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Add some code to test sync'ing a PROT_WRITE+MAP_SHARED file.

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This commit is contained in:
thorpej 1999-07-14 21:10:13 +00:00
parent 8e06a75bcb
commit 11d1a47bbf
2 changed files with 72 additions and 3 deletions
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4
regress/sys/uvm/mmap/Makefile
View File

@ -1,8 +1,10 @@
# $NetBSD: Makefile,v 1.1 1999/06/19 00:53:32 thorpej Exp $
# $NetBSD: Makefile,v 1.2 1999/07/14 21:10:13 thorpej Exp $
PROG= mmap
MKMAN= no
CLEANFILES+= mapped_file
# This is hopefully just some file not mmap'd very often.
SOME_FILE=/usr/share/misc/zipcodes

71
regress/sys/uvm/mmap/mmap.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: mmap.c,v 1.2 1999/07/07 22:00:31 thorpej Exp $ */
/* $NetBSD: mmap.c,v 1.3 1999/07/14 21:10:13 thorpej Exp $ */
/*-
* Copyright (c) 1999 The NetBSD Foundation, Inc.
@ -60,6 +60,9 @@ int check_residency __P((void *, int));
int pgsize;
int verbose;
#define MAPPED_FILE "mapped_file"
#define TEST_PATTERN 0xa5
int
main(argc, argv)
int argc;
@ -67,8 +70,9 @@ main(argc, argv)
{
struct stat st;
void *addr, *addr2;
int ch, ecode, fd, npgs;
int i, ch, ecode, fd, npgs;
const char *filename;
u_int8_t *cp;
while ((ch = getopt(argc, argv, "v")) != -1) {
switch (ch) {
@ -223,6 +227,69 @@ main(argc, argv)
ecode = 1;
}
printf(">>> UNMAPPING ANONYMOUS REGIONS <<<\n");
(void) munmap(addr, npgs * pgsize);
(void) munmap(addr2, npgs * pgsize);
printf(">>> CREATING MAPPED FILE <<<\n");
(void) unlink(MAPPED_FILE);
if ((fd = open(MAPPED_FILE, O_RDWR|O_CREAT|O_TRUNC, 0666)) == -1)
err(1, "open %s", MAPPED_FILE);
if ((cp = malloc(npgs * pgsize)) == NULL)
err(1, "malloc %d bytes", npgs * pgsize);
memset(cp, 0x01, npgs * pgsize);
if (write(fd, cp, npgs * pgsize) != npgs * pgsize)
err(1, "write %s", MAPPED_FILE);
addr = mmap(NULL, npgs * pgsize, PROT_READ|PROT_WRITE,
MAP_FILE|MAP_SHARED, fd, (off_t) 0);
if (addr == MAP_FAILED)
err(1, "mmap %s", MAPPED_FILE);
(void) close(fd);
printf(" WRITING TEST PATTERN\n");
for (i = 0; i < npgs * pgsize; i++)
((u_int8_t *)addr)[i] = TEST_PATTERN;
printf(" SYNCING FILE\n");
if (msync(addr, npgs * pgsize, MS_SYNC|MS_INVALIDATE) == -1)
err(1, "msync %s", MAPPED_FILE);
printf(" UNMAPPING FILE\n");
(void) munmap(addr, npgs * pgsize);
printf(" READING FILE\n");
if ((fd = open(MAPPED_FILE, O_RDONLY, 0666)) == -1)
err(1, "open %s", MAPPED_FILE);
if (read(fd, cp, npgs * pgsize) != npgs * pgsize)
err(1, "read %s", MAPPED_FILE);
(void) close(fd);
printf(" CHECKING TEST PATTERN\n");
for (i = 0; i < npgs * pgsize; i++) {
if (cp[i] != TEST_PATTERN) {
printf(" INCORRECT BYTE AT OFFSET %d: "
"0x%02x should be 0x%02x\n", i, cp[i],
TEST_PATTERN);
ecode = 1;
break;
}
}
exit(ecode);
}