fsdev/qemu-fsdev.c

   1 /*
   2  * Virtio 9p
   3  *
   4  * Copyright IBM, Corp. 2010
   5  *
   6  * Authors:
   7  *  Gautham R Shenoy <ego@in.ibm.com>
   8  *
   9  * This work is licensed under the terms of the GNU GPL, version 2.  See
  10  * the COPYING file in the top-level directory.
  11  *
  12  */
  13 #include <stdio.h>
  14 #include <string.h>
  15 #include "qemu-fsdev.h"
  16 #include "qemu-queue.h"
  17 #include "osdep.h"
  18 #include "qemu-common.h"
  19
  20 static QTAILQ_HEAD(FsTypeEntry_head, FsTypeListEntry) fstype_entries =
  21     QTAILQ_HEAD_INITIALIZER(fstype_entries);
  22
  23 static FsTypeTable FsTypes[] = {
  24     { .name = "local", .ops = &local_ops},
  25 };
  26
  27 int qemu_fsdev_add(QemuOpts *opts)
  28 {
  29     struct FsTypeListEntry *fsle;
  30     int i;
  31
  32     if (qemu_opts_id(opts) == NULL) {
  33         fprintf(stderr, "fsdev: No id specified\n");
  34         return -1;
  35     }
  36
  37     for (i = 0; i < ARRAY_SIZE(FsTypes); i++) {
  38         if (strcmp(FsTypes[i].name, qemu_opt_get(opts, "fstype")) == 0) {
  39             break;
  40         }
  41     }
  42
  43     if (i == ARRAY_SIZE(FsTypes)) {
  44         fprintf(stderr, "fsdev: fstype %s not found\n",
  45                     qemu_opt_get(opts, "fstype"));
  46         return -1;
  47     }
  48
  49     if (qemu_opt_get(opts, "security_model") == NULL) {
  50         fprintf(stderr, "fsdev: No security_model specified.\n");
  51         return -1;
  52     }
  53
  54     fsle = qemu_malloc(sizeof(*fsle));
  55
  56     fsle->fse.fsdev_id = qemu_strdup(qemu_opts_id(opts));
  57     fsle->fse.path = qemu_strdup(qemu_opt_get(opts, "path"));
  58     fsle->fse.security_model = qemu_strdup(qemu_opt_get(opts,
  59                 "security_model"));
  60     fsle->fse.ops = FsTypes[i].ops;
  61
  62     QTAILQ_INSERT_TAIL(&fstype_entries, fsle, next);
  63     return 0;
  64
  65 }
  66
  67 FsTypeEntry *get_fsdev_fsentry(char *id)
  68 {
  69     struct FsTypeListEntry *fsle;
  70
  71     QTAILQ_FOREACH(fsle, &fstype_entries, next) {
  72         if (strcmp(fsle->fse.fsdev_id, id) == 0) {
  73             return &fsle->fse;
  74         }
  75     }
  76     return NULL;
  77 }