svn commit: r203858 - stable/8/sbin/sysctl

[Gavin Atkinson]

Author: gavin
Date: Sun Feb 14 09:48:53 2010
New Revision: 203858
URL: http://svn.freebsd.org/changeset/base/203858

Log:
  Merge r203310,203547,203717 from head:
  
    Implement the "-i" option to sysctl(8), to ignore failures while
    retrieving individual OIDs.  This allows the same list of OIDs to be
    passed to sysctl(8) across different systems where particular OIDs may
    not exist, and still get as much information as possible from them.
  
  PR:		bin/123644
  Submitted by:	dhw

Modified:
  stable/8/sbin/sysctl/sysctl.8
  stable/8/sbin/sysctl/sysctl.c
Directory Properties:
  stable/8/sbin/sysctl/   (props changed)

Modified: stable/8/sbin/sysctl/sysctl.8
==============================================================================
--- stable/8/sbin/sysctl/sysctl.8	Sun Feb 14 09:40:58 2010	(r203857)
+++ stable/8/sbin/sysctl/sysctl.8	Sun Feb 14 09:48:53 2010	(r203858)
@@ -28,7 +28,7 @@
 .\"	From: @(#)sysctl.8	8.1 (Berkeley) 6/6/93
 .\" $FreeBSD$
 .\"
-.Dd November 28, 2007
+.Dd February 6, 2010
 .Dt SYSCTL 8
 .Os
 .Sh NAME
@@ -36,7 +36,7 @@
 .Nd get or set kernel state
 .Sh SYNOPSIS
 .Nm
-.Op Fl bdehNnoqx
+.Op Fl bdehiNnoqx
 .Ar name Ns Op = Ns Ar value
 .Ar ...
 .Nm
@@ -82,6 +82,12 @@ or
 is specified, or a variable is being set.
 .It Fl h
 Format output for human, rather than machine, readability.
+.It Fl i
+Ignore unknown OIDs.
+The purpose is to make use of
+.Nm
+for collecting data from a variety of machines (not all of which
+are necessarily running exactly the same software) easier.
 .It Fl N
 Show only variable names, not their values.
 This is particularly useful with shells that offer programmable

Modified: stable/8/sbin/sysctl/sysctl.c
==============================================================================
--- stable/8/sbin/sysctl/sysctl.c	Sun Feb 14 09:40:58 2010	(r203857)
+++ stable/8/sbin/sysctl/sysctl.c	Sun Feb 14 09:48:53 2010	(r203858)
@@ -58,8 +58,8 @@ static const char rcsid[] =
 #include <string.h>
 #include <unistd.h>
 
-static int	aflag, bflag, dflag, eflag, hflag, Nflag, nflag, oflag;
-static int	qflag, xflag, warncount;
+static int	aflag, bflag, dflag, eflag, hflag, iflag;
+static int	Nflag, nflag, oflag, qflag, xflag, warncount;
 
 static int	oidfmt(int *, int, char *, u_int *);
 static void	parse(char *);
@@ -75,7 +75,7 @@ usage(void)
 {
 
 	(void)fprintf(stderr, "%s\n%s\n",
-	    "usage: sysctl [-bdehNnoqx] name[=value] ...",
+	    "usage: sysctl [-bdehiNnoqx] name[=value] ...",
 	    "       sysctl [-bdehNnoqx] -a");
 	exit(1);
 }
@@ -89,7 +89,7 @@ main(int argc, char **argv)
 	setbuf(stdout,0);
 	setbuf(stderr,0);
 
-	while ((ch = getopt(argc, argv, "AabdehNnoqwxX")) != -1) {
+	while ((ch = getopt(argc, argv, "AabdehiNnoqwxX")) != -1) {
 		switch (ch) {
 		case 'A':
 			/* compatibility */
@@ -110,6 +110,9 @@ main(int argc, char **argv)
 		case 'h':
 			hflag = 1;
 			break;
+		case 'i':
+			iflag = 1;
+			break;
 		case 'N':
 			Nflag = 1;
 			break;
@@ -187,6 +190,8 @@ parse(char *string)
 	len = name2oid(bufp, mib);
 
 	if (len < 0) {
+		if (iflag)
+			return;
 		if (qflag)
 			exit(1);
 		else