diff options
Diffstat (limited to 'shared/inotify/inotify-cxx.cpp')
| -rw-r--r-- | shared/inotify/inotify-cxx.cpp | 1020 |
1 files changed, 544 insertions, 476 deletions
diff --git a/shared/inotify/inotify-cxx.cpp b/shared/inotify/inotify-cxx.cpp index 689612ac..5a460ec7 100644 --- a/shared/inotify/inotify-cxx.cpp +++ b/shared/inotify/inotify-cxx.cpp @@ -2,11 +2,11 @@ /// inotify C++ interface implementation /** * \file inotify-cxx.cpp - * + * * inotify C++ interface - * + * * Copyright (C) 2006, 2007, 2009 Lukas Jelinek <lukas@aiken.cz> - * + * * This program is free software; you can redistribute it and/or * modify it under the terms of one of the following licenses: * @@ -19,9 +19,9 @@ * * Credits: * Mike Frysinger (cleanup of includes) - * + * */ - + #include <errno.h> #include <unistd.h> @@ -52,590 +52,658 @@ int32_t InotifyEvent::GetDescriptor() const { - return m_pWatch != NULL // if watch exists - ? m_pWatch->GetDescriptor() // return its descriptor - : -1; // else return -1 + return m_pWatch != NULL // if watch exists + ? m_pWatch->GetDescriptor() // return its descriptor + : -1; // else return -1 } uint32_t InotifyEvent::GetMaskByName(const std::string& rName) { - if (rName == "IN_ACCESS") - return IN_ACCESS; - else if (rName == "IN_MODIFY") - return IN_MODIFY; - else if (rName == "IN_ATTRIB") - return IN_ATTRIB; - else if (rName == "IN_CLOSE_WRITE") - return IN_CLOSE_WRITE; - else if (rName == "IN_CLOSE_NOWRITE") - return IN_CLOSE_NOWRITE; - else if (rName == "IN_OPEN") - return IN_OPEN; - else if (rName == "IN_MOVED_FROM") - return IN_MOVED_FROM; - else if (rName == "IN_MOVED_TO") - return IN_MOVED_TO; - else if (rName == "IN_CREATE") - return IN_CREATE; - else if (rName == "IN_DELETE") - return IN_DELETE; - else if (rName == "IN_DELETE_SELF") - return IN_DELETE_SELF; - else if (rName == "IN_UNMOUNT") - return IN_UNMOUNT; - else if (rName == "IN_Q_OVERFLOW") - return IN_Q_OVERFLOW; - else if (rName == "IN_IGNORED") - return IN_IGNORED; - else if (rName == "IN_CLOSE") - return IN_CLOSE; - else if (rName == "IN_MOVE") - return IN_MOVE; - else if (rName == "IN_ISDIR") - return IN_ISDIR; - else if (rName == "IN_ONESHOT") - return IN_ONESHOT; - else if (rName == "IN_ALL_EVENTS") - return IN_ALL_EVENTS; - + if (rName == "IN_ACCESS") + return IN_ACCESS; + else if (rName == "IN_MODIFY") + return IN_MODIFY; + else if (rName == "IN_ATTRIB") + return IN_ATTRIB; + else if (rName == "IN_CLOSE_WRITE") + return IN_CLOSE_WRITE; + else if (rName == "IN_CLOSE_NOWRITE") + return IN_CLOSE_NOWRITE; + else if (rName == "IN_OPEN") + return IN_OPEN; + else if (rName == "IN_MOVED_FROM") + return IN_MOVED_FROM; + else if (rName == "IN_MOVED_TO") + return IN_MOVED_TO; + else if (rName == "IN_CREATE") + return IN_CREATE; + else if (rName == "IN_DELETE") + return IN_DELETE; + else if (rName == "IN_DELETE_SELF") + return IN_DELETE_SELF; + else if (rName == "IN_UNMOUNT") + return IN_UNMOUNT; + else if (rName == "IN_Q_OVERFLOW") + return IN_Q_OVERFLOW; + else if (rName == "IN_IGNORED") + return