ia64/xen-unstable

view tools/blktap/drivers/qcow-create.c @ 15783:c93e2a822d6f

[xen, xencomm] xencomm multiple page support
Current implementation doesn't allow struct xencomm_desc::address
array to be more than single page. On IA64 it causes 64GB+ domain
creation failure. This patch generalizes xencomm to allow multipage

Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
author kfraser@localhost.localdomain
date Tue Aug 28 15:32:27 2007 +0100 (2007-08-28)
parents 08fa19392d75
children b1da8762f853
line source
1 /* qcow-create.c
2 *
3 * Generates a qcow format disk.
4 *
5 * (c) 2006 Andrew Warfield and Julian Chesterfield
6 *
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License version 2
9 * as published by the Free Software Foundation; or, when distributed
10 * separately from the Linux kernel or incorporated into other
11 * software packages, subject to the following license:
12 *
13 * Permission is hereby granted, free of charge, to any person obtaining a copy
14 * of this source file (the "Software"), to deal in the Software without
15 * restriction, including without limitation the rights to use, copy, modify,
16 * merge, publish, distribute, sublicense, and/or sell copies of the Software,
17 * and to permit persons to whom the Software is furnished to do so, subject to
18 * the following conditions:
19 *
20 * The above copyright notice and this permission notice shall be included in
21 * all copies or substantial portions of the Software.
22 *
23 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
24 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
25 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
26 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
27 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
28 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
29 * IN THE SOFTWARE.
30 */
32 #include <errno.h>
33 #include <fcntl.h>
34 #include <stdio.h>
35 #include <stdlib.h>
36 #include <unistd.h>
37 #include <sys/statvfs.h>
38 #include <sys/stat.h>
39 #include <sys/ioctl.h>
40 #include <linux/fs.h>
41 #include <string.h>
42 #include "tapdisk.h"
44 #if 1
45 #define DFPRINTF(_f, _a...) fprintf ( stderr, _f , ## _a )
46 #else
47 #define DFPRINTF(_f, _a...) ((void)0)
48 #endif
50 #define MAX_NAME_LEN 1000
52 void help(void)
53 {
54 fprintf(stderr, "Qcow-utils: v1.0.0\n");
55 fprintf(stderr,
56 "usage: qcow-create [-h help] [-r reserve] <SIZE(MB)> <FILENAME> "
57 "[<BACKING_FILENAME>]\n");
58 exit(-1);
59 }
61 int main(int argc, char *argv[])
62 {
63 int ret = -1, c, backed = 0;
64 int sparse = 1;
65 uint64_t size;
66 char filename[MAX_NAME_LEN], bfilename[MAX_NAME_LEN];
68 for(;;) {
69 c = getopt(argc, argv, "hr");
70 if (c == -1)
71 break;
72 switch(c) {
73 case 'h':
74 help();
75 exit(0);
76 break;
77 case 'r':
78 sparse = 0;
79 break;
80 default:
81 fprintf(stderr, "Unknown option\n");
82 help();
83 }
84 }
86 printf("Optind %d, argc %d\n", optind, argc);
87 if ( !(optind == (argc - 2) || optind == (argc - 3)) )
88 help();
90 size = atoi(argv[optind++]);
91 size = size << 20;
93 if (snprintf(filename, MAX_NAME_LEN, "%s",argv[optind++]) >=
94 MAX_NAME_LEN) {
95 fprintf(stderr,"Device name too long\n");
96 exit(-1);
97 }
99 if (optind != argc) {
100 /*Backing file argument*/
101 backed = 1;
102 if (snprintf(bfilename, MAX_NAME_LEN, "%s",argv[optind++]) >=
103 MAX_NAME_LEN) {
104 fprintf(stderr,"Device name too long\n");
105 exit(-1);
106 }
107 }
109 DFPRINTF("Creating file size %llu, name %s\n",(long long unsigned)size, filename);
110 if (!backed)
111 ret = qcow_create(filename,size,NULL,sparse);
112 else
113 ret = qcow_create(filename,size,bfilename,sparse);
115 if (ret < 0)
116 DPRINTF("Unable to create QCOW file\n");
117 else
118 DPRINTF("QCOW file successfully created\n");
120 return 0;
121 }