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Date:      Tue, 10 Aug 2010 20:22:07 GMT
From:      "J. Hellenthal" <jhell@DataIX.net>
To:        freebsd-gnats-submit@FreeBSD.org
Subject:   misc/149510: [CFT] [sys/conf/newvers.sh] Cleanup and additions.
Message-ID:  <201008102022.o7AKM7cA035560@www.freebsd.org>
Resent-Message-ID: <201008102030.o7AKU6bY054101@freefall.freebsd.org>

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>Number:         149510
>Category:       misc
>Synopsis:       [CFT] [sys/conf/newvers.sh] Cleanup and additions.
>Confidential:   no
>Severity:       non-critical
>Priority:       medium
>Responsible:    freebsd-bugs
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          change-request
>Submitter-Id:   current-users
>Arrival-Date:   Tue Aug 10 20:30:06 UTC 2010
>Closed-Date:
>Last-Modified:
>Originator:     J. Hellenthal
>Release:        stable/8
>Organization:
>Environment:
FreeBSD 8.1-STABLE #0 r211092M 55:65408c40b051 Mon Aug  9 07:03:32 EDT
2010   jhell@ujump.dataix.net:/usr/obj/usr/src/sys/MITHOP
>Description:
Based on the parts of the script with the additions for tracking source
using git(1) I set out to add support for mercurial hg(1) and ended up
cleaning some of the script while making some of those additions.

This works exactly as before but a little more correct and with the
additions to be able to track kernel sources or whole source tree with a
local revision system. Example output follows (uname -v) from my system
being tracked locally with mercurial.

FreeBSD 8.1-STABLE #0 r211092M 55:65408c40b051 Mon Aug  9 07:03:32 EDT
2010   jhell@ujump.dataix.net:/usr/obj/usr/src/sys/MITHOP

Inspiration for making these changes came from mercurial, OpenSolaris
and finally http://wiki.freebsd.org/LocalMercurial

Following is a list of changes that I have made that I believe people
that are involved with the source may find useful.

1 file changed, 55 insertions(+), 35 deletions(-)

This allows a user:
 * That is using csup(1) or cvsup(1) to locally keep track of the whole
source tree or just the kernel part of the tree using svn(1), hg(1) or
git(1).

 * That is using svn(1) to checkout their source tree to use hg(1) or
git(1) to keep track of the whole tree or the kernel part of the tree.
	http://svn.freebsd.org/base/

 * That is using git(1) to checkout their source tree to use hg(1) to
keep track of the whole tree or the kernel part of the tree.
	http://spoerlein.net/gitweb/

This checks for:
 * SCM roots in src/ or src/sys for .svn, .hg, & .git and acts
accordingly if they exist while prioritizing using an SCM root in src/
before it uses src/sys/

 * Then looks for acceptable binaries for svn(1), hg(1) git(1) within
the select paths /usr/local/bin & then /usr/bin. The paths may change
for svn(1) or git(1) & maybe mercurial if it ever becomes part of world.
Currently I have set these to only look in /usr/local/bin.

Cleanups:
 * Instead of using variables that shared the same name as their
counterpart binaries to hold a revision number use more descriptive
names like svnrev gitrev & hgrev for revisions. Use git svnversion & hg
variables for their respective binaries.

 * Adjust the paths that are checked for binaries to be of only
/usr/local/bin and /usr/bin. "/bin" is highly unlikely to hold svn(1),
git(1) or hg(1).

 * Test for a SCM root in the source tree locations before we look for
binaries. If these don't exist there is no need to know where svn or git
are.

 * For git(1) always set work-tree and git-dir so there is no
possibility to end up with a "-dirty" git(1) revision.

 * Remove extraneous "touch version" since the previous if statement
already creates the file if its not found.

 * Inline the test for version file.

>How-To-Repeat:

>Fix:
Attached patch. Should apply cleanly to head and stable/8 but was developed on stable/8 r211092.

Patch attached with submission follows:

Index: sys/conf/newvers.sh
===================================================================
--- sys/conf/newvers.sh	(revision 211140)
+++ sys/conf/newvers.sh	(working copy)
@@ -78,12 +78,8 @@
 "
 
 LC_ALL=C; export LC_ALL
-if [ ! -r version ]
-then
-	echo 0 > version
-fi
+[ ! -r version ] && echo 0 >version
 
-touch version
 v=`cat version` u=${USER:-root} d=`pwd` h=${HOSTNAME:-`hostname`} t=`date`
 i=`${MAKE:-make} -V KERN_IDENT`
 
