diff options
Diffstat (limited to 'src/settings/plugins/ifcfg-rh/nm-inotify-helper.c')
| -rw-r--r-- | src/settings/plugins/ifcfg-rh/nm-inotify-helper.c | 213 |
1 files changed, 0 insertions, 213 deletions
diff --git a/src/settings/plugins/ifcfg-rh/nm-inotify-helper.c b/src/settings/plugins/ifcfg-rh/nm-inotify-helper.c deleted file mode 100644 index 04cbb5bc..00000000 --- a/src/settings/plugins/ifcfg-rh/nm-inotify-helper.c +++ /dev/null @@ -1,213 +0,0 @@ -/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */ -/* NetworkManager system settings service - * - * 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. - * - * (C) Copyright 2008 - 2017 Red Hat, Inc. - */ - -#include "nm-default.h" - -#include "nm-inotify-helper.h" - -#include <unistd.h> -#include <sys/inotify.h> - -#include "NetworkManagerUtils.h" - -/* NOTE: this code should be killed once we depend on a new enough glib to - * include the patches from https://bugzilla.gnome.org/show_bug.cgi?id=532815 - */ - -/*****************************************************************************/ - -enum { - EVENT, - LAST_SIGNAL -}; - -static guint signals[LAST_SIGNAL] = { 0 }; - -typedef struct { - int ifd; - guint inotify_id; - GHashTable *wd_refs; -} NMInotifyHelperPrivate; - -struct _NMInotifyHelper { - GObject parent; - NMInotifyHelperPrivate _priv; -}; - -struct _NMInotifyHelperClass { - GObjectClass parent; -}; - -G_DEFINE_TYPE (NMInotifyHelper, nm_inotify_helper, G_TYPE_OBJECT) - -#define NM_INOTIFY_HELPER_GET_PRIVATE(self) _NM_GET_PRIVATE (self, NMInotifyHelper, NM_IS_INOTIFY_HELPER) - -/*****************************************************************************/ - -NM_DEFINE_SINGLETON_GETTER (NMInotifyHelper, nm_inotify_helper_get, NM_TYPE_INOTIFY_HELPER); - -/*****************************************************************************/ - -int -nm_inotify_helper_add_watch (NMInotifyHelper *self, const char *path) -{ - NMInotifyHelperPrivate *priv = NM_INOTIFY_HELPER_GET_PRIVATE (self); - int wd; - guint refcount; - - if (priv->ifd < 0) - return -1; - - /* We only care about modifications since we're just trying to get change - * notifications on hardlinks. - */ - - wd = inotify_add_watch (priv->ifd, path, IN_CLOSE_WRITE); - if (wd < 0) - return -1; - - refcount = GPOINTER_TO_UINT (g_hash_table_lookup (priv->wd_refs, GINT_TO_POINTER (wd))); - refcount++; - g_hash_table_replace (priv->wd_refs, GINT_TO_POINTER (wd), GUINT_TO_POINTER (refcount)); - - return wd; -} - -void -nm_inotify_helper_remove_watch (NMInotifyHelper *self, int wd) -{ - NMInotifyHelperPrivate *priv = NM_INOTIFY_HELPER_GET_PRIVATE (self); - guint refcount; - - if (priv->ifd < 0) - return; - - refcount = GPOINTER_TO_UINT (g_hash_table_lookup (priv->wd_refs, GINT_TO_POINTER (wd))); - if (!refcount) - return; - - refcount--; - if (!refcount) { - g_hash_table_remove (priv->wd_refs, GINT_TO_POINTER (wd)); - inotify_rm_watch (priv->ifd, wd); - } else - g_hash_table_replace (priv->wd_refs, GINT_TO_POINTER (wd), GUINT_TO_POINTER (refcount)); -} - -static gboolean -inotify_event_handler (GIOChannel *channel, GIOCondition cond, gpointer user_data) -{ - NMInotifyHelper *self = NM_INOTIFY_HELPER (user_data); - struct inotify_event evt; - - /* read the notifications from the watch descriptor */ - while (g_io_channel_read_chars (channel, (char *) &evt, sizeof (struct inotify_event), NULL, NULL) == G_IO_STATUS_NORMAL) { - char filename[PATH_MAX + 1]; - - filename[0] = '\0'; - if (evt.len > 0) { - g_io_channel_read_chars (channel, - filename, - evt.len > PATH_MAX ? PATH_MAX : evt.len, - NULL, NULL); - } - - if (!(evt.mask & IN_IGNORED)) - g_signal_emit (self, signals[EVENT], 0, &evt, &filename[0]); - } - - return TRUE; -} - -static gboolean -init_inotify (NMInotifyHelper *self) -{ - NMInotifyHelperPrivate *priv = NM_INOTIFY_HELPER_GET_PRIVATE (self); - GIOChannel *channel; - int errsv; - - priv->ifd = inotify_init1 (IN_CLOEXEC); - if (priv->ifd == -1) { - errsv = errno; - nm_log_warn (LOGD_SETTINGS, "couldn't initialize inotify: %s (%d)", nm_strerror_native (errsv), errsv); - return FALSE; - } - - /* Watch the inotify descriptor for file/directory change events */ - channel = g_io_channel_unix_new (priv->ifd); - g_io_channel_set_flags (channel, G_IO_FLAG_NONBLOCK, NULL); - g_io_channel_set_encoding (channel, NULL, NULL); - - priv->inotify_id = g_io_add_watch (channel, - G_IO_IN | G_IO_ERR, - (GIOFunc) inotify_event_handler, - (gpointer) self); - g_io_channel_unref (channel); - return TRUE; -} - -/*****************************************************************************/ - -static void -nm_inotify_helper_init (NMInotifyHelper *self) -{ - NMInotifyHelperPrivate *priv = NM_INOTIFY_HELPER_GET_PRIVATE (self); - - priv->wd_refs = g_hash_table_new (nm_direct_hash, NULL); -} - -static void -constructed (GObject *object) -{ - G_OBJECT_CLASS (nm_inotify_helper_parent_class)->constructed (object); - - init_inotify (NM_INOTIFY_HELPER (object)); -} - -static void -finalize (GObject *object) -{ - NMInotifyHelperPrivate *priv = NM_INOTIFY_HELPER_GET_PRIVATE ((NMInotifyHelper *) object); - - nm_clear_g_source (&priv->inotify_id); - nm_close (priv->ifd); - - g_hash_table_destroy (priv->wd_refs); - - G_OBJECT_CLASS (nm_inotify_helper_parent_class)->finalize (object); -} - -static void -nm_inotify_helper_class_init (NMInotifyHelperClass *klass) -{ - GObjectClass *object_class = G_OBJECT_CLASS (klass); - - object_class->constructed = constructed; - object_class->finalize = finalize; - - signals[EVENT] = - g_signal_new ("event", - G_OBJECT_CLASS_TYPE (object_class), - G_SIGNAL_RUN_LAST, - 0, - NULL, NULL, NULL, - G_TYPE_NONE, 2, G_TYPE_POINTER, G_TYPE_STRING); -} - |