| Current File : //usr/share/doc/dbus/api/dbus-file-unix_8c_source.html |
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/xhtml;charset=UTF-8"/>
<meta http-equiv="X-UA-Compatible" content="IE=9"/>
<title>D-Bus: dbus-file-unix.c Source File</title>
<link href="tabs.css" rel="stylesheet" type="text/css"/>
<link href="doxygen.css" rel="stylesheet" type="text/css" />
</head>
<body>
<div id="top"><!-- do not remove this div! -->
<div id="titlearea">
<table cellspacing="0" cellpadding="0">
<tbody>
<tr style="height: 56px;">
<td style="padding-left: 0.5em;">
<div id="projectname">D-Bus
 <span id="projectnumber">1.8.20</span>
</div>
</td>
</tr>
</tbody>
</table>
</div>
<!-- Generated by Doxygen 1.7.6.1 -->
<div id="navrow1" class="tabs">
<ul class="tablist">
<li><a href="index.html"><span>Main Page</span></a></li>
<li><a href="pages.html"><span>Related Pages</span></a></li>
<li><a href="modules.html"><span>Modules</span></a></li>
<li><a href="annotated.html"><span>Data Structures</span></a></li>
<li class="current"><a href="files.html"><span>Files</span></a></li>
</ul>
</div>
<div id="navrow2" class="tabs2">
<ul class="tablist">
<li><a href="files.html"><span>File List</span></a></li>
</ul>
</div>
</div>
<div class="header">
<div class="headertitle">
<div class="title">dbus-file-unix.c</div> </div>
</div><!--header-->
<div class="contents">
<div class="fragment"><pre class="fragment"><a name="l00001"></a>00001 <span class="comment">/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */</span>
<a name="l00002"></a>00002 <span class="comment">/* dbus-file-unix.c unix related file implementation (internal to D-Bus implementation)</span>
<a name="l00003"></a>00003 <span class="comment"> * </span>
<a name="l00004"></a>00004 <span class="comment"> * Copyright (C) 2002, 2003, 2006 Red Hat, Inc.</span>
<a name="l00005"></a>00005 <span class="comment"> * Copyright (C) 2003 CodeFactory AB</span>
<a name="l00006"></a>00006 <span class="comment"> *</span>
<a name="l00007"></a>00007 <span class="comment"> * Licensed under the Academic Free License version 2.1</span>
<a name="l00008"></a>00008 <span class="comment"> * </span>
<a name="l00009"></a>00009 <span class="comment"> * This program is free software; you can redistribute it and/or modify</span>
<a name="l00010"></a>00010 <span class="comment"> * it under the terms of the GNU General Public License as published by</span>
<a name="l00011"></a>00011 <span class="comment"> * the Free Software Foundation; either version 2 of the License, or</span>
<a name="l00012"></a>00012 <span class="comment"> * (at your option) any later version.</span>
<a name="l00013"></a>00013 <span class="comment"> *</span>
<a name="l00014"></a>00014 <span class="comment"> * This program is distributed in the hope that it will be useful,</span>
<a name="l00015"></a>00015 <span class="comment"> * but WITHOUT ANY WARRANTY; without even the implied warranty of</span>
<a name="l00016"></a>00016 <span class="comment"> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the</span>
<a name="l00017"></a>00017 <span class="comment"> * GNU General Public License for more details.</span>
<a name="l00018"></a>00018 <span class="comment"> * </span>
<a name="l00019"></a>00019 <span class="comment"> * You should have received a copy of the GNU General Public License</span>
<a name="l00020"></a>00020 <span class="comment"> * along with this program; if not, write to the Free Software</span>
<a name="l00021"></a>00021 <span class="comment"> * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA</span>
<a name="l00022"></a>00022 <span class="comment"> *</span>
<a name="l00023"></a>00023 <span class="comment"> */</span>
<a name="l00024"></a>00024
<a name="l00025"></a>00025 <span class="preprocessor">#include <config.h></span>
<a name="l00026"></a>00026
<a name="l00027"></a>00027 <span class="preprocessor">#include "dbus-protocol.h"</span>
<a name="l00028"></a>00028 <span class="preprocessor">#include "dbus-errors.h"</span>
<a name="l00029"></a>00029 <span class="preprocessor">#include "dbus-file.h"</span>
<a name="l00030"></a>00030 <span class="preprocessor">#include "dbus-internals.h"</span>
<a name="l00031"></a>00031 <span class="preprocessor">#include "dbus-sysdeps.h"</span>
<a name="l00032"></a>00032 <span class="preprocessor">#include "dbus-sysdeps-unix.h"</span>
<a name="l00033"></a>00033
<a name="l00034"></a>00034 <span class="preprocessor">#include <sys/stat.h></span>
<a name="l00035"></a>00035 <span class="preprocessor">#include <stdio.h></span>
<a name="l00036"></a>00036 <span class="preprocessor">#include <fcntl.h></span>
<a name="l00037"></a>00037 <span class="preprocessor">#include <unistd.h></span>
<a name="l00038"></a>00038 <span class="preprocessor">#include <errno.h></span>
<a name="l00039"></a>00039
<a name="l00040"></a>00040 <span class="preprocessor">#ifndef O_BINARY</span>
<a name="l00041"></a>00041 <span class="preprocessor"></span><span class="preprocessor">#define O_BINARY 0</span>
<a name="l00042"></a>00042 <span class="preprocessor"></span><span class="preprocessor">#endif</span>
<a name="l00043"></a>00043 <span class="preprocessor"></span>
