1 /* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
2 /* dbus-pipe-unix.c unix related pipe implementation
3 *
4 * Copyright (C) 2002, 2003, 2006 Red Hat, Inc.
5 * Copyright (C) 2003 CodeFactory AB
6 *
7 * Licensed under the Academic Free License version 2.1
8 *
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
22 *
23 */
24
25 #include <config.h>
26 #include "dbus-protocol.h"
27 #include "dbus-string.h"
28 #include "dbus-internals.h"
29 #include "dbus-pipe.h"
30 #include "dbus-sysdeps-unix.h"
31
32 #include <errno.h>
33
34 /**
35 * write data to a pipe.
36 *
37 * @param pipe the pipe instance
38 * @param buffer the buffer to write data from
39 * @param start the first byte in the buffer to write
40 * @param len the number of bytes to try to write
41 * @param error error return
42 * @returns the number of bytes written or -1 on error
43 */
44 int
_dbus_pipe_write(DBusPipe * pipe,const DBusString * buffer,int start,int len,DBusError * error)45 _dbus_pipe_write (DBusPipe *pipe,
46 const DBusString *buffer,
47 int start,
48 int len,
49 DBusError *error)
50 {
51 int written;
52
53 written = _dbus_write (pipe->fd, buffer, start, len);
54 if (written < 0)
55 {
56 dbus_set_error (error, DBUS_ERROR_FAILED,
57 "Writing to pipe: %s\n",
58 _dbus_strerror (errno));
59 }
60 return written;
61 }
62
63 /**
64 * close a pipe.
65 *
66 * @param pipe the pipe instance
67 * @param error return location for an error
68 * @returns -1 if error is set
69 */
70 int
_dbus_pipe_close(DBusPipe * pipe,DBusError * error)71 _dbus_pipe_close (DBusPipe *pipe,
72 DBusError *error)
73 {
74 if (!_dbus_close (pipe->fd, error))
75 {
76 return -1;
77 }
78 else
79 {
80 _dbus_pipe_invalidate (pipe);
81 return 0;
82 }
83 }
84