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| Rev | Author | Line No. | Line |
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| 3 | luk | 1 | |
| 2 | /// inotify C++ interface implementation |
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| 3 | /** |
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| 4 | * \file inotify-cxx.cpp |
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| 5 | * |
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| 6 | * inotify C++ interface |
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| 7 | * |
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| 8 | * Copyright (C) 2006 Lukas Jelinek <lukas@aiken.cz> |
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| 9 | * |
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| 10 | * This program is free software; you can redistribute it and/or |
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| 11 | * modify it under the terms of one of the following licenses: |
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| 12 | * |
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| 13 | * \li 1. X11-style license (see LICENSE-X11) |
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| 14 | * \li 2. GNU Lesser General Public License, version 2.1 (see LICENSE-LGPL) |
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| 15 | * \li 3. GNU General Public License, version 2 (see LICENSE-GPL) |
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| 16 | * |
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| 17 | * If you want to help with choosing the best license for you, |
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| 18 | * please visit http://www.gnu.org/licenses/license-list.html. |
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| 19 | * |
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| 20 | */ |
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| 21 | |||
| 22 | |||
| 23 | #include <errno.h> |
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| 24 | #include <unistd.h> |
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| 25 | |||
| 26 | #include "inotify-cxx.h" |
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| 27 | |||
| 28 | #define DUMP_SEP \ |
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| 29 | ({ \ |
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| 30 | if (!rStr.empty()) { \ |
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| 31 | rStr.append(" "); \ |
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| 32 | } \ |
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| 33 | }) |
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| 34 | |||
| 35 | |||
| 36 | void InotifyEvent::DumpTypes(std::string& rStr) const |
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| 37 | { |
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| 38 | rStr = ""; |
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| 39 | |||
| 40 | if (IsType(IN_ACCESS)) { |
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| 41 | rStr.append("IN_ACCESS"); |
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| 42 | } |
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| 43 | if (IsType(IN_MODIFY)) { |
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| 44 | DUMP_SEP; |
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| 45 | rStr.append("IN_MODIFY"); |
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| 46 | } |
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| 47 | if (IsType(IN_ATTRIB)) { |
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| 48 | DUMP_SEP; |
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| 49 | rStr.append("IN_ATTRIB"); |
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| 50 | } |
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| 51 | if (IsType(IN_CLOSE_WRITE)) { |
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| 52 | DUMP_SEP; |
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| 53 | rStr.append("IN_CLOSE_WRITE"); |
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| 54 | } |
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| 55 | if (IsType(IN_CLOSE_NOWRITE)) { |
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| 56 | DUMP_SEP; |
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| 57 | rStr.append("IN_CLOSE_NOWRITE"); |
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| 58 | } |
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| 59 | if (IsType(IN_OPEN)) { |
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| 60 | DUMP_SEP; |
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| 61 | rStr.append("IN_OPEN"); |
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| 62 | } |
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| 63 | if (IsType(IN_MOVED_FROM)) { |
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| 64 | DUMP_SEP; |
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| 65 | rStr.append("IN_MOVED_FROM"); |
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| 66 | } |
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| 67 | if (IsType(IN_MOVED_TO)) { |
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| 68 | DUMP_SEP; |
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| 69 | rStr.append("IN_MOVED_TO"); |
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| 70 | } |
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| 71 | if (IsType(IN_CREATE)) { |
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| 72 | DUMP_SEP; |
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| 73 | rStr.append("IN_CREATE"); |
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| 74 | } |
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| 75 | if (IsType(IN_DELETE)) { |
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| 76 | DUMP_SEP; |
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| 77 | rStr.append("IN_DELETE"); |
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| 78 | } |
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| 79 | if (IsType(IN_DELETE_SELF)) { |
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| 80 | DUMP_SEP; |
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| 81 | rStr.append("IN_DELETE_SELF"); |
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| 82 | } |
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| 83 | if (IsType(IN_UNMOUNT)) { |
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| 84 | DUMP_SEP; |
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| 85 | rStr.append("IN_UNMOUNT"); |
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| 86 | } |
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| 87 | if (IsType(IN_Q_OVERFLOW)) { |
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| 88 | DUMP_SEP; |
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| 89 | rStr.append("IN_Q_OVERFLOW"); |
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| 90 | } |
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| 91 | if (IsType(IN_IGNORED)) { |
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| 92 | DUMP_SEP; |
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| 93 | rStr.append("IN_IGNORED"); |
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| 94 | } |
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| 95 | if (IsType(IN_CLOSE)) { |
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| 96 | DUMP_SEP; |
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| 97 | rStr.append("IN_CLOSE"); |
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| 98 | } |
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| 99 | if (IsType(IN_MOVE)) { |
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| 100 | DUMP_SEP; |
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| 101 | rStr.append("IN_MOVE"); |
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| 102 | } |
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| 103 | if (IsType(IN_ISDIR)) { |
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| 104 | DUMP_SEP; |
