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
|
/* libguestfs
* Copyright (C) 2009 Red Hat Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <guestfs.h>
#include <caml/config.h>
#include <caml/alloc.h>
#include <caml/callback.h>
#include <caml/custom.h>
#include <caml/fail.h>
#include <caml/memory.h>
#include <caml/mlvalues.h>
#include "guestfs_c.h"
/* Allocate handles and deal with finalization. */
static void
guestfs_finalize (value gv)
{
guestfs_h *g = Guestfs_val (gv);
if (g) guestfs_close (g);
}
static struct custom_operations guestfs_custom_operations = {
"guestfs_custom_operations",
guestfs_finalize,
custom_compare_default,
custom_hash_default,
custom_serialize_default,
custom_deserialize_default
};
static value
Val_guestfs (guestfs_h *g)
{
CAMLparam0 ();
CAMLlocal1 (rv);
rv = caml_alloc_custom (&guestfs_custom_operations,
sizeof (guestfs_h *), 0, 1);
Guestfs_val (rv) = g;
CAMLreturn (rv);
}
/* Handle errors. */
/* XXX Like the current Perl bindings, this is unsafe in a multi-
* threaded environment.
*/
static char *last_error = NULL;
static void
error_handler (guestfs_h *g,
void *data,
const char *msg)
{
if (last_error != NULL) free (last_error);
last_error = strdup (msg);
}
void
ocaml_guestfs_raise_error (guestfs_h *g, const char *func)
{
CAMLparam0 ();
CAMLlocal1 (v);
v = caml_copy_string (last_error);
caml_raise_with_arg (*caml_named_value ("ocaml_guestfs_error"), v);
CAMLnoreturn;
}
/* Guestfs.create */
CAMLprim value
ocaml_guestfs_create (void)
{
CAMLparam0 ();
CAMLlocal1 (gv);
guestfs_h *g;
g = guestfs_create ();
if (g == NULL)
caml_failwith ("failed to create guestfs handle");
guestfs_set_error_handler (g, error_handler, NULL);
gv = Val_guestfs (g);
CAMLreturn (gv);
}
/* Guestfs.close */
CAMLprim value
ocaml_guestfs_close (value gv)
{
CAMLparam1 (gv);
guestfs_finalize (gv);
/* So we don't double-free in the finalizer. */
Guestfs_val (gv) = NULL;
CAMLreturn (Val_unit);
}
|
