openharmony_ci
Gitee
commit
f3562e490c
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@ -1,458 +0,0 @@
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/*
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* Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
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* Copyright (c) 2020-2021 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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*
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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_zpfs.h"
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#include <fcntl.h>
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#include <stdlib.h>
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#include <sys/statfs.h>
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#include <unistd.h>
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#include "fs/dirent_fs.h"
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#include "inode/inode.h"
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#include "internal.h"
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#include "los_tables.h"
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#include "los_vm_filemap.h"
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#ifdef LOSCFG_FS_ZPFS
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static int CheckEntryExist(const struct ZpfsEntry *zpfsEntry, char **fPath, struct stat *buf)
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{
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int ret;
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struct inode *inode = zpfsEntry->mountedInode;
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const char *path = zpfsEntry->mountedPath;
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const char *relPath = zpfsEntry->mountedRelpath;
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int len = strlen(path) + strlen(relPath) + 1;
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int fullLen = len + 1;
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char *fullPath = (char *)malloc(fullLen);
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if (fullPath == NULL) {
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return -1;
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}
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ret = snprintf_s(fullPath, fullLen, len, "%s/%s", path, relPath);
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if (ret < 0) {
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free(fullPath);
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return -1;
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}
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if (inode->u.i_mops->stat != NULL) {
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ret = inode->u.i_mops->stat(inode, fullPath, buf);
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} else {
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ret = -ENOSYS;
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}
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if (fPath == NULL) {
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free(fullPath);
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} else {
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*fPath = fullPath;
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}
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return ret;
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}
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static struct inode *GetRelInodeFromVInode(const ZpfsConfig *zpfsCfg,
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const char* relPath, struct stat *buf, char **finalPath)
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{
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int ret;
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struct ZpfsEntry entry;
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for (int i = 0; i < zpfsCfg->entryCount; i++) {
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entry.mountedPath = zpfsCfg->orgEntry[i].mountedRelpath;
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entry.mountedRelpath = (char*)relPath;
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entry.mountedInode = zpfsCfg->orgEntry[i].mountedInode;
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ret = CheckEntryExist(&entry, finalPath, buf);
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if (ret == OK) {
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return entry.mountedInode;
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}
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}
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return NULL;
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}
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/****************************************************************************
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* Name: VfsZpfsRealInode
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*
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* Description:
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* Get the inode which is hidden.
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*
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* Input Parameters:
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* The relative path.
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* Returned Value:
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* finalPath the relative path of the mount point.
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* OK
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* NULL memory is not enough.
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****************************************************************************/
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static inline struct inode *VfsZpfsRealInode(const ZpfsConfig *zpfsCfg, const char *relPath, char **finalPath)
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{
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struct stat buf;
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struct inode *inode = GetRelInodeFromVInode(zpfsCfg, relPath, &buf, finalPath);
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return inode;
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}
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static int VfsZpfsOpen(struct file *file, const char *relPath, int oflAgs, mode_t mode)
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{
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char *finalPath = NULL;
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struct inode *swapInode = NULL;
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int ret;
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struct inode *inode = file->f_inode;
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ZpfsConfig *zpfsCfg = GetZpfsConfig(inode);
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inode = VfsZpfsRealInode(zpfsCfg, relPath, &finalPath);
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if ((inode == NULL) || (!inode->u.i_mops->open)) {
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if (finalPath) {
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free(finalPath);
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}
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return -ENOENT;
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}
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swapInode = file->f_inode;
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file->f_inode = inode;
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ret = inode->u.i_mops->open(file, finalPath, oflAgs, mode);
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free(finalPath);
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finalPath = NULL;
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file->f_inode = swapInode;
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return ret;
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}
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static int VfsZpfsClose(struct file *file)
