1/*
2 * Copyright (c) 2002, Intel Corporation. All rights reserved.
3 * This file is licensed under the GPL license.  For the full content
4 * of this license, see the COPYING file at the top level of this
5 * source tree.
6 *
7 * The munmap() function shall fail if:
8 * [EINVAL] The len argument is 0.
9 *
10 */
11
12#define _XOPEN_SOURCE 600
13
14#include <pthread.h>
15#include <stdio.h>
16#include <stdlib.h>
17#include <unistd.h>
18#include <sys/mman.h>
19#include <sys/types.h>
20#include <sys/stat.h>
21#include <sys/wait.h>
22#include <fcntl.h>
23#include <string.h>
24#include <errno.h>
25#include "posixtest.h"
26
27#define TNAME "munmap/9-1.c"
28
29int main(void)
30{
31	char tmpfname[256];
32	long file_size;
33
34	void *pa = NULL;
35	void *addr = NULL;
36	size_t len;
37	int flag;
38	int fd;
39	off_t off = 0;
40	int prot;
41
42	int page_size;
43
44	page_size = sysconf(_SC_PAGE_SIZE);
45	file_size = 2 * page_size;
46
47	/* We hope to map 2 pages */
48	len = page_size + 1;
49
50	/* Create tmp file */
51	snprintf(tmpfname, sizeof(tmpfname), "/tmp/pts_munmap_1_1_%d",
52		 getpid());
53	unlink(tmpfname);
54	fd = open(tmpfname, O_CREAT | O_RDWR | O_EXCL, S_IRUSR | S_IWUSR);
55	if (fd == -1) {
56		printf(TNAME " Error at open(): %s\n", strerror(errno));
57		exit(PTS_UNRESOLVED);
58	}
59	unlink(tmpfname);
60
61	if (ftruncate(fd, file_size) == -1) {
62		printf("Error at ftruncate: %s\n", strerror(errno));
63		exit(PTS_UNRESOLVED);
64	}
65
66	flag = MAP_SHARED;
67	prot = PROT_READ | PROT_WRITE;
68	pa = mmap(addr, len, prot, flag, fd, off);
69	if (pa == MAP_FAILED) {
70		printf("Test Unresolved: " TNAME " Error at mmap: %s\n",
71		       strerror(errno));
72		exit(PTS_UNRESOLVED);
73	}
74
75	close(fd);
76
77	/* Set len as 0 */
78	if (munmap(pa, 0) == -1 && errno == EINVAL) {
79		printf("Get EINVAL when len=0\n");
80		printf("Test PASSED\n");
81		exit(PTS_PASS);
82	} else {
83		printf("Test Fail: Expect EINVAL while get %s\n",
84		       strerror(errno));
85		return PTS_FAIL;
86	}
87}
88