307 lines
7.5 KiB
Bash
307 lines
7.5 KiB
Bash
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#!/bin/sh
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# NAME:
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# meta2deps.sh - extract useful info from .meta files
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#
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# SYNOPSIS:
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# meta2deps.sh SB="SB" "meta" ...
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#
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# DESCRIPTION:
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# This script looks each "meta" file and extracts the
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# information needed to deduce build and src dependencies.
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#
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# To do this, we extract the 'CWD' record as well as all the
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# syscall traces which describe 'R'ead, 'C'hdir and 'E'xec
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# syscalls.
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#
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# The typical meta file looks like::
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#.nf
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#
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# # Meta data file "path"
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# CMD "command-line"
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# CWD "cwd"
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# TARGET "target"
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# -- command output --
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# -- filemon acquired metadata --
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# # buildmon version 2
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# V 2
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# E "pid" "path"
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# R "pid" "path"
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# C "pid" "cwd"
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# R "pid" "path"
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# X "pid" "status"
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#.fi
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#
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# The fact that all the syscall entry lines start with a single
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# character make these files quite easy to process using sed(1).
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#
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# To simplify the logic the 'CWD' line is made to look like a
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# normal 'C'hdir entry, and "cwd" is remembered so that it can
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# be prefixed to any "path" which is not absolute.
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#
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# If the "path" being read ends in '.srcrel' it is the content
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# of (actually the first line of) that file that we are
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# interested in.
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#
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# Any "path" which lies outside of the sandbox "SB" is generally
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# not of interest and is ignored.
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#
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# The output, is a set of absolute paths with "SB" like:
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#.nf
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#
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# $SB/obj-i386/bsd/gnu/lib/csu
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# $SB/obj-i386/bsd/gnu/lib/libgcc
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# $SB/obj-i386/bsd/include
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# $SB/obj-i386/bsd/lib/csu/i386-elf
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# $SB/obj-i386/bsd/lib/libc
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# $SB/src/bsd/include
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# $SB/src/bsd/sys/i386/include
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# $SB/src/bsd/sys/sys
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# $SB/src/pan-release/rtsock
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# $SB/src/pfe-shared/include/jnx
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#.fi
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#
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# Which can then be further processed by 'gendirdeps.mk'
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#
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# If we are passed 'DPDEPS='"dpdeps", then for each src file
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# outside of "CURDIR" we read, we output a line like:
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#.nf
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#
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# DPDEPS_$path += $RELDIR
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#.fi
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#
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# with "$path" geting turned into reldir's, so that we can end
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# up with a list of all the directories which depend on each src
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# file in another directory. This can allow for efficient yet
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# complete testing of changes.
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# RCSid:
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# $Id: meta2deps.sh,v 1.2 2011/10/02 00:34:47 sjg Exp $
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# Copyright (c) 2010, Juniper Networks, Inc.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions
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# are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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meta2src() {
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cat /dev/null "$@" |
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sed -n '/^R .*\.[chyl]$/s,^..[0-9]* ,,p' |
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sort -u
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}
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meta2dirs() {
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cat /dev/null "$@" |
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sed -n '/^R .*\/.*\.[a-z0-9][^\/]*$/s,^..[0-9]* \(.*\)/[^/]*$,\1,p' |
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sort -u
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}
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meta2deps() {
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DPDEPS=
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while :
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do
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case "$1" in
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*=*) eval export "$1"; shift;;
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*) break;;
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esac
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done
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[ -z "$RELDIR" ] && unset DPDEPS
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tf=/tmp/m2d$$-$USER
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rm -f $tf.*
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trap 'rm -f $tf.*; trap 0' 0
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> $tf.dirdep
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> $tf.qual
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> $tf.srcdep
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> $tf.srcrel
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> $tf.dpdeps
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seenit=
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seensrc=
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lpid=
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cat /dev/null "$@" |
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sed -e 's,^CWD,C C,;/^[CREFL] /!d' -e "s,',,g" |
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while read op pid path junk
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do
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: op=$op pid=$pid path=$path
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# we track cwd and ldir (of interest) per pid
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# CWD is bmake's cwd
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case "$lpid,$pid" in
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,C) CWD=$path cwd=$path ldir=$path
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if [ -z "$SB" ]; then
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SB=`echo $CWD | sed 's,/obj.*,,'`
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fi
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SRCTOP=${SRCTOP:-$SB/src}
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continue
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;;
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$pid,$pid) ;;
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*)
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case "$lpid" in
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"") ;;
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*) eval ldir_$lpid=$ldir cwd_$lpid=$cwd;;
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esac
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eval ldir=\${ldir_$pid:-$CWD} cwd=\${cwd_$pid:-$CWD}
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lpid=$pid
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;;
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esac
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case "$op,$path" in
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W,*srcrel) continue;;
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C,*)
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case "$path" in
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/*) cwd=$path;;
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*) cwd=`cd $cwd/$path 2> /dev/null && /bin/pwd`;;
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esac
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# watch out for temp dirs that no longer exist
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test -d ${cwd:-/dev/null/no/such} || cwd=$CWD
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continue
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;;
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F,*) eval cwd_$path=$cwd ldir_$path=$ldir
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continue
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;;
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*) dir=${path%/*}
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case "$path" in
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$SB/*|${SB_BACKING_SB:-$SB}/*) ;;
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$SB_OBJROOT*) ;;
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/*/stage/*) ;;
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/*) continue;;
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*) for path in $ldir/$path $cwd/$path
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do
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test -e $path && break
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done
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dir=${path%/*}
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;;
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esac
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;;
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esac
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# avoid repeating ourselves...
