From 57c87bfabb0ab97d12c6dd3589247210c935a085 Mon Sep 17 00:00:00 2001
From: Mikolaj Golub <trociny@FreeBSD.org>
Date: Tue, 22 Nov 2011 21:14:46 +0000
Subject: [PATCH] No need in procfs(5).

MFC after:	2 weeks
---
 bin/ps/ps.1 |  5 +----
 bin/ps/ps.c | 21 ---------------------
 2 files changed, 1 insertion(+), 25 deletions(-)

diff --git a/bin/ps/ps.1 b/bin/ps/ps.1
index 1787b400507f..be6035def246 100644
--- a/bin/ps/ps.1
+++ b/bin/ps/ps.1
@@ -29,7 +29,7 @@
 .\"     @(#)ps.1	8.3 (Berkeley) 4/18/94
 .\" $FreeBSD$
 .\"
-.Dd October 30, 2011
+.Dd November 22, 2011
 .Dt PS 1
 .Os
 .Sh NAME
@@ -686,9 +686,6 @@ attempts to automatically determine the terminal width.
 .Bl -tag -width ".Pa /boot/kernel/kernel" -compact
 .It Pa /boot/kernel/kernel
 default system namelist
-.It Pa /proc
-the mount point of
-.Xr procfs 5
 .El
 .Sh SEE ALSO
 .Xr kill 1 ,
diff --git a/bin/ps/ps.c b/bin/ps/ps.c
index eb2d6301dc7b..2171bc1e5b87 100644
--- a/bin/ps/ps.c
+++ b/bin/ps/ps.c
@@ -130,7 +130,6 @@ struct listinfo {
 	} l;
 };
 
-static int	 check_procfs(void);
 static int	 addelem_gid(struct listinfo *, const char *);
 static int	 addelem_pid(struct listinfo *, const char *);
 static int	 addelem_tty(struct listinfo *, const char *);
@@ -410,14 +409,6 @@ main(int argc, char *argv[])
 	argc -= optind;
 	argv += optind;
 
-	/*
-	 * If the user specified ps -e then they want a copy of the process
-	 * environment kvm_getenvv(3) attempts to open /proc/<pid>/mem.
-	 * Check to make sure that procfs is mounted on /proc, otherwise
-	 * print a warning informing the user that output will be incomplete.
-	 */
-	if (needenv == 1 && check_procfs() == 0)
-		warnx("Process environment requires procfs(5)");
 	/*
 	 * If there arguments after processing all the options, attempt
 	 * to treat them as a list of process ids.
@@ -1360,18 +1351,6 @@ kludge_oldps_options(const char *optlist, char *origval, const char *nextarg)
 	return (newopts);
 }
 
-static int
-check_procfs(void)
-{
-	struct statfs mnt;
-
-	if (statfs("/proc", &mnt) < 0)
-		return (0);
-	if (strcmp(mnt.f_fstypename, "procfs") != 0)
-		return (0);
-	return (1);
-}
-
 static void
 usage(void)
 {