1 /*
2 * This file and its contents are supplied under the terms of the
3 * Common Development and Distribution License ("CDDL"), version 1.0.
4 * You may only use this file in accordance with the terms of version
5 * 1.0 of the CDDL.
6 *
7 * A full copy of the text of the CDDL should have accompanied this
8 * source. A copy of the CDDL is also available via the Internet at
9 * http://www.illumos.org/license/CDDL.
10 */
11
12 /*
13 * Copyright 2012 Jilin Xpd <jilinxpd@gmail.com>
14 * Copyright 2018 Nexenta Systems, Inc.
15 */
16
17 /*
18 * It doesn't matter if the userland forgets to close the file or
19 * munmap it, because smbfs will help close it(including otW close)
20 * and sync the dirty pages to the file.
21 * This program tests if smbfs works as we said.
22 */
23
24 #include <sys/mman.h>
25 #include <sys/types.h>
26 #include <sys/stat.h>
27 #include <fcntl.h>
28 #include <stdio.h>
29 #include <stdlib.h>
30 #include <unistd.h>
31 #include <string.h>
32 #include <errno.h>
33
34 int
main(int argc,char ** argv)35 main(int argc, char **argv)
36 {
37 char *file_addr;
38 off_t offset;
39 size_t filesize;
40 size_t blksize;
41 int fid;
42 int i;
43 char *c = "?#*%&";
44
45 if (argc != 2) {
46 fprintf(stderr, "\tusage:\n\tno_close <filename>\n");
47 return (1);
48 }
49
50 /* open test file */
51 fid = open(argv[1], O_RDWR | O_CREAT | O_TRUNC,
52 S_IRUSR | S_IWUSR | S_IROTH | S_IWOTH);
53 if (fid == -1) {
54 fprintf(stderr, "open %s error=%d\n", argv[1], errno);
55 return (1);
56 }
57
58 /* extend file */
59 filesize = 64 * 1024;
60 if (ftruncate(fid, filesize) == -1) {
61 fprintf(stderr, "ftrunc %s error=%d\n", argv[1], errno);
62 return (1);
63 }
64
65 /* map file */
66 file_addr = mmap(NULL, filesize,
67 PROT_READ | PROT_WRITE, MAP_SHARED, fid, 0);
68 if (file_addr == MAP_FAILED) {
69 fprintf(stderr, "mmap %s error=%d\n", argv[1], errno);
70 return (1);
71 }
72
73 /* write something into mapped addr */
74 blksize = filesize / 4;
75 for (i = 0, offset = 0; i < 4; i++, offset += blksize) {
76 memset(file_addr + offset, c[i], blksize);
77 }
78 memset(file_addr + offset, c[i], filesize - offset);
79
80 /* no msync, munmap, close */
81
82 _exit(0);
83 /* NOTREACHED */
84 }
85