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/libgcc 53# $SB/obj-i386/bsd/include 54# $SB/obj-i386/bsd/lib/csu/i386 55# $SB/obj-i386/bsd/lib/libc 56# $SB/src/bsd/include 57# $SB/src/bsd/sys/i386/include 58# $SB/src/bsd/sys/sys 59# $SB/src/pan-release/rtsock 60# $SB/src/pfe-shared/include/jnx 61#.fi 62# 63# Which can then be further processed by 'gendirdeps.mk' 64# 65# If we are passed 'DPDEPS='"dpdeps", then for each src file 66# outside of "CURDIR" we read, we output a line like: 67#.nf 68# 69# DPDEPS_$path += $RELDIR 70#.fi 71# 72# with "$path" geting turned into reldir's, so that we can end 73# up with a list of all the directories which depend on each src 74# file in another directory. This can allow for efficient yet 75# complete testing of changes. 76 77 78# RCSid: 79# $Id: meta2deps.sh,v 1.12 2016/12/13 20:44:16 sjg Exp $ 80 81# Copyright (c) 2010-2013, Juniper Networks, Inc. 82# All rights reserved. 83# 84# Redistribution and use in source and binary forms, with or without 85# modification, are permitted provided that the following conditions 86# are met: 87# 1. Redistributions of source code must retain the above copyright 88# notice, this list of conditions and the following disclaimer. 89# 2. Redistributions in binary form must reproduce the above copyright 90# notice, this list of conditions and the following disclaimer in the 91# documentation and/or other materials provided with the distribution. 92# 93# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 94# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 95# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 96# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 97# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 98# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 99# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 100# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 101# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 102# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 103# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 104 105meta2src() { 106 cat /dev/null "$@" | 107 sed -n '/^R .*\.[chyl]$/s,^..[0-9]* ,,p' | 108 sort -u 109} 110 111meta2dirs() { 112 cat /dev/null "$@" | 113 sed -n '/^R .*\/.*\.[a-z0-9][^\/]*$/s,^..[0-9]* \(.*\)/[^/]*$,\1,p' | 114 sort -u 115} 116 117add_list() { 118 sep=' ' 119 suffix= 120 while : 121 do 122 case "$1" in 123 "|") sep="$1"; shift;; 124 -s) suffix="$2"; shift 2;; 125 *) break;; 126 esac 127 done 128 name=$1 129 shift 130 eval list="\$$name" 131 for top in "$@" 132 do 133 case "$sep$list$sep" in 134 *"$sep$top$suffix$sep"*) continue;; 135 esac 136 list="${list:+$list$sep}$top$suffix" 137 done 138 eval "$name=\"$list\"" 139} 140 141_excludes_f() { 142 egrep -v "$EXCLUDES" 143} 144 145meta2deps() { 146 DPDEPS= 147 SRCTOPS=$SRCTOP 148 OBJROOTS= 149 EXCLUDES= 150 while : 151 do 152 case "$1" in 153 *=*) eval export "$1"; shift;; 154 -a) MACHINE_ARCH=$2; shift 2;; 155 -m) MACHINE=$2; shift 2;; 156 -C) CURDIR=$2; shift 2;; 157 -H) HOST_TARGET=$2; shift 2;; 158 -S) add_list SRCTOPS $2; shift 2;; 159 -O) add_list OBJROOTS $2; shift 2;; 160 -X) add_list EXCLUDES '|' $2; shift 2;; 161 -R) RELDIR=$2; shift 2;; 162 -T) TARGET_SPEC=$2; shift 2;; 163 *) break;; 164 esac 165 done 166 167 _th= _o= 168 case "$MACHINE" in 169 host) _ht=$HOST_TARGET;; 170 esac 171 172 for o in $OBJROOTS 173 do 174 case "$MACHINE,/$o/" in 175 host,*$HOST_TARGET*) ;; 176 *$MACHINE*|*${TARGET_SPEC:-$MACHINE}*) ;; 177 *) add_list _o $o; continue;; 178 esac 179 for x in $_ht $TARGET_SPEC $MACHINE 180 do 181 case "$o" in 182 "") continue;; 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 *$x) add_list _o ${o%$x}; o=;; 187 esac 188 done 189 done 190 OBJROOTS="$_o" 191 192 case "$OBJTOP" in 193 "") 194 for o in $OBJROOTS 195 do 196 OBJTOP=$o${TARGET_SPEC:-$MACHINE} 197 break 198 done 199 ;; 200 esac 201 src_re= 202 obj_re= 203 add_list '|' -s '/*' src_re $SRCTOPS 204 add_list '|' -s '*' obj_re $OBJROOTS 205 206 [ -z "$RELDIR" ] && unset DPDEPS 207 tf=/tmp/m2d$$-$USER 208 rm -f $tf.* 209 trap 'rm -f $tf.