IN_IGNORED; + else if (rName == "IN_CLOSE") + return IN_CLOSE; + else if (rName == "IN_MOVE") + return IN_MOVE; + else if (rName == "IN_ISDIR") + return IN_ISDIR; + else if (rName == "IN_ONESHOT") + return IN_ONESHOT; + else if (rName == "IN_ALL_EVENTS") + return IN_ALL_EVENTS; + #ifdef IN_DONT_FOLLOW - else if (rName == "IN_DONT_FOLLOW") - return IN_DONT_FOLLOW; + else if (rName == "IN_DONT_FOLLOW") + return IN_DONT_FOLLOW; #endif // IN_DONT_FOLLOW #ifdef IN_ONLYDIR - else if (rName == "IN_ONLYDIR") - return IN_ONLYDIR; + else if (rName == "IN_ONLYDIR") + return IN_ONLYDIR; #endif // IN_ONLYDIR #ifdef IN_MOVE_SELF - else if (rName == "IN_MOVE_SELF") - return IN_MOVE_SELF; + else if (rName == "IN_MOVE_SELF") + return IN_MOVE_SELF; #endif // IN_MOVE_SELF - - return (uint32_t) 0; + + return (uint32_t) 0; } void InotifyEvent::DumpTypes(uint32_t uValue, std::string& rStr) { - rStr = ""; - - if (IsType(uValue, IN_ALL_EVENTS)) { - rStr.append("IN_ALL_EVENTS"); - } - else { - if (IsType(uValue, IN_ACCESS)) { - DUMP_SEP; - rStr.append("IN_ACCESS"); - } - if (IsType(uValue, IN_MODIFY)) { - DUMP_SEP; - rStr.append("IN_MODIFY"); - } - if (IsType(uValue, IN_ATTRIB)) { - DUMP_SEP; - rStr.append("IN_ATTRIB"); - } - if (IsType(uValue, IN_CREATE)) { - DUMP_SEP; - rStr.append("IN_CREATE"); - } - if (IsType(uValue, IN_DELETE)) { - DUMP_SEP; - rStr.append("IN_DELETE"); - } - if (IsType(uValue, IN_DELETE_SELF)) { - DUMP_SEP; - rStr.append("IN_DELETE_SELF"); - } - if (IsType(uValue, IN_OPEN)) { - DUMP_SEP; - rStr.append("IN_OPEN"); - } - if (IsType(uValue, IN_CLOSE)) { - DUMP_SEP; - rStr.append("IN_CLOSE"); + rStr = ""; + + if (IsType(uValue, IN_ALL_EVENTS)) + { + rStr.append("IN_ALL_EVENTS"); } + else + { + if (IsType(uValue, IN_ACCESS)) + { + DUMP_SEP; + rStr.append("IN_ACCESS"); + } + if (IsType(uValue, IN_MODIFY)) + { + DUMP_SEP; + rStr.append("IN_MODIFY"); + } + if (IsType(uValue, IN_ATTRIB)) + { + DUMP_SEP; + rStr.append("IN_ATTRIB"); + } + if (IsType(uValue, IN_CREATE)) + { + DUMP_SEP; + rStr.append("IN_CREATE"); + } + if (IsType(uValue, IN_DELETE)) + { + DUMP_SEP; + rStr.append("IN_DELETE"); + } + if (IsType(uValue, IN_DELETE_SELF)) + { + DUMP_SEP; + rStr.append("IN_DELETE_SELF"); + } + if (IsType(uValue, IN_OPEN)) + { + DUMP_SEP; + rStr.append("IN_OPEN"); + } + if (IsType(uValue, IN_CLOSE)) + { + DUMP_SEP; + rStr.append("IN_CLOSE"); + } #ifdef IN_MOVE_SELF - if (IsType(uValue, IN_MOVE_SELF)) { - DUMP_SEP; - rStr.append("IN_MOVE_SELF"); - } + if (IsType(uValue, IN_MOVE_SELF)) + { + DUMP_SEP; + rStr.append("IN_MOVE_SELF"); + } #endif // IN_MOVE_SELF - - else { - if (IsType(uValue, IN_CLOSE_WRITE)) { + + else + { + if (IsType(uValue, IN_CLOSE_WRITE)) + { + DUMP_SEP; + rStr.append("IN_CLOSE_WRITE"); + } + if (IsType(uValue, IN_CLOSE_NOWRITE)) + { + DUMP_SEP; + rStr.append("IN_CLOSE_NOWRITE"); + } + } + if (IsType(uValue, IN_MOVE)) + { + DUMP_SEP; + rStr.append("IN_MOVE"); + } + else + { + if (IsType(uValue, IN_MOVED_FROM)) + { + DUMP_SEP; + rStr.append("IN_MOVED_FROM"); + } + if (IsType(uValue, IN_MOVED_TO)) + { + DUMP_SEP; + rStr.append("IN_MOVED_TO"); + } + } + } + if (IsType(uValue, IN_UNMOUNT)) + { DUMP_SEP; - rStr.append("IN_CLOSE_WRITE"); - } - if (IsType(uValue, IN_CLOSE_NOWRITE)) { + rStr.append("IN_UNMOUNT"); + } + if (IsType(uValue, IN_Q_OVERFLOW)) + { DUMP_SEP; - rStr.append("IN_CLOSE_NOWRITE"); - } + rStr.append("IN_Q_OVERFLOW"); } - if (IsType(uValue, IN_MOVE)) { - DUMP_SEP; - rStr.append("IN_MOVE"); + if (IsType(uValue, IN_IGNORED)) + { + DUMP_SEP; + rStr.append("IN_IGNORED"); } - else { - if (IsType(uValue, IN_MOVED_FROM)) { + if (IsType(uValue, IN_ISDIR)) + { DUMP_SEP; - rStr.append("IN_MOVED_FROM"); - } - if (IsType(uValue, IN_MOVED_TO)) { + rStr.append("IN_ISDIR"); + } + if (IsType(uValue, IN_ONESHOT)) + { DUMP_SEP; - rStr.append("IN_MOVED_TO"); - } - } - } - if (IsType(uValue, IN_UNMOUNT)) { - DUMP_SEP; - rStr.append("IN_UNMOUNT"); - } - if (IsType(uValue, IN_Q_OVERFLOW)) { - DUMP_SEP; - rStr.append("IN_Q_OVERFLOW"); - } - if (IsType(uValue, IN_IGNORED)) { - DUMP_SEP; - rStr.append("IN_IGNORED"); - } - if (IsType(uValue, IN_ISDIR)) { - DUMP_SEP; - rStr.append("IN_ISDIR"); - } - if (IsType(uValue, IN_ONESHOT)) { - DUMP_SEP; - rStr.append("IN_ONESHOT"); - } - + rStr.append("IN_ONESHOT"); + } + #ifdef IN_DONT_FOLLOW - if (IsType(uValue, IN_DONT_FOLLOW)) { - DUMP_SEP; - rStr.append("IN_DONT_FOLLOW"); - } + if (IsType(uValue, IN_DONT_FOLLOW)) + { + DUMP_SEP; + rStr.append("IN_DONT_FOLLOW"); + } #endif // IN_DONT_FOLLOW - + #ifdef IN_ONLYDIR - if (IsType(uValue, IN_ONLYDIR)) { - DUMP_SEP; - rStr.append("IN_ONLYDIR"); - } + if (IsType(uValue, IN_ONLYDIR)) + { + DUMP_SEP; + rStr.append("IN_ONLYDIR"); + } #endif // IN_ONLYDIR } void InotifyEvent::DumpTypes(std::string& rStr) const { - DumpTypes(m_uMask, rStr); + DumpTypes(m_uMask, rStr); } void InotifyWatch::SetMask(uint32_t uMask) throw (InotifyException) { - IN_WRITE_BEGIN - - if (m_wd != -1) { - int wd = inotify_add_watch(m_pInotify->GetDescriptor(), m_path.c_str(), uMask); - if (wd != m_wd) { - IN_WRITE_END_NOTHROW - throw InotifyException(IN_EXC_MSG("changing mask failed"), wd == -1 ? errno : EINVAL, this); - } - } - - m_uMask = uMask; - - IN_WRITE_END + IN_WRITE_BEGIN + + if (m_wd != -1) + { + int wd = inotify_add_watch(m_pInotify->GetDescriptor(), m_path.c_str(), uMask); + if (wd != m_wd) + { + IN_WRITE_END_NOTHROW + throw InotifyException(IN_EXC_MSG("changing mask failed"), wd == -1 ? errno : EINVAL, this); + } + } + + m_uMask = uMask; + + IN_WRITE_END } void InotifyWatch::SetEnabled(bool fEnabled) throw (InotifyException) { - IN_WRITE_BEGIN - - if (fEnabled == m_fEnabled) { - IN_WRITE_END_NOTHROW - return; - } - - if (m_pInotify != NULL) { - if (fEnabled) { - m_wd = inotify_add_watch(m_pInotify->GetDescriptor(), m_path.c_str(), m_uMask); - if (m_wd == -1) { + IN_WRITE_BEGIN + + if (fEnabled == m_fEnabled) + { IN_WRITE_END_NOTHROW - throw InotifyException(IN_EXC_MSG("enabling watch failed"), errno, this); - } - m_pInotify->m_watches.insert(IN_WATCH_MAP::value_type(m_wd, this)); + return; } - else { - if (inotify_rm_watch(m_pInotify->GetDescriptor(), m_wd) != 0) { - IN_WRITE_END_NOTHROW - throw InotifyException(IN_EXC_MSG("disabling watch failed"), errno, this); - } - m_pInotify->m_watches.erase(m_wd); - m_wd = -1; - } - } - - m_fEnabled = fEnabled; - - IN_WRITE_END + + if (m_pInotify != NULL) + { + if (fEnabled) + { + m_wd = inotify_add_watch(m_pInotify->GetDescriptor(), m_path.c_str(), m_uMask); + if (m_wd == -1) + { + IN_WRITE_END_NOTHROW + throw InotifyException(IN_EXC_MSG("enabling watch failed"), errno, this); + } + m_pInotify->m_watches.insert(IN_WATCH_MAP::value_type(m_wd, this)); + } + else + { + if (inotify_rm_watch(m_pInotify->GetDescriptor(), m_wd) != 0) + { + IN_WRITE_END_NOTHROW + throw InotifyException(IN_EXC_MSG("disabling watch failed"), errno, this); + } + m_pInotify->m_watches.erase(m_wd); + m_wd = -1; + } + } + + m_fEnabled = fEnabled; + + IN_WRITE_END } void InotifyWatch::__Disable() { - IN_WRITE_BEGIN - - if (!m_fEnabled) { - IN_WRITE_END_NOTHROW - throw InotifyException(IN_EXC_MSG("event cannot occur on disabled watch"), EINVAL, this); - } - - if (m_pInotify != NULL) { - m_pInotify->m_watches.erase(m_wd); - m_wd = -1; - } - - m_fEnabled = false; - - IN_WRITE_END + IN_WRITE_BEGIN + + if (!m_fEnabled) + { + IN_WRITE_END_NOTHROW + throw InotifyException(IN_EXC_MSG("event cannot occur on disabled watch"), EINVAL, this); + } + + if (m_pInotify != NULL) + { + m_pInotify->m_watches.erase(m_wd); + m_wd = -1; + } + + m_fEnabled = false; + + IN_WRITE_END } Inotify::Inotify() throw (InotifyException) { - IN_LOCK_INIT - - m_fd = inotify_init(); - if (m_fd == -1) { - IN_LOCK_DONE - throw InotifyException(IN_EXC_MSG("inotify init failed"), errno, NULL); - } + IN_LOCK_INIT + + m_fd = inotify_init(); + if (m_fd == -1) + { + IN_LOCK_DONE + throw InotifyException(IN_EXC_MSG("inotify init failed"), errno, NULL); + } } - + Inotify::~Inotify() { - Close(); - - IN_LOCK_DONE + Close(); + + IN_LOCK_DONE } void Inotify::Close() { - IN_WRITE_BEGIN - - if (m_fd != -1) { - RemoveAll(); - close(m_fd); - m_fd = -1; - } - - IN_WRITE_END + IN_WRITE_BEGIN + + if (m_fd != -1) + { + RemoveAll(); + close(m_fd); + m_fd = -1; + } + + IN_WRITE_END } void Inotify::Add(InotifyWatch* pWatch) throw (InotifyException) { - IN_WRITE_BEGIN - - // invalid descriptor - this case shouldn't occur - go away - if (m_fd == -1) { - IN_WRITE_END_NOTHROW - throw InotifyException(IN_EXC_MSG("invalid file descriptor"), EBUSY, this); - } - - // this path already watched - go away - if (FindWatch(pWatch->GetPath()) != NULL) { - IN_WRITE_END_NOTHROW - throw InotifyException(IN_EXC_MSG("path already watched"), EBUSY, this); - } - - // for enabled watch - if (pWatch->IsEnabled()) { - - // try to add watch to kernel - int wd = inotify_add_watch(m_fd, pWatch->GetPath().c_str(), pWatch->GetMask()); - - // adding failed - go away - if (wd == -1) { - IN_WRITE_END_NOTHROW - throw InotifyException(IN_EXC_MSG("adding watch failed"), errno, this); - } - - // this path already watched (but defined another way) - InotifyWatch* pW = FindWatch(wd); - if (pW != NULL) { - - // try to recover old watch because it may be modified - then go away - if (inotify_add_watch(m_fd, pW->GetPath().c_str(), pW->GetMask()) < 0) { + IN_WRITE_BEGIN + + // invalid descriptor - this case shouldn't occur - go away + if (m_fd == -1) + { IN_WRITE_END_NOTHROW - throw InotifyException(IN_EXC_MSG("watch collision detected and recovery failed"), errno, this); - } - else { - // recovery failed - go away + throw InotifyException(IN_EXC_MSG("invalid file descriptor"), EBUSY, this); + } + + // this path already watched - go away + if (FindWatch(pWatch->GetPath()) != NULL) + { IN_WRITE_END_NOTHROW - throw InotifyException(IN_EXC_MSG("path already watched (but defined another way)"), EBUSY, this); - } - } - - pWatch->m_wd = wd; - m_watches.insert(IN_WATCH_MAP::value_type(pWatch->m_wd, pWatch)); - } - - m_paths.insert(IN_WP_MAP::value_type(pWatch->m_path, pWatch)); - pWatch->m_pInotify = this; - - IN_WRITE_END + throw InotifyException(IN_EXC_MSG("path already watched"), EBUSY, this); + } + + // for enabled watch + if (pWatch->IsEnabled()) + { + + // try to add watch to kernel + int wd = inotify_add_watch(m_fd, pWatch->GetPath().c_str(), pWatch->GetMask()); + + // adding failed - go away + if (wd == -1) + { + IN_WRITE_END_NOTHROW + throw InotifyException(IN_EXC_MSG("adding watch failed"), errno, this); + } + + // this path already watched (but defined another way) + InotifyWatch* pW = FindWatch(wd); + if (pW != NULL) + { + + // try to recover old watch because it may be modified - then go away + if (inotify_add_watch(m_fd, pW->GetPath().c_str(), pW->GetMask()) < 0) + { + IN_WRITE_END_NOTHROW + throw InotifyException(IN_EXC_MSG("watch collision detected and recovery failed"), errno, this); + } + else + { + // recovery failed - go away + IN_WRITE_END_NOTHROW + throw InotifyException(IN_EXC_MSG("path already watched (but defined another way)"), EBUSY, this); + } + } + + pWatch->m_wd = wd; + m_watches.insert(IN_WATCH_MAP::value_type(pWatch->m_wd, pWatch)); + } + + m_paths.insert(IN_WP_MAP::value_type(pWatch->m_path, pWatch)); + pWatch->m_pInotify = this; + + IN_WRITE_END } void Inotify::Remove(InotifyWatch* pWatch) throw (InotifyException) { - IN_WRITE_BEGIN - - // invalid descriptor - this case shouldn't occur - go away - if (m_fd == -1) { - IN_WRITE_END_NOTHROW - throw InotifyException(IN_EXC_MSG("invalid file descriptor"), EBUSY, this); - } - - // for enabled watch - if (pWatch->m_wd != -1) { - - // removing watch failed - go away - if (inotify_rm_watch(m_fd, pWatch->m_wd) == -1) { - IN_WRITE_END_NOTHROW - throw InotifyException(IN_EXC_MSG("removing watch failed"), errno, this); - } - m_watches.erase(pWatch->m_wd); - pWatch->m_wd = -1; - } - - m_paths.erase(pWatch->m_path); - pWatch->m_pInotify = NULL; - - IN_WRITE_END + IN_WRITE_BEGIN + + // invalid descriptor - this case shouldn't occur - go away + if (m_fd == -1) + { + IN_WRITE_END_NOTHROW + throw InotifyException(IN_EXC_MSG("invalid file descriptor"), EBUSY, this); + } + + // for enabled watch + if (pWatch->m_wd != -1) + { + + // removing watch failed - go away + if (inotify_rm_watch(m_fd, pWatch->m_wd) == -1) + { + IN_WRITE_END_NOTHROW + throw InotifyException(IN_EXC_MSG("removing watch failed"), errno, this); + } + m_watches.erase(pWatch->m_wd); + pWatch->m_wd = -1; + } + + m_paths.erase(pWatch->m_path); + pWatch->m_pInotify = NULL; + + IN_WRITE_END } void Inotify::RemoveAll() { - IN_WRITE_BEGIN - - IN_WP_MAP::iterator it = m_paths.begin(); - while (it != m_paths.end()) { - InotifyWatch* pW = (*it).second; - if (pW->m_wd != -1) { - inotify_rm_watch(m_fd, pW->m_wd); - pW->m_wd = -1; - } - pW->m_pInotify = NULL; - it++; - } - - m_watches.clear(); - m_paths.clear(); - - IN_WRITE_END + IN_WRITE_BEGIN + + IN_WP_MAP::iterator it = m_paths.begin(); + while (it != m_paths.end()) + { + InotifyWatch* pW = (*it).second; + if (pW->m_wd != -1) + { + inotify_rm_watch(m_fd, pW->m_wd); + pW->m_wd = -1; + } + pW->m_pInotify = NULL; + it++; + } + + m_watches.clear(); + m_paths.clear(); + + IN_WRITE_END } void Inotify::WaitForEvents(bool fNoIntr) throw (InotifyException) { - ssize_t len = 0; - - do { - len = read(m_fd, m_buf, INOTIFY_BUFLEN); - } while (fNoIntr && len == -1 && errno == EINTR); - - if (len == -1 && !(errno == EWOULDBLOCK || errno == EINTR)) - throw InotifyException(IN_EXC_MSG("reading events failed"), errno, this); - - if (len == -1) - return; - - IN_WRITE_BEGIN - - ssize_t i = 0; - while (i < len) { - struct inotify_event* pEvt = (struct inotify_event*) &m_buf[i]; - InotifyWatch* pW = FindWatch(pEvt->wd); - if (pW != NULL) { - InotifyEvent evt(pEvt, pW); - if ( InotifyEvent::IsType(pW->GetMask(), IN_ONESHOT) - || InotifyEvent::IsType(evt.GetMask(), IN_IGNORED)) - pW->__Disable(); - m_events.push_back(evt); - } - i += INOTIFY_EVENT_SIZE + (ssize_t) pEvt->len; - } - - IN_WRITE_END + ssize_t len = 0; + + do + { + len = read(m_fd, m_buf, INOTIFY_BUFLEN); + } + while (fNoIntr && len == -1 && errno == EINTR); + + if (len == -1 && !(errno == EWOULDBLOCK || errno == EINTR)) + throw InotifyException(IN_EXC_MSG("reading events failed"), errno, this); + + if (len == -1) + return; + + IN_WRITE_BEGIN + + ssize_t i = 0; + while (i < len) + { + struct inotify_event* pEvt = (struct inotify_event*) &m_buf[i]; + InotifyWatch* pW = FindWatch(pEvt->wd); + if (pW != NULL) + { + InotifyEvent evt(pEvt, pW); + if ( InotifyEvent::IsType(pW->GetMask(), IN_ONESHOT) + || InotifyEvent::IsType(evt.GetMask(), IN_IGNORED)) + pW->__Disable(); + m_events.push_back(evt); + } + i += INOTIFY_EVENT_SIZE + (ssize_t) pEvt->len; + } + + IN_WRITE_END } - + bool Inotify::GetEvent(InotifyEvent* pEvt) throw (InotifyException) { - if (pEvt == NULL) - throw InotifyException(IN_EXC_MSG("null pointer to event"), EINVAL, this); - - IN_WRITE_BEGIN - - bool b = !m_events.empty(); - if (b) { - *pEvt = m_events.front(); - m_events.pop_front(); - } - - IN_WRITE_END - - return b; + if (pEvt == NULL) + throw InotifyException(IN_EXC_MSG("null pointer to event"), EINVAL, this); + + IN_WRITE_BEGIN + + bool b = !m_events.empty(); + if (b) + { + *pEvt = m_events.front(); + m_events.pop_front(); + } + + IN_WRITE_END + + return b; } - + bool Inotify::PeekEvent(InotifyEvent* pEvt) throw (InotifyException) { - if (pEvt == NULL) - throw InotifyException(IN_EXC_MSG("null pointer to event"), EINVAL, this); - - IN_READ_BEGIN - - bool b = !m_events.empty(); - if (b) { - *pEvt = m_events.front(); - } - - IN_READ_END - - return b; + if (pEvt == NULL) + throw InotifyException(IN_EXC_MSG("null pointer to event"), EINVAL, this); + + IN_READ_BEGIN + + bool b = !m_events.empty(); + if (b) + { + *pEvt = m_events.front(); + } + + IN_READ_END + + return b; } InotifyWatch* Inotify::FindWatch(int iDescriptor) { - IN_READ_BEGIN - - IN_WATCH_MAP::iterator it = m_watches.find(iDescriptor); - InotifyWatch* pW = it == m_watches.end() ? NULL : (*it).second; - - IN_READ_END - - return pW; + IN_READ_BEGIN + + IN_WATCH_MAP::iterator it = m_watches.find(iDescriptor); + InotifyWatch* pW = it == m_watches.end() ? NULL : (*it).second; + + IN_READ_END + + return pW; } InotifyWatch* Inotify::FindWatch(const std::string& rPath) { - IN_READ_BEGIN - - IN_WP_MAP::iterator it = m_paths.find(rPath); - InotifyWatch* pW = it == m_paths.end() ? NULL : (*it).second; - - IN_READ_END - - return pW; + IN_READ_BEGIN + + IN_WP_MAP::iterator it = m_paths.find(rPath); + InotifyWatch* pW = it == m_paths.end() ? NULL : (*it).second; + + IN_READ_END + + return pW; } - + void Inotify::SetNonBlock(bool fNonBlock) throw (InotifyException) { - IN_WRITE_BEGIN - - if (m_fd == -1) { - IN_WRITE_END_NOTHROW - throw InotifyException(IN_EXC_MSG("invalid file descriptor"), EBUSY, this); - } - - int res = fcntl(m_fd, F_GETFL); - if (res == -1) { - IN_WRITE_END_NOTHROW - throw InotifyException(IN_EXC_MSG("cannot get inotify flags"), errno, this); - } - - if (fNonBlock) { - res |= O_NONBLOCK; - } - else { - res &= ~O_NONBLOCK; - } - - if (fcntl(m_fd, F_SETFL, res) == -1) { - IN_WRITE_END_NOTHROW - throw InotifyException(IN_EXC_MSG("cannot set inotify flags"), errno, this); - } - - IN_WRITE_END + IN_WRITE_BEGIN + + if (m_fd == -1) + { + IN_WRITE_END_NOTHROW + throw InotifyException(IN_EXC_MSG("invalid file descriptor"), EBUSY, this); + } + + int res = fcntl(m_fd, F_GETFL); + if (res == -1) + { + IN_WRITE_END_NOTHROW + throw InotifyException(IN_EXC_MSG("cannot get inotify flags"), errno, this); + } + + if (fNonBlock) + { + res |= O_NONBLOCK; + } + else + { + res &= ~O_NONBLOCK; + } + + if (fcntl(m_fd, F_SETFL, res) == -1) + { + IN_WRITE_END_NOTHROW + throw InotifyException(IN_EXC_MSG("cannot set inotify flags"), errno, this); + } + + IN_WRITE_END } void Inotify::SetCloseOnExec(bool fClOnEx) throw (InotifyException) { - IN_WRITE_BEGIN - - if (m_fd == -1) { - IN_WRITE_END_NOTHROW - throw InotifyException(IN_EXC_MSG("invalid file descriptor"), EBUSY, this); - } - - int res = fcntl(m_fd, F_GETFD); - if (res == -1) { - IN_WRITE_END_NOTHROW - throw InotifyException(IN_EXC_MSG("cannot get inotify flags"), errno, this); - } - - if (fClOnEx) { - res |= FD_CLOEXEC; - } - else { - res &= ~FD_CLOEXEC; - } - - if (fcntl(m_fd, F_SETFD, res) == -1) { - IN_WRITE_END_NOTHROW - throw InotifyException(IN_EXC_MSG("cannot set inotify flags"), errno, this); - } - - IN_WRITE_END + IN_WRITE_BEGIN + + if (m_fd == -1) + { + IN_WRITE_END_NOTHROW + throw InotifyException(IN_EXC_MSG("invalid file descriptor"), EBUSY, this); + } + + int res = fcntl(m_fd, F_GETFD); + if (res == -1) + { + IN_WRITE_END_NOTHROW + throw InotifyException(IN_EXC_MSG("cannot get inotify flags"), errno, this); + } + + if (fClOnEx) + { + res |= FD_CLOEXEC; + } + else + { + res &= ~FD_CLOEXEC; + } + + if (fcntl(m_fd, F_SETFD, res) == -1) + { + IN_WRITE_END_NOTHROW + throw InotifyException(IN_EXC_MSG("cannot set inotify flags"), errno, this); + } + + IN_WRITE_END } uint32_t Inotify::GetCapability(InotifyCapability_t cap) throw (InotifyException) { - FILE* f = fopen(GetCapabilityPath(cap).c_str(), "r"); - if (f == NULL) - throw InotifyException(IN_EXC_MSG("cannot get capability"), errno, NULL); - - unsigned int val = 0; - if (fscanf(f, "%u", &val) != 1) { + FILE* f = fopen(GetCapabilityPath(cap).c_str(), "r"); + if (f == NULL) + throw InotifyException(IN_EXC_MSG("cannot get capability"), errno, NULL); + + unsigned int val = 0; + if (fscanf(f, "%u", &val) != 1) + { + fclose(f); + throw InotifyException(IN_EXC_MSG("cannot get capability"), EIO, NULL); + } + fclose(f); - throw InotifyException(IN_EXC_MSG("cannot get capability"), EIO, NULL); - } - - fclose(f); - - return (uint32_t) val; + + return (uint32_t) val; } void Inotify::SetCapability(InotifyCapability_t cap, uint32_t val) throw (InotifyException) { - FILE* f = fopen(GetCapabilityPath(cap).c_str(), "w"); - if (f == NULL) - throw InotifyException(IN_EXC_MSG("cannot set capability"), errno, NULL); - - if (fprintf(f, "%u", (unsigned int) val) <= 0) { + FILE* f = fopen(GetCapabilityPath(cap).c_str(), "w"); + if (f == NULL) + throw InotifyException(IN_EXC_MSG("cannot set capability"), errno, NULL); + + if (fprintf(f, "%u", (unsigned int) val) <= 0) + { + fclose(f); + throw InotifyException(IN_EXC_MSG("cannot set capability"), EIO, NULL); + } + fclose(f); - throw InotifyException(IN_EXC_MSG("cannot set capability"), EIO, NULL); - } - - fclose(f); } std::string Inotify::GetCapabilityPath(InotifyCapability_t cap) throw (InotifyException) { - std::string path(PROCFS_INOTIFY_BASE); - - switch (cap) { - case IN_MAX_EVENTS: - path.append("max_queued_events"); - break; - case IN_MAX_INSTANCES: - path.append("max_user_instances"); - break; - case IN_MAX_WATCHES: - path.append("max_user_watches"); - break; - default: - throw InotifyException(IN_EXC_MSG("unknown capability type"), EINVAL, NULL); - } - - return path; + std::string path(PROCFS_INOTIFY_BASE); + + switch (cap) + { + case IN_MAX_EVENTS: + path.append("max_queued_events"); + break; + case IN_MAX_INSTANCES: + path.append("max_user_instances"); + break; + case IN_MAX_WATCHES: + path.append("max_user_watches"); + break; + default: + throw InotifyException(IN_EXC_MSG("unknown capability type"), EINVAL, NULL); + } + + return path; } |