Hello,
I propose the following patch, in order to make getgrouplist() to produce a
better result, in particular when the number of
groups of a user is more than the first value used by coreutils/id (which is
only 10).
diff -uNr cygwin-snapshot-20140523-1.original/winsup/cygwin/grp.cc
cygwin-snapshot-20140523-1.patched/winsup/cygwin/grp.cc
--- cygwin-snapshot-20140523-1.original/winsup/cygwin/grp.cc 2014-05-23
12:31:13.000000000 +0200
+++ cygwin-snapshot-20140523-1.patched/winsup/cygwin/grp.cc 2014-05-26
15:08:37.542897300 +0200
@@ -656,11 +656,11 @@
groups[cnt] = grp->gr_gid;
++cnt;
}
- *ngroups = cnt;
if (cnt > *ngroups)
ret = -1;
else
ret = cnt;
+ *ngroups = cnt;
syscall_printf ( "%d = getgrouplist(%s, %u, %p, %d)",
ret, user, gid, groups, *ngroups);
Regards,
Denis Excoffier.
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