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case "$DPDEPS,$seensrc," in
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,*)
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case ",$seenit," in
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*,$dir,*) continue;;
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esac
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;;
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*,$path,*) continue;;
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esac
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# canonicalize if needed
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case "/$dir/" in
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*/../*|*/./*)
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rdir=$dir
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dir=`cd $dir 2> /dev/null && /bin/pwd`
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seen="$rdir,$dir"
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;;
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*) seen=$dir;;
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esac
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case "$dir" in
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${CURDIR:-.}|${CURDIR:-.}/*|"") continue;;
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$SRCTOP/*|${SB_BACKING_SB:-$SB}/src/*)
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# avoid repeating ourselves...
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case "$DPDEPS,$seensrc," in
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,*)
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case ",$seenit," in
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*,$dir,*) continue;;
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esac
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;;
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esac
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;;
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*)
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case ",$seenit," in
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*,$dir,*) continue;;
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esac
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;;
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esac
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if [ -d $path ]; then
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case "$path" in
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*/..) ldir=${dir%/*};;
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*) ldir=$path;;
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esac
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continue
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fi
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[ -f $path ] || continue
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case "$dir" in
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$CWD) continue;; # ignore
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$SRCTOP/*|${SB_BACKING_SB:-$SB}/src/*)
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seenit="$seenit,$seen"
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echo $dir >> $tf.srcdep
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case "$DPDEPS,$reldir,$seensrc," in
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,*) ;;
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*) seensrc="$seensrc,$path"
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echo "DPDEPS_$dir/${path##*/} += $RELDIR" >> $tf.dpdeps
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;;
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esac
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continue
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;;
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esac
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# if there is a .dirdep we cannot skip
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# just because we've seen the dir before.
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if [ -s $path.dirdep ]; then
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# this file contains:
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# '# ${RELDIR}.<machine>'
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echo $path.dirdep >> $tf.qual
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continue
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elif [ -s $dir.dirdep ]; then
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echo $dir.dirdep >> $tf.qual
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seenit="$seenit,$seen"
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continue
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fi
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seenit="$seenit,$seen"
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case "$dir" in
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$SB/*|${SB_OBJROOT:-$SB/}*|${SB_BACKING_SB:-$SB}/*)
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echo $dir;;
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esac
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done > $tf.dirdep
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_nl=echo
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for f in $tf.dirdep $tf.qual $tf.srcdep
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do
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[ -s $f ] || continue
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case $f in
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*qual) # a list of .dirdep files
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# we can prefix everthing with $OBJTOP to
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# tell gendirdeps.mk that these are
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# DIRDEP entries, since they are already
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# qualified with .<machine> as needed.
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# We strip .$MACHINE though
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xargs cat < $f | sort -u |
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sed "s,^# ,,;s,^,$OBJTOP/,;s,\.$MACHINE\$,,"
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;;
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*) sort -u $f;;
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esac
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_nl=:
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done
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if [ -s $tf.dpdeps ]; then
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case "$DPDEPS" in
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*/*) ;;
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*) echo > $DPDEPS;; # the echo is needed!
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esac
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sort -u $tf.dpdeps |
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sed "s,${SRCTOP}/,,;s,${SB_BACKING_SB:-$SB}/src/,," >> $DPDEPS
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fi
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# ensure we produce _something_ else egrep -v gets upset
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$_nl
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}
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case /$0 in
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*/meta2dep*) meta2deps "$@";;
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*/meta2dirs*) meta2dirs "$@";;
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*/meta2src*) meta2src "$@";;
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esac
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