plugin/qlibrary_unix.cpp

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1/**************************************************************************** -
2** -
3** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies). -
4** Contact: http://www.qt-project.org/legal -
5** -
6** This file is part of the QtCore module of the Qt Toolkit. -
7** -
8** $QT_BEGIN_LICENSE:LGPL$ -
9** Commercial License Usage -
10** Licensees holding valid commercial Qt licenses may use this file in -
11** accordance with the commercial license agreement provided with the -
12** Software or, alternatively, in accordance with the terms contained in -
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15** use the contact form at http://qt.digia.com/contact-us. -
16** -
17** GNU Lesser General Public License Usage -
18** Alternatively, this file may be used under the terms of the GNU Lesser -
19** General Public License version 2.1 as published by the Free Software -
20** Foundation and appearing in the file LICENSE.LGPL included in the -
21** packaging of this file. Please review the following information to -
22** ensure the GNU Lesser General Public License version 2.1 requirements -
23** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. -
24** -
25** In addition, as a special exception, Digia gives you certain additional -
26** rights. These rights are described in the Digia Qt LGPL Exception -
27** version 1.1, included in the file LGPL_EXCEPTION.txt in this package. -
28** -
29** GNU General Public License Usage -
30** Alternatively, this file may be used under the terms of the GNU -
31** General Public License version 3.0 as published by the Free Software -
32** Foundation and appearing in the file LICENSE.GPL included in the -
33** packaging of this file. Please review the following information to -
34** ensure the GNU General Public License version 3.0 requirements will be -
35** met: http://www.gnu.org/copyleft/gpl.html. -
36** -
37** -
38** $QT_END_LICENSE$ -
39** -
40****************************************************************************/ -
41 -
42#include "qplatformdefs.h" -
43 -
44#include <qfile.h> -
45#include "qlibrary_p.h" -
46#include <qcoreapplication.h> -
47#include <private/qfilesystementry_p.h> -
48 -
49#ifndef QT_NO_LIBRARY -
50 -
51#ifdef Q_OS_MAC -
52# include <private/qcore_mac_p.h> -
53#endif -
54 -
55#if defined(QT_AOUT_UNDERSCORE) -
56#include <string.h> -
57#endif -
58 -
59#if defined(Q_OS_VXWORKS) || defined (Q_OS_NACL) -
60#define QT_NO_DYNAMIC_LIBRARY -
61#endif -
62 -
63QT_BEGIN_NAMESPACE -
64 -
65#if !defined(QT_HPUX_LD) && !defined(QT_NO_DYNAMIC_LIBRARY) -
66QT_BEGIN_INCLUDE_NAMESPACE -
67#include <dlfcn.h> -
68QT_END_INCLUDE_NAMESPACE -
69#endif -
70 -
71static QString qdlerror() -
72{ -
73#if defined(QT_NO_DYNAMIC_LIBRARY) -
74 const char *err = "This platform does not support dynamic libraries."; -
75#elif !defined(QT_HPUX_LD) -
76 const char *err = dlerror();
executed (the execution status of this line is deduced): const char *err = dlerror();
-
77#else -
78 const char *err = strerror(errno); -
79#endif -
80 return err ? QLatin1Char('(') + QString::fromLocal8Bit(err) + QLatin1Char(')'): QString();
executed: return err ? QLatin1Char('(') + QString::fromLocal8Bit(err) + QLatin1Char(')'): QString();
Execution Count:55
55
81} -
82 -
83QStringList QLibraryPrivate::suffixes_sys(const QString& fullVersion) -
84{ -
85 QStringList suffixes;
executed (the execution status of this line is deduced): QStringList suffixes;
-
86#if defined(Q_OS_HPUX) -
87 // according to -
88 // http://docs.hp.com/en/B2355-90968/linkerdifferencesiapa.htm -
89 -
90 // In PA-RISC (PA-32 and PA-64) shared libraries are suffixed -
91 // with .sl. In IPF (32-bit and 64-bit), the shared libraries -
92 // are suffixed with .so. For compatibility, the IPF linker -
