kosaki	2011-03-06 23:21:31 +0900 (Sun, 06 Mar 2011)

  New Revision: 31034

  http://svn.ruby-lang.org/cgi-bin/viewvc.cgi?view=rev&revision=31034

  Log:
    * process.c (maxgroups, proc_setmaxgroups): increase max groups
      limitation up to 65536.

  Modified files:
    trunk/ChangeLog
    trunk/process.c

Index: ChangeLog
===================================================================
--- ChangeLog	(revision 31033)
+++ ChangeLog	(revision 31034)
@@ -1,3 +1,8 @@
+Sun Mar  6 23:18:23 2011  KOSAKI Motohiro  <kosaki.motohiro@g...>
+
+	* process.c (maxgroups, proc_setmaxgroups): increase max groups
+	  limitation up to 65536.
+
 Sun Mar  6 22:20:59 2011  Tanaka Akira  <akr@f...>
 
 	* ext/openssl/ossl_pkey_ec.c: parenthesize macro arguments.
Index: process.c
===================================================================
--- process.c	(revision 31033)
+++ process.c	(revision 31034)
@@ -4531,7 +4531,28 @@
 #endif
 
 
-static int maxgroups = 32;
+/*
+ * Maximum supplementary groups are platform dependent.
+ * FWIW, 65536 is enough big for our supported OSs.
+ *
+ * OS Name			max groups
+ * -----------------------------------------------
+ * Linux Kernel >= 2.6.3	65536
+ * Linux Kernel < 2.6.3		   32
+ * IBM AIX 5.2			   64
+ * IBM AIX 5.3 ... 6.1		  128
+ * IBM AIX 7.1			  128 (can be configured to be up to 2048)
+ * OpenBSD, NetBSD		   16
+ * FreeBSD < 8.0		   16
+ * FreeBSD >=8.0		 1023
+ * Darwin (Mac OS X)		   16
+ * Sun Solaris 7,8,9,10		   16
+ * Sun Solaris 11 / OpenSolaris	 1024
+ * HP-UX			   20
+ * Windows			 1015
+ */
+#define RB_MAX_GROUPS (65536)
+static int maxgroups = RB_MAX_GROUPS;
 
 
 #ifdef HAVE_GETGROUPS
@@ -4694,8 +4715,8 @@
 {
     int ngroups = FIX2UINT(val);
 
-    if (ngroups > 4096)
-	ngroups = 4096;
+    if (ngroups > RB_MAX_GROUPS)
+	ngroups = RB_MAX_GROUPS;
 
     maxgroups = ngroups;
 

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