/* EIO - EFL data type library * Copyright (C) 2011 Enlightenment Developers: * Cedric Bail * * This library is free software; you can redistribute it and/or * modify it under the terms of the GNU Lesser General Public * License as published by the Free Software Foundation; either * version 2.1 of the License, or (at your option) any later version. * * This library is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU * Lesser General Public License for more details. * * You should have received a copy of the GNU Lesser General Public * License along with this library; * if not, see . */ #include "eio_private.h" #include "Eio.h" #include "Eina.h" #include "Ecore_File.h" #include #include #include /*============================================================================* * Local * *============================================================================*/ /** * @cond LOCAL */ #define KEVENT_NUM_EVENTS 5 struct _Eio_Monitor_Backend { Eio_Monitor *parent; Eina_List *prev_list; int fd; }; typedef struct _Eio_File_Info Eio_File_Info; struct _Eio_File_Info { const char *path; Eina_Stat st; }; static Ecore_Fd_Handler *_kqueue_fd = NULL; static Eina_Hash *_kevent_monitors = NULL; static void _eio_kevent_ls_free(Eina_List *list) { Eio_File_Info *file; EINA_LIST_FREE(list, file) { eina_stringshare_del(file->path); free(file); } } static void _eio_kevent_del(void *data) { Eio_Monitor_Backend *emb = data; _eio_kevent_ls_free(emb->prev_list); if (emb->fd) close(emb->fd); free(emb); } static Eina_List * _eio_kevent_ls(const char *directory) { Eina_Iterator *it; Eina_File_Direct_Info *info; Eina_List *files = NULL; it = eina_file_direct_ls(directory); if (!it) return NULL; EINA_ITERATOR_FOREACH(it, info) { Eio_File_Info *file = malloc(sizeof(Eio_File_Info)); if (eina_file_statat(eina_iterator_container_get(it), info, &file->st)) { free(file); continue; } file->path = eina_stringshare_add(info->path); files = eina_list_append(files, file); } eina_iterator_free(it); return files; } static void _eio_kevent_event_find(Eio_Monitor_Backend *backend) { Eina_List *l, *l2; Eio_File_Info *file, *file2; Eina_List *next_list = _eio_kevent_ls(backend->parent->path); EINA_LIST_FOREACH(backend->prev_list, l, file) { Eina_Bool exists = EINA_FALSE; EINA_LIST_FOREACH(next_list, l2, file2) { if (file->st.ino == file2->st.ino) { if (file->path == file2->path) exists = EINA_TRUE; if (file->st.mtime != file2->st.mtime) { if (S_ISDIR(file->st.mode)) _eio_monitor_send(backend->parent, file->path, EIO_MONITOR_DIRECTORY_MODIFIED); else _eio_monitor_send(backend->parent, file->path, EIO_MONITOR_FILE_MODIFIED); } } } if (!exists) { if (S_ISDIR(file->st.mode)) _eio_monitor_send(backend->parent, file->path, EIO_MONITOR_DIRECTORY_DELETED); else _eio_monitor_send(backend->parent, file->path, EIO_MONITOR_FILE_DELETED); } } EINA_LIST_FOREACH(next_list, l, file) { Eina_Bool exists = EINA_FALSE; EINA_LIST_FOREACH(backend->prev_list, l2, file2) { if ((file->path == file2->path) && (file->st.ino == file2->st.ino)) { exists = EINA_TRUE; break; } } if (!exists) { if (S_ISDIR(file->st.mode)) _eio_monitor_send(backend->parent, file->path, EIO_MONITOR_DIRECTORY_CREATED); else _eio_monitor_send(backend->parent, file->path, EIO_MONITOR_FILE_CREATED); } } _eio_kevent_ls_free(backend->prev_list); backend->prev_list = next_list; } static Eina_Bool _eio_kevent_handler(void *data EINA_UNUSED, Ecore_Fd_Handler *fdh) { Eio_Monitor_Backend *backend; struct kevent evs[KEVENT_NUM_EVENTS]; int event_code = 0; const struct timespec timeout = { 0, 0 }; int res = kevent(ecore_main_fd_handler_fd_get(fdh), 0, 0, evs, KEVENT_NUM_EVENTS, &timeout); for(int i=0; iparent, backend->parent->path, event_code); } if(evs[i].fflags & NOTE_WRITE || evs[i].fflags & NOTE_ATTRIB) { /* Handle directory/file creation and deletion */ _eio_kevent_event_find(backend); /* Old default behaviour */ event_code = EIO_MONITOR_FILE_MODIFIED; _eio_monitor_send(backend->parent, backend->parent->path, event_code); } } return ECORE_CALLBACK_RENEW; } /** * @endcond */ /*============================================================================* * Global * *============================================================================*/ /** * @cond LOCAL */ /** * @endcond */ void eio_monitor_backend_init(void) { int fd; if (_kqueue_fd != NULL) return; // already initialized fd = kqueue(); if (fd < 0) return; _kqueue_fd = ecore_main_fd_handler_add(fd, ECORE_FD_READ, _eio_kevent_handler, NULL, NULL, NULL); if (!_kqueue_fd) { close(fd); return; } _kevent_monitors = eina_hash_int32_new(_eio_kevent_del); } void eio_monitor_backend_shutdown(void) { int fd; if (!_kqueue_fd) return; eina_hash_free(_kevent_monitors); fd = ecore_main_fd_handler_fd_get(_kqueue_fd); ecore_main_fd_handler_del(_kqueue_fd); _kqueue_fd = NULL; if (fd < 0) return; close(fd); } void eio_monitor_backend_add(Eio_Monitor *monitor) { struct kevent e; struct stat st; Eio_Monitor_Backend* backend; int fd, res = 0; if (!_kqueue_fd) { return; } backend = calloc(1, sizeof (Eio_Monitor_Backend)); if (!backend) return; res = stat(monitor->path, &st); if (res) goto error; fd = open(monitor->path, O_RDONLY); if (fd < 0) goto error; eina_file_close_on_exec(fd, EINA_TRUE); backend->fd = fd; backend->parent = monitor; monitor->backend = backend; backend->prev_list = _eio_kevent_ls(backend->parent->path); eina_hash_direct_add(_kevent_monitors, &backend->fd, backend); EV_SET(&e, fd, EVFILT_VNODE, EV_ADD | EV_CLEAR, NOTE_DELETE | NOTE_WRITE | NOTE_ATTRIB, 0, NULL); res = kevent(ecore_main_fd_handler_fd_get(_kqueue_fd), &e, 1, 0, 0, 0); if (res) { eina_hash_del(_kevent_monitors, &backend->fd, backend); } return; error: free(backend); } void eio_monitor_backend_del(Eio_Monitor *monitor) { Eio_Monitor_Backend *backend; backend = monitor->backend; monitor->backend = NULL; eina_hash_del(_kevent_monitors, &backend->fd, backend); } Eina_Bool eio_monitor_context_check(const Eio_Monitor *monitor, const char *path) { Eio_Monitor_Backend *backend = monitor->backend; Eina_List *l; Eio_File_Info *file; EINA_LIST_FOREACH(backend->prev_list, l, file) { if (eina_streq(file->path, path)) { return EINA_TRUE; } } return EINA_FALSE; } /*============================================================================* * API * *============================================================================*/