diff options
Diffstat (limited to 'src/3rd_party/dbus-1.7.8/bus/dir-watch-kqueue.c')
| -rw-r--r-- | src/3rd_party/dbus-1.7.8/bus/dir-watch-kqueue.c | 250 |
1 files changed, 0 insertions, 250 deletions
diff --git a/src/3rd_party/dbus-1.7.8/bus/dir-watch-kqueue.c b/src/3rd_party/dbus-1.7.8/bus/dir-watch-kqueue.c deleted file mode 100644 index c60560f00f..0000000000 --- a/src/3rd_party/dbus-1.7.8/bus/dir-watch-kqueue.c +++ /dev/null @@ -1,250 +0,0 @@ -/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */ -/* dir-watch-kqueue.c OS specific directory change notification for message bus - * - * Copyright (C) 2003 Red Hat, Inc. - * - * Licensed under the Academic Free License version 2.1 - * - * 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 <sys/types.h> -#include <sys/event.h> -#include <sys/time.h> -#include <signal.h> -#include <fcntl.h> -#include <unistd.h> -#ifdef HAVE_ERRNO_H -#include <errno.h> -#endif - -#include "bus.h" -#include <dbus/dbus-watch.h> - -#include <dbus/dbus-internals.h> -#include <dbus/dbus-list.h> -#include "dir-watch.h" - -#define MAX_DIRS_TO_WATCH 128 - -static int kq = -1; -static int fds[MAX_DIRS_TO_WATCH]; -static char *dirs[MAX_DIRS_TO_WATCH]; -static int num_fds = 0; -static DBusWatch *watch = NULL; -static DBusLoop *loop = NULL; - -static dbus_bool_t -_handle_kqueue_watch (DBusWatch *watch, unsigned int flags, void *data) -{ - struct kevent ev; - struct timespec nullts = { 0, 0 }; - int res; - pid_t pid; - - res = kevent (kq, NULL, 0, &ev, 1, &nullts); - - /* Sleep for half a second to avoid a race when files are install(1)'d - * to system.d. */ - usleep(500000); - - if (res > 0) - { - pid = getpid (); - _dbus_verbose ("Sending SIGHUP signal on reception of a kevent\n"); - (void) kill (pid, SIGHUP); - } - else if (res < 0 && errno == EBADF) - { - kq = -1; - if (watch != NULL) - { - _dbus_loop_remove_watch (loop, watch); - _dbus_watch_invalidate (watch); - _dbus_watch_unref (watch); - watch = NULL; - } - pid = getpid (); - _dbus_verbose ("Sending SIGHUP signal since kqueue has been closed\n"); - (void) kill (pid, SIGHUP); - } - - return TRUE; -} - -static int -_init_kqueue (BusContext *context) -{ - int ret = 0; - - if (kq < 0) - { - - kq = kqueue (); - if (kq < 0) - { - _dbus_warn ("Cannot create kqueue; error '%s'\n", _dbus_strerror (errno)); - goto out; - } - - loop = bus_context_get_loop (context); - - watch = _dbus_watch_new (kq, DBUS_WATCH_READABLE, TRUE, - _handle_kqueue_watch, NULL, NULL); - - if (watch == NULL) - { - _dbus_warn ("Unable to create kqueue watch\n"); - close (kq); - kq = -1; - goto out; - } - - if (!_dbus_loop_add_watch (loop, watch)) - { - _dbus_warn ("Unable to add reload watch to main loop"); - _dbus_watch_invalidate (watch); - _dbus_watch_unref (watch); - watch = NULL; - close (kq); - kq = -1; - goto out; - } - } - - ret = 1; - -out: - return ret; -} - -void -bus_set_watched_dirs (BusContext *context, DBusList **directories) -{ - int new_fds[MAX_DIRS_TO_WATCH]; - char *new_dirs[MAX_DIRS_TO_WATCH]; - DBusList *link; - int i, j, fd; - struct kevent ev; - - if (!_init_kqueue (context)) - goto out; - - for (i = 0; i < MAX_DIRS_TO_WATCH; i++) - { - new_fds[i] = -1; - new_dirs[i] = NULL; - } - - i = 0; - link = _dbus_list_get_first_link (directories); - while (link != NULL) - { - new_dirs[i++] = (char *)link->data; - link = _dbus_list_get_next_link (directories, link); - } - - /* Look for directories in both the old and new sets, if - * we find one, move its data into the new set. - */ - for (i = 0; new_dirs[i]; i++) - { - for (j = 0; j < num_fds; j++) - { - if (dirs[j] && strcmp (new_dirs[i], dirs[j]) == 0) - { - new_fds[i] = fds[j]; - new_dirs[i] = dirs[j]; - fds[j] = -1; - dirs[j] = NULL; - break; - } - } - } - - /* Any directory we find in "fds" with a nonzero fd must - * not be in the new set, so perform cleanup now. - */ - for (j = 0; j < num_fds; j++) - { - if (fds[j] != -1) - { - close (fds[j]); - dbus_free (dirs[j]); - fds[j] = -1; - dirs[j] = NULL; - } - } - - for (i = 0; new_dirs[i]; i++) - { - if (new_fds[i] == -1) - { - /* FIXME - less lame error handling for failing to add a watch; - * we may need to sleep. - */ - fd = open (new_dirs[i], O_RDONLY); - if (fd < 0) - { - if (errno != ENOENT) - { - _dbus_warn ("Cannot open directory '%s'; error '%s'\n", new_dirs[i], _dbus_strerror (errno)); - goto out; - } - else - { - new_fds[i] = -1; - new_dirs[i] = NULL; - continue; - } - } - - EV_SET (&ev, fd, EVFILT_VNODE, EV_ADD | EV_ENABLE | EV_CLEAR, - NOTE_DELETE | NOTE_EXTEND | NOTE_WRITE | NOTE_RENAME, 0, 0); - if (kevent (kq, &ev, 1, NULL, 0, NULL) == -1) - { - _dbus_warn ("Cannot setup a kevent for '%s'; error '%s'\n", new_dirs[i], _dbus_strerror (errno)); - close (fd); - goto out; - } - - new_fds[i] = fd; - new_dirs[i] = _dbus_strdup (new_dirs[i]); - if (!new_dirs[i]) - { - /* FIXME have less lame handling for OOM, we just silently fail to - * watch. (In reality though, the whole OOM handling in dbus is - * stupid but we won't go into that in this comment =) ) - */ - close (fd); - new_fds[i] = -1; - } - } - } - - num_fds = i; - - for (i = 0; i < MAX_DIRS_TO_WATCH; i++) - { - fds[i] = new_fds[i]; - dirs[i] = new_dirs[i]; - } - - out: - ; -} |