diff options
Diffstat (limited to 'src/gui/kernel/qapplication_x11.cpp')
| -rw-r--r-- | src/gui/kernel/qapplication_x11.cpp | 17 |
1 files changed, 14 insertions, 3 deletions
diff --git a/src/gui/kernel/qapplication_x11.cpp b/src/gui/kernel/qapplication_x11.cpp index 2c51722..fbb4920 100644 --- a/src/gui/kernel/qapplication_x11.cpp +++ b/src/gui/kernel/qapplication_x11.cpp @@ -5658,10 +5658,21 @@ static void sm_performSaveYourself(QSessionManagerPrivate* smd) sm_setProperty(QString::fromLatin1(SmProgram), argument0); // tell the session manager about our user as well. struct passwd *entryPtr = 0; -#if !defined(QT_NO_THREAD) && defined(_POSIX_THREAD_SAFE_FUNCTIONS) && !defined(Q_OS_OPENBSD) - QVarLengthArray<char, 1024> buf(sysconf(_SC_GETPW_R_SIZE_MAX)); +#if defined(_POSIX_THREAD_SAFE_FUNCTIONS) && (_POSIX_THREAD_SAFE_FUNCTIONS - 0 > 0) + QVarLengthArray<char, 1024> buf(qMax<long>(sysconf(_SC_GETPW_R_SIZE_MAX), 1024L)); struct passwd entry; - getpwuid_r(geteuid(), &entry, buf.data(), buf.size(), &entryPtr); + while (getpwuid_r(geteuid(), &entry, buf.data(), buf.size(), &entryPtr) == ERANGE) { + if (buf.size() >= 32768) { + // too big already, fail + static char badusername[] = ""; + entryPtr = &entry; + entry.pw_name = badusername; + break; + } + + // retry with a bigger buffer + buf.resize(buf.size() * 2); + } #else entryPtr = getpwuid(geteuid()); #endif |