sysrc(8) -- a sysctl(8)-like utility for managing rc.conf(5)
Devin Teske
dteske at vicor.com
Tue Oct 19 17:50:35 UTC 2010
On Mon, 2010-10-18 at 17:39 -0700, Devin Teske wrote:
> On Wed, 2010-10-13 at 12:05 -0700, Devin Teske wrote:
> > On Tue, 2010-10-12 at 16:13 -0700, Devin Teske wrote:
> > > Hey all,
> > >
> > > [...]
> > >
> > > Behold... sysrc(8) v2.0
> > >
> > > #!/bin/sh
> > > [...]
> >
> > Version 2.1 is available here: http://druidbsd.sf.net/
>
> Version 2.2 now.
> Same links.
>
> I added `-R dir' for specifying an alternate root (other than `/')
> directory (mostly for handling jails).
Version 2.3 now.
Same links.
I added `-j jail' for specifying a jail id or name to operate within
(requires jls(8); overrides `-R dir').
>
> >
> > Direct links:
> > http://druidbsd.sf.net/download/sysrc.gz (download gzipped)
> > http://druidbsd.sf.net/download/sysrc.txt (view as text)
> >
> > Here's the changes:
> >
>
--- sysrc.2_2 2010-10-18 17:38:51.000000000 -0700
+++ sysrc 2010-10-19 10:40:33.000000000 -0700
@@ -2,8 +2,8 @@
# -*- tab-width: 4 -*- ;; Emacs
# vi: set tabstop=4 :: Vi/ViM
#
-# Revision: 2.2
-# Last Modified: October 18th, 2010
+# Revision: 2.3
+# Last Modified: October 19th, 2010
############################################################ COPYRIGHT
#
# (c)2010. Devin Teske. All Rights Reserved.
@@ -30,7 +30,8 @@
# SUCH DAMAGE.
#
# AUTHOR DATE DESCRIPTION
-# dteske 2010.10.18 Add `-R dir' for operating in different root-dir
+# dteske 2010.10.19 Add `-j jail' for operating within jails (see jls(8)).
+# dteske 2010.10.18 Add `-R dir' for operating in different root-dir.
# dteske 2010.10.13 Allow `-f file' multiple times.
# dteske 2010.10.12 Updates per freebsd-hackers thread.
# dteske 2010.09.29 Initial version.
@@ -56,6 +57,8 @@
# -n Show only variable values, not their names.
# -N Show only variable names, not their values.
# -R dir Operate within the root directory `dir' rather than `/'.
+# -j jail The jid or name of the jail to operate within (overrides
+# `-R dir'; requires jls(8)).
#
# ENVIRONMENT:
# RC_DEFAULTS Location of `/etc/defaults/rc.conf' file.
@@ -91,6 +94,7 @@ progname="${0##*/}"
#
DESCRIBE=
IGNORE_UNKNOWNS=
+JAIL=
RC_CONFS=
ROOTDIR=
SHOW_ALL=
@@ -175,6 +179,10 @@ usage()
"Show only variable names, not their values."
eprintf "$optfmt" "-R dir" \
"Operate within the root directory \`dir' rather than \`/'."
+ eprintf "$optfmt" "-j jail" \
+ "The jid or name of the jail to operate within (overrides"
+ eprintf "$optfmt" "" \
+ "\`-R dir'; requires jls(8))."
eprintf "\n"
eprintf "ENVIRONMENT:\n"
@@ -456,6 +464,14 @@ sysrc_set()
fi
#
+ # If not found, append new value to last file and return.
+ #
+ if [ "$not_found" ]; then
+ echo "$varname=\"$new_value\"" >> "$file"
+ return $SUCCESS
+ fi
+
+ #
# Perform sanity checks.
#
if [ ! -w $file ]; then
@@ -465,14 +481,6 @@ sysrc_set()
fi
#
- # If not found, append new value to last file and return.
- #
- if [ "$not_found" ]; then
- echo "$varname=\"$new_value\"" >> "$file"
- return $SUCCESS
- fi
-
- #
# Operate on the matching file, replacing only the last occurrence.
#
local new_contents="`lrev $file 2> /dev/null | \
@@ -585,10 +593,12 @@ $LINE"
#
# Process command-line options
#
-while getopts hf:aAdevinNR: flag; do
+while getopts hf:aAdevinNR:j: flag; do
case "$flag" in
h) usage;;
- f) RC_CONFS="$RC_CONFS${RC_CONFS:+ }$OPTARG";;
+ f) [ "$OPTARG" ] || die \
+ "%s: Missing or null argument to \`-f' flag" "$progname"
+ RC_CONFS="$RC_CONFS${RC_CONFS:+ }$OPTARG";;
a) SHOW_ALL=1;;
A) SHOW_ALL=2;;
d) DESCRIBE=1;;
@@ -597,7 +607,12 @@ while getopts hf:aAdevinNR: flag; do
i) IGNORE_UNKNOWNS=1;;
n) SHOW_NAME=;;
N) SHOW_VALUE=;;
- R) ROOTDIR="$OPTARG";;
+ R) [ "$OPTARG" ] || die \
+ "%s: Missing or null argument to \`-R' flag" "$progname"
+ ROOTDIR="$OPTARG";;
+ j) [ "$OPTARG" ] || die \
+ "%s: Missing or null argument to \`-j' flag" "$progname"
+ JAIL="$OPTARG";;
\?) usage;;
esac
done
@@ -616,6 +631,13 @@ if [ ! "$SHOW_VALUE" ]; then
fi
#
+# Process `-j jail' command-line option
+#
+if [ "$JAIL" ]; then
+ ROOTDIR="$( jls -j "$JAIL" path )" || die
+fi
+
+#
# Process `-R dir' command-line option
#
if [ "$ROOTDIR" ]; then
--
Cheers,
Devin Teske
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