tag of schizo@debian.org--2004-primary/debianutils--etch--0--version-0

(automatically generated log message)

git-archimport-id: schizo@debian.org--etch/debianutils--etch--0--base-0

1 files changed, 301 insertions, 0 deletions

diff --git a/savelog b/savelog
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index 0000000..abbd063
--- /dev/null
+++ b/savelog
@@ -0,0 +1,301 @@
+#! /bin/sh
+# savelog - save a log file
+#    Copyright (C) 1987, 1988 Ronald S. Karr and Landon Curt Noll
+#    Copyright (C) 1992  Ronald S. Karr
+# Slight modifications by Ian A. Murdock <imurdock@gnu.ai.mit.edu>:
+#	* uses `gzip' rather than `compress'
+#	* doesn't use $savedir; keeps saved log files in the same directory
+#	* reports successful rotation of log files
+#	* for the sake of consistency, files are rotated even if they are
+#	  empty
+# More modifications by Guy Maor <maor@debian.org>:
+#       * cleanup.
+#       * -p (preserve) option
+# 
+# usage: savelog [-m mode] [-u user] [-g group] [-t] [-p] [-c cycle]
+#		 [-j] [-C] [-d] [-l] [-r rolldir] [-n] [-q] file...
+#	-m mode	  - chmod log files to mode
+#	-u user	  - chown log files to user
+#	-g group  - chgrp log files to group
+#	-c cycle  - save cycle versions of the logfile	(default: 7)
+#	-r rolldir- use rolldir instead of . to roll files
+#	-C	  - force cleanup of cycled logfiles
+#	-d	  - use standard date for rolling
+#	-t	  - touch file
+#	-l	  - don't compress any log files	(default: compress)
+#       -p        - preserve mode/user/group of original file
+#	-j        - use bzip2 instead of gzip
+#	-n	  - do not rotate empty files
+#	-q	  - be quiet
+#	file 	  - log file names
+#
+# The savelog command saves and optionally compresses old copies of files.
+# Older version of 'file' are named:
+#
+#		'file'.<number><compress_suffix>
+#
+# where <number> is the version number, 0 being the newest.  By default,
+# version numbers > 0 are compressed (unless -l prevents it). The
+# version number 0 is never compressed on the off chance that a process
+# still has 'file' opened for I/O.
+#
+# if the '-d' option is specified, <number> will be YYMMDDhhmmss
+#
+# If the 'file' does not exist and -t was given, it will be created.
+#
+# For files that do exist and have lengths greater than zero, the following 
+# actions are performed.
+#
+#	1) Version numered files are cycled.  That is version 6 is moved to
+#	   version 7, version is moved to becomes version 6, ... and finally
+#	   version 0 is moved to version 1.  Both compressed names and
+#	   uncompressed names are cycled, regardless of -t.  Missing version 
+#	   files are ignored.
+#
+#	2) The new file.1 is compressed and is changed subject to 
+#	   the -m, -u and -g flags.  This step is skipped if the -t flag 
+#	   was given.
+#
+#	3) The main file is moved to file.0.
+#
+#	4) If the -m, -u, -g, -t, or -p flags are given, then the file is
+#          touched into existence subject to the given flags.  The -p flag
+#          will preserve the original owner, group, and permissions.
+#
+#	5) The new file.0 is changed subject to the -m, -u and -g flags.
+#
+# Note: If no -m, -u, -g, -t, or -p is given, then the primary log file is 
+#	not created.
+#
+# Note: Since the version numbers start with 0, version number <cycle>
+#       is never formed.  The <cycle> count must be at least 2.
+#
+# Bugs: If a process is still writing to the file.0 and savelog
+#	moved it to file.1 and compresses it, data could be lost.
+#	Smail does not have this problem in general because it
+#	restats files often.