<a name="l00054"></a>00054 <a class="code" href="group__DBusTypes.html#ga39c9cb0f3a2a8ad6f55cc4855d035349" title="A boolean, valid values are TRUE and FALSE.">dbus_bool_t</a>
<a name="l00055"></a><a class="code" href="group__DBusFile.html#gad22d468e789139c87f7f4bb97cadf448">00055</a> <a class="code" href="group__DBusFile.html#gad22d468e789139c87f7f4bb97cadf448" title="Appends the contents of the given file to the string, returning error code.">_dbus_file_get_contents</a> (<a class="code" href="structDBusString.html">DBusString</a> *str,
<a name="l00056"></a>00056 <span class="keyword">const</span> <a class="code" href="structDBusString.html">DBusString</a> *filename,
<a name="l00057"></a>00057 <a class="code" href="structDBusError.html" title="Object representing an exception.">DBusError</a> *error)
<a name="l00058"></a>00058 {
<a name="l00059"></a>00059 <span class="keywordtype">int</span> fd;
<a name="l00060"></a>00060 <span class="keyword">struct </span>stat sb;
<a name="l00061"></a>00061 <span class="keywordtype">int</span> orig_len;
<a name="l00062"></a>00062 <span class="keywordtype">int</span> total;
<a name="l00063"></a>00063 <span class="keyword">const</span> <span class="keywordtype">char</span> *filename_c;
<a name="l00064"></a>00064
<a name="l00065"></a>00065 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
<a name="l00066"></a>00066
<a name="l00067"></a>00067 filename_c = <a class="code" href="group__DBusString.html#ga33e20241ae7d784624f97d89b1a0539e" title="Gets the raw character buffer from a const string.">_dbus_string_get_const_data</a> (filename);
<a name="l00068"></a>00068
<a name="l00069"></a>00069 <span class="comment">/* O_BINARY useful on Cygwin */</span>
<a name="l00070"></a>00070 fd = open (filename_c, O_RDONLY | O_BINARY);
<a name="l00071"></a>00071 <span class="keywordflow">if</span> (fd < 0)
<a name="l00072"></a>00072 {
<a name="l00073"></a>00073 <a class="code" href="group__DBusErrors.html#ga89d2ad4bde21f9e0057fac07a79885e3" title="Assigns an error name and message to a DBusError.">dbus_set_error</a> (error, <a class="code" href="group__DBusInternalsUtils.html#ga2212aa0e5732257598a6597748c658e4" title="Converts a UNIX errno, or Windows errno or WinSock error value into a DBusError name.">_dbus_error_from_errno</a> (errno),
<a name="l00074"></a>00074 <span class="stringliteral">"Failed to open \"%s\": %s"</span>,
<a name="l00075"></a>00075 filename_c,
<a name="l00076"></a>00076 _dbus_strerror (errno));
<a name="l00077"></a>00077 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#gaa93f0eb578d23995850d61f7d61c55c1" title="Expands to "0".">FALSE</a>;
<a name="l00078"></a>00078 }
<a name="l00079"></a>00079
<a name="l00080"></a>00080 _dbus_verbose (<span class="stringliteral">"file fd %d opened\n"</span>, fd);
<a name="l00081"></a>00081
<a name="l00082"></a>00082 <span class="keywordflow">if</span> (fstat (fd, &sb) < 0)
<a name="l00083"></a>00083 {
<a name="l00084"></a>00084 <a class="code" href="group__DBusErrors.html#ga89d2ad4bde21f9e0057fac07a79885e3" title="Assigns an error name and message to a DBusError.">dbus_set_error</a> (error, <a class="code" href="group__DBusInternalsUtils.html#ga2212aa0e5732257598a6597748c658e4" title="Converts a UNIX errno, or Windows errno or WinSock error value into a DBusError name.">_dbus_error_from_errno</a> (errno),
<a name="l00085"></a>00085 <span class="stringliteral">"Failed to stat \"%s\": %s"</span>,
<a name="l00086"></a>00086 filename_c,
<a name="l00087"></a>00087 _dbus_strerror (errno));
<a name="l00088"></a>00088
<a name="l00089"></a>00089 _dbus_verbose (<span class="stringliteral">"fstat() failed: %s"</span>,
<a name="l00090"></a>00090 _dbus_strerror (errno));
<a name="l00091"></a>00091
<a name="l00092"></a>00092 <a class="code" href="group__DBusSysdepsUnix.html#gac448479a1674e3b86cee9a4bdc7eba03" title="Closes a file descriptor.">_dbus_close</a> (fd, <a class="code" href="group__DBusMacros.html#ga070d2ce7b6bb7e5c05602aa8c308d0c4" title="A null pointer, defined appropriately for C or C++.">NULL</a>);
<a name="l00093"></a>00093
<a name="l00094"></a>00094 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#gaa93f0eb578d23995850d61f7d61c55c1" title="Expands to "0".">FALSE</a>;
<a name="l00095"></a>00095 }
<a name="l00096"></a>00096
<a name="l00097"></a>00097 <span class="keywordflow">if</span> (sb.st_size > _DBUS_ONE_MEGABYTE)
<a name="l00098"></a>00098 {
<a name="l00099"></a>00099 <a class="code" href="group__DBusErrors.html#ga89d2ad4bde21f9e0057fac07a79885e3" title="Assigns an error name and message to a DBusError.">dbus_set_error</a> (error, <a class="code" href="group__DBusProtocol.html#gabb62fd6340d0787fbd56ff8dd2f326c7" title="A generic error; "something went wrong" - see the error message for more.">DBUS_ERROR_FAILED</a>,
<a name="l00100"></a>00100 <span class="stringliteral">"File size %lu of \"%s\" is too large."</span>,
<a name="l00101"></a>00101 (<span class="keywordtype">unsigned</span> <span class="keywordtype">long</span>) sb.st_size, filename_c);
<a name="l00102"></a>00102 <a class="code" href="group__DBusSysdepsUnix.html#gac448479a1674e3b86cee9a4bdc7eba03" title="Closes a file descriptor.">_dbus_close</a> (fd, <a class="code" href="group__DBusMacros.html#ga070d2ce7b6bb7e5c05602aa8c308d0c4" title="A null pointer, defined appropriately for C or C++.">NULL</a>);
