qemu/fsdev/qemu-fsdev.c
Venkateswararao Jujjuri (JV) 9ce56db6f0 virtio-9p: Introduces an option to specify the security model.
The new option is:

-fsdev fstype,id=myid,path=/share_path/,security_model=[mapped|passthrough]
-virtfs fstype,path=/share_path/,security_model=[mapped|passthrough],mnt_tag=tag

In the case of mapped security model, files are created with QEMU user
credentials and the client-user's credentials are saved in extended attributes.
Whereas in the case of passthrough security model, files on the
filesystem are directly created with client-user's credentials.

Signed-off-by: Venkateswararao Jujjuri <jvrao@linux.vnet.ibm.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-06-22 15:15:30 -05:00

78 lines
1.8 KiB
C

/*
* 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 = &local_ops},
};
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;
}
if (qemu_opt_get(opts, "security_model") == NULL) {
fprintf(stderr, "fsdev: No security_model specified.\n");
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.security_model = qemu_strdup(qemu_opt_get(opts,
"security_model"));
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;
}