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/*
* 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);
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