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