diff options
| -rw-r--r-- | usr.sbin/sysrc/sysrc | 47 | ||||
| -rw-r--r-- | usr.sbin/sysrc/sysrc.8 | 10 |
2 files changed, 49 insertions, 8 deletions
diff --git a/usr.sbin/sysrc/sysrc b/usr.sbin/sysrc/sysrc index 01ea31f..70676e2 100644 --- a/usr.sbin/sysrc/sysrc +++ b/usr.sbin/sysrc/sysrc @@ -45,6 +45,7 @@ SYSRC_VERSION="6.0 Nov-07,2013" # # Options # +CHECK_ONLY= DELETE= DESCRIBE= IGNORE_UNKNOWNS= @@ -100,6 +101,8 @@ help() "Dump a list of all non-default configuration variables." f_err "$optfmt" "-A" \ "Dump a list of all configuration variables (incl. defaults)." + f_err "$optfmt" "-c" \ + "Check. Return success if no changes needed, else error." f_err "$optfmt" "-d" \ "Print a description of the given variable." f_err "$optfmt" "-D" \ @@ -222,10 +225,11 @@ jail_depend() # # Process command-line flags # -while getopts aAdDef:Fhij:nNqR:vxX flag; do +while getopts aAcdDef:Fhij:nNqR:vxX flag; do case "$flag" in a) SHOW_ALL=${SHOW_ALL:-1};; A) SHOW_ALL=2;; + c) CHECK_ONLY=1;; d) DESCRIBE=1;; D) RC_CONFS=;; e) SHOW_EQUALS=1;; @@ -287,6 +291,12 @@ if [ "$DELETE" -a "$SHOW_ALL" ]; then fi # +# Pre-flight for `-c' command-line option +# +[ "$CHECK_ONLY" -a "$SHOW_ALL" ] && + die "$pgm: \`-c' option incompatible with \`-a'/\`-A' options" + +# # Process `-e', `-n', and `-N' command-line options # SEP=': ' @@ -312,6 +322,7 @@ if [ "$JAIL" -o "$ROOTDIR" ]; then $( [ "$DELETE" = "2" ] && echo \ -X ) $( [ "$SHOW_ALL" = "1" ] && echo \ -a ) $( [ "$SHOW_ALL" = "2" ] && echo \ -A ) + ${CHECK_ONLY:+-c} ${DESCRIBE:+-d} ${SHOW_EQUALS:+-e} ${IGNORE_UNKNOWNS:+-i} @@ -422,7 +433,7 @@ if [ "$SHOW_ALL" ]; then EXCEPT="IFS|EXCEPT|PATH|RC_DEFAULTS|OPTIND|DESCRIBE|SEP" EXCEPT="$EXCEPT|DELETE|SHOW_ALL|SHOW_EQUALS|SHOW_NAME" EXCEPT="$EXCEPT|SHOW_VALUE|SHOW_FILE|SYSRC_VERBOSE|RC_CONFS" - EXCEPT="$EXCEPT|pgm|SUCCESS|FAILURE" + EXCEPT="$EXCEPT|pgm|SUCCESS|FAILURE|CHECK_ONLY" EXCEPT="$EXCEPT|f_sysrc_desc_awk|f_sysrc_delete_awk" # @@ -515,6 +526,7 @@ fi # # Process command-line arguments # +costatus=$SUCCESS while [ $# -gt 0 ]; do NAME="${1%%=*}" @@ -528,7 +540,7 @@ while [ $# -gt 0 ]; do # first describe, then attempt to set # - if [ "$SYSRC_VERBOSE" ]; then + if [ "$SYSRC_VERBOSE" -a ! "$CHECK_ONLY" ]; then file=$( f_sysrc_find "$NAME" ) [ "$file" = "$RC_DEFAULTS" -o ! "$file" ] && \ file=$( f_sysrc_get 'rc_conf_files%%[$IFS]*' ) @@ -546,6 +558,20 @@ while [ $# -gt 0 ]; do fi # + # If `-c' is passed, simply compare and move on + # + if [ "$CHECK_ONLY" ]; then + if ! IGNORED=$( f_sysrc_get "$NAME?" ); then + costatus=$FAILURE + else + value=$( f_sysrc_get "$NAME" ) + [ "$value" = "${1#*=}" ] || costatus=$FAILURE + fi + shift 1 + continue + fi + + # # If `-N' is passed, simplify the output # if [ ! "$SHOW_VALUE" ]; then @@ -572,9 +598,16 @@ while [ $# -gt 0 ]; do fi ;; *) - if ! IGNORED="$( f_sysrc_get "$NAME?" )"; then - [ "$IGNORE_UNKNOWNS" ] \ - || echo "$pgm: unknown variable '$NAME'" + if ! IGNORED=$( f_sysrc_get "$NAME?" ); then + [ "$IGNORE_UNKNOWNS" ] || + echo "$pgm: unknown variable '$NAME'" + shift 1 + costatus=$FAILURE + continue + fi + + # The above check told us what we needed for `-c' + if [ "$CHECK_ONLY" ]; then shift 1 continue fi @@ -623,3 +656,5 @@ while [ $# -gt 0 ]; do esac shift 1 done + +[ ! "$CHECK_ONLY" ] || exit $costatus diff --git a/usr.sbin/sysrc/sysrc.8 b/usr.sbin/sysrc/sysrc.8 index 0a4aace..6d53e19 100644 --- a/usr.sbin/sysrc/sysrc.8 +++ b/usr.sbin/sysrc/sysrc.8 @@ -32,13 +32,13 @@ .Nd safely edit system rc files .Sh SYNOPSIS .Nm -.Op Fl dDeFhinNqvx +.Op Fl cdDeFhinNqvx .Op Fl f Ar file .Op Fl j Ar jail | Fl R Ar dir .Ar name Ns Op = Ns Ar value .Ar ... .Nm -.Op Fl dDeFhinNqvx +.Op Fl cdDeFhinNqvx .Op Fl f Ar file .Op Fl j Ar jail | Fl R Ar dir .Fl a | A @@ -57,6 +57,12 @@ Dump a list of all non-default configuration variables. .It Fl A Dump a list of all configuration variables .Pq incl. defaults . +.It Fl c +Check if the value will change when assigning a new value. +If verbose +.Pq see Dq Fl v +prints a message stating whether a change would occur. +Exits with success if no change is necessary, else returns error status. .It Fl d Print a description of the given variable. .It Fl D |
