ia64/xen-unstable

view tools/blktap2/vhd/lib/vhd-util-set-field.c @ 19817:b7f73a7f3078

blktap2: portability fixes for NetBSD

- Use standard off_t and lseek() instead of non-portable off64_t and
lseek64()
- Use uuid API as documented in DCE 1.1 RPC specification
- Add NetBSD implementation for blk_getimagesize() and
blk_getsectorsize()
- Use blk_getimagesize() and blk_getsectorsize()
- Fix uuid header check

Signed-off-by: Christoph Egger <Christoph.Egger@amd.com>
Signed-off-by: Keir Fraser <keir.fraser@citrix.com>
author Keir Fraser <keir.fraser@citrix.com>
date Tue Jun 23 17:24:14 2009 +0100 (2009-06-23)
parents 1c627434605e
children
line source
1 /* Copyright (c) 2008, XenSource Inc.
2 * All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are met:
6 * * Redistributions of source code must retain the above copyright
7 * notice, this list of conditions and the following disclaimer.
8 * * Redistributions in binary form must reproduce the above copyright
9 * notice, this list of conditions and the following disclaimer in the
10 * documentation and/or other materials provided with the distribution.
11 * * Neither the name of XenSource Inc. nor the names of its contributors
12 * may be used to endorse or promote products derived from this software
13 * without specific prior written permission.
14 *
15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
18 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER
19 * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
20 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
21 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
22 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
23 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
24 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
25 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26 */
27 #include <errno.h>
28 #include <fcntl.h>
29 #include <stdio.h>
30 #include <stdlib.h>
31 #include <unistd.h>
33 #include "libvhd.h"
35 int
36 vhd_util_set_field(int argc, char **argv)
37 {
38 long value;
39 int err, c;
40 off_t eof;
41 vhd_context_t vhd;
42 char *name, *field;
44 err = -EINVAL;
45 value = 0;
46 name = NULL;
47 field = NULL;
49 if (!argc || !argv)
50 goto usage;
52 optind = 0;
53 while ((c = getopt(argc, argv, "n:f:v:h")) != -1) {
54 switch (c) {
55 case 'n':
56 name = optarg;
57 break;
58 case 'f':
59 field = optarg;
60 break;
61 case 'v':
62 err = 0;
63 value = strtol(optarg, NULL, 10);
64 break;
65 case 'h':
66 default:
67 goto usage;
68 }
69 }
71 if (!name || !field || optind != argc || err)
72 goto usage;
74 if (strnlen(field, 25) >= 25) {
75 printf("invalid field\n");
76 goto usage;
77 }
79 if (strcmp(field, "hidden")) {
80 printf("invalid field %s\n", field);
81 goto usage;
82 }
84 if (value < 0 || value > 255) {
85 printf("invalid value %ld\n", value);
86 goto usage;
87 }
89 err = vhd_open(&vhd, name, VHD_OPEN_RDWR);
90 if (err) {
91 printf("error opening %s: %d\n", name, err);
92 return err;
93 }
95 vhd.footer.hidden = (char)value;
97 err = vhd_write_footer(&vhd, &vhd.footer);
99 done:
100 vhd_close(&vhd);
101 return err;
103 usage:
104 printf("options: <-n name> <-f field> <-v value> [-h help]\n");
105 return -EINVAL;
106 }