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qt-bugs@ issue : none
Trolltech task ID : none yet
bugs.kde.org number : None
applied: no
author: Dirk Mueller <mueller@kde.org>
in big user environments, getgrgid_r() needs more memory than sysconf() returns.
Try a bit harder.
--- a/src/corelib/io/qfsfileengine_unix.cpp
+++ b/src/corelib/io/qfsfileengine_unix.cpp
@@ -857,9 +857,13 @@
size_max = sysconf(_SC_GETGR_R_SIZE_MAX);
if (size_max == -1)
size_max = 1024;
- buf.resize(size_max);
- struct group entry;
- getgrgid_r(ownerId(own), &entry, buf.data(), buf.size(), &gr);
+ for (;size_max < 256000; size_max += size_max) {
+ buf.resize(size_max);
+ struct group entry;
+ if (!getgrgid_r(ownerId(own), &entry, buf.data(), buf.size(), &gr) || errno != ERANGE)
+ break;
+
+ }
#else
gr = getgrgid(ownerId(own));
#endif
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