160 lines
4.1 KiB
C++
160 lines
4.1 KiB
C++
/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#if defined (TARGET_INJECT_FAULTS)
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#include <map>
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#endif
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#include <errno.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <sys/stat.h>
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#include <unistd.h>
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#include "ota_io.h"
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#if defined (TARGET_INJECT_FAULTS)
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static std::map<int, const char*> FilenameCache;
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static std::string FaultFileName =
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#if defined (TARGET_READ_FAULT)
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TARGET_READ_FAULT;
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#elif defined (TARGET_WRITE_FAULT)
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TARGET_WRITE_FAULT;
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#elif defined (TARGET_FSYNC_FAULT)
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TARGET_FSYNC_FAULT;
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#endif // defined (TARGET_READ_FAULT)
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#endif // defined (TARGET_INJECT_FAULTS)
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int ota_open(const char* path, int oflags) {
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#if defined (TARGET_INJECT_FAULTS)
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// Let the caller handle errors; we do not care if open succeeds or fails
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int fd = open(path, oflags);
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FilenameCache[fd] = path;
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return fd;
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#else
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return open(path, oflags);
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#endif
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}
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int ota_open(const char* path, int oflags, mode_t mode) {
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#if defined (TARGET_INJECT_FAULTS)
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int fd = open(path, oflags, mode);
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FilenameCache[fd] = path;
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return fd;
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#else
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return open(path, oflags, mode);
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#endif
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}
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FILE* ota_fopen(const char* path, const char* mode) {
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#if defined (TARGET_INJECT_FAULTS)
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FILE* fh = fopen(path, mode);
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FilenameCache[(intptr_t)fh] = path;
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return fh;
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#else
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return fopen(path, mode);
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#endif
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}
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int ota_close(int fd) {
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#if defined (TARGET_INJECT_FAULTS)
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// descriptors can be reused, so make sure not to leave them in the cahce
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FilenameCache.erase(fd);
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#endif
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return close(fd);
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}
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int ota_fclose(FILE* fh) {
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#if defined (TARGET_INJECT_FAULTS)
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FilenameCache.erase((intptr_t)fh);
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#endif
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return fclose(fh);
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}
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size_t ota_fread(void* ptr, size_t size, size_t nitems, FILE* stream) {
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#if defined (TARGET_READ_FAULT)
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if (FilenameCache.find((intptr_t)stream) != FilenameCache.end()
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&& FilenameCache[(intptr_t)stream] == FaultFileName) {
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FaultFileName = "";
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errno = EIO;
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return 0;
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} else {
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return fread(ptr, size, nitems, stream);
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}
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#else
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return fread(ptr, size, nitems, stream);
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#endif
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}
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ssize_t ota_read(int fd, void* buf, size_t nbyte) {
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#if defined (TARGET_READ_FAULT)
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if (FilenameCache.find(fd) != FilenameCache.end()
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&& FilenameCache[fd] == FaultFileName) {
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FaultFileName = "";
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errno = EIO;
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return -1;
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} else {
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return read(fd, buf, nbyte);
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}
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#else
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return read(fd, buf, nbyte);
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#endif
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}
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size_t ota_fwrite(const void* ptr, size_t size, size_t count, FILE* stream) {
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#if defined (TARGET_WRITE_FAULT)
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if (FilenameCache.find((intptr_t)stream) != FilenameCache.end()
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&& FilenameCache[(intptr_t)stream] == FaultFileName) {
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FaultFileName = "";
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errno = EIO;
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return 0;
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} else {
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return fwrite(ptr, size, count, stream);
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}
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#else
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return fwrite(ptr, size, count, stream);
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#endif
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}
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ssize_t ota_write(int fd, const void* buf, size_t nbyte) {
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#if defined (TARGET_WRITE_FAULT)
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if (FilenameCache.find(fd) != FilenameCache.end()
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&& FilenameCache[fd] == FaultFileName) {
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FaultFileName = "";
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errno = EIO;
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return -1;
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} else {
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return write(fd, buf, nbyte);
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}
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#else
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return write(fd, buf, nbyte);
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#endif
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}
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int ota_fsync(int fd) {
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#if defined (TARGET_FSYNC_FAULT)
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if (FilenameCache.find(fd) != FilenameCache.end()
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&& FilenameCache[fd] == FaultFileName) {
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FaultFileName = "";
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errno = EIO;
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return -1;
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} else {
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return fsync(fd);
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}
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#else
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return fsync(fd);
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#endif
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}
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