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
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
|
/* guestfish - the filesystem interactive shell
* Copyright (C) 2010 Red Hat Inc.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#include <config.h>
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <string.h>
#include <unistd.h>
#include "fish.h"
#include "prepopts.h"
static prep_data *parse_type_string (const char *type_string);
void
list_prepared_drives (void)
{
size_t i, j;
printf (_("List of available prepared disk images:\n\n"));
for (i = 0; i < NR_PREPS; ++i) {
printf (_("\
guestfish -N %-8s - %s\n\
\n\
%s\n"),
preps[i].name, preps[i].shortdesc, preps[i].longdesc);
if (preps[i].nr_params > 0) {
printf ("\n");
printf (_(" Optional parameters:\n"));
printf (" -N %s", preps[i].name);
for (j = 0; j < preps[i].nr_params; ++j)
printf (":<%s>", preps[i].params[j].pname);
printf ("\n");
for (j = 0; j < preps[i].nr_params; ++j) {
printf (" ");
printf (_("<%s> %s (default: %s)\n"),
preps[i].params[j].pname,
preps[i].params[j].pdesc,
preps[i].params[j].pdefault);
}
}
printf ("\n");
}
printf (_("\
Prepared disk images are written to file \"test1.img\" in the local\n\
directory. (\"test2.img\" etc if -N option is given multiple times).\n\
For more information see the guestfish(1) manual.\n"));
}
/* Parse the type string (from the command line) and create the output
* file 'filename'. This is called before launch. Return the opaque
* prep_data which will be passed back to us in prepare_drive below.
*/
prep_data *
create_prepared_file (const char *type_string, const char *filename)
{
prep_data *data = parse_type_string (type_string);
if (data->prep->prelaunch)
data->prep->prelaunch (filename, data);
return data;
}
static prep_data *
parse_type_string (const char *type_string)
{
size_t i;
/* Match on the type part (without parameters). */
size_t len = strcspn (type_string, ":");
for (i = 0; i < NR_PREPS; ++i)
if (STRCASEEQLEN (type_string, preps[i].name, len))
break;
if (i == NR_PREPS) {
fprintf (stderr, _("\
guestfish: -N parameter '%s': no such prepared disk image known.\n\
Use 'guestfish -N help' to list possible values for the -N parameter.\n"),
type_string);
exit (EXIT_FAILURE);
}
prep_data *data = malloc (sizeof *data);
if (data == NULL) {
perror ("malloc");
exit (EXIT_FAILURE);
}
data->prep = &preps[i];
data->orig_type_string = type_string;
/* Set up the optional parameters to all-defaults. */
data->params = malloc (data->prep->nr_params * sizeof (char *));
if (data->params == NULL) {
perror ("malloc");
exit (EXIT_FAILURE);
}
for (i = 0; i < data->prep->nr_params; ++i)
data->params[i] = bad_cast (data->prep->params[i].pdefault);
/* Parse the optional parameters. */
const char *p = type_string + len;
if (*p) p++; /* skip colon char */
i = 0;
while (*p) {
len = strcspn (p, ":");
data->params[i] = strndup (p, len);
if (data->params[i] == NULL) {
perror ("strndup");
exit (EXIT_FAILURE);
}
p += len;
if (*p) p++; /* skip colon char */
i++;
}
return data;
}
/* Prepare a drive. The appliance has been launched, and 'device' is
* the libguestfs device. 'data' is the requested type. 'filename'
* is just used for error messages.
*/
void
prepare_drive (const char *filename, prep_data *data,
const char *device)
{
if (data->prep->postlaunch)
data->prep->postlaunch (filename, data, device);
}
void
prep_error (prep_data *data, const char *filename, const char *fs, ...)
{
fprintf (stderr,
_("guestfish: error creating prepared disk image '%s' on '%s': "),
data->orig_type_string, filename);
va_list args;
va_start (args, fs);
vfprintf (stderr, fs, args);
va_end (args);
fprintf (stderr, "\n");
exit (EXIT_FAILURE);
}
void
free_prep_data (void *vp)
{
prep_data *data = vp;
size_t i;
for (i = 0; i < data->prep->nr_params; ++i)
if (data->params[i] != data->prep->params[i].pdefault)
free (data->params[i]);
free (data->params);
free (data);
}
|
