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-rw-r--r--qemu/fsdev/qemu-fsdev.c101
1 files changed, 101 insertions, 0 deletions
diff --git a/qemu/fsdev/qemu-fsdev.c b/qemu/fsdev/qemu-fsdev.c
new file mode 100644
index 000000000..ccfec139a
--- /dev/null
+++ b/qemu/fsdev/qemu-fsdev.c
@@ -0,0 +1,101 @@
+/*
+ * Virtio 9p
+ *
+ * Copyright IBM, Corp. 2010
+ *
+ * Authors:
+ * Gautham R Shenoy <ego@in.ibm.com>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2. See
+ * the COPYING file in the top-level directory.
+ *
+ */
+#include <stdio.h>
+#include <string.h>
+#include "qemu-fsdev.h"
+#include "qemu/queue.h"
+#include "qemu/osdep.h"
+#include "qemu-common.h"
+#include "qemu/config-file.h"
+
+static QTAILQ_HEAD(FsDriverEntry_head, FsDriverListEntry) fsdriver_entries =
+ QTAILQ_HEAD_INITIALIZER(fsdriver_entries);
+
+static FsDriverTable FsDrivers[] = {
+ { .name = "local", .ops = &local_ops},
+#ifdef CONFIG_OPEN_BY_HANDLE
+ { .name = "handle", .ops = &handle_ops},
+#endif
+ { .name = "synth", .ops = &synth_ops},
+ { .name = "proxy", .ops = &proxy_ops},
+};
+
+int qemu_fsdev_add(QemuOpts *opts)
+{
+ int i;
+ struct FsDriverListEntry *fsle;
+ const char *fsdev_id = qemu_opts_id(opts);
+ const char *fsdriver = qemu_opt_get(opts, "fsdriver");
+ const char *writeout = qemu_opt_get(opts, "writeout");
+ bool ro = qemu_opt_get_bool(opts, "readonly", 0);
+
+ if (!fsdev_id) {
+ fprintf(stderr, "fsdev: No id specified\n");
+ return -1;
+ }
+
+ if (fsdriver) {
+ for (i = 0; i < ARRAY_SIZE(FsDrivers); i++) {
+ if (strcmp(FsDrivers[i].name, fsdriver) == 0) {
+ break;
+ }
+ }
+
+ if (i == ARRAY_SIZE(FsDrivers)) {
+ fprintf(stderr, "fsdev: fsdriver %s not found\n", fsdriver);
+ return -1;
+ }
+ } else {
+ fprintf(stderr, "fsdev: No fsdriver specified\n");
+ return -1;
+ }
+
+ fsle = g_malloc0(sizeof(*fsle));
+ fsle->fse.fsdev_id = g_strdup(fsdev_id);
+ fsle->fse.ops = FsDrivers[i].ops;
+ if (writeout) {
+ if (!strcmp(writeout, "immediate")) {
+ fsle->fse.export_flags |= V9FS_IMMEDIATE_WRITEOUT;
+ }
+ }
+ if (ro) {
+ fsle->fse.export_flags |= V9FS_RDONLY;
+ } else {
+ fsle->fse.export_flags &= ~V9FS_RDONLY;
+ }
+
+ if (fsle->fse.ops->parse_opts) {
+ if (fsle->fse.ops->parse_opts(opts, &fsle->fse)) {
+ g_free(fsle->fse.fsdev_id);
+ g_free(fsle);
+ return -1;
+ }
+ }
+
+ QTAILQ_INSERT_TAIL(&fsdriver_entries, fsle, next);
+ return 0;
+}
+
+FsDriverEntry *get_fsdev_fsentry(char *id)
+{
+ if (id) {
+ struct FsDriverListEntry *fsle;
+
+ QTAILQ_FOREACH(fsle, &fsdriver_entries, next) {
+ if (strcmp(fsle->fse.fsdev_id, id) == 0) {
+ return &fsle->fse;
+ }
+ }
+ }
+ return NULL;
+}