diff options
Diffstat (limited to 'src/inotify_source.c')
| -rw-r--r-- | src/inotify_source.c | 169 |
1 files changed, 0 insertions, 169 deletions
diff --git a/src/inotify_source.c b/src/inotify_source.c deleted file mode 100644 index 2fbfdff7e..000000000 --- a/src/inotify_source.c +++ /dev/null @@ -1,169 +0,0 @@ -/* - * Copyright (C) 2003-2011 The Music Player Daemon Project - * http://www.musicpd.org - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation; either version 2 of the License, or - * (at your option) any later version. - * - * This program 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 General Public License for more details. - * - * You should have received a copy of the GNU General Public License along - * with this program; if not, write to the Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. - */ - -#include "config.h" -#include "inotify_source.h" -#include "fifo_buffer.h" -#include "fd_util.h" -#include "mpd_error.h" - -#include <glib.h> - -#include <sys/inotify.h> -#include <unistd.h> -#include <errno.h> -#include <stdbool.h> - -#undef G_LOG_DOMAIN -#define G_LOG_DOMAIN "inotify" - -struct mpd_inotify_source { - int fd; - - GIOChannel *channel; - - /** - * The channel's source id in the GLib main loop. - */ - guint id; - - struct fifo_buffer *buffer; - - mpd_inotify_callback_t callback; - void *callback_ctx; -}; - -/** - * A GQuark for GError instances. - */ -static inline GQuark -mpd_inotify_quark(void) -{ - return g_quark_from_static_string("inotify"); -} - -static gboolean -mpd_inotify_in_event(G_GNUC_UNUSED GIOChannel *_source, - G_GNUC_UNUSED GIOCondition condition, - gpointer data) -{ - struct mpd_inotify_source *source = data; - void *dest; - size_t length; - ssize_t nbytes; - const struct inotify_event *event; - - dest = fifo_buffer_write(source->buffer, &length); - if (dest == NULL) - MPD_ERROR("buffer full"); - - nbytes = read(source->fd, dest, length); - if (nbytes < 0) - MPD_ERROR("failed to read from inotify: %s", - g_strerror(errno)); - if (nbytes == 0) - MPD_ERROR("end of file from inotify"); - - fifo_buffer_append(source->buffer, nbytes); - - while (true) { - const char *name; - - event = fifo_buffer_read(source->buffer, &length); - if (event == NULL || length < sizeof(*event) || - length < sizeof(*event) + event->len) - break; - - if (event->len > 0 && event->name[event->len - 1] == 0) - name = event->name; - else - name = NULL; - - source->callback(event->wd, event->mask, name, - source->callback_ctx); - fifo_buffer_consume(source->buffer, - sizeof(*event) + event->len); - } - - return true; -} - -struct mpd_inotify_source * -mpd_inotify_source_new(mpd_inotify_callback_t callback, void *callback_ctx, - GError **error_r) -{ - struct mpd_inotify_source *source = - g_new(struct mpd_inotify_source, 1); - - source->fd = inotify_init_cloexec(); - if (source->fd < 0) { - g_set_error(error_r, mpd_inotify_quark(), errno, - "inotify_init() has failed: %s", - g_strerror(errno)); - g_free(source); - return NULL; - } - - source->buffer = fifo_buffer_new(4096); - - source->channel = g_io_channel_unix_new(source->fd); - source->id = g_io_add_watch(source->channel, G_IO_IN, - mpd_inotify_in_event, source); - - source->callback = callback; - source->callback_ctx = callback_ctx; - - return source; -} - -void -mpd_inotify_source_free(struct mpd_inotify_source *source) -{ - g_source_remove(source->id); - g_io_channel_unref(source->channel); - fifo_buffer_free(source->buffer); - close(source->fd); - g_free(source); -} - -int -mpd_inotify_source_add(struct mpd_inotify_source *source, - const char *path_fs, unsigned mask, - GError **error_r) -{ - int wd = inotify_add_watch(source->fd, path_fs, mask); - if (wd < 0) - g_set_error(error_r, mpd_inotify_quark(), errno, - "inotify_add_watch() has failed: %s", - g_strerror(errno)); - - return wd; -} - -void -mpd_inotify_source_rm(struct mpd_inotify_source *source, unsigned wd) -{ - int ret = inotify_rm_watch(source->fd, wd); - if (ret < 0 && errno != EINVAL) - g_warning("inotify_rm_watch() has failed: %s", - g_strerror(errno)); - - /* EINVAL may happen here when the file has been deleted; the - kernel seems to auto-unregister deleted files */ -} |