hw/net/can: sja1000 ignore CAN FD frames
[qemu.git] / chardev / char-file.c
1 /*
2 * QEMU System Emulator
3 *
4 * Copyright (c) 2003-2008 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24
25 #include "qemu/osdep.h"
26 #include "qapi/error.h"
27 #include "qemu/module.h"
28 #include "qemu/option.h"
29 #include "chardev/char.h"
30
31 #ifdef _WIN32
32 #include "chardev/char-win.h"
33 #else
34 #include "chardev/char-fd.h"
35 #endif
36
37 static void qmp_chardev_open_file(Chardev *chr,
38 ChardevBackend *backend,
39 bool *be_opened,
40 Error **errp)
41 {
42 ChardevFile *file = backend->u.file.data;
43 #ifdef _WIN32
44 HANDLE out;
45 DWORD accessmode;
46 DWORD flags;
47
48 if (file->has_in) {
49 error_setg(errp, "input file not supported");
50 return;
51 }
52
53 if (file->has_append && file->append) {
54 /* Append to file if it already exists. */
55 accessmode = FILE_GENERIC_WRITE & ~FILE_WRITE_DATA;
56 flags = OPEN_ALWAYS;
57 } else {
58 /* Truncate file if it already exists. */
59 accessmode = GENERIC_WRITE;
60 flags = CREATE_ALWAYS;
61 }
62
63 out = CreateFile(file->out, accessmode, FILE_SHARE_READ, NULL, flags,
64 FILE_ATTRIBUTE_NORMAL, NULL);
65 if (out == INVALID_HANDLE_VALUE) {
66 error_setg(errp, "open %s failed", file->out);
67 return;
68 }
69
70 win_chr_set_file(chr, out, false);
71 #else
72 int flags, in = -1, out;
73
74 flags = O_WRONLY | O_CREAT | O_BINARY;
75 if (file->has_append && file->append) {
76 flags |= O_APPEND;
77 } else {
78 flags |= O_TRUNC;
79 }
80
81 out = qmp_chardev_open_file_source(file->out, flags, errp);
82 if (out < 0) {
83 return;
84 }
85
86 if (file->has_in) {
87 flags = O_RDONLY;
88 in = qmp_chardev_open_file_source(file->in, flags, errp);
89 if (in < 0) {
90 qemu_close(out);
91 return;
92 }
93 }
94
95 qemu_chr_open_fd(chr, in, out);
96 #endif
97 }
98
99 static void qemu_chr_parse_file_out(QemuOpts *opts, ChardevBackend *backend,
100 Error **errp)
101 {
102 const char *path = qemu_opt_get(opts, "path");
103 ChardevFile *file;
104
105 backend->type = CHARDEV_BACKEND_KIND_FILE;
106 if (path == NULL) {
107 error_setg(errp, "chardev: file: no filename given");
108 return;
109 }
110 file = backend->u.file.data = g_new0(ChardevFile, 1);
111 qemu_chr_parse_common(opts, qapi_ChardevFile_base(file));
112 file->out = g_strdup(path);
113
114 file->has_append = true;
115 file->append = qemu_opt_get_bool(opts, "append", false);
116 }
117
118 static void char_file_class_init(ObjectClass *oc, void *data)
119 {
120 ChardevClass *cc = CHARDEV_CLASS(oc);
121
122 cc->parse = qemu_chr_parse_file_out;
123 cc->open = qmp_chardev_open_file;
124 }
125
126 static const TypeInfo char_file_type_info = {
127 .name = TYPE_CHARDEV_FILE,
128 #ifdef _WIN32
129 .parent = TYPE_CHARDEV_WIN,
130 #else
131 .parent = TYPE_CHARDEV_FD,
132 #endif
133 .class_init = char_file_class_init,
134 };
135
136 static void register_types(void)
137 {
138 type_register_static(&char_file_type_info);
139 }
140
141 type_init(register_types);