xref: /kernel/liteos_a/fs/vfs/operation/vfs_init.c (revision 0d163575) 
1/*
2 * Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
3 * Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without modification,
6 * are permitted provided that the following conditions are met:
7 *
8 * 1. Redistributions of source code must retain the above copyright notice, this list of
9 *    conditions and the following disclaimer.
10 *
11 * 2. Redistributions in binary form must reproduce the above copyright notice, this list
12 *    of conditions and the following disclaimer in the documentation and/or other materials
13 *    provided with the distribution.
14 *
15 * 3. Neither the name of the copyright holder nor the names of its contributors may be used
16 *    to endorse or promote products derived from this software without specific prior written
17 *    permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
21 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
23 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
24 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
25 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
26 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
27 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
28 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
29 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#include "disk_pri.h"
33#include "fcntl.h"
34#include "fs/file.h"
35#include "fs/fs_operation.h"
36#include "linux/spinlock.h"
37#include "los_init.h"
38#include "los_printf.h"
39#include "fs/mount.h"
40#include "path_cache.h"
41#include "sys/statfs.h"
42#include "unistd.h"
43#include "vnode.h"
44
45void los_vfs_init(void)
46{
47    uint retval;
48    static bool g_vfs_init = false;
49    if (g_vfs_init) {
50        return;
51    }
52
53#ifdef LOSCFG_FS_FAT_DISK
54    spin_lock_init(&g_diskSpinlock);
55    spin_lock_init(&g_diskFatBlockSpinlock);
56#endif
57    files_initialize();
58    files_initlist(&tg_filelist);
59
60    retval = VnodesInit();
61    if (retval != LOS_OK) {
62        PRINT_ERR("los_vfs_init VnodeInit failed error %d\n", retval);
63        return;
64    }
65
66    retval = PathCacheInit();
67    if (retval != LOS_OK) {
68        PRINT_ERR("los_vfs_init PathCacheInit failed error %d\n", retval);
69        return;
70    }
71    retval = VnodeHashInit();
72    if (retval != LOS_OK) {
73        PRINT_ERR("los_vfs_init VnodeHashInit failed error %d\n", retval);
74        return;
75    }
76
77    retval = VnodeDevInit();
78    if (retval != LOS_OK) {
79        PRINT_ERR("los_vfs_init VnodeDevInit failed error %d\n", retval);
80        return;
81    }
82
83    g_vfs_init = true;
84}
85
86LOS_MODULE_INIT(los_vfs_init, LOS_INIT_LEVEL_KMOD_BASIC);
87