logpersist: incorporate size and buffer tunables
- Add hidden -n and -b flags that propagate to the underlying
logcat command. Publish aliases in help as --size and --buffer.
- Add --clear for start command so it clears before starting
- shell script bloating up to deal with option validation and
provide ERROR: and WARNING: advice.
ToDo:
- Deprecate shell script and replace with Eng and Userdebug
only Developer Options, before it becomes too powerful
or bloated to force us to rewrite an expendable like this
into C++.
Bug: 28120456
Change-Id: I0dff8acaa1e5c929454760cfa2801924956bc25d
diff --git a/logcat/logcatd.rc b/logcat/logcatd.rc
index cf0e0d2..70d1dd4 100644
--- a/logcat/logcatd.rc
+++ b/logcat/logcatd.rc
@@ -2,10 +2,10 @@
# all exec/services are called with umask(077), so no gain beyond 0700
mkdir /data/misc/logd 0700 logd log
# logd for write to /data/misc/logd, log group for read from pstore (-L)
- exec - logd log -- /system/bin/logcat -L -b all -v threadtime -v usec -v printable -D -f /data/misc/logd/logcat -r 1024 -n 256
+ exec - logd log -- /system/bin/logcat -L -b ${persist.logd.logpersistd.buffer:-all} -v threadtime -v usec -v printable -D -f /data/misc/logd/logcat -r 1024 -n ${persist.logd.logpersistd.size:-256}
start logcatd
-service logcatd /system/bin/logcat -b all -v threadtime -v usec -v printable -D -f /data/misc/logd/logcat -r 1024 -n 256
+service logcatd /system/bin/logcat -b ${persist.logd.logpersistd.buffer:-all} -v threadtime -v usec -v printable -D -f /data/misc/logd/logcat -r 1024 -n ${persist.logd.logpersistd.size:-256}
class late_start
disabled
# logd for write to /data/misc/logd, log group for read from log daemon
diff --git a/logcat/logpersist b/logcat/logpersist
index 8762ff1..e448456 100755
--- a/logcat/logpersist
+++ b/logcat/logpersist
@@ -1,5 +1,5 @@
#! /system/bin/sh
-# logpersist cat start and stop handlers
+# logpersist cat, start and stop handlers
progname="${0##*/}"
case `getprop ro.debuggable` in
1) ;;
@@ -7,36 +7,134 @@
exit 1
;;
esac
+
data=/data/misc/logd
property=persist.logd.logpersistd
service=logcatd
-if [ X"${1}" = X"-h" -o X"${1}" = X"--help" ]; then
- echo "${progname%.*}.cat - dump current ${service%d} logs"
- echo "${progname%.*}.start - start ${service} service"
- echo "${progname%.*}.stop [--clear] - stop ${service} service"
- exit 0
+size_default=256
+buffer_default=all
+args="${@}"
+
+size=${size_default}
+buffer=${buffer_default}
+clear=false
+while [ ${#} -gt 0 ]; do
+ case ${1} in
+ -c|--clear) clear=true ;;
+ --size=*) size="${1#--size=}" ;;
+ --rotate-count=*) size="${1#--rotate-count=}" ;;
+ -n|--size|--rotate-count) size="${2}" ; shift ;;
+ --buffer=*) buffer="${1#--buffer=}" ;;
+ -b|--buffer) buffer="${2}" ; shift ;;
+ -h|--help|*)
+ LEAD_SPACE_="`echo ${progname%.*} | tr '[ -~]' ' '`"
+ echo "${progname%.*}.cat - dump current ${service%d} logs"
+ echo "${progname%.*}.start [--size=<size_in_kb>] [--buffer=<buffers>] [--clear]"
+ echo "${LEAD_SPACE_} - start ${service} service"
+ echo "${progname%.*}.stop [--clear] - stop ${service} service"
+ case ${1} in
+ -h|--help) exit 0 ;;
+ *) echo ERROR: bad argument ${@} >&2 ; exit 1 ;;
+ esac
+ ;;
+ esac
+ shift
+done
+
+if [ -z "${size}" -o "${size_default}" = "${size}" ]; then