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{
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struct inode *swapInode = NULL;
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int ret;
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struct inode *inode = file->f_inode;
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ZpfsConfig *zpfsCfg = GetZpfsConfig(inode);
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inode = VfsZpfsRealInode(zpfsCfg, file->f_relpath, NULL);
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if ((inode == NULL) || (!inode->u.i_mops->close)) {
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return -ENOSYS;
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}
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swapInode = file->f_inode;
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file->f_inode = inode;
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ret = inode->u.i_mops->close(file);
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file->f_inode = swapInode;
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return ret;
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}
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static ssize_t VfsZpfsRead(struct file *file, char *buffer, size_t bufLen)
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{
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struct inode *swapInode = NULL;
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ssize_t sret;
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struct inode *inode = file->f_inode;
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ZpfsConfig *zpfsCfg = GetZpfsConfig(inode);
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inode = VfsZpfsRealInode(zpfsCfg, file->f_relpath, NULL);
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if ((inode == NULL) || (!inode->u.i_mops->read)) {
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return -ENOSYS;
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}
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swapInode = file->f_inode;
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file->f_inode = inode;
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sret = inode->u.i_mops->read(file, buffer, bufLen);
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file->f_inode = swapInode;
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return sret;
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}
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static off_t VfsZpfsLseek(struct file *file, off_t offset, int whence)
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{
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off_t off;
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struct inode *swapInode = NULL;
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struct inode *inode = file->f_inode;
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ZpfsConfig *zpfsCfg = GetZpfsConfig(inode);
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inode = VfsZpfsRealInode(zpfsCfg, file->f_relpath, NULL);
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if ((inode == NULL) || (!inode->u.i_mops->seek)) {
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return -ENOSYS;
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}
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swapInode = file->f_inode;
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file->f_inode = inode;
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off = inode->u.i_mops->seek(file, offset, whence);
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file->f_inode = swapInode;
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return off;
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}
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static loff_t VfsZpfsLseek64(struct file *file, loff_t offset, int whence)
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{
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loff_t off;
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struct inode *swapInode = NULL;
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struct inode *inode = file->f_inode;
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ZpfsConfig *zpfsCfg = GetZpfsConfig(inode);
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inode = VfsZpfsRealInode(zpfsCfg, file->f_relpath, NULL);
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if ((inode == NULL) || (!inode->u.i_mops->seek64)) {
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return -ENOSYS;
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}
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swapInode = file->f_inode;
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file->f_inode = inode;
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off = inode->u.i_mops->seek64(file, offset, whence);
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file->f_inode = swapInode;
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return off;
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}
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static int VfsZpfsDup(const struct file *oldFile, struct file *newFile)
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{
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int ret;
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struct inode *inode = oldFile->f_inode;
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ZpfsConfig *zpfsCfg = GetZpfsConfig(inode);
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inode = VfsZpfsRealInode(zpfsCfg, oldFile->f_relpath, NULL);
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if ((inode == NULL) || (!inode->u.i_mops->dup)) {
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return -ENOSYS;
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}
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ret = inode->u.i_mops->dup(oldFile, newFile);
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return ret;
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}
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static int VfsZpfsOpenDir(struct inode *mountpt, const char *relPath, struct fs_dirent_s *dir)
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{
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ZpfsConfig *zpfsCfg = GetZpfsConfig(mountpt);
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if (!VfsZpfsRealInode(zpfsCfg, relPath, NULL)) {
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return -ENOENT;
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}
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struct ZpfsDir *zpfsDir = malloc(sizeof(struct ZpfsDir));
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if (zpfsDir == NULL) {
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return -ENOMEM;
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}
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zpfsDir->relPath = strdup(relPath);
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if (zpfsDir->relPath == NULL) {
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return -ENOMEM;
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}
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zpfsDir->index = zpfsCfg->entryCount;
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zpfsDir->openEntry = -1;
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dir->u.zpfs = (void*)zpfsDir;
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return OK;
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}
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static void CloseEntry(const struct ZpfsConfig *zpfsCfg, struct fs_dirent_s *dir, const int index)
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{
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struct inode *inode = zpfsCfg->orgEntry[index].mountedInode;
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if (inode->u.i_mops->closedir != NULL) {
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inode->u.i_mops->closedir(inode, dir);
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}
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}
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static int VfsZpfsCloseDir(struct inode *mountpt, struct fs_dirent_s *dir)
