4 * Copyright IBM, Corp. 2010
7 * Anthony Liguori <aliguori@us.ibm.com>
9 * This work is licensed under the terms of the GNU GPL, version 2. See
10 * the COPYING file in the top-level directory.
14 #include "hw/virtio/virtio.h"
15 #include "hw/virtio/virtio-9p.h"
16 #include "hw/i386/pc.h"
17 #include "qemu/sockets.h"
18 #include "virtio-9p.h"
19 #include "fsdev/qemu-fsdev.h"
20 #include "virtio-9p-xattr.h"
21 #include "virtio-9p-coth.h"
24 #include "../tizen/src/maru_err_table.h"
25 // extern char* maru_convert_path(char* msg, const char *path);
28 static uint32_t virtio_9p_get_features(VirtIODevice *vdev, uint32_t features)
30 features |= 1 << VIRTIO_9P_MOUNT_TAG;
34 static void virtio_9p_get_config(VirtIODevice *vdev, uint8_t *config)
37 struct virtio_9p_config *cfg;
38 V9fsState *s = VIRTIO_9P(vdev);
41 cfg = g_malloc0(sizeof(struct virtio_9p_config) + len);
42 stw_raw(&cfg->tag_len, len);
43 /* We don't copy the terminating null to config space */
44 memcpy(cfg->tag, s->tag, len);
45 memcpy(config, cfg, s->config_size);
49 static int virtio_9p_device_init(VirtIODevice *vdev)
51 V9fsState *s = VIRTIO_9P(vdev);
57 virtio_init(VIRTIO_DEVICE(s), "virtio-9p", VIRTIO_ID_9P,
58 sizeof(struct virtio_9p_config) + MAX_TAG_LEN);
60 /* initialize pdu allocator */
61 QLIST_INIT(&s->free_list);
62 QLIST_INIT(&s->active_list);
63 for (i = 0; i < (MAX_REQ - 1); i++) {
64 QLIST_INSERT_HEAD(&s->free_list, &s->pdus[i], next);
67 s->vq = virtio_add_queue(vdev, MAX_REQ, handle_9p_output);
69 v9fs_path_init(&path);
71 fse = get_fsdev_fsentry(s->fsconf.fsdev_id);
74 /* We don't have a fsdev identified by fsdev_id */
75 fprintf(stderr, "Virtio-9p device couldn't find fsdev with the "
77 s->fsconf.fsdev_id ? s->fsconf.fsdev_id : "NULL");
82 /* we haven't specified a mount_tag */
83 fprintf(stderr, "fsdev with id %s needs mount_tag arguments\n",
88 s->ctx.export_flags = fse->export_flags;
89 s->ctx.fs_root = g_strdup(fse->path);
90 s->ctx.exops.get_st_gen = NULL;
91 len = strlen(s->fsconf.tag);
92 if (len > MAX_TAG_LEN - 1) {
93 fprintf(stderr, "mount tag '%s' (%d bytes) is longer than "
94 "maximum (%d bytes)", s->fsconf.tag, len, MAX_TAG_LEN - 1);
98 s->tag = g_strdup(s->fsconf.tag);
102 s->config_size = sizeof(struct virtio_9p_config) + len;
104 qemu_co_rwlock_init(&s->rename_lock);
106 if (s->ops->init(&s->ctx) < 0) {
107 fprintf(stderr, "Virtio-9p Failed to initialize fs-driver with id:%s"
108 " and export path:%s\n", s->fsconf.fsdev_id, s->ctx.fs_root);
110 const char _msg[] = "Failed to find the file sharing path. Check if the path is correct or not.\n\n";
111 char* err_msg = NULL;
112 err_msg = maru_convert_path((char*)_msg, s->ctx.fs_root);
113 maru_register_exit_msg(MARU_EXIT_UNKNOWN, err_msg);
121 if (v9fs_init_worker_threads() < 0) {
122 fprintf(stderr, "worker thread initialization failed\n");
127 * Check details of export path, We need to use fs driver
128 * call back to do that. Since we are in the init path, we don't
129 * use co-routines here.
133 if (s->ops->name_to_path(&s->ctx, NULL, "/", &path) < 0) {
135 if (s->ops->name_to_path(&s->ctx, NULL, "\\", &path) < 0) {
138 if (s->ops->name_to_path(&s->ctx, NULL, "/", &path) < 0) {
141 "error in converting name to path %s", strerror(errno));
144 if (s->ops->lstat(&s->ctx, &path, &stat)) {
145 fprintf(stderr, "share path %s does not exist\n", fse->path);
147 } else if (!S_ISDIR(stat.st_mode)) {
148 fprintf(stderr, "share path %s is not a directory\n", fse->path);
151 v9fs_path_free(&path);
155 g_free(s->ctx.fs_root);
157 virtio_cleanup(vdev);
158 v9fs_path_free(&path);
164 /* virtio-9p device */
166 static Property virtio_9p_properties[] = {
167 DEFINE_VIRTIO_9P_PROPERTIES(V9fsState, fsconf),
168 DEFINE_PROP_END_OF_LIST(),
171 static void virtio_9p_class_init(ObjectClass *klass, void *data)
173 DeviceClass *dc = DEVICE_CLASS(klass);
174 VirtioDeviceClass *vdc = VIRTIO_DEVICE_CLASS(klass);
175 dc->props = virtio_9p_properties;
176 set_bit(DEVICE_CATEGORY_STORAGE, dc->categories);
177 vdc->init = virtio_9p_device_init;
178 vdc->get_features = virtio_9p_get_features;
179 vdc->get_config = virtio_9p_get_config;
182 static const TypeInfo virtio_device_info = {
183 .name = TYPE_VIRTIO_9P,
184 .parent = TYPE_VIRTIO_DEVICE,
185 .instance_size = sizeof(V9fsState),
186 .class_init = virtio_9p_class_init,
189 static void virtio_9p_register_types(void)
191 type_register_static(&virtio_device_info);
194 type_init(virtio_9p_register_types)