+ unset size
fi
+if [ -n "${size}" ] &&
+ ! ( [ 0 -lt "${size}" ] && [ 2048 -ge "${size}" ] ) >/dev/null 2>&1; then
+ echo ERROR: Invalid --size ${size} >&2
+ exit 1
+fi
+if [ -z "${buffer}" -o "${buffer_default}" = "${buffer}" ]; then
+ unset buffer
+fi
+if [ -n "${buffer}" ] && ! logcat -b ${buffer} -g >/dev/null 2>&1; then
+ echo ERROR: Invalid --buffer ${buffer} >&2
+ exit 1
+fi
+
case ${progname} in
*.cat)
- su 1036 ls "${data}" |
+ if [ -n "${size}${buffer}" -o "true" = "${clear}" ]; then
+ echo WARNING: Can not use --clear, --size or --buffer with ${progname%.*}.cat >&2
+ fi
+ su logd ls "${data}" |
tr -d '\r' |
sort -ru |
sed "s#^#${data}/#" |
- su 1036 xargs cat
+ su logd xargs cat
;;
*.start)
- su 0 setprop ${property} ${service}
+ current_buffer="`getprop ${property}.buffer`"
+ current_size="`getprop ${property}.size`"
+ if [ "${service}" = "`getprop ${property}`" ]; then
+ if [ "true" = "${clear}" ]; then
+ su root stop ${service}
+ su root setprop ${property} ""
+ # 20ms done, guarantees content stop before rm
+ sleep 1
+ elif [ "${buffer}|${size}" != "${current_buffer}|${current_size}" ]; then
+ echo "ERROR: Changing existing collection parameters from" >&2
+ if [ "${buffer}" != "${current_buffer}" ]; then
+ a=${current_buffer}
+ b=${buffer}
+ if [ -z "${a}" ]; then a="${default_buffer}"; fi
+ if [ -z "${b}" ]; then b="${default_buffer}"; fi
+ echo " --buffer ${a} to ${b}" >&2
+ fi
+ if [ "${size}" != "${current_size}" ]; then
+ a=${current_size}
+ b=${size}
+ if [ -z "${a}" ]; then a="${default_size}"; fi
+ if [ -z "${b}" ]; then b="${default_size}"; fi
+ echo " --size ${a} to ${b}" >&2
+ fi
+ echo " Are you sure you want to do this?" >&2
+ echo " Suggest add --clear to erase data and restart with new settings." >&2
+ echo " To blindly override and retain data, ${progname%.*}.stop first." >&2
+ exit 1
+ fi
+ fi
+ if [ "true" = "${clear}" ]; then
+ su logd,misc rm -rf "${data}"
+ fi
+ if [ -n "${buffer}${current_buffer}" ]; then
+ su root setprop ${property}.buffer "${buffer}"
+ fi
+ if [ -n "${size}${current_size}" ]; then
+ su root setprop ${property}.size "${size}"
+ fi
+ # ${service}.rc does the heavy lifting with the following trigger
+ su root setprop ${property} ${service}
getprop ${property}
+ # 20ms done, to permit process feedback check
sleep 1
+ # also generate an error return code if not found running, bonus
ps -t | grep "${data##*/}.*${service%d}"
;;
*.stop)
- su 0 stop ${service}
- su 0 setprop ${property} ""
- [ X"${1}" != X"-c" -a X"${1}" != X"--clear" ] ||
- ( sleep 1 ; su 1036,9998 rm -rf "${data}" )
+ if [ -n "${size}${buffer}" ]; then
+ echo "WARNING: Can not use --size or --buffer with ${progname%.*}.stop" >&2
+ fi
+ su root stop ${service}
+ su root setprop ${property} ""
+ if [ -n "`getprop ${property}.buffer`" ]; then
+ su root setprop ${property}.buffer ""
+ fi
+ if [ -n "`getprop ${property}.size`" ]; then
+ su root setprop ${property}.size ""
+ fi
+ if [ "true" = "${clear}" ]; then
+ # 20ms done, guarantees content stop before rm
+ sleep 1
+ su logd,misc rm -rf "${data}"
+ fi
;;
*)
- echo "Unexpected command ${0##*/} ${@}" >&2
+ echo "ERROR: Unexpected command ${0##*/} ${args}" >&2
exit 1
esac