
+__RCSID("$NetBSD: t_mincore.c,v 1.2 2011/07/14 08:09:48 jruoho Exp $");
#include <sys/mman.h>
+#include <sys/shm.h>
#include <atf-c.h>
#include <errno.h>
#include <fcntl.h>
+#include <stdio.h>
#include <stdlib.h>
+#include <string.h>
#include <unistd.h>
static long page = 0;
static const char path[] = "mincore";
+static size_t check_residency(void *, size_t);
+
+static size_t
+check_residency(void *addr, size_t npgs)
+{
+ size_t i, resident;
+ char *vec;
+
+ vec = malloc(npgs);
+
+ ATF_REQUIRE(vec != NULL);
+ ATF_REQUIRE(mincore(addr, npgs * page, vec) == 0);
+
+ for (i = resident = 0; i < npgs; i++) {
+
+ if (vec[i] != 0)
+ resident++;
+
+ (void)fprintf(stderr, "page 0x%p is %sresident\n",
+ (char *)addr + (i * page), vec[i] ? "" : "not ");
+ }
+
+ free(vec);
+
+ return resident;
+}
ATF_TC(mincore_err);
ATF_TC_HEAD(mincore_err, tc)
@@ -176,6 +235,162 @@
(void)unlink(path);
}
+ATF_TC_WITH_CLEANUP(mincore_residency);
+ATF_TC_HEAD(mincore_residency, tc)
+{
+ atf_tc_set_md_var(tc, "descr", "mmap(2) residency with mincore(2)");
+}
+
+ATF_TC_BODY(mincore_residency, tc)
+{
+ void *addr, *addr2, *addr3, *buf;
+ size_t npgs = 0;
+ struct stat st;
+ ssize_t tot;
+ int fd, rv;
+
+ (void)memset(&st, 0, sizeof(struct stat));
+
+ fd = open(path, O_RDWR | O_CREAT, 0700);
+ buf = malloc(page * 5);
+
+ ATF_REQUIRE(fd >= 0);
+ ATF_REQUIRE(buf != NULL);
+
+ tot = 0;
+
+ while (tot < page) {
+
+ rv = write(fd, buf, sizeof(buf));
+ ATF_REQUIRE(rv >= 0);
+
+ tot += rv;
+ }
+
+ ATF_REQUIRE(fd >= 0);
+ ATF_REQUIRE(fstat(fd, &st) == 0);
+
+ addr = mmap(NULL, (size_t)st.st_size, PROT_READ,
+ MAP_FILE | MAP_SHARED, fd, (off_t) 0);
+
+ ATF_REQUIRE(addr != MAP_FAILED);
+
+ (void)close(fd);
+
+ npgs = st.st_size / page;
+
+ if (st.st_size % page != 0)
+ npgs++;
+
+ (void)check_residency(addr, npgs);
+
+ ATF_REQUIRE(mlock(addr, npgs * page) == 0);
+ ATF_REQUIRE(munmap(addr, st.st_size) == 0);
+
+ npgs = 128;
+
+ addr = mmap(NULL, npgs * page, PROT_READ | PROT_WRITE,
+ MAP_ANON | MAP_PRIVATE | MAP_WIRED, -1, (off_t)0);
+
+ if (addr == MAP_FAILED)
+ return;
+
+ ATF_REQUIRE(check_residency(addr, npgs) == npgs);
+ ATF_REQUIRE(munmap(addr, npgs * page) == 0);
+
+ npgs = 128;
+
+ addr = mmap(NULL, npgs * page, PROT_READ | PROT_WRITE,
+ MAP_ANON | MAP_PRIVATE, -1, (off_t)0);
+
+ if (addr == MAP_FAILED)
+ return;
+
+ ATF_REQUIRE(check_residency(addr, npgs) == 0);
+ ATF_REQUIRE(mlockall(MCL_CURRENT|MCL_FUTURE) == 0);
+ ATF_REQUIRE(check_residency(addr, npgs) == npgs);
+
+ addr2 = mmap(NULL, npgs * page, PROT_READ, MAP_ANON, -1, (off_t)0);
+ addr3 = mmap(NULL, npgs * page, PROT_NONE, MAP_ANON, -1, (off_t)0);
+
+ if (addr2 == MAP_FAILED || addr3 == MAP_FAILED)
+ return;
+
+ 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(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(check_residency(addr2, npgs) == 0);
+
+ (void)memset(addr, 0, npgs * page);
+
+ ATF_REQUIRE(madvise(addr, npgs * page, MADV_FREE) == 0);
+ ATF_REQUIRE(check_residency(addr, npgs) == 0);
+
+ (void)munmap(addr, npgs * page);
+ (void)munmap(addr2, npgs * page);
+ (void)munmap(addr3, npgs * page);
+ (void)unlink(path);
+}
+
+ATF_TC_CLEANUP(mincore_residency, tc)
+{
+ (void)unlink(path);
+}
+
+ATF_TC(mincore_shmseg);
+ATF_TC_HEAD(mincore_shmseg, tc)
+{
+ atf_tc_set_md_var(tc, "descr", "residency of shared memory");
+}
+
+ATF_TC_BODY(mincore_shmseg, tc)
+{
+ size_t npgs = 128;
+ void *addr = NULL;
+ int shmid;
+
+ shmid = shmget(IPC_PRIVATE, npgs * page,
+ IPC_CREAT | S_IRUSR | S_IWUSR);
+
+ ATF_REQUIRE(shmid != -1);
+
+ addr = shmat(shmid, NULL, 0);
+
+ ATF_REQUIRE(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);
+
+ /*
+ * NOTE! Even though we have MADV_FREE'd the range,
+ * there is another reference (the kernel's) to the
+ * object which owns the pages. In this case, the
+ * kernel does not simply free the pages, as haphazardly
+ * freeing pages when there are still references to
+ * an object can cause data corruption (say, the other
+ * referencer doesn't expect the pages to be freed,
+ * and is surprised by the subsequent ZFOD).
+ *
+ * Because of this, we simply report the number of
+ * pages still resident, for information only.
+ */
+ npgs = check_residency(addr, npgs);
+
+ (void)fprintf(stderr, "%zu pages still resident\n", npgs);
+
+ ATF_REQUIRE(shmdt(addr) == 0);
+ ATF_REQUIRE(shmctl(shmid, IPC_RMID, NULL) == 0);
+}
+
ATF_TP_ADD_TCS(tp)
{
@@ -184,6 +399,8 @@
ATF_TP_ADD_TC(tp, mincore_err);
ATF_TP_ADD_TC(tp, mincore_incore);
+ ATF_TP_ADD_TC(tp, mincore_residency);
+ ATF_TP_ADD_TC(tp, mincore_shmseg);
return atf_no_error();
}
