diff options
| -rw-r--r-- | src/corelib/io/qlockfile_unix.cpp | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/src/corelib/io/qlockfile_unix.cpp b/src/corelib/io/qlockfile_unix.cpp index d6ea2f1f2d..6cc590d45f 100644 --- a/src/corelib/io/qlockfile_unix.cpp +++ b/src/corelib/io/qlockfile_unix.cpp @@ -223,13 +223,14 @@ QString QLockFilePrivate::processNameByPid(qint64 pid) if (!QFile::exists(QStringLiteral("/proc/version"))) return QString(); char exePath[64]; - char buf[PATH_MAX]; - memset(buf, 0, sizeof(buf)); + char buf[PATH_MAX + 1]; sprintf(exePath, "/proc/%lld/exe", pid); - if (readlink(exePath, buf, sizeof(buf)) < 0) { + size_t len = (size_t)readlink(exePath, buf, sizeof(buf)); + if (len >= sizeof(buf)) { // The pid is gone. Return some invalid process name to fail the test. return QStringLiteral("/ERROR/"); } + buf[len] = 0; return QFileInfo(QString::fromUtf8(buf)).fileName(); #elif defined(Q_OS_BSD4) && !defined(Q_OS_IOS) kinfo_proc *proc = kinfo_getproc(pid); |