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mirror of https://git.FreeBSD.org/src.git synced 2024-12-25 11:37:56 +00:00
freebsd/usr.sbin/bsdconfig/networking/share/media.subr
Devin Teske d4ae33f072 Performance and debugging enhancements:
+ Remove UNAME_P=$(...) from startup/misc -- already supplied by common.subr
+ Use f_getvar instead of $(eval echo \$$var) -- f_getvar is sub-shell free
+ Add `-e' and `-k var' options to f_eval_catch -- increasing use-cases
+ Use f_eval_catch to display errors on failure -- reducing duplicated code
+ Use f_eval_catch when we need output from a command -- improving debugging
+ Optimize f_isinter of strings.subr for performance -- now sub-shell free
+ Improve error checking on pidfiles -- using f_eval_catch and f_isinteger
+ Use $var_to_set arg of f_ifconfig_{inet,netmask} -- eliminate sub-shells
+ Use f_sprintf instead of $(printf ...) -- consolidate sub-shells
+ Use $var_to_set arg of f_route_get_default -- eliminate sub-shells
+ Add f_count to replace $(set -- ...;echo $#) -- eliminate sub-shells
+ Add f_count_ifs to replace $(IFS=x;set -- ...;echo $#) -- no sub-shells
+ Replace var="$var${var:+ }..." in loops with var="$var ..." with a follow-
  up var="${var# }" to trim leading whitespace -- optimize loops
+ Use $var_to_set arg of f_resolv_conf_nameservers -- eliminate sub-shells
+ Comments for the f_eval_catch function
+ Remove a duplicate `local ... desc ...' in f_device_get_all of device.subr
+ Use $var_to_set arg of f_device_capacity -- eliminate sub-shells
+ Whitespace fixes in f_dialog_init of dialog.subr
+ Optimize f_inet_atoi of media/tcpip.subr for performance -- sub-shell free
+ In several cases, send stderr to /dev/null -- clean up runtime execution
+ Change f_err of common.subr to go to program stderr not terminal stderr,
  allowing redirection of output from functions that use f_err
+ Disable debugging when using f_getvar to get variable argument to
  f_startup_rcconf_map_expand of startup/rcconf.subr
+ Use f_replace_all instead of $(echo ... | tr | sed) -- performance
+ Add a $var_to_set option to f_index_{file,menusel_{command,keyword}} of
  common.subr -- centralize sub-shells
2013-12-07 00:31:01 +00:00

248 lines
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if [ ! "$_NETWORKING_MEDIA_SUBR" ]; then _NETWORKING_MEDIA_SUBR=1
#
# Copyright (c) 2006-2013 Devin Teske
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
# 1. Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
# ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
# FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
# DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
# OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
# LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
# OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
# SUCH DAMAGE.
#
# $FreeBSD$
#
############################################################ INCLUDES
BSDCFG_SHARE="/usr/share/bsdconfig"
. $BSDCFG_SHARE/common.subr || exit 1
f_dprintf "%s: loading includes..." networking/media.subr
f_include $BSDCFG_SHARE/dialog.subr
f_include $BSDCFG_SHARE/networking/common.subr
f_include $BSDCFG_SHARE/strings.subr
f_include $BSDCFG_SHARE/sysrc.subr
BSDCFG_LIBE="/usr/libexec/bsdconfig" APP_DIR="120.networking"
f_include_lang $BSDCFG_LIBE/$APP_DIR/include/messages.subr
############################################################ FUNCTIONS
# f_ifconfig_options $interface
#
# Returns any/all extra ifconfig(8) parameters associated with $interface.
#
f_ifconfig_options()
{
local interface="$1"
[ "$interface" ] || return $SUCCESS
#
# Loop over the options, removing what we don't want
#
(
set -- $( f_sysrc_get ifconfig_$interface )
#
# Return if the interface is configured for DHCP
#
glob="[Dd][Hh][Cc][Pp]"
case "$*" in
$glob|[Ss][Yy][Nn][Cc]$glob|[Nn][Oo][Ss][Yy][Nn][Cc]$glob)
exit $SUCCESS
esac
output=
while [ $# -gt 0 ]; do
case "$1" in
inet|netmask) shift 1 ;;
*) output="$output${output:+ }$1"
esac
shift 1
done
echo "$output"
)