+
+# common location
+export PATH=$PATH:/sbin:/bin:/usr/sbin:/usr/bin
+COMPRESS="gzip -9f"
+DOT_Z=".gz"
+DATUM=`date +%Y%m%d%H%M%S`
+
+# parse args
+exitcode=0	# no problems to far
+prog=`basename $0`
+mode=
+user=
+group=
+touch=
+forceclean=
+rolldir=
+datum=
+preserve=
+quiet=0
+rotateifempty=yes
+count=7
+
+usage()
+{
+    echo "Usage: $prog [-m mode] [-u user] [-g group] [-t] [-c cycle] [-p]"
+    echo "             [-j] [-C] [-d] [-l] [-r rolldir] [-n] [-q] file ..."
+    echo "	-m mode	   - chmod log files to mode"
+    echo "	-u user	   - chown log files to user"
+    echo "	-g group   - chgrp log files to group"
+    echo "	-c cycle   - save cycle versions of the logfile (default: 7)"
+    echo "	-r rolldir - use rolldir instead of . to roll files"
+    echo "	-C	   - force cleanup of cycled logfiles"
+    echo "	-d	   - use standard date for rolling"
+    echo "	-t	   - touch file"
+    echo "	-l	   - don't compress any log files (default: compress)"
+    echo "	-p         - preserve mode/user/group of original file"
+    echo "	-j         - use bzip2 instead of gzip"
+    echo "	-n         - do not rotate empty files"
+    echo "	-q         - suppress rotation message"
+    echo "	file 	   - log file names"
+}
+
+
+fixfile()
+{
+    if [ -n "$user" ]; then
+	chown -- "$user" "$1"
+    fi
+    if [ -n "$group" ]; then 
+	chgrp -- "$group" "$1"
+    fi
+    if [ -n "$mode" ]; then 
+	chmod -- "$mode" "$1"
+    fi
+}
+
+
+while getopts m:u:g:c:r:Cdtlphjnq opt ; do
+	case "$opt" in
+	m) mode="$OPTARG" ;;
+	u) user="$OPTARG" ;;
+	g) group="$OPTARG" ;;
+	c) count="$OPTARG" ;;
+	r) rolldir="$OPTARG" ;;
+	C) forceclean=1 ;;
+	d) datum=1 ;;
+	t) touch=1 ;;
+	j) COMPRESS="bzip2 -9f" ; DOT_Z=".bz2" ;;
+	l) COMPRESS="" ;;
+	p) preserve=1 ;;
+	n) rotateifempty="no" ;;
+	q) quiet=1 ;;
+	h) usage; exit 0 ;;
+	*) usage; exit 1 ;;
+	esac
+done
+
+shift $(($OPTIND - 1))
+
+if [ "$count" -lt 2 ]; then
+	echo "$prog: count must be at least 2" 1>&2
+	exit 2
+fi
+
+# cycle thru filenames
+while [ $# -gt 0 ]; do
+
+	# get the filename
+	filename="$1"
+	shift
+
+	# catch bogus files
+	if [ -e "$filename" ] && [ ! -f "$filename" ]; then
+		echo "$prog: $filename is not a regular file" 1>&2
+		exitcode=3
+		continue
+	fi
+
+	# if not a file or empty, do nothing major
+	# (in the Debian version, we rotate even if empty by default)
+	if [ ! -s "$filename" ] && [ "$rotateifempty" != "yes" ]; then
+		# if -t was given and it does not exist, create it
+		if test -n "$touch" && [ ! -f "$filename" ]; then 
+			touch -- "$filename"
+			if [ "$?" -ne 0 ]; then
+				echo "$prog: could not touch $filename" 1>&2
+				exitcode=4
+				continue
+			fi
+			fixfile "$filename"
+		fi
+		continue
+	fi
+
+ 	# be sure that the savedir exists and is writable
+	# (Debian default: $savedir is . and not ./OLD)
+ 	savedir=`dirname -- "$filename"`
+ 	if [ -z "$savedir" ]; then
+ 		savedir=.
