[projects/rc-scripts] daemon(): fix --waittime usage

[glen]

commit 2d338407a02307bc950e2f649fcde7f8fbbda991
Author: Elan Ruusamäe <glen at delfi.ee>
Date:   Mon May 18 17:44:48 2015 +0300

    daemon(): fix --waittime usage
    
    previous implementation was copy paste from killproc, which assumed pid
    already exists when loop is entered.

 lib/functions | 39 +++++++++++++++++++++++++++------------
 1 file changed, 27 insertions(+), 12 deletions(-)
---
diff --git a/lib/functions b/lib/functions
index 3e111d9..ec8a139 100644
--- a/lib/functions
+++ b/lib/functions
@@ -782,18 +782,10 @@ daemon() {
 		fi
 		); then
 
-		if [ -n "$waitname" -a -n "$waittime" ]; then
-			# Save basename.
-			base=${waitname##*/}
-			# Find pid.
-			pid=$(pidofproc "$waitname" "$pidfile")
-			[ -z "$pid" ] && pid=$(pidofproc "$base" "$pidfile")
-			i=0
-			while [ "$i" -lt "$waittime" ]; do
-				i=$((i + 1))
-				checkpid $pid && break
-				sleep 1
-			done
+		# wait for process (or pidfile) to be created
+		if [ "$waittime" -gt 0 ]; then
+			# waitname can be empty, as if pidfile is in use, it is not relevant
+			waitproc "$waittime" "$waitname" "$pidfile"
 		fi
 		log_success "$1 startup"
 		ok
@@ -806,6 +798,29 @@ daemon() {
 	return $exit_code
 }
 
+# wait (in seconds) for process (or pidfile) to be created
+# example: waitproc 30 httpd /var/run/httpd.pid
+waitproc() {
+	local waittime=$1 procname=$2 pidfile=$3
+	local i=0 pid
+	local now=$(date +%s)
+	local maxtime=$(($now + $waittime))
+
+	if [ -z "$procname" -a -z "$pidfile" ]; then
+		msg_usage "waitproc: procname or pidfile must be specified"
+		return 2
+	fi
+
+	while [ "$(date +%s)" -lt "$maxtime" ]; do
+		pid=$(pidofproc "$procname" "$pidfile")
+		[ -n "$pid" ] && break
+
+		# start-stop-daemon uses same delay
+		usleep 20000
+		i=$(( i + 1 ))
+	done
+}
+
 # A function to stop a program.
 killproc() {
 	local notset killlevel base pid pidfile result delay=3 try
================================================================

---- gitweb:

http://git.pld-linux.org/gitweb.cgi/projects/rc-scripts.git/commitdiff/2d338407a02307bc950e2f649fcde7f8fbbda991