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{
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struct ZpfsDir *zpfsDir = (struct ZpfsDir *)(dir->u.zpfs);
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if (zpfsDir->relPath) {
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free(zpfsDir->relPath);
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zpfsDir->relPath = NULL;
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}
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free(zpfsDir);
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zpfsDir = NULL;
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return OK;
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}
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static int IsExistInEntries(const struct ZpfsConfig *zpfsCfg, const char* relPath, const int index)
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{
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struct ZpfsEntry entry;
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struct stat buf;
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for (int i = index; i >= 0; i--) {
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entry.mountedPath = zpfsCfg->orgEntry[i].mountedRelpath;
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entry.mountedRelpath = (char *)relPath;
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entry.mountedInode = zpfsCfg->orgEntry[i].mountedInode;
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if (CheckEntryExist(&entry, NULL, &buf) == OK) {
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return OK;
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}
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}
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return -1;
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}
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static int OpenEntry(const struct ZpfsConfig *zpfsCfg,
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const struct ZpfsDir *zpfsDir, struct fs_dirent_s *dir, const int index)
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{
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int ret;
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char *fullPath;
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char *path = (char *)zpfsCfg->orgEntry[index].mountedRelpath;
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char *relPath = zpfsDir->relPath;
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struct inode *curInode = zpfsCfg->orgEntry[index].mountedInode;
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int len = strlen(path) + strlen(relPath) + 1;
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int fullLen = len + 1;
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fullPath = (char *)malloc(fullLen);
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if (fullPath == NULL) {
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return -ENOMEM;
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}
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ret = snprintf_s(fullPath, fullLen, len, "%s/%s", path, relPath);
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if (ret < 0) {
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free(fullPath);
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return -EINVAL;
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}
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ret = -ENOSYS;
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if (curInode->u.i_mops->opendir != NULL) {
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ret = curInode->u.i_mops->opendir(curInode, fullPath, dir);
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}
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free(fullPath);
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return ret;
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}
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static int VfsZpfsReadDir(struct inode *mountpt, struct fs_dirent_s *dir)
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{
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int ret;
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struct inode *oldInode = NULL;
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struct inode *curInode = NULL;
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struct ZpfsDir *zpfsDir = (struct ZpfsDir *)dir->u.zpfs;
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ZpfsConfig *zpfsCfg = GetZpfsConfig(mountpt);
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int index = zpfsDir->index;
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do {
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if (zpfsDir->openEntry == -1) {
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zpfsDir->index--;
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index = zpfsDir->index;
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if (index < 0) {
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ret = -1;
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break;
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}
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ret = OpenEntry(zpfsCfg, zpfsDir, dir, index);
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if (ret != OK) {
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break;
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}
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zpfsDir->openEntry = 1;
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}
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curInode = zpfsCfg->orgEntry[index].mountedInode;
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oldInode = dir->fd_root;
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dir->fd_root = curInode;
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ret = curInode->u.i_mops->readdir(curInode, dir);
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dir->fd_root = oldInode;
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if (ret != OK) {
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if (index >= 0) {
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CloseEntry(zpfsCfg, dir, index);
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zpfsDir->openEntry = -1;
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continue;
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}
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} else if (IsExistInEntries(zpfsCfg, dir->fd_dir[0].d_name, (index - 1)) == OK) {
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continue;
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}
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ret = 1; // 1 means current op return one file
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dir->fd_position++;
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dir->fd_dir[0].d_off = dir->fd_position;
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dir->fd_dir[0].d_reclen = (uint16_t)sizeof(struct dirent);
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break;
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} while (1);
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return ret;
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}
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static int VfsZpfsRewindDir(struct inode *mountpt, struct fs_dirent_s *dir)
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{
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PRINT_DEBUG("%s NOT support!\n", __FUNCTION__);
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return OK;
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}
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static int VfsZpfsBind(struct inode *blkDriver, const void *data, void **handle, const char *relPath)
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{
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if (data == NULL) {
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return -1;
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}
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(*handle) = (void*)data;
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return OK;
