332 lines
8.6 KiB
C
332 lines
8.6 KiB
C
#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <sys/types.h>
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#include <unistd.h>
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#include "ecore_file_private.h"
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/*
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* TODO:
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*
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* - Listen to these events:
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* IN_ACCESS, IN_ATTRIB, IN_CLOSE_WRITE, IN_CLOSE_NOWRITE, IN_OPEN
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* - Read all events first, then call the callbacks. This will prevent several
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* callbacks with the typic save cycle (delete file, new file)
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* - Listen to IN_IGNORED, emitted when the watch is removed
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*/
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#ifdef HAVE_SYS_INOTIFY_H
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#include <sys/inotify.h>
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typedef struct _Ecore_File_Monitor_Inotify Ecore_File_Monitor_Inotify;
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#define ECORE_FILE_MONITOR_INOTIFY(x) ((Ecore_File_Monitor_Inotify *)(x))
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struct _Ecore_File_Monitor_Inotify
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{
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Ecore_File_Monitor monitor;
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int wd;
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};
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static Ecore_Fd_Handler *_fdh = NULL;
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static Ecore_File_Monitor *_monitors = NULL;
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static pid_t _inotify_fd_pid = -1;
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static Eina_Bool _ecore_file_monitor_inotify_handler(void *data, Ecore_Fd_Handler *fdh);
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static Ecore_File_Monitor *_ecore_file_monitor_inotify_monitor_find(int wd);
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static void _ecore_file_monitor_inotify_events(Ecore_File_Monitor *em, char *file, int mask);
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static int _ecore_file_monitor_inotify_monitor(Ecore_File_Monitor *em, const char *path);
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#if 0
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static void _ecore_file_monitor_inotify_print(char *file, int mask);
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#endif
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int
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ecore_file_monitor_inotify_init(void)
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{
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int fd;
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fd = inotify_init();
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if (fd < 0)
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return 0;
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_fdh = ecore_main_fd_handler_add(fd, ECORE_FD_READ, _ecore_file_monitor_inotify_handler,
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NULL, NULL, NULL);
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if (!_fdh)
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{
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close(fd);
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return 0;
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}
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_inotify_fd_pid = getpid();
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return 1;
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}
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int
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ecore_file_monitor_inotify_shutdown(void)
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{
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int fd;
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while(_monitors)
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ecore_file_monitor_inotify_del(_monitors);
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if (_fdh)
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{
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fd = ecore_main_fd_handler_fd_get(_fdh);
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ecore_main_fd_handler_del(_fdh);
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close(fd);
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}
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_inotify_fd_pid = -1;
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return 1;
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}
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Ecore_File_Monitor *
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ecore_file_monitor_inotify_add(const char *path,
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void (*func) (void *data, Ecore_File_Monitor *em,
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Ecore_File_Event event,
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const char *path),
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void *data)
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{
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Ecore_File_Monitor *em;
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int len;
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if (_inotify_fd_pid == -1) return NULL;
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if (_inotify_fd_pid != getpid())
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{
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ecore_file_monitor_inotify_shutdown();
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ecore_file_monitor_inotify_init();
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}
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em = calloc(1, sizeof(Ecore_File_Monitor_Inotify));
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if (!em) return NULL;
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em->func = func;
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em->data = data;
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em->path = strdup(path);
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len = strlen(em->path);
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if (em->path[len - 1] == '/' && strcmp(em->path, "/"))
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em->path[len - 1] = 0;
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_monitors = ECORE_FILE_MONITOR(eina_inlist_append(EINA_INLIST_GET(_monitors), EINA_INLIST_GET(em)));
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if (!_ecore_file_monitor_inotify_monitor(em, em->path))
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return NULL;
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return em;
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}
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void
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ecore_file_monitor_inotify_del(Ecore_File_Monitor *em)
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{
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int fd;
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if (_monitors)
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_monitors = ECORE_FILE_MONITOR(eina_inlist_remove(EINA_INLIST_GET(_monitors), EINA_INLIST_GET(em)));
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fd = ecore_main_fd_handler_fd_get(_fdh);
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if (ECORE_FILE_MONITOR_INOTIFY(em)->wd)
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inotify_rm_watch(fd, ECORE_FILE_MONITOR_INOTIFY(em)->wd);
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free(em->path);
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free(em);
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}
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static Eina_Bool
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_ecore_file_monitor_inotify_handler(void *data EINA_UNUSED, Ecore_Fd_Handler *fdh)
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{
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Ecore_File_Monitor *em;
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char buffer[16384];
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struct inotify_event *event;
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int i = 0;
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int event_size;
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ssize_t size;
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size = read(ecore_main_fd_handler_fd_get(fdh), buffer, sizeof(buffer));
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while (i < size)
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{
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event = (struct inotify_event *)&buffer[i];
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event_size = sizeof(struct inotify_event) + event->len;
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i += event_size;
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em = _ecore_file_monitor_inotify_monitor_find(event->wd);
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if (!em) continue;
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_ecore_file_monitor_inotify_events(em, (event->len ? event->name : NULL), event->mask);
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}
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return ECORE_CALLBACK_RENEW;
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}
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static Ecore_File_Monitor *
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_ecore_file_monitor_inotify_monitor_find(int wd)
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{
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Ecore_File_Monitor *l;
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EINA_INLIST_FOREACH(_monitors, l)
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{
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if (ECORE_FILE_MONITOR_INOTIFY(l)->wd == wd)
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return l;
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}
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return NULL;
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}
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static void
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_ecore_file_monitor_inotify_events(Ecore_File_Monitor *em, char *file, int mask)