<a name="l00103"></a>00103 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#gaa93f0eb578d23995850d61f7d61c55c1" title="Expands to "0".">FALSE</a>;
<a name="l00104"></a>00104 }
<a name="l00105"></a>00105
<a name="l00106"></a>00106 total = 0;
<a name="l00107"></a>00107 orig_len = <a class="code" href="group__DBusString.html#gaa5136e6fd2c5188f4b88de7863369c6d" title="Gets the length of a string (not including nul termination).">_dbus_string_get_length</a> (str);
<a name="l00108"></a>00108 <span class="keywordflow">if</span> (sb.st_size > 0 && S_ISREG (sb.st_mode))
<a name="l00109"></a>00109 {
<a name="l00110"></a>00110 <span class="keywordtype">int</span> bytes_read;
<a name="l00111"></a>00111
<a name="l00112"></a>00112 <span class="keywordflow">while</span> (total < (<span class="keywordtype">int</span>) sb.st_size)
<a name="l00113"></a>00113 {
<a name="l00114"></a>00114 bytes_read = <a class="code" href="group__DBusSysdepsUnix.html#gaf52cb1d5b9fc5611808ce32eff898c28" title="Thin wrapper around the read() system call that appends the data it reads to the DBusString buffer...">_dbus_read</a> (fd, str,
<a name="l00115"></a>00115 sb.st_size - total);
<a name="l00116"></a>00116 <span class="keywordflow">if</span> (bytes_read <= 0)
<a name="l00117"></a>00117 {
<a name="l00118"></a>00118 <a class="code" href="group__DBusErrors.html#ga89d2ad4bde21f9e0057fac07a79885e3" title="Assigns an error name and message to a DBusError.">dbus_set_error</a> (error, <a class="code" href="group__DBusInternalsUtils.html#ga2212aa0e5732257598a6597748c658e4" title="Converts a UNIX errno, or Windows errno or WinSock error value into a DBusError name.">_dbus_error_from_errno</a> (errno),
<a name="l00119"></a>00119 <span class="stringliteral">"Error reading \"%s\": %s"</span>,
<a name="l00120"></a>00120 filename_c,
<a name="l00121"></a>00121 _dbus_strerror (errno));
<a name="l00122"></a>00122
<a name="l00123"></a>00123 _dbus_verbose (<span class="stringliteral">"read() failed: %s"</span>,
<a name="l00124"></a>00124 _dbus_strerror (errno));
<a name="l00125"></a>00125
<a name="l00126"></a>00126 <a class="code" href="group__DBusSysdepsUnix.html#gac448479a1674e3b86cee9a4bdc7eba03" title="Closes a file descriptor.">_dbus_close</a> (fd, <a class="code" href="group__DBusMacros.html#ga070d2ce7b6bb7e5c05602aa8c308d0c4" title="A null pointer, defined appropriately for C or C++.">NULL</a>);
<a name="l00127"></a>00127 <a class="code" href="group__DBusString.html#ga08c423b93c28dd746dcb93e0461ab95c" title="Sets the length of a string.">_dbus_string_set_length</a> (str, orig_len);
<a name="l00128"></a>00128 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#gaa93f0eb578d23995850d61f7d61c55c1" title="Expands to "0".">FALSE</a>;
<a name="l00129"></a>00129 }
<a name="l00130"></a>00130 <span class="keywordflow">else</span>
<a name="l00131"></a>00131 total += bytes_read;
<a name="l00132"></a>00132 }
<a name="l00133"></a>00133
<a name="l00134"></a>00134 <a class="code" href="group__DBusSysdepsUnix.html#gac448479a1674e3b86cee9a4bdc7eba03" title="Closes a file descriptor.">_dbus_close</a> (fd, <a class="code" href="group__DBusMacros.html#ga070d2ce7b6bb7e5c05602aa8c308d0c4" title="A null pointer, defined appropriately for C or C++.">NULL</a>);
<a name="l00135"></a>00135 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#gaa8cecfc5c5c054d2875c03e77b7be15d" title="Expands to "1".">TRUE</a>;
<a name="l00136"></a>00136 }
<a name="l00137"></a>00137 <span class="keywordflow">else</span> <span class="keywordflow">if</span> (sb.st_size != 0)
<a name="l00138"></a>00138 {
<a name="l00139"></a>00139 _dbus_verbose (<span class="stringliteral">"Can only open regular files at the moment.\n"</span>);
<a name="l00140"></a>00140 <a class="code" href="group__DBusErrors.html#ga89d2ad4bde21f9e0057fac07a79885e3" title="Assigns an error name and message to a DBusError.">dbus_set_error</a> (error, <a class="code" href="group__DBusProtocol.html#gabb62fd6340d0787fbd56ff8dd2f326c7" title="A generic error; "something went wrong" - see the error message for more.">DBUS_ERROR_FAILED</a>,
<a name="l00141"></a>00141 <span class="stringliteral">"\"%s\" is not a regular file"</span>,
<a name="l00142"></a>00142 filename_c);
<a name="l00143"></a>00143 <a class="code" href="group__DBusSysdepsUnix.html#gac448479a1674e3b86cee9a4bdc7eba03" title="Closes a file descriptor.">_dbus_close</a> (fd, <a class="code" href="group__DBusMacros.html#ga070d2ce7b6bb7e5c05602aa8c308d0c4" title="A null pointer, defined appropriately for C or C++.">NULL</a>);
<a name="l00144"></a>00144 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#gaa93f0eb578d23995850d61f7d61c55c1" title="Expands to "0".">FALSE</a>;
<a name="l00145"></a>00145 }
<a name="l00146"></a>00146 <span class="keywordflow">else</span>
<a name="l00147"></a>00147 {
<a name="l00148"></a>00148 <a class="code" href="group__DBusSysdepsUnix.html#gac448479a1674e3b86cee9a4bdc7eba03" title="Closes a file descriptor.">_dbus_close</a> (fd, <a class="code" href="group__DBusMacros.html#ga070d2ce7b6bb7e5c05602aa8c308d0c4" title="A null pointer, defined appropriately for C or C++.">NULL</a>);
