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/*
* This file and its contents are supplied under the terms of the
* Common Development and Distribution License ("CDDL"), version 1.0.
* You may only use this file in accordance with the terms of version
* 1.0 of the CDDL.
*
* A full copy of the text of the CDDL should have accompanied this
* source. A copy of the CDDL is also available via the Internet at
* http://www.illumos.org/license/CDDL.
*/
/*
* Copyright (c) 2015, Joyent, Inc.
*/
/*
* Verify that using MC_INHERIT_ZERO doesn't work on mappings that aren't
* anonymous private mappings.
*/
#include <sys/types.h>
#include <unistd.h>
#include <assert.h>
#include <sys/mman.h>
#include <string.h>
#include <errno.h>
#include <stdlib.h>
#include <wait.h>
#include <sys/stat.h>
#include <fcntl.h>
int
main(void)
{
void *buf;
int ret, fd;
char *template = "/tmp/inz_inval.XXXXXX";
char *tmpfile;
size_t mapsz = sysconf(_SC_PAGESIZE) * 2;
caddr_t bad = (caddr_t)(uintptr_t)23;
buf = mmap(NULL, mapsz, PROT_READ | PROT_WRITE,
MAP_PRIVATE | MAP_ANON, -1, 0);
assert(buf != MAP_FAILED);
/* Bad arguments to memcntl */
ret = memcntl(buf, mapsz, MC_INHERIT_ZERO, bad, 0, 0);
assert(ret == -1);
assert(errno == EINVAL);
ret = memcntl(buf, mapsz, MC_INHERIT_ZERO, 0, PROT_READ, 0);
assert(ret == -1);
assert(errno == EINVAL);
ret = memcntl(buf, mapsz, MC_INHERIT_ZERO, bad, PROT_READ | PRIVATE, 0);
assert(ret == -1);
assert(errno == EINVAL);
ret = memcntl(buf, mapsz, MC_INHERIT_ZERO, 0, 0, 1);
assert(ret == -1);
assert(errno == EINVAL);
ret = munmap(buf, mapsz);
assert(ret == 0);
/* Mapping non-existant region */
ret = memcntl(buf, mapsz, MC_INHERIT_ZERO, 0, 0, 0);
assert(ret == -1);
assert(errno == ENOMEM);
/* Map anon MAP_SHARED */
buf = mmap(NULL, mapsz, PROT_READ | PROT_WRITE,
MAP_SHARED | MAP_ANON, -1, 0);
assert(buf != MAP_FAILED);
ret = memcntl(buf, mapsz, MC_INHERIT_ZERO, 0, 0, 0);
assert(ret == -1);
assert(errno == EINVAL);
ret = munmap(buf, mapsz);
assert(ret == 0);
/* Grab a temp file and get it to be the right size */
tmpfile = strdup(template);
assert(tmpfile != NULL);
fd = mkstemp(tmpfile);
assert(fd >= 0);
ret = ftruncate(fd, mapsz);
assert(ret == 0);
/* MAP_PRIVATE file */
buf = mmap(NULL, mapsz, PROT_READ | PROT_WRITE, MAP_PRIVATE, fd, 0);
assert(buf != MAP_FAILED);
ret = memcntl(buf, mapsz, MC_INHERIT_ZERO, 0, 0, 0);
assert(ret == -1);
assert(errno == EINVAL);
ret = munmap(buf, mapsz);
assert(ret == 0);
/* MAP_SHARED file */
buf = mmap(NULL, mapsz, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
assert(buf != MAP_FAILED);
ret = memcntl(buf, mapsz, MC_INHERIT_ZERO, 0, 0, 0);
assert(ret == -1);
assert(errno == EINVAL);
ret = munmap(buf, mapsz);
assert(ret == 0);
ret = close(fd);
assert(ret == 0);
(void) unlink(tmpfile);
free(tmpfile);
return (0);
}
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