1#!/bin/sh 2 3# NAME: 4# meta2deps.sh - extract useful info from .meta files 5# 6# SYNOPSIS: 7# meta2deps.sh SB="SB" "meta" ... 8# 9# DESCRIPTION: 10# This script looks each "meta" file and extracts the 11# information needed to deduce build and src dependencies. 12# 13# To do this, we extract the 'CWD' record as well as all the 14# syscall traces which describe 'R'ead, 'C'hdir and 'E'xec 15# syscalls. 16# 17# The typical meta file looks like:: 18#.nf 19# 20# # Meta data file "path" 21# CMD "command-line" 22# CWD "cwd" 23# TARGET "target" 24# -- command output -- 25# -- filemon acquired metadata -- 26# # buildmon version 2 27# V 2 28# E "pid" "path" 29# R "pid" "path" 30# C "pid" "cwd" 31# R "pid" "path" 32# X "pid" "status" 33#.fi 34# 35# The fact that all the syscall entry lines start with a single 36# character make these files quite easy to process using sed(1). 37# 38# To simplify the logic the 'CWD' line is made to look like a 39# normal 'C'hdir entry, and "cwd" is remembered so that it can 40# be prefixed to any "path" which is not absolute. 41# 42# If the "path" being read ends in '.srcrel' it is the content 43# of (actually the first line of) that file that we are 44# interested in. 45# 46# Any "path" which lies outside of the sandbox "SB" is generally 47# not of interest and is ignored. 48# 49# The output, is a set of absolute paths with "SB" like: 50#.nf 51# 52# $SB/obj-i386/bsd/gnu/lib/csu 53# $SB/obj-i386/bsd/gnu/lib/libgcc 54# $SB/obj-i386/bsd/include 55# $SB/obj-i386/bsd/lib/csu/i386 56# $SB/obj-i386/bsd/lib/libc 57# $SB/src/bsd/include 58# $SB/src/bsd/sys/i386/include 59# $SB/src/bsd/sys/sys 60# $SB/src/pan-release/rtsock 61# $SB/src/pfe-shared/include/jnx 62#.fi 63# 64# Which can then be further processed by 'gendirdeps.mk' 65# 66# If we are passed 'DPDEPS='"dpdeps", then for each src file 67# outside of "CURDIR" we read, we output a line like: 68#.nf 69# 70# DPDEPS_$path += $RELDIR 71#.fi 72# 73# with "$path" geting turned into reldir's, so that we can end 74# up with a list of all the directories which depend on each src 75# file in another directory. This can allow for efficient yet 76# complete testing of changes. 77 78 79# RCSid: 80# $Id: meta2deps.sh,v 1.10 2016/03/02 18:53:36 sjg Exp $ 81 82# Copyright (c) 2010-2013, Juniper Networks, Inc. 83# All rights reserved. 84# 85# Redistribution and use in source and binary forms, with or without 86# modification, are permitted provided that the following conditions 87# are met: 88# 1. Redistributions of source code must retain the above copyright 89# notice, this list of conditions and the following disclaimer. 90# 2. Redistributions in binary form must reproduce the above copyright 91# notice, this list of conditions and the following disclaimer in the 92# documentation and/or other materials provided with the distribution. 93# 94# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 95# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 96# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 97# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 98# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 99# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 100# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 101# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 102# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 103# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 104# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 105 106meta2src() { 107 cat /dev/null "$@" | 108 sed -n '/^R .