<a name="l00149"></a>00149 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#gaa8cecfc5c5c054d2875c03e77b7be15d" title="Expands to "1".">TRUE</a>;
<a name="l00150"></a>00150 }
<a name="l00151"></a>00151 }
<a name="l00152"></a>00152
<a name="l00163"></a>00163 <a class="code" href="group__DBusTypes.html#ga39c9cb0f3a2a8ad6f55cc4855d035349" title="A boolean, valid values are TRUE and FALSE.">dbus_bool_t</a>
<a name="l00164"></a><a class="code" href="group__DBusFile.html#ga2adba123fde18c9d1d9eaf1347980d57">00164</a> <a class="code" href="group__DBusFile.html#ga2adba123fde18c9d1d9eaf1347980d57" title="Writes a string out to a file.">_dbus_string_save_to_file</a> (<span class="keyword">const</span> <a class="code" href="structDBusString.html">DBusString</a> *str,
<a name="l00165"></a>00165 <span class="keyword">const</span> <a class="code" href="structDBusString.html">DBusString</a> *filename,
<a name="l00166"></a>00166 <a class="code" href="group__DBusTypes.html#ga39c9cb0f3a2a8ad6f55cc4855d035349" title="A boolean, valid values are TRUE and FALSE.">dbus_bool_t</a> world_readable,
<a name="l00167"></a>00167 <a class="code" href="structDBusError.html" title="Object representing an exception.">DBusError</a> *error)
<a name="l00168"></a>00168 {
<a name="l00169"></a>00169 <span class="keywordtype">int</span> fd;
<a name="l00170"></a>00170 <span class="keywordtype">int</span> bytes_to_write;
<a name="l00171"></a>00171 <span class="keyword">const</span> <span class="keywordtype">char</span> *filename_c;
<a name="l00172"></a>00172 <a class="code" href="structDBusString.html">DBusString</a> tmp_filename;
<a name="l00173"></a>00173 <span class="keyword">const</span> <span class="keywordtype">char</span> *tmp_filename_c;
<a name="l00174"></a>00174 <span class="keywordtype">int</span> total;
<a name="l00175"></a>00175 <a class="code" href="group__DBusTypes.html#ga39c9cb0f3a2a8ad6f55cc4855d035349" title="A boolean, valid values are TRUE and FALSE.">dbus_bool_t</a> need_unlink;
<a name="l00176"></a>00176 <a class="code" href="group__DBusTypes.html#ga39c9cb0f3a2a8ad6f55cc4855d035349" title="A boolean, valid values are TRUE and FALSE.">dbus_bool_t</a> retval;
<a name="l00177"></a>00177
<a name="l00178"></a>00178 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
<a name="l00179"></a>00179
<a name="l00180"></a>00180 fd = -1;
<a name="l00181"></a>00181 retval = <a class="code" href="group__DBusMacros.html#gaa93f0eb578d23995850d61f7d61c55c1" title="Expands to "0".">FALSE</a>;
<a name="l00182"></a>00182 need_unlink = <a class="code" href="group__DBusMacros.html#gaa93f0eb578d23995850d61f7d61c55c1" title="Expands to "0".">FALSE</a>;
<a name="l00183"></a>00183
<a name="l00184"></a>00184 <span class="keywordflow">if</span> (!<a class="code" href="group__DBusString.html#ga348252317f7bb8ac43529972945830ae" title="Initializes a string.">_dbus_string_init</a> (&tmp_filename))
<a name="l00185"></a>00185 {
<a name="l00186"></a>00186 <a class="code" href="group__DBusErrors.html#ga89d2ad4bde21f9e0057fac07a79885e3" title="Assigns an error name and message to a DBusError.">dbus_set_error</a> (error, <a class="code" href="group__DBusProtocol.html#gac32eaf0b92f798307853cd4fe0cf11c2" title="There was not enough memory to complete an operation.">DBUS_ERROR_NO_MEMORY</a>, <a class="code" href="group__DBusMacros.html#ga070d2ce7b6bb7e5c05602aa8c308d0c4" title="A null pointer, defined appropriately for C or C++.">NULL</a>);
<a name="l00187"></a>00187 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#gaa93f0eb578d23995850d61f7d61c55c1" title="Expands to "0".">FALSE</a>;
<a name="l00188"></a>00188 }
<a name="l00189"></a>00189
<a name="l00190"></a>00190 <span class="keywordflow">if</span> (!<a class="code" href="group__DBusString.html#ga3c10f0d1bcaa3b450025b9c6a8b901d7" title="Like _dbus_string_move(), but does not delete the section of the source string that's copied to the d...">_dbus_string_copy</a> (filename, 0, &tmp_filename, 0))
<a name="l00191"></a>00191 {
<a name="l00192"></a>00192 <a class="code" href="group__DBusErrors.html#ga89d2ad4bde21f9e0057fac07a79885e3" title="Assigns an error name and message to a DBusError.">dbus_set_error</a> (error, <a class="code" href="group__DBusProtocol.html#gac32eaf0b92f798307853cd4fe0cf11c2" title="There was not enough memory to complete an operation.">DBUS_ERROR_NO_MEMORY</a>, <a class="code" href="group__DBusMacros.html#ga070d2ce7b6bb7e5c05602aa8c308d0c4" title="A null pointer, defined appropriately for C or C++.">NULL</a>);
<a name="l00193"></a>00193 <a class="code" href="group__DBusString.html#ga781ca91acda49a834dce7d0ed0eef212" title="Frees a string created by _dbus_string_init().">_dbus_string_free</a> (&tmp_filename);
<a name="l00194"></a>00194 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#gaa93f0eb578d23995850d61f7d61c55c1" title="Expands to "0".">FALSE</a>;
<a name="l00195"></a>00195 }
<a name="l00196"></a>00196
<a name="l00197"></a>00197 <span class="keywordflow">if</span> (!<a class="code" href="group__DBusString.html#ga100c5ce0696822c5a4cfbdfaba674d96" title="Appends a nul-terminated C-style string to a DBusString.">_dbus_string_append</a> (&tmp_filename, <span class="stringliteral">"."</span>))
<a name="l00198"></a>00198 {
