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/include 53# $SB/obj-i386/bsd/lib/csu/i386 54# $SB/obj-i386/bsd/lib/libc 55# $SB/src/bsd/include 56# $SB/src/bsd/sys/i386/include 57# $SB/src/bsd/sys/sys 58# $SB/src/pan-release/rtsock 59# $SB/src/pfe-shared/include/jnx 60#.fi 61# 62# Which can then be further processed by 'gendirdeps.mk' 63# 64# If we are passed 'DPDEPS='"dpdeps", then for each src file 65# outside of "CURDIR" we read, we output a line like: 66#.nf 67# 68# DPDEPS_$path += $RELDIR 69#.fi 70# 71# with "$path" geting turned into reldir's, so that we can end 72# up with a list of all the directories which depend on each src 73# file in another directory. This can allow for efficient yet 74# complete testing of changes. 75 76 77# RCSid: 78# $Id: meta2deps.sh,v 1.12 2016/12/13 20:44:16 sjg Exp $ 79 80# Copyright (c) 2010-2013, Juniper Networks, Inc. 81# All rights reserved. 82# 83# Redistribution and use in source and binary forms, with or without 84# modification, are permitted provided that the following conditions 85# are met: 86# 1. Redistributions of source code must retain the above copyright 87# notice, this list of conditions and the following disclaimer. 88# 2. Redistributions in binary form must reproduce the above copyright 89# notice, this list of conditions and the following disclaimer in the 90# documentation and/or other materials provided with the distribution. 91# 92# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 93# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 94# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 95# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 96# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 97# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 98# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 99# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 100# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 101# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 102# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 103 104meta2src() { 105 cat /dev/null "$@" | 106 sed -n '/^R .*\.[chyl]$/s,^..[0-9]* ,,p' | 107 sort -u 108} 109 110meta2dirs() { 111 cat /dev/null "$@" | 112 sed -n '/^R .*\/.*\.[a-z0-9][^\/]*$/s,^..[0-9]* \(.*\)/[^/]*$,\1,p' | 113 sort -u 114} 115 116add_list() { 117 sep=' ' 118 suffix= 119 while : 120 do 121 case "$1" in 122 "|") sep="$1"; shift;; 123 -s) suffix="$2"; shift 2;; 124 *) break;; 125 esac 126 done 127 name=$1 128 shift 129 eval list="\$$name" 130 for top in "$@" 131 do 132 case "$sep$list$sep" in 133 *"$sep$top$suffix$sep"*) continue;; 134 esac 135 list="${list:+$list$sep}$top$suffix" 136 done 137 eval "$name=\"$list\"" 138} 139 140_excludes_f() { 141 egrep -v "$EXCLUDES" 142} 143 144meta2deps() { 145 DPDEPS= 146 SRCTOPS=$SRCTOP 147 OBJROOTS= 148 EXCLUDES= 149 while : 150 do 151 case "$1" in 152 *=*) eval export "$1"; shift;; 153 -a) MACHINE_ARCH=$2; shift 2;; 154 -m) MACHINE=$2; shift 2;; 155 -C) CURDIR=$2; shift 2;; 156 -H) HOST_TARGET=$2; shift 2;; 157 -S) add_list SRCTOPS $2; shift 2;; 158 -O) add_list OBJROOTS $2; shift 2;; 159 -X) add_list EXCLUDES '|' $2; shift 2;; 160 -R) RELDIR=$2; shift 2;; 161 -T) TARGET_SPEC=$2; shift 2;; 162 *) break;; 163 esac 164 done 165 166 _th= _o= 167 case "$MACHINE" in 168 host) _ht=$HOST_TARGET;; 169 esac 170 171 for o in $OBJROOTS 172 do 173 case "$MACHINE,/$o/" in 174 host,*$HOST_TARGET*) ;; 175 *$MACHINE*|*${TARGET_SPEC:-$MACHINE}*) ;; 176 *) add_list _o $o; continue;; 177 esac 178 for x in $_ht $TARGET_SPEC $MACHINE 179 do 180 case "$o" in 181 "") continue;; 182 */$x/) add_list _o ${o%$x/}; o=;; 183 */$x) add_list _o ${o%$x}; o=;; 184 *$x/) add_list _o ${o%$x/}; o=;; 185 *$x) add_list _o ${o%$x}; o=;; 186 esac 187 done 188 done 189 OBJROOTS="$_o" 190 191 case "$OBJTOP" in 192 "") 193 for o in $OBJROOTS 194 do 195 OBJTOP=$o${TARGET_SPEC:-$MACHINE} 196 break 197 done 198 ;; 199 esac 200 src_re= 201 obj_re= 202 add_list '|' -s '/*' src_re $SRCTOPS 203 add_list '|' -s '*' obj_re $OBJROOTS 204 205 [ -z "$RELDIR" ] && unset DPDEPS 206 tf=/tmp/m2d$$-$USER 207 rm -f $tf.* 208 trap 'rm -f $tf.*; trap 0' 0 209 210 > $tf.dirdep 211 > $tf.qual 212 > $tf.srcdep 213 > $tf.srcrel 214 > $tf.dpdeps 215 216 seenit= 217 seensrc= 218 lpid= 219 case "$EXCLUDES" in 220 "") _excludes=cat;; 221 *) _excludes=_excludes_f;; 222 esac 223 # handle @list files 224 case "$@" in 225 *@[!.]*) 226 for f in "$@" 227 do 228 case "$f" in 229 *.meta) cat $f;; 230 @*) xargs cat < ${f#@};; 231 *) cat $f;; 232 esac 233 done 234 ;; 235 *) cat /dev/null "$@";; 236 esac 2> /dev/null | 237 sed -e 's,^CWD,C C,;/^[CREFLM] /!d' -e "s,',,g" | 238 $_excludes | 239 while read op pid path junk 240 do 241 : op=$op pid=$pid path=$path 242 # we track cwd and ldir (of interest) per pid 243 # CWD is bmake's cwd 244 case "$lpid,$pid" in 245 ,C) CWD=$path cwd=$path ldir=$path 246 if [ -z "$SB" ]; then 247 SB=`echo $CWD | sed 's,/obj.*,,'` 248 fi 249 SRCTOP=${SRCTOP:-$SB/src} 250 continue 251 ;; 252 $pid,$pid) ;; 253 *) 254 case "$lpid" in 255 "") ;; 256 *) eval ldir_$lpid=$ldir;; 257 esac 258 eval ldir=\${ldir_$pid:-$CWD} cwd=\${cwd_$pid:-$CWD} 259 lpid=$pid 260 ;; 261 esac 262 263 case "$op,$path" in 264 W,*srcrel|*.dirdep) continue;; 265 C,*) 266 case "$path" in 267 /*) cwd=$path;; 268 *) cwd=`cd $cwd/$path 2> /dev/null && /bin/pwd`;; 269 esac 270 # watch out for temp dirs that no longer exist 271 test -d ${cwd:-/dev/null/no/such} || cwd=$CWD 272 eval cwd_$pid=$cwd 273 continue 274 ;; 275 F,*) # $path is new pid 276 eval cwd_$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