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author | Gautham R Shenoy <ego@in.ibm.com> | 2010-04-29 17:44:43 +0530 |
---|---|---|
committer | Anthony Liguori <aliguori@us.ibm.com> | 2010-05-03 12:17:37 -0500 |
commit | 74db920c32cea5b52a91b81f2bfd467fc070e942 (patch) | |
tree | 5d24e75c376c281478fe4643e090e99eb044401d /fsdev | |
parent | a1c5975270f2335e1d7129c084a6e562d7b99bdd (diff) | |
download | qemu-74db920c32cea5b52a91b81f2bfd467fc070e942.zip qemu-74db920c32cea5b52a91b81f2bfd467fc070e942.tar.gz qemu-74db920c32cea5b52a91b81f2bfd467fc070e942.tar.bz2 |
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.c | 70 | ||||
-rw-r--r-- | fsdev/qemu-fsdev.h | 53 |
2 files changed, 123 insertions, 0 deletions
diff --git a/fsdev/qemu-fsdev.c b/fsdev/qemu-fsdev.c new file mode 100644 index 0000000..48bbfd9 --- /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 0000000..7fa4f60 --- /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 |