<a name="l00199"></a>00199 <a class="code" href="group__DBusErrors.html#ga89d2ad4bde21f9e0057fac07a79885e3" title="Assigns an error name and message to a DBusError.">dbus_set_error</a> (error, <a class="code" href="group__DBusProtocol.html#gac32eaf0b92f798307853cd4fe0cf11c2" title="There was not enough memory to complete an operation.">DBUS_ERROR_NO_MEMORY</a>, <a class="code" href="group__DBusMacros.html#ga070d2ce7b6bb7e5c05602aa8c308d0c4" title="A null pointer, defined appropriately for C or C++.">NULL</a>);
<a name="l00200"></a>00200 <a class="code" href="group__DBusString.html#ga781ca91acda49a834dce7d0ed0eef212" title="Frees a string created by _dbus_string_init().">_dbus_string_free</a> (&tmp_filename);
<a name="l00201"></a>00201 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#gaa93f0eb578d23995850d61f7d61c55c1" title="Expands to "0".">FALSE</a>;
<a name="l00202"></a>00202 }
<a name="l00203"></a>00203
<a name="l00204"></a>00204 <span class="preprocessor">#define N_TMP_FILENAME_RANDOM_BYTES 8</span>
<a name="l00205"></a>00205 <span class="preprocessor"></span> <span class="keywordflow">if</span> (!<a class="code" href="group__DBusInternalsUtils.html#ga709ce349c6ee05263850444fb4e0177d" title="Generates the given number of random bytes, where the bytes are chosen from the alphanumeric ASCII su...">_dbus_generate_random_ascii</a> (&tmp_filename, N_TMP_FILENAME_RANDOM_BYTES))
<a name="l00206"></a>00206 {
<a name="l00207"></a>00207 <a class="code" href="group__DBusErrors.html#ga89d2ad4bde21f9e0057fac07a79885e3" title="Assigns an error name and message to a DBusError.">dbus_set_error</a> (error, <a class="code" href="group__DBusProtocol.html#gac32eaf0b92f798307853cd4fe0cf11c2" title="There was not enough memory to complete an operation.">DBUS_ERROR_NO_MEMORY</a>, <a class="code" href="group__DBusMacros.html#ga070d2ce7b6bb7e5c05602aa8c308d0c4" title="A null pointer, defined appropriately for C or C++.">NULL</a>);
<a name="l00208"></a>00208 <a class="code" href="group__DBusString.html#ga781ca91acda49a834dce7d0ed0eef212" title="Frees a string created by _dbus_string_init().">_dbus_string_free</a> (&tmp_filename);
<a name="l00209"></a>00209 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#gaa93f0eb578d23995850d61f7d61c55c1" title="Expands to "0".">FALSE</a>;
<a name="l00210"></a>00210 }
<a name="l00211"></a>00211
<a name="l00212"></a>00212 filename_c = <a class="code" href="group__DBusString.html#ga33e20241ae7d784624f97d89b1a0539e" title="Gets the raw character buffer from a const string.">_dbus_string_get_const_data</a> (filename);
<a name="l00213"></a>00213 tmp_filename_c = <a class="code" href="group__DBusString.html#ga33e20241ae7d784624f97d89b1a0539e" title="Gets the raw character buffer from a const string.">_dbus_string_get_const_data</a> (&tmp_filename);
<a name="l00214"></a>00214
<a name="l00215"></a>00215 fd = open (tmp_filename_c, O_WRONLY | O_BINARY | O_EXCL | O_CREAT,
<a name="l00216"></a>00216 world_readable ? 0644 : 0600);
<a name="l00217"></a>00217 <span class="keywordflow">if</span> (fd < 0)
<a name="l00218"></a>00218 {
<a name="l00219"></a>00219 <a class="code" href="group__DBusErrors.html#ga89d2ad4bde21f9e0057fac07a79885e3" title="Assigns an error name and message to a DBusError.">dbus_set_error</a> (error, <a class="code" href="group__DBusInternalsUtils.html#ga2212aa0e5732257598a6597748c658e4" title="Converts a UNIX errno, or Windows errno or WinSock error value into a DBusError name.">_dbus_error_from_errno</a> (errno),
<a name="l00220"></a>00220 <span class="stringliteral">"Could not create %s: %s"</span>, tmp_filename_c,
<a name="l00221"></a>00221 _dbus_strerror (errno));
<a name="l00222"></a>00222 <span class="keywordflow">goto</span> out;
<a name="l00223"></a>00223 }
<a name="l00224"></a>00224 <span class="keywordflow">if</span> (world_readable)
<a name="l00225"></a>00225 {
<a name="l00226"></a>00226 <span class="comment">/* Ensure the file is world readable even in the presence of</span>
<a name="l00227"></a>00227 <span class="comment"> * possibly restrictive umasks;</span>
<a name="l00228"></a>00228 <span class="comment"> * see http://lists.freedesktop.org/archives/dbus/2010-September/013367.html</span>
<a name="l00229"></a>00229 <span class="comment"> */</span>
<a name="l00230"></a>00230 <span class="keywordflow">if</span> (fchmod (fd, 0644) < 0)
<a name="l00231"></a>00231 {
<a name="l00232"></a>00232 <a class="code" href="group__DBusErrors.html#ga89d2ad4bde21f9e0057fac07a79885e3" title="Assigns an error name and message to a DBusError.">dbus_set_error</a> (error, <a class="code" href="group__DBusInternalsUtils.html#ga2212aa0e5732257598a6597748c658e4" title="Converts a UNIX errno, or Windows errno or WinSock error value into a DBusError name.">_dbus_error_from_errno</a> (errno),
<a name="l00233"></a>00233 <span class="stringliteral">"Could not chmod %s: %s"</span>, tmp_filename_c,
<a name="l00234"></a>00234 _dbus_strerror (errno));
<a name="l00235"></a>00235 <span class="keywordflow">goto</span> out;
<a name="l00236"></a>00236 }
<a name="l00237"></a>00237 }
<a name="l00238"></a>00238
<a name="l00239"></a>00239 _dbus_verbose (<span class="stringliteral">"tmp file fd %d opened\n"</span>, fd);
