136 lines
3.6 KiB
C
136 lines
3.6 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"
|
|
#include "qemu-config.h"
|
|
|
|
static QTAILQ_HEAD(FsDriverEntry_head, FsDriverListEntry) fsdriver_entries =
|
|
QTAILQ_HEAD_INITIALIZER(fsdriver_entries);
|
|
|
|
static FsDriverTable FsDrivers[] = {
|
|
{ .name = "local", .ops = &local_ops},
|
|
{ .name = "handle", .ops = &handle_ops},
|
|
};
|
|
|
|
int qemu_fsdev_add(QemuOpts *opts)
|
|
{
|
|
struct FsDriverListEntry *fsle;
|
|
int i;
|
|
const char *fsdev_id = qemu_opts_id(opts);
|
|
const char *fsdriver = qemu_opt_get(opts, "fsdriver");
|
|
const char *path = qemu_opt_get(opts, "path");
|
|
const char *sec_model = qemu_opt_get(opts, "security_model");
|
|
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;
|
|
}
|
|
|
|
if (!strcmp(fsdriver, "local") && !sec_model) {
|
|
fprintf(stderr, "security model not specified, "
|
|
"local fs needs security model\nvalid options are:"
|
|
"\tsecurity_model=[passthrough|mapped|none]\n");
|
|
return -1;
|
|
}
|
|
|
|
if (strcmp(fsdriver, "local") && sec_model) {
|
|
fprintf(stderr, "only local fs driver needs security model\n");
|
|
return -1;
|
|
}
|
|
|
|
if (!path) {
|
|
fprintf(stderr, "fsdev: No path specified.\n");
|
|
return -1;
|
|
}
|
|
|
|
fsle = g_malloc(sizeof(*fsle));
|
|
|
|
fsle->fse.fsdev_id = g_strdup(fsdev_id);
|
|
fsle->fse.path = g_strdup(path);
|
|
fsle->fse.ops = FsDrivers[i].ops;
|
|
fsle->fse.export_flags = 0;
|
|
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 (strcmp(fsdriver, "local")) {
|
|
goto done;
|
|
}
|
|
|
|
if (!strcmp(sec_model, "passthrough")) {
|
|
fsle->fse.export_flags |= V9FS_SM_PASSTHROUGH;
|
|
} else if (!strcmp(sec_model, "mapped")) {
|
|
fsle->fse.export_flags |= V9FS_SM_MAPPED;
|
|
} else if (!strcmp(sec_model, "none")) {
|
|
fsle->fse.export_flags |= V9FS_SM_NONE;
|
|
} else {
|
|
fprintf(stderr, "Invalid security model %s specified, valid options are"
|
|
"\n\t [passthrough|mapped|none]\n", sec_model);
|
|
return -1;
|
|
}
|
|
done:
|
|
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;
|
|
}
|
|
|
|
static void fsdev_register_config(void)
|
|
{
|
|
qemu_add_opts(&qemu_fsdev_opts);
|
|
qemu_add_opts(&qemu_virtfs_opts);
|
|
}
|
|
machine_init(fsdev_register_config);
|
|
|