diff options
Diffstat (limited to 'qmake/library/ioutils.cpp')
-rw-r--r-- | qmake/library/ioutils.cpp | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/qmake/library/ioutils.cpp b/qmake/library/ioutils.cpp index 39264952c6..684bcb9a37 100644 --- a/qmake/library/ioutils.cpp +++ b/qmake/library/ioutils.cpp @@ -253,4 +253,39 @@ bool IoUtils::touchFile(const QString &targetFileName, const QString &referenceF } #endif +#ifdef Q_OS_UNIX +bool IoUtils::readLinkTarget(const QString &symlinkPath, QString *target) +{ + const QByteArray localSymlinkPath = QFile::encodeName(symlinkPath); +# if defined(__GLIBC__) && !defined(PATH_MAX) +# define PATH_CHUNK_SIZE 256 + char *s = 0; + int len = -1; + int size = PATH_CHUNK_SIZE; + + forever { + s = (char *)::realloc(s, size); + len = ::readlink(localSymlinkPath.constData(), s, size); + if (len < 0) { + ::free(s); + break; + } + if (len < size) + break; + size *= 2; + } +# else + char s[PATH_MAX+1]; + int len = readlink(localSymlinkPath.constData(), s, PATH_MAX); +# endif + if (len <= 0) + return false; + *target = QFile::decodeName(QByteArray(s, len)); +# if defined(__GLIBC__) && !defined(PATH_MAX) + ::free(s); +# endif + return true; +} +#endif + QT_END_NAMESPACE |