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{
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char buf[PATH_MAX];
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int isdir;
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if ((file) && (file[0]))
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snprintf(buf, sizeof(buf), "%s/%s", em->path, file);
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else
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strcpy(buf, em->path);
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isdir = mask & IN_ISDIR;
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#if 0
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_ecore_file_monitor_inotify_print(buf, mask);
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#endif
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if (mask & IN_ATTRIB)
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{
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em->func(em->data, em, ECORE_FILE_EVENT_MODIFIED, buf);
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}
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if (mask & IN_CLOSE_WRITE)
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{
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if (!isdir)
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em->func(em->data, em, ECORE_FILE_EVENT_CLOSED, buf);
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}
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if (mask & IN_MODIFY)
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{
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if (!isdir)
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em->func(em->data, em, ECORE_FILE_EVENT_MODIFIED, buf);
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}
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if (mask & IN_MOVED_FROM)
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{
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if (isdir)
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em->func(em->data, em, ECORE_FILE_EVENT_DELETED_DIRECTORY, buf);
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else
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em->func(em->data, em, ECORE_FILE_EVENT_DELETED_FILE, buf);
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}
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if (mask & IN_MOVED_TO)
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{
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if (isdir)
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em->func(em->data, em, ECORE_FILE_EVENT_CREATED_DIRECTORY, buf);
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else
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em->func(em->data, em, ECORE_FILE_EVENT_CREATED_FILE, buf);
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}
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if (mask & IN_DELETE)
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{
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if (isdir)
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em->func(em->data, em, ECORE_FILE_EVENT_DELETED_DIRECTORY, buf);
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else
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em->func(em->data, em, ECORE_FILE_EVENT_DELETED_FILE, buf);
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}
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if (mask & IN_CREATE)
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{
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if (isdir)
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em->func(em->data, em, ECORE_FILE_EVENT_CREATED_DIRECTORY, buf);
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else
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em->func(em->data, em, ECORE_FILE_EVENT_CREATED_FILE, buf);
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}
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if (mask & IN_DELETE_SELF)
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{
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em->func(em->data, em, ECORE_FILE_EVENT_DELETED_SELF, em->path);
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}
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if (mask & IN_MOVE_SELF)
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{
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/* We just call delete. The dir is gone... */
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em->func(em->data, em, ECORE_FILE_EVENT_DELETED_SELF, em->path);
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}
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if (mask & IN_UNMOUNT)
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{
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/* We just call delete. The dir is gone... */
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em->func(em->data, em, ECORE_FILE_EVENT_DELETED_SELF, em->path);
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}
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if (mask & IN_IGNORED)
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{
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/* The watch is removed. If the file name still exists monitor the new one,
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* else delete it */
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if (ecore_file_exists(em->path))
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{
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if (_ecore_file_monitor_inotify_monitor(em, em->path))
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em->func(em->data, em, ECORE_FILE_EVENT_DELETED_SELF, em->path);
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}
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else
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em->func(em->data, em, ECORE_FILE_EVENT_DELETED_SELF, em->path);
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}
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}
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static int
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_ecore_file_monitor_inotify_monitor(Ecore_File_Monitor *em, const char *path)
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{
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int mask =
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IN_ATTRIB |
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IN_CLOSE_WRITE |
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IN_MOVED_FROM |
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IN_MOVED_TO |
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IN_DELETE |
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IN_CREATE |
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IN_MODIFY |
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IN_DELETE_SELF |
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IN_MOVE_SELF |
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IN_UNMOUNT;
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ECORE_FILE_MONITOR_INOTIFY(em)->wd =
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inotify_add_watch(ecore_main_fd_handler_fd_get(_fdh), path, mask);
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if (ECORE_FILE_MONITOR_INOTIFY(em)->wd < 0)
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{
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INF("inotify_add_watch failed, file was deleted");
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ecore_file_monitor_inotify_del(em);
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return 0;
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}
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return 1;
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}
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#if 0
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static void
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_ecore_file_monitor_inotify_print(char *file, int mask)
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{
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const char *type;
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if (mask & IN_ISDIR)
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type = "dir";
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else
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type = "file";
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if (mask & IN_ACCESS)
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INF("Inotify accessed %s: %s", type, file);
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if (mask & IN_MODIFY)
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INF("Inotify modified %s: %s", type, file);
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if (mask & IN_ATTRIB)
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INF("Inotify attributes %s: %s", type, file);
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if (mask & IN_CLOSE_WRITE)
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INF("Inotify close write %s: %s", type, file);
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if (mask & IN_CLOSE_NOWRITE)
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INF("Inotify close write %s: %s", type, file);
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if (mask & IN_OPEN)
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INF("Inotify open %s: %s", type, file);
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if (mask & IN_MOVED_FROM)
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INF("Inotify moved from %s: %s", type, file);
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if (mask & IN_MOVED_TO)
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INF("Inotify moved to %s: %s", type, file);
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if (mask & IN_DELETE)
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INF("Inotify delete %s: %s", type, file);
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if (mask & IN_CREATE)
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INF("Inotify create %s: %s", type, file);
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if (mask & IN_DELETE_SELF)
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INF("Inotify delete self %s: %s", type, file);
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if (mask & IN_MOVE_SELF)
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INF("Inotify move self %s: %s", type, file);
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if (mask & IN_UNMOUNT)
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INF("Inotify unmount %s: %s", type, file);
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}
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#endif
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#endif /* HAVE_SYS_INOTIFY_H */
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