+ 	fi
+	savedir="$savedir/$rolldir"
+ 	if [ ! -d "$savedir" ]; then
+ 		mkdir -p -- "$savedir"
+ 		if [ "$?" -ne 0 ]; then
+ 			echo "$prog: could not mkdir $savedir" 1>&2
+ 			exitcode=5
+ 			continue
+ 		fi
+ 		chmod 0755 -- "$savedir"
+ 	fi
+ 	if [ ! -w "$savedir" ]; then
+ 		echo "$prog: directory $savedir is not writable" 1>&2
+ 		exitcode=7
+ 		continue
+ 	fi
+ 
+	# determine our uncompressed file names
+	newname=`basename -- "$filename"`
+	newname="$savedir/$newname"
+
+	# cycle the old compressed log files
+	cycle=$(( $count - 1))
+	rm -f -- "$newname.$cycle" "$newname.$cycle$DOT_Z"
+	while [ $cycle -gt 1 ]; do
+		# --cycle
+		oldcycle=$cycle
+		cycle=$(( $cycle - 1 ))
+		# cycle log
+		if [ -f "$newname.$cycle$DOT_Z" ]; then
+			mv -f -- "$newname.$cycle$DOT_Z" \
+			    "$newname.$oldcycle$DOT_Z"
+		fi
+		if [ -f "$newname.$cycle" ]; then
+			# file was not compressed. move it anyway
+			mv -f -- "$newname.$cycle" "$newname.$oldcycle"
+		fi
+	done
+
+	# compress the old uncompressed log if needed
+	if [ -f "$newname.0" ]; then
+		if [ -z "$COMPRESS" ]; then
+			newfile="$newname.1"
+			mv -- "$newname.0" "$newfile"
+		else
+			newfile="$newname.1$DOT_Z"
+#			$COMPRESS < $newname.0 > $newfile
+#			rm -f $newname.0
+			$COMPRESS "$newname.0"
+			mv -- "$newname.0$DOT_Z" "$newfile"
+		fi
+		fixfile "$newfile"
+	fi
+
+	# compress the old uncompressed log if needed
+	if test -n "$datum" && test -n "$COMPRESS"; then
+		$COMPRESS -- "$newname".[0-9]*[0-9]
+	fi
+
+	# remove old files if so desired
+	if [ -n "$forceclean" ]; then
+		cycle=$(( $count - 1))
+		if [ -z "$COMPRESS" ]; then
+			rm -f -- `ls -t -- $newname.[0-9]* | sed -e 1,${cycle}d`
+		else
+			rm -f -- `ls -t -- $newname.[0-9]*$DOT_Z | sed -e 1,${cycle}d`
+		fi
+	fi
+
+	# create new file if needed
+	if [ -n "$preserve" ]; then
+		(umask 077
+		 touch -- "$filename.new"
+		 chown --reference="$filename" -- "$filename.new"
+		 chmod --reference="$filename" -- "$filename.new")
+		filenew=1
+	elif [ -n "$touch$user$group$mode" ]; then
+		touch -- "$filename.new"
+		fixfile "$filename.new"
+		filenew=1
+	fi
+
+	# link the file into the file.0 holding place
+	if [ -f "$filename" ]; then
+		if [ -n "$filenew" ]; then
+			if ln -f -- "$filename" "$newname.0"; then
+				mv -- "$filename.new" "$filename"
+			else
+				echo "Error hardlinking $filename to $newname.0" >&2
+				exitcode=8
+				continue
+			fi
+		else
+			mv -- "$filename" "$newname.0"
+		fi
+	fi
+	[ ! -f "$newname.0" ] && touch -- "$newname.0"
+	fixfile "$newname.0"
+	if [ -n "$datum" ]; then
+		mv -- "$newname.0" "$newname.$DATUM"
+	fi
+
+	# report successful rotation
+	test "$quiet" -eq 1 || echo "Rotated \`$filename' at `date`."
+done
+exit $exitcode