*\.[chyl]$/s,^..[0-9]* ,,p' | 109 sort -u 110} 111 112meta2dirs() { 113 cat /dev/null "$@" | 114 sed -n '/^R .*\/.*\.[a-z0-9][^\/]*$/s,^..[0-9]* \(.*\)/[^/]*$,\1,p' | 115 sort -u 116} 117 118add_list() { 119 sep=' ' 120 suffix= 121 while : 122 do 123 case "$1" in 124 "|") sep="$1"; shift;; 125 -s) suffix="$2"; shift 2;; 126 *) break;; 127 esac 128 done 129 name=$1 130 shift 131 eval list="\$$name" 132 for top in "$@" 133 do 134 case "$sep$list$sep" in 135 *"$sep$top$suffix$sep"*) continue;; 136 esac 137 list="${list:+$list$sep}$top$suffix" 138 done 139 eval "$name=\"$list\"" 140} 141 142_excludes_f() { 143 egrep -v "$EXCLUDES" 144} 145 146meta2deps() { 147 DPDEPS= 148 SRCTOPS=$SRCTOP 149 OBJROOTS= 150 EXCLUDES= 151 while : 152 do 153 case "$1" in 154 *=*) eval export "$1"; shift;; 155 -a) MACHINE_ARCH=$2; shift 2;; 156 -m) MACHINE=$2; shift 2;; 157 -C) CURDIR=$2; shift 2;; 158 -H) HOST_TARGET=$2; shift 2;; 159 -S) add_list SRCTOPS $2; shift 2;; 160 -O) add_list OBJROOTS $2; shift 2;; 161 -X) add_list EXCLUDES '|' $2; shift 2;; 162 -R) RELDIR=$2; shift 2;; 163 -T) TARGET_SPEC=$2; shift 2;; 164 *) break;; 165 esac 166 done 167 168 _th= _o= 169 case "$MACHINE" in 170 host) _ht=$HOST_TARGET;; 171 esac 172 173 for o in $OBJROOTS 174 do 175 case "$MACHINE,/$o/" in 176 host,*$HOST_TARGET*) ;; 177 *$MACHINE*|*${TARGET_SPEC:-$MACHINE}*) ;; 178 *) add_list _o $o; continue;; 179 esac 180 for x in $_ht $TARGET_SPEC $MACHINE 181 do 182 case "$o" in 183 "") continue;; 184 */$x/) add_list _o ${o%$x/}; o=;; 185 */$x) add_list _o ${o%$x}; o=;; 186 *$x/) add_list _o ${o%$x/}; o=;; 187 *$x) add_list _o ${o%$x}; o=;; 188 esac 189 done 190 done 191 OBJROOTS="$_o" 192 193 case "$OBJTOP" in 194 "") 195 for o in $OBJROOTS 196 do 197 OBJTOP=$o${TARGET_SPEC:-$MACHINE} 198 break 199 done 200 ;; 201 esac 202 src_re= 203 obj_re= 204 add_list '|' -s '/*' src_re $SRCTOPS 205 add_list '|' -s '*' obj_re $OBJROOTS 206 207 [ -z "$RELDIR" ] && unset DPDEPS 208 tf=/tmp/m2d$$-$USER 209 rm -f $tf.* 210 trap 'rm -f $tf.*; trap 0' 0 211 212 > $tf.dirdep 213 > $tf.qual 214 > $tf.srcdep 215 > $tf.srcrel 216 > $tf.dpdeps 217 218 seenit= 219 seensrc= 220 lpid= 221 case "$EXCLUDES" in 222 "") _excludes=cat;; 223 *) _excludes=_excludes_f;; 224 esac 225 # handle @list files 226 case "$@" in 227 *@[!.]*) 228 for f in "$@" 229 do 230 case "$f" in 231 *.meta) cat $f;; 232 @*) xargs cat < ${f#@};; 233 *) cat $f;; 234 esac 235 done 236 ;; 237 *) cat /dev/null "$@";; 238 esac 2> /dev/null | 239 sed -e 's,^CWD,C C,;/^[CREFLM] /!d' -e "s,',,g" | 240 $_excludes | 241 while read op pid path junk 242 do 243 : op=$op pid=$pid path=$path 244 # we track cwd and ldir (of interest) per pid 245 # CWD is bmake's cwd 246 case "$lpid,$pid" in 247 ,C) CWD=$path cwd=$path ldir=$path 248 if [ -z "$SB" ]; then 249 SB=`echo $CWD | sed 's,/obj.