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@angerman
Created January 4, 2012 11:09
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_SC_NGROUPS_MAX cannot be used with getgrouplist on OS X
--- a/source3/lib/system.c 2011-10-18 20:48:48.000000000 +0200
+++ b/source3/lib/system.c 2012-01-04 11:57:25.000000000 +0100
@@ -1159,6 +1159,13 @@
int groups_max(void)
{
+ /* On OS X, sysconf(_SC_NGROUPS_MAX) returns 16
+ * due to OS X's group nesting and getgrouplist
+ * will return a flat list; users can exceed the
+ * maximum of 16 groups. And easily will.
+ */
+ return 32; // NGROUPS_MAX is defined, hence the define above is void.
+
#if defined(SYSCONF_SC_NGROUPS_MAX)
int ret = sysconf(_SC_NGROUPS_MAX);
return (ret == -1) ? NGROUPS_MAX : ret;
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