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d3ab98e691
writeout=immediate implies the after pwritev we do a sync_file_range. Reviewed-by: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com> Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
108 lines
2.6 KiB
C
108 lines
2.6 KiB
C
/*
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* Virtio 9p
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*
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* Copyright IBM, Corp. 2010
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*
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* Authors:
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* Gautham R Shenoy <ego@in.ibm.com>
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*
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* This work is licensed under the terms of the GNU GPL, version 2. See
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* the COPYING file in the top-level directory.
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*
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*/
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#include <stdio.h>
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#include <string.h>
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#include "qemu-fsdev.h"
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#include "qemu-queue.h"
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#include "osdep.h"
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#include "qemu-common.h"
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#include "qemu-config.h"
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static QTAILQ_HEAD(FsTypeEntry_head, FsTypeListEntry) fstype_entries =
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QTAILQ_HEAD_INITIALIZER(fstype_entries);
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static FsTypeTable FsTypes[] = {
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{ .name = "local", .ops = &local_ops},
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{ .name = "handle", .ops = &handle_ops},
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};
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int qemu_fsdev_add(QemuOpts *opts)
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{
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struct FsTypeListEntry *fsle;
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int i;
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const char *fsdev_id = qemu_opts_id(opts);
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const char *fstype = qemu_opt_get(opts, "fstype");
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const char *path = qemu_opt_get(opts, "path");
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const char *sec_model = qemu_opt_get(opts, "security_model");
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const char *writeout = qemu_opt_get(opts, "writeout");
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if (!fsdev_id) {
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fprintf(stderr, "fsdev: No id specified\n");
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return -1;
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}
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if (fstype) {
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for (i = 0; i < ARRAY_SIZE(FsTypes); i++) {
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if (strcmp(FsTypes[i].name, fstype) == 0) {
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break;
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}
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}
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if (i == ARRAY_SIZE(FsTypes)) {
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fprintf(stderr, "fsdev: fstype %s not found\n", fstype);
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return -1;
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}
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} else {
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fprintf(stderr, "fsdev: No fstype specified\n");
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return -1;
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}
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if (!sec_model) {
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fprintf(stderr, "fsdev: No security_model specified.\n");
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return -1;
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}
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if (!path) {
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fprintf(stderr, "fsdev: No path specified.\n");
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return -1;
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}
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fsle = g_malloc(sizeof(*fsle));
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fsle->fse.fsdev_id = g_strdup(fsdev_id);
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fsle->fse.path = g_strdup(path);
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fsle->fse.security_model = g_strdup(sec_model);
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fsle->fse.ops = FsTypes[i].ops;
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fsle->fse.export_flags = 0;
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if (writeout) {
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if (!strcmp(writeout, "immediate")) {
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fsle->fse.export_flags = V9FS_IMMEDIATE_WRITEOUT;
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}
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}
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QTAILQ_INSERT_TAIL(&fstype_entries, fsle, next);
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return 0;
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}
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FsTypeEntry *get_fsdev_fsentry(char *id)
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{
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if (id) {
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struct FsTypeListEntry *fsle;
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QTAILQ_FOREACH(fsle, &fstype_entries, next) {
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if (strcmp(fsle->fse.fsdev_id, id) == 0) {
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return &fsle->fse;
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}
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}
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}
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return NULL;
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}
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static void fsdev_register_config(void)
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{
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qemu_add_opts(&qemu_fsdev_opts);
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qemu_add_opts(&qemu_virtfs_opts);
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}
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machine_init(fsdev_register_config);
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