@@ -95,39 +91,63 @@
 	fi
 	SRCDIR=${SRCDIR%%/sys/*}
 
-	for dir in /bin /usr/bin /usr/local/bin; do
-		if [ -d "${SRCDIR}/sys/.svn" -a -x "${dir}/svnversion" ] ; then
-			svnversion=${dir}/svnversion
-			break
-		fi
-		if [ -d "${SRCDIR}/.git" -a -x "${dir}/git" ] ; then
-			git_cmd="${dir}/git --git-dir=${SRCDIR}/.git"
-			break
+	if [ -d "${SRCDIR}/.svn" -o -d "${SRCDIR}/sys/.svn" ]; then
+		for dir in /usr/local/bin; do
+			if [ -x "${dir}/svn" ]; then
+				svnversion=${dir}/svnversion
+				break
+			fi
+		done
+		if [ -n "$svnversion" ] ; then
+			svnrev=" r`cd ${SRCDIR}/sys && $svnversion`"
 		fi
-	done
+	fi
 
-	if [ -n "$svnversion" ] ; then
-		svn=" r`cd ${SRCDIR}/sys && $svnversion`"
+	if [ -d "${SRCDIR}/.hg" -o -d "${SRCDIR}/sys/.hg" ]; then
+		for dir in /usr/local/bin; do
+			if [ -x "${dir}/hg" ]; then
+				hg=${dir}/hg
+				break
+			fi
+		done
+		if [ -n "$hg" ]; then
+			hgrev=" `cd ${SRCDIR}/sys && $hg tip --template '{rev}:{node|short}'`"
+		fi
 	fi
-	if [ -n "$git_cmd" ] ; then
-		git=`$git_cmd rev-parse --verify --short HEAD 2>/dev/null`
-		svn=`$git_cmd svn find-rev $git 2>/dev/null`
-		if [ -n "$svn" ] ; then
-			svn=" r${svn}"
-			git="=${git}"
-		else
-			svn=`$git_cmd log | fgrep 'git-svn-id:' | head -1 | \
-			     sed -n 's/^.*@\([0-9][0-9]*\).*$/\1/p'`
-			if [ -n $svn ] ; then
-				svn=" r${svn}"
-				git="+${git}"
+
+	if [ -d "${SRCDIR}/.git" -o -d "${SRCDIR}/sys/.git" ]; then
+		for dir in /usr/local/bin; do
+			if [ -x "${dir}/git" ]; then
+				if [ -d "${SRCDIR}/.git" ]; then
+					git="${dir}/git --git-dir=${SRCDIR}/.git"
+					git="${git} --work-tree=${SRCDIR}"
+				else
+					git="${dir}/git --git-dir=${SRCDIR}/sys/.git"
+					git="${git} --work-tree=${SRCDIR}/sys"
+				fi
+				break
+			fi
+		done
+
+		if [ -n "$git" ] ; then
+			gitrev="`$git rev-parse --verify --short HEAD 2>/dev/null`"
+			gitsvnrev="`$git svn find-rev $gitrev 2>/dev/null`"
+			if [ -n "${gitsvnrev}" ] ; then
+				svnrev=" r${gitsvnrev}"
+				gitrev="=${gitrev}"
 			else
-				git=" ${git}"
+				gitsvnid="`$git log |fgrep 'git-svn-id:' |head -1 |\
+				sed -n 's/^.*@\([0-9][0-9]*\).*$/\1/p'`"
+				if [ -n "${gitsvnid}" ]; then
+					svnrev=" r${gitsvnid}"
+					gitrev="+${gitrev}"
+				else
+					gitrev=" ${gitrev}"
+				fi
+			fi
+			if [ -n "`$git diff-index --name-only HEAD`" ]; then
+				gitrev="${gitrev}-dirty"
 			fi
-		fi
-		if $git_cmd --work-tree=${SRCDIR} diff-index \
-		    --name-only HEAD | read dummy; then
-			git="${git}-dirty"
 		fi
 	fi
 	;;
@@ -135,8 +155,8 @@
 
 cat << EOF > vers.c
 $COPYRIGHT
-#define SCCSSTR "@(#)${VERSION} #${v}${svn}${git}: ${t}"
-#define VERSTR "${VERSION} #${v}${svn}${git}: ${t}\\n    ${u}@${h}:${d}\\n"
+#define SCCSSTR "@(#)${VERSION} #${v}${svnrev}${gitrev}${hgrev} ${t}"
+#define VERSTR "${VERSION} #${v}${svnrev}${gitrev}${hgrev} ${t}\\n 	${u}@${h}:${d}\\n"
 #define RELSTR "${RELEASE}"
 
 char sccs[sizeof(SCCSSTR) > 128 ? sizeof(SCCSSTR) : 128] = SCCSSTR;


>Release-Note:
>Audit-Trail:
>Unformatted:



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