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| 105 | rStr.append("IN_ISDIR"); |
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| 106 | } |
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| 107 | if (IsType(IN_ONESHOT)) { |
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| 108 | DUMP_SEP; |
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| 109 | rStr.append("IN_ONESHOT"); |
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| 110 | } |
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| 111 | } |
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| 112 | |||
| 113 | |||
| 114 | Inotify::Inotify() |
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| 115 | { |
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| 116 | m_fd = inotify_init(); |
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| 117 | } |
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| 118 | |||
| 119 | Inotify::~Inotify() |
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| 120 | { |
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| 121 | Close(); |
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| 122 | } |
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| 123 | |||
| 124 | void Inotify::Close() |
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| 125 | { |
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| 126 | if (m_fd != -1) { |
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| 127 | RemoveAll(); |
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| 128 | close(m_fd); |
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| 129 | m_fd = -1; |
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| 130 | } |
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| 131 | } |
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| 132 | |||
| 133 | bool Inotify::Add(InotifyWatch* pWatch) |
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| 134 | { |
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| 135 | if (m_fd == -1) |
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| 136 | return false; |
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| 137 | |||
| 138 | pWatch->m_wd = inotify_add_watch(m_fd, pWatch->GetPath().c_str(), pWatch->GetMask()); |
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| 139 | if (pWatch->m_wd != -1) { |
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| 140 | m_watches.insert(IN_WATCH_MAP::value_type(pWatch->m_wd, pWatch)); |
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| 141 | return true; |
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| 142 | } |
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| 143 | |||
| 144 | return false; |
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| 145 | } |
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| 146 | |||
| 147 | void Inotify::Remove(InotifyWatch* pWatch) |
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| 148 | { |
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| 149 | if (m_fd == -1) |
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| 150 | return; |
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| 151 | |||
| 152 | if (inotify_rm_watch(m_fd, pWatch->GetMask()) != -1) { |
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| 153 | m_watches.erase(pWatch->m_wd); |
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| 154 | pWatch->m_wd = -1; |
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| 155 | } |
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| 156 | } |
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| 157 | |||
| 158 | void Inotify::RemoveAll() |
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| 159 | { |
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| 160 | IN_WATCH_MAP::iterator it = m_watches.begin(); |
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| 161 | while (it != m_watches.end()) { |
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| 162 | inotify_rm_watch(m_fd, (*it).second->GetMask()); |
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| 163 | it++; |
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| 164 | } |
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| 165 | |||
| 166 | m_watches.clear(); |
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| 167 | } |
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| 168 | |||
| 169 | bool Inotify::WaitForEvents(bool fNoIntr) |
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| 170 | { |
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| 171 | ssize_t len = 0; |
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| 172 | |||
| 173 | do { |
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| 174 | len = read(m_fd, m_buf, INOTIFY_BUFLEN); |
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| 175 | } while (fNoIntr && len == -1 && errno == EINTR); |
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| 176 | |||
| 177 | if (len <= 0) { |
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| 178 | return false; |
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| 179 | } |
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| 180 | |||
| 181 | ssize_t i = 0; |
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| 182 | while (i < len) { |
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| 183 | InotifyEvent evt((struct inotify_event *) &m_buf[i]); |
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| 184 | m_events.push_back(evt); |
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| 185 | i += INOTIFY_EVENT_SIZE + (int) evt.GetLength(); |
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| 186 | } |
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| 187 | |||
| 188 | return true; |
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| 189 | } |
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| 190 | |||
| 191 | int Inotify::GetEventCount() |
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| 192 | { |
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| 193 | return m_events.size(); |
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| 194 | } |
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| 195 | |||
| 196 | bool Inotify::GetEvent(InotifyEvent* pEvt) |
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| 197 | { |
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| 198 | bool b = PeekEvent(pEvt); |
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| 199 | if (b) |
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| 200 | m_events.pop_front(); |
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| 201 | return b; |
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| 202 | } |
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| 203 | |||
| 204 | bool Inotify::PeekEvent(InotifyEvent* pEvt) |
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| 205 | { |
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| 206 | if (pEvt == NULL || m_events.empty()) |
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| 207 | return false; |
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| 208 | |||
| 209 | *pEvt = m_events.front(); |
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| 210 | |||
| 211 | return true; |
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| 212 | } |
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| 213 | |||
| 214 | InotifyWatch* Inotify::FindWatch(int iDescriptor) |
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| 215 | { |
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| 216 | IN_WATCH_MAP::iterator it = m_watches.find(iDescriptor); |
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| 217 | if (it == m_watches.end()) |
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| 218 | return NULL; |
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| 219 | |||
| 220 | return (*it).second; |
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| 221 | } |
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| 222 |