mirror of
https://gitlab.freedesktop.org/dbus/dbus.git
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43b944a0a6
* dbus/dbus-sysdeps.c (_dbus_set_errno_to_zero) (_dbus_get_is_errno_nonzero, _dbus_get_is_errno_eintr) (_dbus_strerror_from_errno): family of functions to abstract errno, though these are somewhat bogus (really we should make our socket wrappers not use errno probably - the issue is that any usage of errno that isn't socket-related probably is not cross-platform, so should either be in a unix-only file that can use errno directly, or is a bug - these general errno wrappers hide issues of this nature in non-socket code, while socket-specific API changes would not since sockets are allowed cross-platform)
93 lines
2.3 KiB
C
93 lines
2.3 KiB
C
/* -*- mode: C; c-file-style: "gnu" -*- */
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/* dir-watch-dnotify.c OS specific directory change notification for message bus
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*
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* Copyright (C) 2003 Red Hat, Inc.
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*
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* Licensed under the Academic Free License version 2.1
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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*/
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#include <config.h>
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#define _GNU_SOURCE
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#include <stdlib.h>
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#include <unistd.h>
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#include <fcntl.h>
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#ifdef HAVE_ERRNO_H
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#include <errno.h>
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#endif
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#include <dbus/dbus-internals.h>
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#include "dir-watch.h"
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#define MAX_DIRS_TO_WATCH 128
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/* use a static array to avoid handling OOM */
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static int fds[MAX_DIRS_TO_WATCH];
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static int num_fds = 0;
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void
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bus_watch_directory (const char *dir, BusContext *context)
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{
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int fd;
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_dbus_assert (dir != NULL);
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if (num_fds >= MAX_DIRS_TO_WATCH )
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{
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_dbus_warn ("Cannot watch config directory '%s'. Already watching %d directories\n", dir, MAX_DIRS_TO_WATCH);
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goto out;
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}
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fd = open (dir, O_RDONLY);
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if (fd < 0)
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{
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_dbus_warn ("Cannot open directory '%s'; error '%s'\n", dir, _dbus_strerror (errno));
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goto out;
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}
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if (fcntl (fd, F_NOTIFY, DN_DELETE|DN_RENAME|DN_MODIFY) == -1)
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{
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_dbus_warn ("Cannot setup D_NOTIFY for '%s' error '%s'\n", dir, _dbus_strerror (errno));
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close (fd);
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goto out;
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}
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fds[num_fds++] = fd;
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_dbus_verbose ("Added watch on config directory '%s'\n", dir);
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out:
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;
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}
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void
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bus_drop_all_directory_watches (void)
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{
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int i;
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_dbus_verbose ("Dropping all watches on config directories\n");
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for (i = 0; i < num_fds; i++)
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{
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if (close (fds[i]) != 0)
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{
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_dbus_verbose ("Error closing fd %d for config directory watch\n", fds[i]);
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}
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}
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num_fds = 0;
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}
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