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96 lines
3.1 KiB
96 lines
3.1 KiB
4 months ago
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/*
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* Copyright (c) 2015, The Linux Foundation. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification, are permitted
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* provided that the following conditions are met:
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* * 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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* * Redistributions in binary form must reproduce the above copyright notice, this list of
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* conditions and the following disclaimer in the documentation and/or other materials provided
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* with the distribution.
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* * Neither the name of The Linux Foundation nor the names of its contributors may be used to
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* 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 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, 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, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef __SYS_H__
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#define __SYS_H__
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#include <sys/eventfd.h>
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#include <dlfcn.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <poll.h>
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#include <pthread.h>
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#include <fstream>
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#ifdef SDM_VIRTUAL_DRIVER
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#include <virtual_driver.h>
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#endif
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namespace sdm {
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class Sys {
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public:
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#ifndef SDM_VIRTUAL_DRIVER
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typedef std::fstream fstream;
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#else
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typedef VirtualFStream fstream;
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#endif
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// Pointers to system calls which are either mapped to actual system call or virtual driver.
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typedef int (*ioctl)(int, int, ...);
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typedef int (*open)(const char *, int, ...);
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typedef int (*close)(int);
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typedef int (*poll)(struct pollfd *, nfds_t, int);
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typedef ssize_t (*pread)(int, void *, size_t, off_t);
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typedef ssize_t (*pwrite)(int, const void *, size_t, off_t);
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typedef int (*pthread_cancel)(pthread_t thread);
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typedef int (*dup)(int fd);
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typedef ssize_t (*read)(int, void *, size_t);
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typedef ssize_t (*write)(int, const void *, size_t);
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typedef int (*eventfd)(unsigned int, int);
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static bool getline_(fstream &fs, std::string &line); // NOLINT
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static ioctl ioctl_;
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static open open_;
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static close close_;
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static poll poll_;
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static pread pread_;
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static pwrite pwrite_;
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static pthread_cancel pthread_cancel_;
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static dup dup_;
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static read read_;
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static write write_;
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static eventfd eventfd_;
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};
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class DynLib {
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public:
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~DynLib();
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bool Open(const char *lib_name);
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bool Sym(const char *func_name, void **func_ptr);
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const char * Error() { return ::dlerror(); }
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operator bool() const { return lib_ != NULL; }
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private:
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void Close();
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void *lib_ = NULL;
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};
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} // namespace sdm
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#endif // __SYS_H__
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