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}
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static int VfsZpfsUnbind(void *handle, struct inode **blkDriver)
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{
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struct inode *node = NULL;
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ZpfsConfig *zpfsCfg = NULL;
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if (handle != NULL) {
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zpfsCfg = (ZpfsConfig *)handle;
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node = inode_unlink(zpfsCfg->patchTarget);
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INODE_SET_TYPE(node, FSNODEFLAG_DELETED);
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if (node != zpfsCfg->patchInode) {
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return -EINVAL;
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}
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}
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return OK;
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}
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static int VfsZpfsStatFs(struct inode *mountpt, struct statfs *buf)
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{
|
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if (buf == NULL) {
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return -EINVAL;
|
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}
|
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(void)memset_s(buf, sizeof(struct statfs), 0, sizeof(struct statfs));
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buf->f_type = ZPFS_MAGIC;
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return OK;
|
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}
|
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|
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static int VfsZpfsStat(struct inode *mountpt, const char *relPath, struct stat *buf)
|
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{
|
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struct inode *inode = NULL;
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ZpfsConfig *zpfsCfg = GetZpfsConfig(mountpt);
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inode = GetRelInodeFromVInode(zpfsCfg, relPath, buf, NULL);
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if (inode == NULL) {
|
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return -ENOENT;
|
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}
|
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return OK;
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}
|
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|
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const struct mountpt_operations zpfsOperations = {
|
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VfsZpfsOpen, /* open */
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VfsZpfsClose, /* close */
|
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VfsZpfsRead, /* read */
|
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NULL, /* write */
|
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VfsZpfsLseek, /* seek */
|
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NULL, /* ioctl */
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OsVfsFileMmap, /* mmap */
|
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NULL, /* sync */
|
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VfsZpfsDup, /* dup */
|
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NULL, /* fstat */
|
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NULL, /* truncate */
|
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VfsZpfsOpenDir, /* opendir */
|
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VfsZpfsCloseDir, /* closedir */
|
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VfsZpfsReadDir, /* readdir */
|
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VfsZpfsRewindDir, /* rewinddir */
|
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VfsZpfsBind, /* bind */
|
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VfsZpfsUnbind, /* unbind */
|
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VfsZpfsStatFs, /* statfs */
|
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NULL, /* virstatfs */
|
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NULL, /* unlink */
|
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NULL, /* mkdir */
|
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NULL, /* rmdir */
|
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NULL, /* rename */
|
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VfsZpfsStat, /* stat */
|
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NULL, /* utime */
|
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NULL, /* chattr */
|
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VfsZpfsLseek64, /* seek64 */
|
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NULL, /* getlabel */
|
||||
NULL, /* fallocate */
|
||||
NULL, /* fallocate64 */
|
||||
NULL, /* truncate64 */
|
||||
NULL, /* fscheck */
|
||||
NULL, /* map_pages */
|
||||
NULL, /* readpage */
|
||||
NULL, /* writepage */
|
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};
|
||||
|
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FSMAP_ENTRY(zpfs_fsmap, ZPFS_NAME, zpfsOperations, FALSE, FALSE);
|
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|
||||
#endif // LOSCFG_FS_ZPFS
|
||||
|
|
@ -1,73 +0,0 @@
|
|||
/*
|
||||
* Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
|
||||
* Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without modification,
|
||||
* are permitted provided that the following conditions are met:
|
||||
*
|
||||
* 1. Redistributions of source code must retain the above copyright notice, this list of
|
||||
* conditions and the following disclaimer.
|
||||
*
|
||||
* 2. Redistributions in binary form must reproduce the above copyright notice, this list
|
||||
* of conditions and the following disclaimer in the documentation and/or other materials
|
||||
* provided with the distribution.
|
||||
*
|
||||
* 3. Neither the name of the copyright holder nor the names of its contributors may be used
|
||||
* to endorse or promote products derived from this software without specific prior written
|
||||
* permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
|
||||
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
||||
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
|
||||
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
|
||||
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
||||
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
|
||||
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
||||
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
|
||||
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
|
||||
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#ifndef ZPFS_VFS_ZPFS_H
|
||||
#define ZPFS_VFS_ZPFS_H
|
||||
|
||||
#include "compiler.h"
|
||||
#include "los_base.h"
|
||||
#include "los_typedef.h"
|
||||
|
||||
#ifdef LOSCFG_FS_ZPFS
|
||||
|
||||
#define ZPFS_NAME "zpfs"
|
||||
#define ZPFS_LEVELS 3
|
||||
|
||||
typedef struct ZpfsDir {
|
||||
char *relPath;
|
||||
int index;
|
||||
int openEntry;
|
||||
} ZpfsDir;
|
||||
|
||||
typedef struct ZpfsEntry {
|
||||
struct inode *mountedInode;
|
||||
char *mountedPath;
|
||||
char *mountedRelpath;
|
||||
} ZpfsEntry;
|
||||
|
||||
typedef struct ZpfsConfig {
|
||||
char *patchTarget;
|
||||
struct inode *patchTargetInode;
|
||||
struct inode *patchInode;
|
||||
|
||||
int entryCount;
|
||||
ZpfsEntry orgEntry[ZPFS_LEVELS];
|
||||
} ZpfsConfig;
|
||||
|
||||
ZpfsConfig *GetZpfsConfig(const struct inode *inode);
|
||||
int ZpfsPrepare(const char *source, const char *target, struct inode **inodePtr, bool force);
|
||||
void ZpfsFreeConfig(ZpfsConfig *zpfsCfg);
|
||||
void ZpfsCleanUp(const void *node, const char *target);
|
||||
bool IsZpfsFileSystem(struct inode *inode);
|
||||
|
||||
#endif /* LOSCFG_FS_ZPFS */
|
||||
|
||||
#endif /* ZPFS_VFS_ZPFS_H */
|
||||
464
fs/zpfs/zpfs.c
464
fs/zpfs/zpfs.c
|
|
@ -1,464 +0,0 @@
|
|||
/*
|
||||
* Copyright (c) 2013-2019 Huawei Technologies Co., Ltd. All rights reserved.
