hw/arm/virt-acpi-build: don't save VirtGuestInfo on AcpiBuildState
[qemu.git] / fsdev / qemu-fsdev.c
1 /*
2 * 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 "qemu/osdep.h"
14 #include "qemu-fsdev.h"
15 #include "qemu/queue.h"
16 #include "qemu-common.h"
17 #include "qemu/config-file.h"
18 #include "qemu/error-report.h"
19
20 static QTAILQ_HEAD(FsDriverEntry_head, FsDriverListEntry) fsdriver_entries =
21 QTAILQ_HEAD_INITIALIZER(fsdriver_entries);
22
23 static FsDriverTable FsDrivers[] = {
24 { .name = "local", .ops = &local_ops},
25 #ifdef CONFIG_OPEN_BY_HANDLE
26 { .name = "handle", .ops = &handle_ops},
27 #endif
28 { .name = "synth", .ops = &synth_ops},
29 { .name = "proxy", .ops = &proxy_ops},
30 };
31
32 int qemu_fsdev_add(QemuOpts *opts)
33 {
34 int i;
35 struct FsDriverListEntry *fsle;
36 const char *fsdev_id = qemu_opts_id(opts);
37 const char *fsdriver = qemu_opt_get(opts, "fsdriver");
38 const char *writeout = qemu_opt_get(opts, "writeout");
39 bool ro = qemu_opt_get_bool(opts, "readonly", 0);
40
41 if (!fsdev_id) {
42 error_report("fsdev: No id specified");
43 return -1;
44 }
45
46 if (fsdriver) {
47 for (i = 0; i < ARRAY_SIZE(FsDrivers); i++) {
48 if (strcmp(FsDrivers[i].name, fsdriver) == 0) {
49 break;
50 }
51 }
52
53 if (i == ARRAY_SIZE(FsDrivers)) {
54 error_report("fsdev: fsdriver %s not found", fsdriver);
55 return -1;
56 }
57 } else {
58 error_report("fsdev: No fsdriver specified");
59 return -1;
60 }
61
62 fsle = g_malloc0(sizeof(*fsle));
63 fsle->fse.fsdev_id = g_strdup(fsdev_id);
64 fsle->fse.ops = FsDrivers[i].ops;
65 if (writeout) {
66 if (!strcmp(writeout, "immediate")) {
67 fsle->fse.export_flags |= V9FS_IMMEDIATE_WRITEOUT;
68 }
69 }
70 if (ro) {
71 fsle->fse.export_flags |= V9FS_RDONLY;
72 } else {
73 fsle->fse.export_flags &= ~V9FS_RDONLY;
74 }
75
76 if (fsle->fse.ops->parse_opts) {
77 if (fsle->fse.ops->parse_opts(opts, &fsle->fse)) {
78 g_free(fsle->fse.fsdev_id);
79 g_free(fsle);
80 return -1;
81 }
82 }
83
84 QTAILQ_INSERT_TAIL(&fsdriver_entries, fsle, next);
85 return 0;
86 }
87
88 FsDriverEntry *get_fsdev_fsentry(char *id)
89 {
90 if (id) {
91 struct FsDriverListEntry *fsle;
92
93 QTAILQ_FOREACH(fsle, &fsdriver_entries, next) {
94 if (strcmp(fsle->fse.fsdev_id, id) == 0) {
95 return &fsle->fse;
96 }
97 }
98 }
99 return NULL;
100 }