93 // also supports the .sl suffix. -
94 -
95 // But since we don't know if we are built on HPUX or HPUXi, -
96 // we support both .sl (and .<version>) and .so suffixes but -
97 // .so is preferred. -
98# if defined(__ia64) -
99 if (!fullVersion.isEmpty()) { -
100 suffixes << QString::fromLatin1(".so.%1").arg(fullVersion); -
101 } else { -
102 suffixes << QLatin1String(".so"); -
103 } -
104# endif -
105 if (!fullVersion.isEmpty()) { -
106 suffixes << QString::fromLatin1(".sl.%1").arg(fullVersion); -
107 suffixes << QString::fromLatin1(".%1").arg(fullVersion); -
108 } else { -
109 suffixes << QLatin1String(".sl"); -
110 } -
111#elif defined(Q_OS_AIX) -
112 suffixes << ".a"; -
113 -
114#else -
115 if (!fullVersion.isEmpty()) {
evaluated: !fullVersion.isEmpty()
TRUEFALSE
yes
Evaluation Count:55
yes
Evaluation Count:40
40-55
116 suffixes << QString::fromLatin1(".so.%1").arg(fullVersion);
executed (the execution status of this line is deduced): suffixes << QString::fromLatin1(".so.%1").arg(fullVersion);
-
117 } else {
executed: }
Execution Count:55
55
118 suffixes << QLatin1String(".so");
executed (the execution status of this line is deduced): suffixes << QLatin1String(".so");
-
119 }
executed: }
Execution Count:40
40
120#endif -
121# ifdef Q_OS_MAC -
122 if (!fullVersion.isEmpty()) { -
123 suffixes << QString::fromLatin1(".%1.bundle").arg(fullVersion); -
124 suffixes << QString::fromLatin1(".%1.dylib").arg(fullVersion); -
125 } else { -
126 suffixes << QLatin1String(".bundle") << QLatin1String(".dylib"); -
127 } -
128#endif -
129 return suffixes;
executed: return suffixes;
Execution Count:95
95
130} -
131 -
132QStringList QLibraryPrivate::prefixes_sys() -
133{ -
134 return QStringList() << QLatin1String("lib");
executed: return QStringList() << QLatin1String("lib");
Execution Count:95
95
135} -
136 -
137bool QLibraryPrivate::load_sys() -
138{ -
139 QString attempt;
executed (the execution status of this line is deduced): QString attempt;
-
140#if !defined(QT_NO_DYNAMIC_LIBRARY) -
141 QFileSystemEntry fsEntry(fileName);
executed (the execution status of this line is deduced): QFileSystemEntry fsEntry(fileName);
-
142 -
143 QString path = fsEntry.path();
executed (the execution status of this line is deduced): QString path = fsEntry.path();
-
144 QString name = fsEntry.fileName();
executed (the execution status of this line is deduced): QString name = fsEntry.fileName();
-
145 if (path == QLatin1String(".") && !fileName.startsWith(path))
evaluated: path == QLatin1String(".")
TRUEFALSE
yes
Evaluation Count:68
yes
Evaluation Count:192
partially evaluated: !fileName.startsWith(path)
TRUEFALSE
yes
Evaluation Count:68
no
Evaluation Count:0
0-192
146 path.clear();
executed: path.clear();
Execution Count:68
68
147 else -
148 path += QLatin1Char('/');
executed: path += QLatin1Char('/');
Execution Count:192
192
149 -
150 QStringList suffixes;
executed (the execution status of this line is deduced): QStringList suffixes;
-
151 QStringList prefixes;
executed (the execution status of this line is deduced): QStringList prefixes;
-
152 if (pluginState != IsAPlugin) {
evaluated: pluginState != IsAPlugin
TRUEFALSE
yes
Evaluation Count:93
yes
Evaluation Count:167
93-167
153 prefixes = prefixes_sys();
executed (the execution status of this line is deduced): prefixes = prefixes_sys();
-
154 suffixes = suffixes_sys(fullVersion);
executed (the execution status of this line is deduced): suffixes = suffixes_sys(fullVersion);
-
155 }
executed: }
Execution Count:93
93
156 int dlFlags = 0;
executed (the execution status of this line is deduced): int dlFlags = 0;
-
157#if defined(QT_HPUX_LD) -
158 dlFlags = DYNAMIC_PATH | BIND_NONFATAL; -
159 if (loadHints & QLibrary::ResolveAllSymbolsHint) { -
160 dlFlags |= BIND_IMMEDIATE; -
161 } else { -
