1/*
2* Copyright (c) 2015, The Linux Foundation. All rights reserved.
3*
4* Redistribution and use in source and binary forms, with or without
5* modification, are permitted provided that the following conditions are
6* met:
7*     * Redistributions of source code must retain the above copyright
8*       notice, this list of conditions and the following disclaimer.
9*     * Redistributions in binary form must reproduce the above
10*       copyright notice, this list of conditions and the following
11*       disclaimer in the documentation and/or other materials provided
12*       with the distribution.
13*     * Neither the name of The Linux Foundation nor the names of its
14*       contributors may be used to endorse or promote products derived
15*       from this software without specific prior written permission.
16*
17* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
18* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
19* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
20* ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS
21* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
22* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
23* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
24* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
25* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
26* OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
27* IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
28*/
29
30#include <utils/sys.h>
31#include <sys/ioctl.h>
32#include <fcntl.h>
33#include <unistd.h>
34#include <string>
35
36#define __CLASS__ "Sys"
37
38namespace sdm {
39
40#ifndef SDM_VIRTUAL_DRIVER
41
42int PthreadCancel(pthread_t /* thread */) {
43  return 0;
44}
45
46// Pointer to actual driver interfaces.
47Sys::ioctl Sys::ioctl_ = ::ioctl;
48Sys::access Sys::access_ = ::access;
49Sys::open Sys::open_ = ::open;
50Sys::close Sys::close_ = ::close;
51Sys::poll Sys::poll_ = ::poll;
52Sys::pread Sys::pread_ = ::pread;
53Sys::pwrite Sys::pwrite_ = ::pwrite;
54Sys::pthread_cancel Sys::pthread_cancel_ = PthreadCancel;
55Sys::dup Sys::dup_ = ::dup;
56Sys::read Sys::read_ = ::read;
57Sys::write Sys::write_ = ::write;
58Sys::eventfd Sys::eventfd_ = ::eventfd;
59
60bool Sys::getline_(fstream &fs, std::string &line) {
61  return std::getline(fs, line) ? true : false;
62}
63
64#endif  // SDM_VIRTUAL_DRIVER
65
66DynLib::~DynLib() {
67  Close();
68}
69
70bool DynLib::Open(const char *lib_name) {
71  Close();
72  lib_ = ::dlopen(lib_name, RTLD_NOW);
73
74  return (lib_ != NULL);
75}
76
77bool DynLib::Sym(const char *func_name, void **func_ptr) {
78  if (lib_) {
79    *func_ptr = ::dlsym(lib_, func_name);
80  } else {
81    *func_ptr = NULL;
82  }
83
84  return (*func_ptr != NULL);
85}
86
87void DynLib::Close() {
88  if (lib_) {
89    ::dlclose(lib_);
90    lib_ = NULL;
91  }
92}
93
94}  // namespace sdm
95
96