}
# f_ifconfig_media $interface
#
# Returns list of supported media for $interface.
#
f_ifconfig_media()
{
local interface="$1"
ifconfig -m "$interface" 2> /dev/null | awk \
'
BEGIN { media_found = 0 }
{
if ( media_found == 1 ) { print; next }
}
( $1 $2 == "supported" "media:" ) \
{
media_found = 1
next
}
END { exit ! media_found }
'
}
# f_dialog_input_options $interface
#
# Input custom interface options. If the user does not press ESC or choose
# Cancel/No, $options will hold the user's input. Default input is taken from
# the same variable ($options).
#
f_dialog_input_options()
{
local interface="$1"
#
# Return with-error when there are NFS-mounts currently active. If the
# options are changed while NFS-exported directories are mounted,
# the system may hang (if any NFS mounts are using that interface).
#
if f_nfs_mounted && ! f_jailed; then
local setting
f_sprintf setting "$msg_current_options" \
"$interface" "$options"
f_noyes "$msg_nfs_mounts_may_cause_hang" "$setting" ||
return $DIALOG_CANCEL
fi
local msg
f_sprintf msg "$msg_please_enter_mediaopts" "$interface"
local hline="$hline_alnum_punc_tab_enter"
local _options
_options=$( $DIALOG \
--title "$DIALOG_TITLE" \
--backtitle "$DIALOG_BACKTITLE" \
--hline "$hline" \
--ok-label "$msg_ok" \
--cancel-label "$msg_cancel" \
--inputbox "$msg" 9 70 \
"$options" \
2>&1 >&$DIALOG_TERMINAL_PASSTHRU_FD
)
local retval=$?
f_dialog_line_sanitize _options
[ $retval -eq $DIALOG_OK ] && options="$_options"
return $retval
}
# f_dialog_menu_media_options $interface
#
# Display a menu of additional media options for the given network interface.
#
f_dialog_menu_media_options()
{
local interface="$1" _options="$2"
#
# Not all network interfaces support additional media options, but
# when available we should prompt the user to select from a list
# of available options (or none, as is the first/default option).
#
#
# Return with-error when there are NFS-mounts currently active. If the
# media options are changed while NFS-exported directories are mounted,
# the system may hang (if any NFS mounts are using that interface).
#
if f_nfs_mounted && ! f_jailed; then
local setting
f_sprintf setting "$msg_current_options" \
"$interface" "$_options"
f_noyes "$msg_nfs_mounts_may_cause_hang" "$setting" ||
return $DIALOG_CANCEL
fi
#
# Build list of additional media options
#
local opt_none="$msg_no_options"
local opt_cust="$msg_custom"
local supported_media="$(
f_ifconfig_media $interface | \
( index=1
echo "'$( f_substr "$DIALOG_MENU_TAGS" $index 1 )'"
echo "'$opt_none'"
index=$(( $index + 1 ))
echo "'$( f_substr "$DIALOG_MENU_TAGS" $index 1 )'"
echo "'$opt_cust'"
index=$(( $index + 1 ))
while read media_options; do
[ $index -lt ${#DIALOG_MENU_TAGS} ] || break
echo "'$( f_substr "$DIALOG_MENU_TAGS" $index 1 )'"
echo "'$media_options'"
index=$(( $index + 1 ))
done
)
)"
local msg
if [ "$USE_XDIALOG" ]; then
f_sprintf msg "$xmsg_supported_media_options" \
"$interface" "$interface"
else
f_sprintf msg "$msg_supported_media_options" \
"$interface" "$interface"
fi
local hline="$hline_arrows_tab_enter"
local tag
tag=$( eval $DIALOG \
--title \"\$DIALOG_TITLE\" \
--backtitle \"\$DIALOG_BACKTITLE\" \
--hline \"\$hline\" \
--ok-label \"\$msg_ok\" \
--cancel-label \"\$msg_cancel\" \
--menu \"\$msg\" 21 60 12 \
$supported_media \
2>&1 >&$DIALOG_TERMINAL_PASSTHRU_FD
)
local retval=$?
f_dialog_data_sanitize tag
if [ $retval -eq $DIALOG_OK ]; then
options=$( eval f_dialog_menutag2item \"\$tag\" \
$supported_media )
case "$options" in
"$opt_none")
options=
;;
"$opt_cust")
options="$_options"
f_dialog_input_options "$interface"
retval=$?
;;
esac
fi
return $retval
}
############################################################ MAIN
f_dprintf "%s: Successfully loaded." networking/media.subr
fi # ! $_NETWORKING_MEDIA_SUBR