From ac68d688b19e386022aa036cdb069f9424948b40 Mon Sep 17 00:00:00 2001
From: "Jordan K. Hubbard" <jkh@FreeBSD.org>
Date: Wed, 10 Oct 2001 07:46:04 +0000
Subject: Check to see if the devfs MIB exists and return 1 if it exists rather
 than making device node(s). Submitted by:	Hiroo ONO
 <hiroo@oikumene.gcd.org>

---
 lib/libdisk/create_chunk.c | 9 +++++++++
 1 file changed, 9 insertions(+)

(limited to 'lib/libdisk')

diff --git a/lib/libdisk/create_chunk.c b/lib/libdisk/create_chunk.c
index 46a98072ac9c9..f87fc1dfed853 100644
--- a/lib/libdisk/create_chunk.c
+++ b/lib/libdisk/create_chunk.c
@@ -22,6 +22,7 @@ __FBSDID("$FreeBSD$");
 #include <sys/diskslice.h>
 #include <sys/types.h>
 #include <sys/stat.h>
+#include <sys/sysctl.h>
 #include <grp.h>
 #include <paths.h>
 #include <pwd.h>
@@ -283,12 +284,20 @@ MakeDev(struct chunk *c1, const char *path)
     struct passwd *pwd;
     uid_t owner;
     gid_t group;
+    int mib[4];
+    size_t miblen;
 
     *buf2 = '\0';
+    miblen = sizeof(mib)/sizeof(mib[0]);
     if (isDebug())
 	msgDebug("MakeDev: Called with %s on path %s\n", p, path);
     if (!strcmp(p, "X"))
 	return 0;
+    if (!sysctlnametomib("vfs.devfs.generation", &mib, &miblen)) {
+	if (isDebug())
+	    msgDebug("MakeDev: No need to mknod(2) with DEVFS.\n");
+	return 1;
+    }
 
     if (!strncmp(p, "ad", 2))
 	cmaj = 116, p += 2;
-- 
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