162 dlFlags |= BIND_DEFERRED; -
163 } -
164#else -
165 if (loadHints & QLibrary::ResolveAllSymbolsHint) {
evaluated: loadHints & QLibrary::ResolveAllSymbolsHint
TRUEFALSE
yes
Evaluation Count:4
yes
Evaluation Count:256
4-256
166 dlFlags |= RTLD_NOW;
executed (the execution status of this line is deduced): dlFlags |= 0x00002;
-
167 } else {
executed: }
Execution Count:4
4
168 dlFlags |= RTLD_LAZY;
executed (the execution status of this line is deduced): dlFlags |= 0x00001;
-
169 }
executed: }
Execution Count:256
256
170 if (loadHints & QLibrary::ExportExternalSymbolsHint) {
partially evaluated: loadHints & QLibrary::ExportExternalSymbolsHint
TRUEFALSE
no
Evaluation Count:0
yes
Evaluation Count:260
0-260
171 dlFlags |= RTLD_GLOBAL;
never executed (the execution status of this line is deduced): dlFlags |= 0x00100;
-
172 }
never executed: }
0
173#if !defined(Q_OS_CYGWIN) -
174 else { -
175#if defined(Q_OS_MAC) -
176 if (QSysInfo::MacintoshVersion >= QSysInfo::MV_10_4) -
177#endif -
178 dlFlags |= RTLD_LOCAL;
executed (the execution status of this line is deduced): dlFlags |= 0;
-
179 }
executed: }
Execution Count:260
260
180#endif -
181 -
182 // Provide access to RTLD_NODELETE flag on Unix -
183 // From GNU documentation on RTLD_NODELETE: -
184 // Do not unload the library during dlclose(). Consequently, the -
185 // library's specific static variables are not reinitialized if the -
186 // library is reloaded with dlopen() at a later time. -
187#ifdef RTLD_NODELETE -
188 if (loadHints & QLibrary::PreventUnloadHint) {
partially evaluated: loadHints & QLibrary::PreventUnloadHint
TRUEFALSE
no
Evaluation Count:0
yes
Evaluation Count:260
0-260
189 dlFlags |= RTLD_NODELETE;
never executed (the execution status of this line is deduced): dlFlags |= 0x01000;
-
190 }
never executed: }
0
191#endif -
192 -
193#if defined(Q_OS_AIX) // Not sure if any other platform actually support this thing. -
194 if (loadHints & QLibrary::LoadArchiveMemberHint) { -
195 dlFlags |= RTLD_MEMBER; -
196 } -
197#endif -
198#endif // QT_HPUX_LD -
199 -
200 // If the filename is an absolute path then we want to try that first as it is most likely -
201 // what the callee wants. If we have been given a non-absolute path then lets try the -
202 // native library name first to avoid unnecessary calls to dlopen(). -
203 if (fsEntry.isAbsolute()) {
evaluated: fsEntry.isAbsolute()
TRUEFALSE
yes
Evaluation Count:192
yes
Evaluation Count:68
68-192
204 suffixes.prepend(QString());
executed (the execution status of this line is deduced): suffixes.prepend(QString());
-
205 prefixes.prepend(QString());
executed (the execution status of this line is deduced): prefixes.prepend(QString());
-
206 } else {
executed: }
Execution Count:192
192
207 suffixes.append(QString());
executed (the execution status of this line is deduced): suffixes.append(QString());
-
208 prefixes.append(QString());
executed (the execution status of this line is deduced): prefixes.append(QString());
-
209 }
executed: }
Execution Count:68
68
210 -
211 bool retry = true;
executed (the execution status of this line is deduced): bool retry = true;
-
212 for(int prefix = 0; retry && !pHnd && prefix < prefixes.size(); prefix++) {
evaluated: retry
TRUEFALSE
yes
Evaluation Count:534
yes
Evaluation Count:3
evaluated: !pHnd
TRUEFALSE
yes
Evaluation Count:281
yes
Evaluation Count:253
evaluated: prefix < prefixes.size()
TRUEFALSE
yes
Evaluation Count:277
yes
Evaluation Count:4
3-534
213 for(int suffix = 0; retry && !pHnd && suffix < suffixes.size(); suffix++) {
evaluated: retry
TRUEFALSE
yes
Evaluation Count:585
yes
Evaluation Count:3
evaluated: !pHnd
TRUEFALSE
yes
Evaluation Count:332
yes
Evaluation Count:253
evaluated: suffix < suffixes.size()
TRUEFALSE
yes
Evaluation Count:311
yes
Evaluation Count:21
3-585
