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-rw-r--r--process.c27
1 files changed, 24 insertions, 3 deletions
diff --git a/process.c b/process.c
index 38f5e28faa..e55c3fda83 100644
--- a/process.c
+++ b/process.c
@@ -4531,7 +4531,28 @@ proc_setgid(VALUE obj, VALUE id)
#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 @@ proc_setmaxgroups(VALUE obj, VALUE val)
{
int ngroups = FIX2UINT(val);
- if (ngroups > 4096)
- ngroups = 4096;
+ if (ngroups > RB_MAX_GROUPS)
+ ngroups = RB_MAX_GROUPS;
maxgroups = ngroups;