<a name="l00240"></a>00240
<a name="l00241"></a>00241 need_unlink = <a class="code" href="group__DBusMacros.html#gaa8cecfc5c5c054d2875c03e77b7be15d" title="Expands to "1".">TRUE</a>;
<a name="l00242"></a>00242
<a name="l00243"></a>00243 total = 0;
<a name="l00244"></a>00244 bytes_to_write = <a class="code" href="group__DBusString.html#gaa5136e6fd2c5188f4b88de7863369c6d" title="Gets the length of a string (not including nul termination).">_dbus_string_get_length</a> (str);
<a name="l00245"></a>00245
<a name="l00246"></a>00246 <span class="keywordflow">while</span> (total < bytes_to_write)
<a name="l00247"></a>00247 {
<a name="l00248"></a>00248 <span class="keywordtype">int</span> bytes_written;
<a name="l00249"></a>00249
<a name="l00250"></a>00250 bytes_written = <a class="code" href="group__DBusSysdepsUnix.html#ga3a789bcdfd3d468c2bf917fa5081b27f" title="Thin wrapper around the write() system call that writes a part of a DBusString and handles EINTR for ...">_dbus_write</a> (fd, str, total,
<a name="l00251"></a>00251 bytes_to_write - total);
<a name="l00252"></a>00252
<a name="l00253"></a>00253 <span class="keywordflow">if</span> (bytes_written <= 0)
<a name="l00254"></a>00254 {
<a name="l00255"></a>00255 <a class="code" href="group__DBusErrors.html#ga89d2ad4bde21f9e0057fac07a79885e3" title="Assigns an error name and message to a DBusError.">dbus_set_error</a> (error, <a class="code" href="group__DBusInternalsUtils.html#ga2212aa0e5732257598a6597748c658e4" title="Converts a UNIX errno, or Windows errno or WinSock error value into a DBusError name.">_dbus_error_from_errno</a> (errno),
<a name="l00256"></a>00256 <span class="stringliteral">"Could not write to %s: %s"</span>, tmp_filename_c,
<a name="l00257"></a>00257 _dbus_strerror (errno));
<a name="l00258"></a>00258
<a name="l00259"></a>00259 <span class="keywordflow">goto</span> out;
<a name="l00260"></a>00260 }
<a name="l00261"></a>00261
<a name="l00262"></a>00262 total += bytes_written;
<a name="l00263"></a>00263 }
<a name="l00264"></a>00264
<a name="l00265"></a>00265 <span class="keywordflow">if</span> (fsync(fd))
<a name="l00266"></a>00266 {
<a name="l00267"></a>00267 <a class="code" href="group__DBusErrors.html#ga89d2ad4bde21f9e0057fac07a79885e3" title="Assigns an error name and message to a DBusError.">dbus_set_error</a> (error, <a class="code" href="group__DBusInternalsUtils.html#ga2212aa0e5732257598a6597748c658e4" title="Converts a UNIX errno, or Windows errno or WinSock error value into a DBusError name.">_dbus_error_from_errno</a> (errno),
<a name="l00268"></a>00268 <span class="stringliteral">"Could not synchronize file %s: %s"</span>,
<a name="l00269"></a>00269 tmp_filename_c, _dbus_strerror (errno));
<a name="l00270"></a>00270
<a name="l00271"></a>00271 <span class="keywordflow">goto</span> out;
<a name="l00272"></a>00272 }
<a name="l00273"></a>00273
<a name="l00274"></a>00274 <span class="keywordflow">if</span> (!<a class="code" href="group__DBusSysdepsUnix.html#gac448479a1674e3b86cee9a4bdc7eba03" title="Closes a file descriptor.">_dbus_close</a> (fd, <a class="code" href="group__DBusMacros.html#ga070d2ce7b6bb7e5c05602aa8c308d0c4" title="A null pointer, defined appropriately for C or C++.">NULL</a>))
<a name="l00275"></a>00275 {
<a name="l00276"></a>00276 <a class="code" href="group__DBusErrors.html#ga89d2ad4bde21f9e0057fac07a79885e3" title="Assigns an error name and message to a DBusError.">dbus_set_error</a> (error, <a class="code" href="group__DBusInternalsUtils.html#ga2212aa0e5732257598a6597748c658e4" title="Converts a UNIX errno, or Windows errno or WinSock error value into a DBusError name.">_dbus_error_from_errno</a> (errno),
<a name="l00277"></a>00277 <span class="stringliteral">"Could not close file %s: %s"</span>,
<a name="l00278"></a>00278 tmp_filename_c, _dbus_strerror (errno));
<a name="l00279"></a>00279
<a name="l00280"></a>00280 <span class="keywordflow">goto</span> out;
<a name="l00281"></a>00281 }
<a name="l00282"></a>00282
<a name="l00283"></a>00283 fd = -1;
<a name="l00284"></a>00284
<a name="l00285"></a>00285 <span class="keywordflow">if</span> (rename (tmp_filename_c, filename_c) < 0)
<a name="l00286"></a>00286 {
<a name="l00287"></a>00287 <a class="code" href="group__DBusErrors.html#ga89d2ad4bde21f9e0057fac07a79885e3" title="Assigns an error name and message to a DBusError.">dbus_set_error</a> (error, <a class="code" href="group__DBusInternalsUtils.html#ga2212aa0e5732257598a6597748c658e4" title="Converts a UNIX errno, or Windows errno or WinSock error value into a DBusError name.">_dbus_error_from_errno</a> (errno),
<a name="l00288"></a>00288 <span class="stringliteral">"Could not rename %s to %s: %s"</span>,
<a name="l00289"></a>00289 tmp_filename_c, filename_c,
<a name="l00290"></a>00290 _dbus_strerror (errno));
<a name="l00291"></a>00291
<a name="l00292"></a>00292 <span class="keywordflow">goto</span> out;
<a name="l00293"></a>00293 }
<a name="l00294"></a>00294
<a name="l00295"></a>00295 need_unlink = <a class="code" href="group__DBusMacros.html#gaa93f0eb578d23995850d61f7d61c55c1" title="Expands to "0".">FALSE</a>;
<a name="l00296"></a>00296
<a name="l00297"></a>00297 retval = <a class="code" href="group__DBusMacros.html#gaa8cecfc5c5c054d2875c03e77b7be15d" title="Expands to "1".">TRUE</a>;