|
||||
* Copyright (c) 2020-2021 Huawei Device Co., Ltd. All rights reserved.
|
||||
*
|
||||
* Redistribution and use in source and binary forms, with or without modification,
|
||||
* are permitted provided that the following conditions are met:
|
||||
*
|
||||
* 1. Redistributions of source code must retain the above copyright notice, this list of
|
||||
* conditions and the following disclaimer.
|
||||
*
|
||||
* 2. Redistributions in binary form must reproduce the above copyright notice, this list
|
||||
* of conditions and the following disclaimer in the documentation and/or other materials
|
||||
* provided with the distribution.
|
||||
*
|
||||
* 3. Neither the name of the copyright holder nor the names of its contributors may be used
|
||||
* to endorse or promote products derived from this software without specific prior written
|
||||
* permission.
|
||||
*
|
||||
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
||||
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
|
||||
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
|
||||
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR
|
||||
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
|
||||
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
|
||||
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
|
||||
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
|
||||
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
|
||||
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
|
||||
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
||||
*/
|
||||
|
||||
#include "vfs_zpfs.h"
|
||||
|
||||
#include <stdlib.h>
|
||||
#include <unistd.h>
|
||||
|
||||
#include <fcntl.h>
|
||||
#include <sys/statfs.h>
|
||||
|
||||
#include "fs/dirent_fs.h"
|
||||
#include "inode/inode.h"
|
||||
#include "internal.h"
|
||||
#include "los_tables.h"
|
||||
|
||||
#ifdef LOSCFG_FS_ZPFS
|
||||
|
||||
/****************************************************************************
|
||||
* Name: CheckEntryExist
|
||||
*
|
||||
* Description:
|
||||
* check if entry is exist or not.
|
||||
* Input Parameters:
|
||||
* The path
|
||||
* Returned Value:
|
||||
* true or false, it is true for the exist of path.
|
||||
****************************************************************************/
|
||||
bool CheckEntryExist(const char *entry)
|
||||
{
|
||||
struct stat64 stat64Info;
|
||||
struct stat statInfo;
|
||||
|
||||
if (stat64(entry, &stat64Info) == 0) {
|
||||
if (S_ISDIR(stat64Info.st_mode) != 0) {
|
||||
return true;
|
||||
} else {
|
||||
return false;
|
||||
}
|
||||
} else if (stat(entry, &statInfo) == 0) {
|
||||
if (S_ISDIR(statInfo.st_mode) != 0) {
|
||||
return true;
|
||||
} else {
|
||||
return false;
|
||||
}
|
||||
}
|
||||
|
||||
return false;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: GetZpfsConfig
|
||||
*
|
||||
* Description:
|
||||
* get the zpfs configuration
|
||||
* Input Parameters:
|
||||
* void
|
||||
* Returned Value:
|
||||
* g_zpfsConfig Save the patch gobal data.
|
||||
****************************************************************************/
|
||||
ZpfsConfig *GetZpfsConfig(const struct inode *inode)
|
||||
{
|
||||
ZpfsConfig *zpfsCfg = (ZpfsConfig*)(inode->i_private);
|
||||
return zpfsCfg;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: GetSourceList
|
||||
*
|
||||
* Description:
|
||||
* Get the source path list.
|
||||
* eg: /patch/etc:/patch/etc1:/patch/etc2
|
||||
* Input Parameters:
|
||||
* source: /patch/etc:/patch/etc1:/patch/etc2
|
||||
* sourcelist: output path arry
|
||||
* num: output list num
|
||||
*
|
||||
* Returned Value:
|
||||
* OK The mounted folder parameter is right.
|
||||
* EINVAL The mounted folder parameter is wrong.