214 if (!prefixes.at(prefix).isEmpty() && name.startsWith(prefixes.at(prefix)))
evaluated: !prefixes.at(prefix).isEmpty()
TRUEFALSE
yes
Evaluation Count:101
yes
Evaluation Count:210
partially evaluated: name.startsWith(prefixes.at(prefix))
TRUEFALSE
no
Evaluation Count:0
yes
Evaluation Count:101
0-210
215 continue;
never executed: continue;
0
216 if (!suffixes.at(suffix).isEmpty() && name.endsWith(suffixes.at(suffix)))
evaluated: !suffixes.at(suffix).isEmpty()
TRUEFALSE
yes
Evaluation Count:101
yes
Evaluation Count:210
partially evaluated: name.endsWith(suffixes.at(suffix))
TRUEFALSE
no
Evaluation Count:0
yes
Evaluation Count:101
0-210
217 continue;
never executed: continue;
0
218 if (loadHints & QLibrary::LoadArchiveMemberHint) {
partially evaluated: loadHints & QLibrary::LoadArchiveMemberHint
TRUEFALSE
no
Evaluation Count:0
yes
Evaluation Count:311
0-311
219 attempt = name;
never executed (the execution status of this line is deduced): attempt = name;
-
220 int lparen = attempt.indexOf(QLatin1Char('('));
never executed (the execution status of this line is deduced): int lparen = attempt.indexOf(QLatin1Char('('));
-
221 if (lparen == -1)
never evaluated: lparen == -1
0
222 lparen = attempt.count();
never executed: lparen = attempt.count();
0
223 attempt = path + prefixes.at(prefix) + attempt.insert(lparen, suffixes.at(suffix));
never executed (the execution status of this line is deduced): attempt = path + prefixes.at(prefix) + attempt.insert(lparen, suffixes.at(suffix));
-
224 } else {
never executed: }
0
225 attempt = path + prefixes.at(prefix) + name + suffixes.at(suffix);
executed (the execution status of this line is deduced): attempt = path + prefixes.at(prefix) + name + suffixes.at(suffix);
-
226 }
executed: }
Execution Count:311
311
227#if defined(QT_HPUX_LD) -
228 pHnd = (void*)shl_load(QFile::encodeName(attempt), dlFlags, 0); -
229#else -
230 pHnd = dlopen(QFile::encodeName(attempt), dlFlags);
executed (the execution status of this line is deduced): pHnd = dlopen(QFile::encodeName(attempt), dlFlags);
-
231#endif -
232 -
233 if (!pHnd && fileName.startsWith(QLatin1Char('/')) && QFile::exists(attempt)) {
evaluated: !pHnd
TRUEFALSE
yes
Evaluation Count:58
yes
Evaluation Count:253
evaluated: fileName.startsWith(QLatin1Char('/'))
TRUEFALSE
yes
Evaluation Count:54
yes
Evaluation Count:4
evaluated: QFile::exists(attempt)
TRUEFALSE
yes
Evaluation Count:3
yes
Evaluation Count:51
3-253
234 // We only want to continue if dlopen failed due to that the shared library did not exist. -
235 // However, we are only able to apply this check for absolute filenames (since they are -
236 // not influenced by the content of LD_LIBRARY_PATH, /etc/ld.so.cache, DT_RPATH etc...) -
237 // This is all because dlerror is flawed and cannot tell us the reason why it failed. -
238 retry = false;
executed (the execution status of this line is deduced): retry = false;
-
239 }
executed: }
Execution Count:3
3
240 }
executed: }
Execution Count:311
311
241 }
executed: }
Execution Count:277
277
242 -
243#ifdef Q_OS_MAC -
244 if (!pHnd) { -
245 QByteArray utf8Bundle = fileName.toUtf8(); -
246 QCFType<CFURLRef> bundleUrl = CFURLCreateFromFileSystemRepresentation(NULL, reinterpret_cast<const UInt8*>(utf8Bundle.data()), utf8Bundle.length(), true); -
247 QCFType<CFBundleRef> bundle = CFBundleCreate(NULL, bundleUrl); -
248 if(bundle) { -
249 QCFType<CFURLRef> url = CFBundleCopyExecutableURL(bundle); -
250 char executableFile[FILENAME_MAX]; -
251 CFURLGetFileSystemRepresentation(url, true, reinterpret_cast<UInt8*>(executableFile), FILENAME_MAX); -
252 attempt = QString::fromUtf8(executableFile); -
253 pHnd = dlopen(QFile::encodeName(attempt), dlFlags); -
254 } -
255 } -
256#endif -
257#endif // QT_NO_DYNAMIC_LIBRARY -
258 if (!pHnd) {
evaluated: !pHnd
TRUEFALSE
yes
Evaluation Count:7
yes