<a name="l00298"></a>00298
<a name="l00299"></a>00299 out:
<a name="l00300"></a>00300 <span class="comment">/* close first, then unlink, to prevent ".nfs34234235" garbage</span>
<a name="l00301"></a>00301 <span class="comment"> * files</span>
<a name="l00302"></a>00302 <span class="comment"> */</span>
<a name="l00303"></a>00303
<a name="l00304"></a>00304 <span class="keywordflow">if</span> (fd >= 0)
<a name="l00305"></a>00305 <a class="code" href="group__DBusSysdepsUnix.html#gac448479a1674e3b86cee9a4bdc7eba03" title="Closes a file descriptor.">_dbus_close</a> (fd, <a class="code" href="group__DBusMacros.html#ga070d2ce7b6bb7e5c05602aa8c308d0c4" title="A null pointer, defined appropriately for C or C++.">NULL</a>);
<a name="l00306"></a>00306
<a name="l00307"></a>00307 <span class="keywordflow">if</span> (need_unlink && unlink (tmp_filename_c) < 0)
<a name="l00308"></a>00308 _dbus_verbose (<span class="stringliteral">"Failed to unlink temp file %s: %s\n"</span>,
<a name="l00309"></a>00309 tmp_filename_c, _dbus_strerror (errno));
<a name="l00310"></a>00310
<a name="l00311"></a>00311 <a class="code" href="group__DBusString.html#ga781ca91acda49a834dce7d0ed0eef212" title="Frees a string created by _dbus_string_init().">_dbus_string_free</a> (&tmp_filename);
<a name="l00312"></a>00312
<a name="l00313"></a>00313 <span class="keywordflow">if</span> (!retval)
<a name="l00314"></a>00314 _DBUS_ASSERT_ERROR_IS_SET (error);
<a name="l00315"></a>00315
<a name="l00316"></a>00316 <span class="keywordflow">return</span> retval;
<a name="l00317"></a>00317 }
<a name="l00318"></a>00318
<a name="l00325"></a>00325 <a class="code" href="group__DBusTypes.html#ga39c9cb0f3a2a8ad6f55cc4855d035349" title="A boolean, valid values are TRUE and FALSE.">dbus_bool_t</a>
<a name="l00326"></a><a class="code" href="group__DBusFile.html#ga7c83e2e20811330d1d1b2f6249dbe66c">00326</a> <a class="code" href="group__DBusFile.html#ga7c83e2e20811330d1d1b2f6249dbe66c" title="Makes the file readable by every user in the system.">_dbus_make_file_world_readable</a>(<span class="keyword">const</span> <a class="code" href="structDBusString.html">DBusString</a> *filename,
<a name="l00327"></a>00327 <a class="code" href="structDBusError.html" title="Object representing an exception.">DBusError</a> *error)
<a name="l00328"></a>00328 {
<a name="l00329"></a>00329 <span class="keyword">const</span> <span class="keywordtype">char</span> *filename_c;
<a name="l00330"></a>00330
<a name="l00331"></a>00331 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
<a name="l00332"></a>00332
<a name="l00333"></a>00333 filename_c = <a class="code" href="group__DBusString.html#ga33e20241ae7d784624f97d89b1a0539e" title="Gets the raw character buffer from a const string.">_dbus_string_get_const_data</a> (filename);
<a name="l00334"></a>00334 <span class="keywordflow">if</span> (chmod (filename_c, 0644) == -1)
<a name="l00335"></a>00335 {
<a name="l00336"></a>00336 <a class="code" href="group__DBusErrors.html#ga89d2ad4bde21f9e0057fac07a79885e3" title="Assigns an error name and message to a DBusError.">dbus_set_error</a> (error,
<a name="l00337"></a>00337 <a class="code" href="group__DBusProtocol.html#gabb62fd6340d0787fbd56ff8dd2f326c7" title="A generic error; "something went wrong" - see the error message for more.">DBUS_ERROR_FAILED</a>,
<a name="l00338"></a>00338 <span class="stringliteral">"Could not change permissions of file %s: %s\n"</span>,
<a name="l00339"></a>00339 filename_c,
<a name="l00340"></a>00340 _dbus_strerror (errno));
<a name="l00341"></a>00341 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#gaa93f0eb578d23995850d61f7d61c55c1" title="Expands to "0".">FALSE</a>;
<a name="l00342"></a>00342 }
<a name="l00343"></a>00343 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#gaa8cecfc5c5c054d2875c03e77b7be15d" title="Expands to "1".">TRUE</a>;
<a name="l00344"></a>00344 }
<a name="l00345"></a>00345
<a name="l00352"></a>00352 <a class="code" href="group__DBusTypes.html#ga39c9cb0f3a2a8ad6f55cc4855d035349" title="A boolean, valid values are TRUE and FALSE.">dbus_bool_t</a>
<a name="l00353"></a><a class="code" href="group__DBusFile.html#ga22665c6d5899c913e03930f90d144f46">00353</a> <a class="code" href="group__DBusFile.html#ga22665c6d5899c913e03930f90d144f46" title="Creates the given file, failing if the file already exists.">_dbus_create_file_exclusively</a> (<span class="keyword">const</span> <a class="code" href="structDBusString.html">DBusString</a> *filename,
<a name="l00354"></a>00354 <a class="code" href="structDBusError.html" title="Object representing an exception.">DBusError</a> *error)
<a name="l00355"></a>00355 {
<a name="l00356"></a>00356 <span class="keywordtype">int</span> fd;
<a name="l00357"></a>00357 <span class="keyword">const</span> <span class="keywordtype">char</span> *filename_c;
<a name="l00358"></a>00358
<a name="l00359"></a>00359 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
<a name="l00360"></a>00360
<a name="l00361"></a>00361 filename_c = <a class="code" href="group__DBusString.html#ga33e20241ae7d784624f97d89b1a0539e" title="Gets the raw character buffer from a const string.">_dbus_string_get_const_data</a> (filename);