|
||||
* ENOMEM The memory is not enough
|
||||
****************************************************************************/
|
||||
static int GetSourceList(const char *source, char *sourceList[ZPFS_LEVELS], int *num)
|
||||
{
|
||||
char *subSource = NULL;
|
||||
char *path = NULL;
|
||||
char *subPath = NULL;
|
||||
int index;
|
||||
int ret;
|
||||
|
||||
subSource = strdup(source);
|
||||
if (subSource == NULL) {
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
subPath = strtok_r(subSource, ":", &path);
|
||||
for (*num = 0; *num < ZPFS_LEVELS && subPath != NULL; (*num)++) {
|
||||
sourceList[*num] = strdup(subPath);
|
||||
if (sourceList[*num] == NULL) {
|
||||
ret = -ENOMEM;
|
||||
goto EXIT;
|
||||
}
|
||||
subPath = strtok_r(NULL, ":", &path);
|
||||
}
|
||||
|
||||
if (subPath != NULL || *num == 0) {
|
||||
PRINTK("source path num %d error\n", *num);
|
||||
ret = -EINVAL;
|
||||
goto EXIT;
|
||||
}
|
||||
|
||||
free(subSource);
|
||||
return OK;
|
||||
|
||||
EXIT:
|
||||
free(subSource);
|
||||
for (index = 0; index < *num; index++) {
|
||||
free(sourceList[index]);
|
||||
sourceList[index] = NULL;
|
||||
}
|
||||
*num = 0;
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
||||
/****************************************************************************
|
||||
* Name: CheckInputParamsFormat
|
||||
*
|
||||
* Description:
|
||||
* check the mounted folder format and validity. MAX three segment.
|
||||
* eg: /patch/etc:/patch/etc1:/patch/etc2
|
||||
* Input Parameters:
|
||||
* check the mounted folder. eg:
|
||||
* source: /patch/etc:/patch/etc1:/patch/etc2
|
||||
* target: /etc
|
||||
*
|
||||
* Returned Value:
|
||||
* OK The mounted folder parameter is right.
|
||||
* EINVAL The mounted folder parameter is wrong.
|
||||
* ENOMEM The memory is not enough
|
||||
****************************************************************************/
|
||||
static int CheckInputParamsFormat(const char *source, const char *target)
|
||||
{
|
||||
char *sourceList[ZPFS_LEVELS] = {0};
|
||||
int num = 0;
|
||||
int ret;
|
||||
int index;
|
||||
bool isTargetValid = false;
|
||||
|
||||
if (source == NULL || target == NULL) {
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
ret = GetSourceList(source, sourceList, &num);
|
||||
if (ret != OK) {
|
||||
goto EXIT;
|
||||
}
|
||||
|
||||
for (index = 0; index < num; index++) {
|
||||
if (!CheckEntryExist(sourceList[index])) {
|
||||
ret = -ENOENT;
|
||||
goto EXIT;
|
||||
}
|
||||
/* target must same with one source path */
|
||||
if (strcmp(target, sourceList[index]) == 0) {
|
||||
isTargetValid = true;
|
||||
}
|
||||
}
|
||||
|
||||
if (!isTargetValid) {
|
||||
ret = -EINVAL;
|
||||
goto EXIT;
|
||||
}
|
||||
ret = OK;
|
||||
EXIT:
|
||||
for (index = 0; index < num; index++) {
|
||||
free(sourceList[index]);
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
static void ZpfsFreeEntry(ZpfsEntry *zpfsEntry)
|
||||
{
|
||||
if (zpfsEntry->mountedPath != NULL) {
|
||||
free(zpfsEntry->mountedPath);
|
||||
zpfsEntry->mountedPath = NULL;
|
||||
}
|
||||
if (zpfsEntry->mountedRelpath != NULL) {
|
||||
free(zpfsEntry->mountedRelpath);
|
||||
zpfsEntry->mountedRelpath = NULL;
|
||||
}
|
||||
zpfsEntry->mountedInode = NULL;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: ZpfsFreeConfig
|
||||
*
|
||||
* Description:
|
||||
* Umount the patch file system,
|
||||
* Delete the global patch data and the mount pseudo point.
