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 #include "qemu-config.h"
  20
  21 static QTAILQ_HEAD(FsTypeEntry_head, FsTypeListEntry) fstype_entries =
  22     QTAILQ_HEAD_INITIALIZER(fstype_entries);
  23
  24 static FsTypeTable FsTypes[] = {
  25     { .name = "local", .ops = &local_ops},
  26 };
  27
  28 int qemu_fsdev_add(QemuOpts *opts)
  29 {
  30     struct FsTypeListEntry *fsle;
  31     int i;
  32
  33     if (qemu_opts_id(opts) == NULL) {
  34         fprintf(stderr, "fsdev: No id specified\n");
  35         return -1;
  36     }
  37
  38     for (i = 0; i < ARRAY_SIZE(FsTypes); i++) {
  39         if (strcmp(FsTypes[i].name, qemu_opt_get(opts, "fstype")) == 0) {
  40             break;
  41         }
  42     }
  43
  44     if (i == ARRAY_SIZE(FsTypes)) {
  45         fprintf(stderr, "fsdev: fstype %s not found\n",
  46                     qemu_opt_get(opts, "fstype"));
  47         return -1;
  48     }
  49
  50     if (qemu_opt_get(opts, "security_model") == NULL) {
  51         fprintf(stderr, "fsdev: No security_model specified.\n");
  52         return -1;
  53     }
  54
  55     fsle = qemu_malloc(sizeof(*fsle));
  56
  57     fsle->fse.fsdev_id = qemu_strdup(qemu_opts_id(opts));
  58     fsle->fse.path = qemu_strdup(qemu_opt_get(opts, "path"));
  59     fsle->fse.security_model = qemu_strdup(qemu_opt_get(opts,
  60                 "security_model"));
  61     fsle->fse.ops = FsTypes[i].ops;
  62
  63     QTAILQ_INSERT_TAIL(&fstype_entries, fsle, next);
  64     return 0;
  65
  66 }
  67
  68 FsTypeEntry *get_fsdev_fsentry(char *id)
  69 {
  70     struct FsTypeListEntry *fsle;
  71
  72     QTAILQ_FOREACH(fsle, &fstype_entries, next) {
  73         if (strcmp(fsle->fse.fsdev_id, id) == 0) {
  74             return &fsle->fse;
  75         }
  76     }
  77     return NULL;
  78 }
  79
  80 static void fsdev_register_config(void)
  81 {
  82     qemu_add_opts(&qemu_fsdev_opts);
  83     qemu_add_opts(&qemu_virtfs_opts);
  84 }
  85 machine_init(fsdev_register_config);
  86