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