|
||||
*
|
||||
* Input Parameters:
|
||||
* void
|
||||
* Returned Value:
|
||||
* void
|
||||
****************************************************************************/
|
||||
void ZpfsFreeConfig(ZpfsConfig *zpfsCfg)
|
||||
{
|
||||
struct inode *pInode = NULL;
|
||||
if (zpfsCfg == NULL) {
|
||||
return;
|
||||
}
|
||||
pInode = zpfsCfg->patchInode;
|
||||
if (pInode != NULL) {
|
||||
INODE_SET_TYPE(pInode, FSNODEFLAG_DELETED);
|
||||
inode_release(pInode);
|
||||
pInode = NULL;
|
||||
}
|
||||
|
||||
for (int i = 0; i < zpfsCfg->entryCount; i++) {
|
||||
ZpfsFreeEntry(&(zpfsCfg->orgEntry[i]));
|
||||
}
|
||||
if (zpfsCfg->patchTarget != NULL) {
|
||||
free(zpfsCfg->patchTarget);
|
||||
zpfsCfg->patchTarget = NULL;
|
||||
}
|
||||
free(zpfsCfg);
|
||||
zpfsCfg = NULL;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: IsTargetMounted
|
||||
* Description:
|
||||
* The mount patch target path must be the mounted path.
|
||||
* Input Parameters:
|
||||
* target: The mount point
|
||||
* Returned Value:
|
||||
* OK
|
||||
* EINVAL The mount patch target path is not the mounted path.
|
||||
****************************************************************************/
|
||||
static int IsTargetMounted(const char *target)
|
||||
{
|
||||
struct inode *inode = NULL;
|
||||
char *path = NULL;
|
||||
struct statfs buf;
|
||||
|
||||
if (!CheckEntryExist(target)) {
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
inode = inode_search((const char **)&target, (struct inode**)NULL,
|
||||
(struct inode**)NULL, (const char **)&path);
|
||||
if (inode == NULL || !INODE_IS_MOUNTPT(inode)) {
|
||||
PRINT_ERR("Can't to mount to this inode %s\n", target);
|
||||
return -EINVAL;
|
||||
}
|
||||
if ((inode->u.i_mops != NULL) && (inode->u.i_mops->statfs != NULL)) {
|
||||
if (inode->u.i_mops->statfs(inode, &buf) == OK) {
|
||||
if (buf.f_type == ZPFS_MAGIC) {
|
||||
return -EEXIST;
|
||||
}
|
||||
}
|
||||
}
|
||||
if (path == NULL || path[0] == '\0') {
|
||||
return -EEXIST;
|
||||
}
|
||||
return OK;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: SaveZpfsParameter
|
||||
*
|
||||
* Description:
|
||||
* When the patch file system is mounted, the patch gobal data is built.
|
||||
*
|
||||
* Input Parameters:
|
||||
* source: The mounted patch folder
|
||||
* target: The mount point
|
||||
* Returned Value:
|
||||
* OK Save the patch gobal data.
|
||||
* ENOMEM The memory is not enough.
|
||||
* EBADMSG There is no data.
|
||||
****************************************************************************/
|
||||
static int SaveZpfsParameter(const char *source, const char *target, struct ZpfsConfig *zpfsCfg)
|
||||
{
|
||||
int ret;
|
||||
const char *path = NULL;
|
||||
int num = 0;
|
||||
int index;
|
||||
char *sourceList[ZPFS_LEVELS] = {0};
|
||||
|
||||
/* save the mount point */
|
||||
zpfsCfg->patchTarget = strdup(target);
|
||||
if (zpfsCfg->patchTarget == NULL) {
|
||||
return -ENOMEM;
|
||||
}
|
||||
|
||||
/* save the mount folder inode */
|
||||
zpfsCfg->patchTargetInode = inode_search((const char **)&target,
|
||||
(struct inode**)NULL, (struct inode**)NULL, &path);
|
||||
if (zpfsCfg->patchTargetInode == NULL) {
|
||||
return -EINVAL;
|
||||
}
|
||||
|
||||
ret = GetSourceList(source, sourceList, &num);
|
||||
if (ret != OK) {
|
||||
return ret;
|
||||
}
|
||||
|
||||
zpfsCfg->entryCount = num;
|
||||
for (index = 0; index < num; index++) {
|
||||
zpfsCfg->orgEntry[index].mountedPath = sourceList[index];
|
||||
|
||||
/* save the mounted folder inode */
|
||||
zpfsCfg->orgEntry[index].mountedInode = inode_search((const char **)&sourceList[index],
|
||||
(struct inode**)NULL, (struct inode**)NULL, &path);
|
||||
if (zpfsCfg->orgEntry[index].mountedInode == NULL) {
|
||||
ret = -EINVAL;
|
||||
goto ERROR_PROCESS;
|
||||
}
|
||||
|
||||
/* save the mounted relative path */
|
||||
zpfsCfg->orgEntry[index].mountedRelpath = (char*)path;
|
||||
}
|
||||
|
||||
return OK;
|
||||
|
||||
ERROR_PROCESS:
|
||||
for (index = 0; index < num; index++) {
|
||||
free(sourceList[index]);
|
||||
sourceList[index] = NULL;
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: ZpfsPrepare
|
||||
* Description:
|
||||
* The main function of mount zpfs.
