108 lines
3.6 KiB
C
108 lines
3.6 KiB
C
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/*
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* Copyright (c) 2022-2022 Huawei Device Co., Ltd. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this list of
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* conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice, this list
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* of conditions and the following disclaimer in the documentation and/or other materials
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* provided with the distribution.
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*
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* 3. Neither the name of the copyright holder nor the names of its contributors may be used
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* to endorse or promote products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "vfs_maps.h"
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#include "vfs_operations.h"
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#include <stdlib.h>
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#include "securec.h"
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#include "los_debug.h"
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#include "los_compiler.h"
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#include "los_fs.h"
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struct FsMap *g_fsMap = NULL;
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struct FsMap *VfsFsMapGet(const char *fsType)
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{
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struct FsMap *curr = g_fsMap;
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(void)LOS_FsLock();
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while (curr != NULL) {
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if ((curr->fsType != NULL) && (fsType != NULL) &&
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(strcmp(curr->fsType, fsType) == 0)) {
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LOS_FsUnlock();
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return curr;
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}
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curr = curr->next;
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}
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LOS_FsUnlock();
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return NULL;
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}
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int OsFsRegister(const char *fsType, const struct MountOps *fsMops,
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const struct FileOps *fsFops, const struct FsManagement *fsMgt)
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{
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size_t len;
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if ((fsMops == NULL) || (fsFops == NULL)) {
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VFS_ERRNO_SET(EINVAL);
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return (int)LOS_NOK;
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}
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struct FsMap *newfs = (struct FsMap *)LOSCFG_FS_MALLOC_HOOK(sizeof(struct FsMap));
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if (newfs == NULL) {
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PRINT_ERR("Fs register malloc failed, fsType %s.\n", fsType);
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VFS_ERRNO_SET(ENOMEM);
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return (int)LOS_NOK;
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}
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(void)memset_s(newfs, sizeof(struct FsMap), 0, sizeof(struct FsMap));
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len = strlen(fsType) + 1;
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newfs->fsType = LOSCFG_FS_MALLOC_HOOK(len);
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if (newfs->fsType == NULL) {
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LOSCFG_FS_FREE_HOOK(newfs);
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VFS_ERRNO_SET(ENOMEM);
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return (int)LOS_NOK;
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}
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(void)strcpy_s((char *)newfs->fsType, len, fsType);
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newfs->fsMops = fsMops;
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newfs->fsFops = fsFops;
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newfs->fsMgt = fsMgt;
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newfs->fsRefs = 0;
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(void)LOS_FsLock();
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newfs->next = g_fsMap;
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g_fsMap = newfs;
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LOS_FsUnlock();
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return LOS_OK;
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}
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int LOS_FsRegister(const char *fsType, const struct MountOps *fsMops,
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const struct FileOps *fsFops, const struct FsManagement *fsMgt)
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{
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if (VfsFsMapGet(fsType) != NULL) {
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PRINT_ERR("fsType has been registered or fsType error\n");
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VFS_ERRNO_SET(EINVAL);
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return (int)LOS_NOK;
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}
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return OsFsRegister(fsType, fsMops, fsFops, fsMgt);
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}
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