110 lines
1.8 KiB
Bash
Executable File
110 lines
1.8 KiB
Bash
Executable File
#! /bin/sh
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#
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# xpp_debug: Turn on/off debugging flags via /sys/module/*/parameters/debug
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#
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modules="xpp xpp_usb xpd_fxs xpd_fxo xpd_bri xpd_pri xpd_echo"
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dbg_names="DEFAULT PCM LEDS SYNC SIGNAL PROC REGS DEVICES COMMANDS"
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usage() {
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echo 1>&2 "Usage: $0 [module_name] [[-]flags...]"
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echo 1>&2 " module_name => $modules"
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echo 1>&2 " flags => NONE $dbg_names ANY"
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echo 1>&2 ""
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echo 1>&2 " Example: $0 xpp ANY -PCM -LEDS"
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echo 1>&2 ""
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}
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sysfs_name() {
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f=''
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if [ -f "/sys/module/$1/parameters/debug" ]; then
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f="/sys/module/$1/parameters/debug"
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elif [ -f "/sys/module/$1/debug" ]; then
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f="/sys/module/$1/debug"
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fi
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echo "$f"
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}
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sysfs_value() {
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f=`sysfs_name "$1"`
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if [ "$f" != "" ]; then
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cat "$f"
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fi
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}
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show_debug() {
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usage
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for i in $modules
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do
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f=`sysfs_name "$i"`
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if [ -f "$f" ]; then
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val=`cat $f`
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j=0
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list=''
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for n in $dbg_names
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do
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if [ $(( val & (1 << j) )) -ne 0 ]; then
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list="$list $n"
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fi
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j=$((j+1))
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done
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if [ "$list" = "" ]; then
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list=' NONE'
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fi
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echo "$i $list"
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fi
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done
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}
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calc_debug() {
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val="$1"
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shift
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for wanted in $*
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do
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j=0
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found=0
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for n in $dbg_names
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do
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if [ "$wanted" = "$n" ]; then
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: $(( val |= (1 << j) ))
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found=1
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elif [ "$wanted" = -"$n" ]; then
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: $(( val &= ~(1 << j) ))
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found=1
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elif [ "$wanted" = "ANY" ]; then
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: $(( val = ~0 ))
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found=1
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elif [ "$wanted" = -"ANY" -o "$wanted" = "NONE" ]; then
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val=0
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found=1
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fi
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j=$((j+1))
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done
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if [ "$found" -eq 0 ]; then
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echo >&2 "$0: Unknown debug flag '$wanted'"
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exit 1
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fi
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done
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echo $val
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}
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if [ "$#" = 0 ]; then
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show_debug
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exit 0
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fi
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module="$1"
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shift
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if ! echo "$modules" | grep -w "$module" > /dev/null; then
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echo >&2 "$0: Unknown module $module"
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exit 1
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fi
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oldval=`sysfs_value "$module"`
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val=`calc_debug "$oldval" $*`
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file=`sysfs_name $module`
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echo "$val" > "$file"
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show_debug
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