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
main(void)29 int 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