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authorGautham R Shenoy <ego@in.ibm.com>2010-04-29 17:44:43 +0530
committerAnthony Liguori <aliguori@us.ibm.com>2010-05-03 12:17:37 -0500
commit74db920c32cea5b52a91b81f2bfd467fc070e942 (patch)
tree5d24e75c376c281478fe4643e090e99eb044401d /fsdev
parenta1c5975270f2335e1d7129c084a6e562d7b99bdd (diff)
virtio-9p: Create a commandline option -fsdev
This patch creates a new command line option named -fsdev to hold any file system specific information. The option will currently hold the following attributes: -fsdev fstype id=id,path=path_to_share where fstype: Type of the file system. id: Identifier used to refer to this fsdev path: The path on the host that is identified by this fsdev. [aneesh.kumar@linux.vnet.ibm.com: Abstraction using FsContext] Signed-off-by: Gautham R Shenoy <ego@in.ibm.com> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
Diffstat (limited to 'fsdev')
-rw-r--r--fsdev/qemu-fsdev.c70
-rw-r--r--fsdev/qemu-fsdev.h53
2 files changed, 123 insertions, 0 deletions
diff --git a/fsdev/qemu-fsdev.c b/fsdev/qemu-fsdev.c
new file mode 100644
index 000000000..48bbfd95e
--- /dev/null
+++ b/fsdev/qemu-fsdev.c
@@ -0,0 +1,70 @@
+/*
+ * 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 "osdep.h"
+#include "qemu-common.h"
+
+static QTAILQ_HEAD(FsTypeEntry_head, FsTypeListEntry) fstype_entries =
+ QTAILQ_HEAD_INITIALIZER(fstype_entries);
+
+static FsTypeTable FsTypes[] = {
+ { .name = "local", .ops = NULL},
+};
+
+int qemu_fsdev_add(QemuOpts *opts)
+{
+ struct FsTypeListEntry *fsle;
+ int i;
+
+ if (qemu_opts_id(opts) == NULL) {
+ fprintf(stderr, "fsdev: No id specified\n");
+ return -1;
+ }
+
+ for (i = 0; i < ARRAY_SIZE(FsTypes); i++) {
+ if (strcmp(FsTypes[i].name, qemu_opt_get(opts, "fstype")) == 0) {
+ break;
+ }
+ }
+
+ if (i == ARRAY_SIZE(FsTypes)) {
+ fprintf(stderr, "fsdev: fstype %s not found\n",
+ qemu_opt_get(opts, "fstype"));
+ return -1;
+ }
+
+ fsle = qemu_malloc(sizeof(*fsle));
+
+ fsle->fse.fsdev_id = qemu_strdup(qemu_opts_id(opts));
+ fsle->fse.path = qemu_strdup(qemu_opt_get(opts, "path"));
+ fsle->fse.ops = FsTypes[i].ops;
+
+ QTAILQ_INSERT_TAIL(&fstype_entries, fsle, next);
+ return 0;
+
+}
+
+FsTypeEntry *get_fsdev_fsentry(char *id)
+{
+ struct FsTypeListEntry *fsle;
+
+ QTAILQ_FOREACH(fsle, &fstype_entries, next) {
+ if (strcmp(fsle->fse.fsdev_id, id) == 0) {
+ return &fsle->fse;
+ }
+ }
+ return NULL;
+}
diff --git a/fsdev/qemu-fsdev.h b/fsdev/qemu-fsdev.h
new file mode 100644
index 000000000..7fa4f6037
--- /dev/null
+++ b/fsdev/qemu-fsdev.h
@@ -0,0 +1,53 @@
+/*
+ * 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.
+ *
+ */
+#ifndef QEMU_FSDEV_H
+#define QEMU_FSDEV_H
+#include "qemu-option.h"
+#include "hw/file-op-9p.h"
+
+
+/*
+ * A table to store the various file systems and their callback operations.
+ * -----------------
+ * fstype | ops
+ * -----------------
+ * local | local_ops
+ * . |
+ * . |
+ * . |
+ * . |
+ * -----------------
+ * etc
+ */
+typedef struct FsTypeTable {
+ const char *name;
+ FileOperations *ops;
+} FsTypeTable;
+
+/*
+ * Structure to store the various fsdev's passed through command line.
+ */
+typedef struct FsTypeEntry {
+ char *fsdev_id;
+ char *path;
+ FileOperations *ops;
+} FsTypeEntry;
+
+typedef struct FsTypeListEntry {
+ FsTypeEntry fse;
+ QTAILQ_ENTRY(FsTypeListEntry) next;
+} FsTypeListEntry;
+
+extern int qemu_fsdev_add(QemuOpts *opts);
+extern FsTypeEntry *get_fsdev_fsentry(char *id);
+#endif