Add qemu 2.4.0

[kvmfornfv.git] / qemu / fsdev / qemu-fsdev.c

diff --git a/qemu/fsdev/qemu-fsdev.c b/qemu/fsdev/qemu-fsdev.c
new file mode 100644 (file)
index 0000000..ccfec13
--- /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;
+}