qom: add the base Object class (v2)
[qemu.git] / fsdev / qemu-fsdev.c
1 /*
2 * Virtio 9p
3 *
4 * Copyright IBM, Corp. 2010
5 *
6 * Authors:
7 * Gautham R Shenoy <ego@in.ibm.com>
8 *
9 * This work is licensed under the terms of the GNU GPL, version 2. See
10 * the COPYING file in the top-level directory.
11 *
12 */
13 #include <stdio.h>
14 #include <string.h>
15 #include "qemu-fsdev.h"
16 #include "qemu-queue.h"
17 #include "osdep.h"
18 #include "qemu-common.h"
19 #include "qemu-config.h"
20
21 static QTAILQ_HEAD(FsDriverEntry_head, FsDriverListEntry) fsdriver_entries =
22 QTAILQ_HEAD_INITIALIZER(fsdriver_entries);
23
24 static FsDriverTable FsDrivers[] = {
25 { .name = "local", .ops = &local_ops},
26 #ifdef CONFIG_OPEN_BY_HANDLE
27 { .name = "handle", .ops = &handle_ops},
28 #endif
29 { .name = "synth", .ops = &synth_ops},
30 { .name = "proxy", .ops = &proxy_ops},
31 };
32
33 int qemu_fsdev_add(QemuOpts *opts)
34 {
35 int i;
36 struct FsDriverListEntry *fsle;
37 const char *fsdev_id = qemu_opts_id(opts);
38 const char *fsdriver = qemu_opt_get(opts, "fsdriver");
39 const char *writeout = qemu_opt_get(opts, "writeout");
40 bool ro = qemu_opt_get_bool(opts, "readonly", 0);
41
42 if (!fsdev_id) {
43 fprintf(stderr, "fsdev: No id specified\n");
44 return -1;
45 }
46
47 if (fsdriver) {
48 for (i = 0; i < ARRAY_SIZE(FsDrivers); i++) {
49 if (strcmp(FsDrivers[i].name, fsdriver) == 0) {
50 break;
51 }
52 }
53
54 if (i == ARRAY_SIZE(FsDrivers)) {
55 fprintf(stderr, "fsdev: fsdriver %s not found\n", fsdriver);
56 return -1;
57 }
58 } else {
59 fprintf(stderr, "fsdev: No fsdriver specified\n");
60 return -1;
61 }
62
63 fsle = g_malloc0(sizeof(*fsle));
64 fsle->fse.fsdev_id = g_strdup(fsdev_id);
65 fsle->fse.ops = FsDrivers[i].ops;
66 if (writeout) {
67 if (!strcmp(writeout, "immediate")) {
68 fsle->fse.export_flags |= V9FS_IMMEDIATE_WRITEOUT;
69 }
70 }
71 if (ro) {
72 fsle->fse.export_flags |= V9FS_RDONLY;
73 } else {
74 fsle->fse.export_flags &= ~V9FS_RDONLY;
75 }
76
77 if (fsle->fse.ops->parse_opts) {
78 if (fsle->fse.ops->parse_opts(opts, &fsle->fse)) {
79 return -1;
80 }
81 }
82
83 QTAILQ_INSERT_TAIL(&fsdriver_entries, fsle, next);
84 return 0;
85 }
86
87 FsDriverEntry *get_fsdev_fsentry(char *id)
88 {
89 if (id) {
90 struct FsDriverListEntry *fsle;
91
92 QTAILQ_FOREACH(fsle, &fsdriver_entries, next) {
93 if (strcmp(fsle->fse.fsdev_id, id) == 0) {
94 return &fsle->fse;
95 }
96 }
97 }
98 return NULL;
99 }
100
101 static void fsdev_register_config(void)
102 {
103 qemu_add_opts(&qemu_fsdev_opts);
104 qemu_add_opts(&qemu_virtfs_opts);
105 }
106 machine_init(fsdev_register_config);
107