Evaluation Count:253
7-253
259 errorString = QLibrary::tr("Cannot load library %1: %2").arg(fileName).arg(qdlerror());
executed (the execution status of this line is deduced): errorString = QLibrary::tr("Cannot load library %1: %2").arg(fileName).arg(qdlerror());
-
260 }
executed: }
Execution Count:7
7
261 if (pHnd) {
evaluated: pHnd
TRUEFALSE
yes
Evaluation Count:253
yes
Evaluation Count:7
7-253
262 qualifiedFileName = attempt;
executed (the execution status of this line is deduced): qualifiedFileName = attempt;
-
263 errorString.clear();
executed (the execution status of this line is deduced): errorString.clear();
-
264 }
executed: }
Execution Count:253
253
265 return (pHnd != 0);
executed: return (pHnd != 0);
Execution Count:260
260
266} -
267 -
268bool QLibraryPrivate::unload_sys() -
269{ -
270#if !defined(QT_NO_DYNAMIC_LIBRARY) -
271# if defined(QT_HPUX_LD) -
272 if (shl_unload((shl_t)pHnd)) { -
273# else -
274 if (dlclose(pHnd)) {
partially evaluated: dlclose(pHnd)
TRUEFALSE
no
Evaluation Count:0
yes
Evaluation Count:943
0-943
275# endif -
276 errorString = QLibrary::tr("Cannot unload library %1: %2").arg(fileName).arg(qdlerror());
never executed (the execution status of this line is deduced): errorString = QLibrary::tr("Cannot unload library %1: %2").arg(fileName).arg(qdlerror());
-
277 return false;
never executed: return false;
0
278 } -
279#endif -
280 errorString.clear();
executed (the execution status of this line is deduced): errorString.clear();
-
281 return true;
executed: return true;
Execution Count:943
943
282} -
283 -
284#ifdef Q_OS_LINUX -
285Q_CORE_EXPORT QFunctionPointer qt_linux_find_symbol_sys(const char *symbol) -
286{ -
287 return QFunctionPointer(dlsym(RTLD_DEFAULT, symbol));
never executed: return QFunctionPointer(dlsym(((void *) 0), symbol));
0
288} -
289#endif -
290 -
291#ifdef Q_OS_MAC -
292Q_CORE_EXPORT QFunctionPointer qt_mac_resolve_sys(void *handle, const char *symbol) -
293{ -
294 return QFunctionPointer(dlsym(handle, symbol)); -
295} -
296#endif -
297 -
298QFunctionPointer QLibraryPrivate::resolve_sys(const char* symbol) -
299{ -
300#if defined(QT_AOUT_UNDERSCORE) -
301 // older a.out systems add an underscore in front of symbols -
302 char* undrscr_symbol = new char[strlen(symbol)+2]; -
303 undrscr_symbol[0] = '_'; -
304 strcpy(undrscr_symbol+1, symbol); -
305 QFunctionPointer address = QFunctionPointer(dlsym(pHnd, undrscr_symbol)); -
306 delete [] undrscr_symbol; -
307#elif defined(QT_HPUX_LD) -
308 QFunctionPointer address = 0; -
309 if (shl_findsym((shl_t*)&pHnd, symbol, TYPE_UNDEFINED, &address) < 0) -
310 address = 0; -
311#elif defined (QT_NO_DYNAMIC_LIBRARY) -
312 QFunctionPointer address = 0; -
313#else -
314 QFunctionPointer address = QFunctionPointer(dlsym(pHnd, symbol));
executed (the execution status of this line is deduced): QFunctionPointer address = QFunctionPointer(dlsym(pHnd, symbol));
-
315#endif -
316 if (!address) {
evaluated: !address
TRUEFALSE
yes
Evaluation Count:48
yes
Evaluation Count:3427
48-3427
317 errorString = QLibrary::tr("Cannot resolve symbol \"%1\" in %2: %3").arg(
executed (the execution status of this line is deduced): errorString = QLibrary::tr("Cannot resolve symbol \"%1\" in %2: %3").arg(
-
318 QString::fromLatin1(symbol)).arg(fileName).arg(qdlerror());
executed (the execution status of this line is deduced): QString::fromLatin1(symbol)).arg(fileName).arg(qdlerror());
-
319 } else {
executed: }
Execution Count:48
48
320 errorString.clear();
executed (the execution status of this line is deduced): errorString.clear();
-
321 }
executed: }
Execution Count:3427
3427
322 return address;
executed: return address;
Execution Count:3475
3475
323} -
324 -
325QT_END_NAMESPACE -
326 -
327#endif // QT_NO_LIBRARY -
328 -
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