| #pragma once |
| |
| #include <map> |
| #include <memory> |
| #include <systemd/sd-event.h> |
| #include <unistd.h> |
| |
| namespace phosphor |
| { |
| namespace dump |
| { |
| |
| /** @struct CustomFd |
| * |
| * RAII wrapper for file descriptor. |
| */ |
| struct CustomFd |
| { |
| private: |
| /** @brief File descriptor */ |
| int fd = -1; |
| |
| public: |
| CustomFd(const CustomFd&) = delete; |
| CustomFd& operator=(const CustomFd&) = delete; |
| CustomFd(CustomFd&&) = delete; |
| CustomFd& operator=(CustomFd&&) = delete; |
| |
| /** @brief Saves File descriptor and uses it to do file operation |
| * |
| * @param[in] fd - File descriptor |
| */ |
| CustomFd(int fd) : fd(fd) {} |
| |
| ~CustomFd(); |
| |
| int operator()() const |
| { |
| return fd; |
| } |
| }; |
| |
| namespace inotify |
| { |
| /** @class Watch |
| * |
| * @brief Adds inotify watch on core file directories. |
| * |
| * The inotify watch is hooked up with sd-event, so that on call back, |
| * appropriate actions are taken to collect the core files. |
| */ |
| class Watch |
| { |
| public: |
| /** @brief ctor - hook inotify watch with sd-event |
| * |
| * @param[in] loop - sd-event object |
| */ |
| Watch(sd_event* loop); |
| |
| Watch(const Watch&) = delete; |
| Watch& operator=(const Watch&) = delete; |
| Watch(Watch&&) = default; |
| Watch& operator=(Watch&&) = default; |
| |
| /* @brief dtor - remove inotify watch and close fd's */ |
| ~Watch(); |
| |
| private: |
| /** @brief sd-event callback |
| * |
| * @param[in] s - event source, floating (unused) in our case |
| * @param[in] fd - inotify fd |
| * @param[in] revents - events that matched for fd |
| * @param[in] userdata - pointer to Watch object |
| * @returns 0 on success, -1 on fail |
| */ |
| static int callback(sd_event_source* s, |
| int fd, |
| uint32_t revents, |
| void* userdata); |
| |
| /** initialize an inotify instance and returns file descriptor */ |
| int inotifyInit(); |
| |
| /** @brief core file directory watch descriptor */ |
| int wd = -1; |
| |
| /** @brief file descriptor manager */ |
| CustomFd fd; |
| }; |
| |
| } // namespace inotify |
| } // namespace dump |
| } // namespace phosphor |