|
||||
* Input Parameters:
|
||||
* source: The mounted parameter
|
||||
* target: The mount path
|
||||
* inodePtr: the new inode info of target
|
||||
* force: It is true for zpfs
|
||||
* Returned Value:
|
||||
* OK
|
||||
* EINVAL The parameter is wrong.
|
||||
* ENOMEM It is not enough memory.
|
||||
****************************************************************************/
|
||||
int ZpfsPrepare(const char *source, const char *target, struct inode **inodePtr, bool force)
|
||||
{
|
||||
/* Check the mounted folder parameter */
|
||||
int ret = CheckInputParamsFormat(source, target);
|
||||
if (ret != OK) {
|
||||
PRINT_ERR("Parameter is err source:%s target:%s.\n", source, target);
|
||||
return ret;
|
||||
}
|
||||
|
||||
/* The mount target path must be the mounted path */
|
||||
ret = IsTargetMounted(target);
|
||||
if (ret != OK) {
|
||||
PRINT_ERR("Can't to mount to this inode %s\n", target);
|
||||
return ret;
|
||||
}
|
||||
|
||||
ZpfsConfig *zpfsCfg = (ZpfsConfig*) malloc(sizeof(struct ZpfsConfig));
|
||||
if (zpfsCfg == NULL) {
|
||||
PRINT_ERR("Memory is not enought.\n");
|
||||
return -ENOMEM;
|
||||
}
|
||||
(void)memset_s(zpfsCfg, sizeof(struct ZpfsConfig), 0, sizeof(struct ZpfsConfig));
|
||||
|
||||
/* Save the patch global data */
|
||||
ret = SaveZpfsParameter(source, target, zpfsCfg);
|
||||
if (ret != OK) {
|
||||
ZpfsFreeConfig(zpfsCfg);
|
||||
PRINT_ERR("Memory is not enought.\n");
|
||||
return ret;
|
||||
}
|
||||
|
||||
/* Create the patch inode */
|
||||
ret = inode_reserve_rootdir(target, inodePtr, force);
|
||||
if (ret != OK) {
|
||||
ZpfsFreeConfig(zpfsCfg);
|
||||
PRINT_ERR("failed to create mounted inode.\n");
|
||||
return ret;
|
||||
}
|
||||
zpfsCfg->patchInode = *inodePtr;
|
||||
(*inodePtr)->i_private = zpfsCfg;
|
||||
return ret;
|
||||
}
|
||||
|
||||
/****************************************************************************
|
||||
* Name: ZpfsCleanUp
|
||||
* Description:
|
||||
* Clean the configuration of zpfs.
|
||||
* Input Parameters:
|
||||
* target: The mount path
|
||||
* Returned Value:
|
||||
* void
|
||||
****************************************************************************/
|
||||
void ZpfsCleanUp(const void *node, const char *target)
|
||||
{
|
||||
struct statfs buf;
|
||||
struct inode *inode = (struct inode *)node;
|
||||
if ((target == NULL) || (inode == NULL) ||
|
||||
(inode->u.i_mops == NULL) ||
|
||||
(inode->u.i_mops->statfs == NULL)) {
|
||||
return;
|
||||
}
|
||||
if (inode->u.i_mops->statfs(inode, &buf) == OK) {
|
||||
if (buf.f_type == ZPFS_MAGIC) {
|
||||
ZpfsConfig *zpfsCfg = inode->i_private;
|
||||
if (strcmp(zpfsCfg->patchTarget, target) == 0) {
|
||||
ZpfsFreeConfig(zpfsCfg);
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
bool IsZpfsFileSystem(struct inode *inode)
|
||||
{
|
||||
struct statfs buf;
|
||||
if (inode == NULL || inode->u.i_mops == NULL ||
|
||||
inode->u.i_mops->statfs == NULL) {
|
||||
return false;
|
||||
}
|
||||
if (inode->u.i_mops->statfs(inode, &buf) == OK) {
|
||||
if (buf.f_type == ZPFS_MAGIC) {
|
||||
return true;
|
||||
}
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
#endif // LOSCFG_FS_ZPFS
|
||||
Loading…
Reference in New Issue