*; trap 0' 0 210 211 > $tf.dirdep 212 > $tf.qual 213 > $tf.srcdep 214 > $tf.srcrel 215 > $tf.dpdeps 216 217 seenit= 218 seensrc= 219 lpid= 220 case "$EXCLUDES" in 221 "") _excludes=cat;; 222 *) _excludes=_excludes_f;; 223 esac 224 # handle @list files 225 case "$@" in 226 *@[!.]*) 227 for f in "$@" 228 do 229 case "$f" in 230 *.meta) cat $f;; 231 @*) xargs cat < ${f#@};; 232 *) cat $f;; 233 esac 234 done 235 ;; 236 *) cat /dev/null "$@";; 237 esac 2> /dev/null | 238 sed -e 's,^CWD,C C,;/^[CREFLM] /!d' -e "s,',,g" | 239 $_excludes | 240 while read op pid path junk 241 do 242 : op=$op pid=$pid path=$path 243 # we track cwd and ldir (of interest) per pid 244 # CWD is bmake's cwd 245 case "$lpid,$pid" in 246 ,C) CWD=$path cwd=$path ldir=$path 247 if [ -z "$SB" ]; then 248 SB=`echo $CWD | sed 's,/obj.*,,'` 249 fi 250 SRCTOP=${SRCTOP:-$SB/src} 251 continue 252 ;; 253 $pid,$pid) ;; 254 *) 255 case "$lpid" in 256 "") ;; 257 *) eval ldir_$lpid=$ldir;; 258 esac 259 eval ldir=\${ldir_$pid:-$CWD} cwd=\${cwd_$pid:-$CWD} 260 lpid=$pid 261 ;; 262 esac 263 264 case "$op,$path" in 265 W,*srcrel|*.dirdep) continue;; 266 C,*) 267 case "$path" in 268 /*) cwd=$path;; 269 *) cwd=`cd $cwd/$path 2> /dev/null && /bin/pwd`;; 270 esac 271 # watch out for temp dirs that no longer exist 272 test -d ${cwd:-/dev/null/no/such} || cwd=$CWD 273 eval cwd_$pid=$cwd 274 continue 275 ;; 276 F,*) # $path is new pid 277 eval cwd_$path=$cwd ldir_$path=$ldir 278 continue 279 ;; 280 *) dir=${path%/*} 281 case "$path" in 282 $src_re|$obj_re) ;; 283 /*/stage/*) ;; 284 /*) continue;; 285 *) for path in $ldir/$path $cwd/$path 286 do 287 test -e $path && break 288 done 289 dir=${path%/*} 290 ;; 291 esac 292 ;; 293 esac 294 # avoid repeating ourselves... 295 case "$DPDEPS,$seensrc," in 296 ,*) 297 case ",$seenit," in 298 *,$dir,*) continue;; 299 esac 300 ;; 301 *,$path,*) continue;; 302 esac 303 # canonicalize if needed 304 case "/$dir/" in 305 */../*|*/./*) 306 rdir=$dir 307 dir=`cd $dir 2> /dev/null && /bin/pwd` 308 seen="$rdir,$dir" 309 ;; 310 *) seen=$dir;; 311 esac 312 case "$dir" in 313 ${CURDIR:-.}|"") continue;; 314 $src_re) 315 # avoid repeating ourselves... 316 case "$DPDEPS,$seensrc," in 317 ,*) 318 case ",$seenit," in 319 *,$dir,*) continue;; 320 esac 321 ;; 322 esac 323 ;; 324 *) 325 case ",$seenit," in 326 *,$dir,*) continue;; 327 esac 328 ;; 329 esac 330 if [ -d $path ]; then 331 case "$path" in 332 */..) ldir=${dir%/*};; 333 *) ldir=$path;; 334 esac 335 continue 336 fi 337 [ -f $path ] || continue 338 case "$dir" in 339 $CWD) continue;; # ignore 340 $src_re) 341 seenit="$seenit,$seen" 342 echo $dir >> $tf.srcdep 343 case "$DPDEPS,$reldir,$seensrc," in 344 ,*) ;; 345 *) seensrc="$seensrc,$path" 346 echo "DPDEPS_$dir/${path##*/} += $RELDIR" >> $tf.dpdeps 347 ;; 348 esac 349 continue 350 ;; 351 esac 352 # if there is a .dirdep we cannot skip 353 # just because we've seen the dir before. 354 if [ -s $path.dirdep ]; then 355 # this file contains: 356 # '# ${RELDIR}.<machine>' 357 echo $path.dirdep >> $tf.qual 358 continue 359 elif [ -s $dir.dirdep ]; then 360 echo $dir.dirdep >> $tf.qual 361 seenit="$seenit,$seen" 362 continue 363 fi 364 seenit="$seenit,$seen" 365 case "$dir" in 366 $obj_re) 367 echo $dir;; 368 esac 369 done > $tf.dirdep 370 _nl=echo 371 for f in $tf.dirdep $tf.qual $tf.srcdep 372 do 373 [ -s $f ] || continue 374 case $f in 375 *qual) # a list of .dirdep files 376 # we can prefix everything with $OBJTOP to 377 # tell gendirdeps.mk that these are 378 # DIRDEP entries, since they are already 379 # qualified with .<machine> as needed. 380 # We strip .$MACHINE though 381 xargs cat < $f | sort -u | 382 sed "s,^# ,,;s,^,$OBJTOP/,;s,\.${TARGET_SPEC:-$MACHINE}\$,,;s,\.$MACHINE\$,," 383 ;; 384 *) sort -u $f;; 385 esac 386 _nl=: 387 done 388 if [ -s $tf.dpdeps ]; then 389 case "$DPDEPS" in 390 */*) ;; 391 *) echo > $DPDEPS;; # the echo is needed! 392 esac 393 sort -u $tf.dpdeps | 394 sed "s,${SRCTOP}/,,;s,${SB_BACKING_SB:-$SB}/src/,," >> $DPDEPS 395 fi 396 # ensure we produce _something_ else egrep -v gets upset 397 $_nl 398} 399 400case /$0 in 401*/meta2dep*) meta2deps "$@";; 402*/meta2dirs*) meta2dirs "$@";; 403*/meta2src*) meta2src "$@";; 404esac 405