<a name="l00362"></a>00362
<a name="l00363"></a>00363 fd = open (filename_c, O_WRONLY | O_BINARY | O_EXCL | O_CREAT,
<a name="l00364"></a>00364 0600);
<a name="l00365"></a>00365 <span class="keywordflow">if</span> (fd < 0)
<a name="l00366"></a>00366 {
<a name="l00367"></a>00367 <a class="code" href="group__DBusErrors.html#ga89d2ad4bde21f9e0057fac07a79885e3" title="Assigns an error name and message to a DBusError.">dbus_set_error</a> (error,
<a name="l00368"></a>00368 <a class="code" href="group__DBusProtocol.html#gabb62fd6340d0787fbd56ff8dd2f326c7" title="A generic error; "something went wrong" - see the error message for more.">DBUS_ERROR_FAILED</a>,
<a name="l00369"></a>00369 <span class="stringliteral">"Could not create file %s: %s\n"</span>,
<a name="l00370"></a>00370 filename_c,
<a name="l00371"></a>00371 _dbus_strerror (errno));
<a name="l00372"></a>00372 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#gaa93f0eb578d23995850d61f7d61c55c1" title="Expands to "0".">FALSE</a>;
<a name="l00373"></a>00373 }
<a name="l00374"></a>00374
<a name="l00375"></a>00375 _dbus_verbose (<span class="stringliteral">"exclusive file fd %d opened\n"</span>, fd);
<a name="l00376"></a>00376
<a name="l00377"></a>00377 <span class="keywordflow">if</span> (!<a class="code" href="group__DBusSysdepsUnix.html#gac448479a1674e3b86cee9a4bdc7eba03" title="Closes a file descriptor.">_dbus_close</a> (fd, <a class="code" href="group__DBusMacros.html#ga070d2ce7b6bb7e5c05602aa8c308d0c4" title="A null pointer, defined appropriately for C or C++.">NULL</a>))
<a name="l00378"></a>00378 {
<a name="l00379"></a>00379 <a class="code" href="group__DBusErrors.html#ga89d2ad4bde21f9e0057fac07a79885e3" title="Assigns an error name and message to a DBusError.">dbus_set_error</a> (error,
<a name="l00380"></a>00380 <a class="code" href="group__DBusProtocol.html#gabb62fd6340d0787fbd56ff8dd2f326c7" title="A generic error; "something went wrong" - see the error message for more.">DBUS_ERROR_FAILED</a>,
<a name="l00381"></a>00381 <span class="stringliteral">"Could not close file %s: %s\n"</span>,
<a name="l00382"></a>00382 filename_c,
<a name="l00383"></a>00383 _dbus_strerror (errno));
<a name="l00384"></a>00384 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#gaa93f0eb578d23995850d61f7d61c55c1" title="Expands to "0".">FALSE</a>;
<a name="l00385"></a>00385 }
<a name="l00386"></a>00386
<a name="l00387"></a>00387 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#gaa8cecfc5c5c054d2875c03e77b7be15d" title="Expands to "1".">TRUE</a>;
<a name="l00388"></a>00388 }
<a name="l00389"></a>00389
<a name="l00398"></a>00398 <a class="code" href="group__DBusTypes.html#ga39c9cb0f3a2a8ad6f55cc4855d035349" title="A boolean, valid values are TRUE and FALSE.">dbus_bool_t</a>
<a name="l00399"></a><a class="code" href="group__DBusFile.html#ga4d4936493cddac47b6e7e4ab3f390627">00399</a> <a class="code" href="group__DBusFile.html#ga4d4936493cddac47b6e7e4ab3f390627" title="Deletes the given file.">_dbus_delete_file</a> (<span class="keyword">const</span> <a class="code" href="structDBusString.html">DBusString</a> *filename,
<a name="l00400"></a>00400 <a class="code" href="structDBusError.html" title="Object representing an exception.">DBusError</a> *error)
<a name="l00401"></a>00401 {
<a name="l00402"></a>00402 <span class="keyword">const</span> <span class="keywordtype">char</span> *filename_c;
<a name="l00403"></a>00403
<a name="l00404"></a>00404 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
<a name="l00405"></a>00405
<a name="l00406"></a>00406 filename_c = <a class="code" href="group__DBusString.html#ga33e20241ae7d784624f97d89b1a0539e" title="Gets the raw character buffer from a const string.">_dbus_string_get_const_data</a> (filename);
<a name="l00407"></a>00407
<a name="l00408"></a>00408 <span class="keywordflow">if</span> (unlink (filename_c) < 0)
<a name="l00409"></a>00409 {
<a name="l00410"></a>00410 <a class="code" href="group__DBusErrors.html#ga89d2ad4bde21f9e0057fac07a79885e3" title="Assigns an error name and message to a DBusError.">dbus_set_error</a> (error, <a class="code" href="group__DBusProtocol.html#gabb62fd6340d0787fbd56ff8dd2f326c7" title="A generic error; "something went wrong" - see the error message for more.">DBUS_ERROR_FAILED</a>,
<a name="l00411"></a>00411 <span class="stringliteral">"Failed to delete file %s: %s\n"</span>,
<a name="l00412"></a>00412 filename_c, _dbus_strerror (errno));
<a name="l00413"></a>00413 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#gaa93f0eb578d23995850d61f7d61c55c1" title="Expands to "0".">FALSE</a>;
<a name="l00414"></a>00414 }
<a name="l00415"></a>00415 <span class="keywordflow">else</span>
<a name="l00416"></a>00416 <span class="keywordflow">return</span> <a class="code" href="group__DBusMacros.html#gaa8cecfc5c5c054d2875c03e77b7be15d" title="Expands to "1".">TRUE</a>;
<a name="l00417"></a>00417 }
</pre></div></div><!-- contents -->
<hr class="footer"/><address class="footer"><small>
Generated on Thu Mar 3 2016 17:50:30 for D-Bus by  <a href="http://www.doxygen.org/index.html">
<img class="footer" src="doxygen.png" alt="doxygen"/>
</a> 1.7.6.1
</small></address>
</body>
</html>