*,,'` 250 fi 251 SRCTOP=${SRCTOP:-$SB/src} 252 continue 253 ;; 254 $pid,$pid) ;; 255 *) 256 case "$lpid" in 257 "") ;; 258 *) eval ldir_$lpid=$ldir cwd_$lpid=$cwd;; 259 esac 260 eval ldir=\${ldir_$pid:-$CWD} cwd=\${cwd_$pid:-$CWD} 261 lpid=$pid 262 ;; 263 esac 264 265 case "$op,$path" in 266 W,*srcrel|*.dirdep) continue;; 267 C,*) 268 case "$path" in 269 /*) cwd=$path;; 270 *) cwd=`cd $cwd/$path 2> /dev/null && /bin/pwd`;; 271 esac 272 # watch out for temp dirs that no longer exist 273 test -d ${cwd:-/dev/null/no/such} || cwd=$CWD 274 continue 275 ;; 276 F,*) eval cwd_$path=$cwd ldir_$path=$ldir 277 continue 278 ;; 279 *) dir=${path%/*} 280 case "$path" in 281 $src_re|$obj_re) ;; 282 /*/stage/*) ;; 283 /*) continue;; 284 *) for path in $ldir/$path $cwd/$path 285 do 286 test -e $path && break 287 done 288 dir=${path%/*} 289 ;; 290 esac 291 ;; 292 esac 293 # avoid repeating ourselves... 294 case "$DPDEPS,$seensrc," in 295 ,*) 296 case ",$seenit," in 297 *,$dir,*) continue;; 298 esac 299 ;; 300 *,$path,*) continue;; 301 esac 302 # canonicalize if needed 303 case "/$dir/" in 304 */../*|*/./*) 305 rdir=$dir 306 dir=`cd $dir 2> /dev/null && /bin/pwd` 307 seen="$rdir,$dir" 308 ;; 309 *) seen=$dir;; 310 esac 311 case "$dir" in 312 ${CURDIR:-.}|"") continue;; 313 $src_re) 314 # avoid repeating ourselves... 315 case "$DPDEPS,$seensrc," in 316 ,*) 317 case ",$seenit," in 318 *,$dir,*) continue;; 319 esac 320 ;; 321 esac 322 ;; 323 *) 324 case ",$seenit," in 325 *,$dir,*) continue;; 326 esac 327 ;; 328 esac 329 if [ -d $path ]; then 330 case "$path" in 331 */..) ldir=${dir%/*};; 332 *) ldir=$path;; 333 esac 334 continue 335 fi 336 [ -f $path ] || continue 337 case "$dir" in 338 $CWD) continue;; # ignore 339 $src_re) 340 seenit="$seenit,$seen" 341 echo $dir >> $tf.srcdep 342 case "$DPDEPS,$reldir,$seensrc," in 343 ,*) ;; 344 *) seensrc="$seensrc,$path" 345 echo "DPDEPS_$dir/${path##*/} += $RELDIR" >> $tf.dpdeps 346 ;; 347 esac 348 continue 349 ;; 350 esac 351 # if there is a .dirdep we cannot skip 352 # just because we've seen the dir before. 353 if [ -s $path.dirdep ]; then 354 # this file contains: 355 # '# ${RELDIR}.<machine>' 356 echo $path.dirdep >> $tf.qual 357 continue 358 elif [ -s $dir.dirdep ]; then 359 echo $dir.dirdep >> $tf.qual 360 seenit="$seenit,$seen" 361 continue 362 fi 363 seenit="$seenit,$seen" 364 case "$dir" in 365 $obj_re) 366 echo $dir;; 367 esac 368 done > $tf.dirdep 369 _nl=echo 370 for f in $tf.dirdep $tf.qual $tf.srcdep 371 do 372 [ -s $f ] || continue 373 case $f in 374 *qual) # a list of .dirdep files 375 # we can prefix everything with $OBJTOP to 376 # tell gendirdeps.mk that these are 377 # DIRDEP entries, since they are already 378 # qualified with .<machine> as needed. 379 # We strip .$MACHINE though 380 xargs cat < $f | sort -u | 381 sed "s,^# ,,;s,^,$OBJTOP/,;s,\.${TARGET_SPEC:-$MACHINE}\$,,;s,\.$MACHINE\$,," 382 ;; 383 *) sort -u $f;; 384 esac 385 _nl=: 386 done 387 if [ -s $tf.dpdeps ]; then 388 case "$DPDEPS" in 389 */*) ;; 390 *) echo > $DPDEPS;; # the echo is needed! 391 esac 392 sort -u $tf.dpdeps | 393 sed "s,${SRCTOP}/,,;s,${SB_BACKING_SB:-$SB}/src/,," >> $DPDEPS 394 fi 395 # ensure we produce _something_ else egrep -v gets upset 396 $_nl 397} 398 399case /$0 in 400*/meta2dep*) meta2deps "$@";; 401*/meta2dirs*) meta2dirs "$@";; 402*/meta2src*) meta2src "$@";; 403esac 404