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 1.14 2020/10/02 03:11:17 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 144error() { 145 echo "ERROR: $@" >&2 146 exit 1 147} 148 149meta2deps() { 150 DPDEPS= 151 SRCTOPS=$SRCTOP 152 OBJROOTS= 153 EXCLUDES= 154 while : 155 do 156 case "$1" in 157 *=*) eval export "$1"; shift;; 158 -a) MACHINE_ARCH=$2; shift 2;; 159 -m) MACHINE=$2; shift 2;; 160 -C) CURDIR=$2; shift 2;; 161 -H) HOST_TARGET=$2; shift 2;; 162 -S) add_list SRCTOPS $2; shift 2;; 163 -O) add_list OBJROOTS $2; shift 2;; 164 -X) add_list EXCLUDES '|' $2; shift 2;; 165 -R) RELDIR=$2; shift 2;; 166 -T) TARGET_SPEC=$2; shift 2;; 167 *) break;; 168 esac 169 done 170 171 _th= _o= 172 case "$MACHINE" in 173 host) _ht=$HOST_TARGET;; 174 esac 175 176 for o in $OBJROOTS 177 do 178 case "$MACHINE,/$o/" in 179 host,*$HOST_TARGET*) ;; 180 *$MACHINE*|*${TARGET_SPEC:-$MACHINE}*) ;; 181 *) add_list _o $o; continue;; 182 esac 183 for x in $_ht $TARGET_SPEC $MACHINE 184 do 185 case "$o" in 186 "") continue;; 187 */$x/) add_list _o ${o%$x/}; o=;; 188 */$x) add_list _o ${o%$x}; o=;; 189 *$x/) add_list _o ${o%$x/}; o=;; 190 *$x) add_list _o ${o%$x}; o=;; 191 esac 192 done 193 done 194 OBJROOTS="$_o" 195 196 case "$OBJTOP" in 197 "") 198 for o in $OBJROOTS 199 do 200 OBJTOP=$o${TARGET_SPEC:-$MACHINE} 201 break 202 done 203 ;; 204 esac 205 src_re= 206 obj_re= 207 add_list '|' -s '/*' src_re $SRCTOPS 208 add_list '|' -s '*' obj_re $OBJROOTS 209 210 [ -z "$RELDIR" ] && unset DPDEPS 211 tf=/tmp/m2d$$-$USER 212 rm -f $tf.* 213 trap 'rm -f $tf.*; trap 0' 0 214 215 > $tf.dirdep 216 > $tf.qual 217 > $tf.srcdep 218 > $tf.srcrel 219 > $tf.dpdeps 220 221 seenit= 222 seensrc= 223 lpid= 224 case "$EXCLUDES" in 225 "") _excludes=cat;; 226 *) _excludes=_excludes_f;; 227 esac 228 # handle @list files 229 case "$@" in 230 *@[!.]*) 231 for f in "$@" 232 do 233 case "$f" in 234 *.meta) cat $f;; 235 @*) xargs cat < ${f#@};; 236 *) cat $f;; 237 esac 238 done 239 ;; 240 *) cat /dev/null "$@";; 241 esac 2> /dev/null | 242 sed -e 's,^CWD,C C,;/^[CREFLMV] /!d' -e "s,',,g" | 243 $_excludes | ( version=no 244 while read op pid path junk 245 do 246 : op=$op pid=$pid path=$path 247 # we track cwd and ldir (of interest) per pid 248 # CWD is bmake's cwd 249 case "$lpid,$pid" in 250 ,C) CWD=$path cwd=$path ldir=$path 251 if [ -z "$SB" ]; then 252 SB=`echo $CWD | sed 's,/obj.*,,'` 253 fi 254 SRCTOP=${SRCTOP:-$SB/src} 255 case "$verion" in 256 no) ;; # ignore 257 0) error "no filemon data";; 258 *) ;; 259 esac 260 version=0 261 continue 262 ;; 263 $pid,$pid) ;; 264 *) 265 case "$lpid" in 266 "") ;; 267 *) eval ldir_$lpid=$ldir;; 268 esac 269 eval ldir=\${ldir_$pid:-$CWD} cwd=\${cwd_$pid:-$CWD} 270 lpid=$pid 271 ;; 272 esac 273 274 case "$op,$path" in 275 V,*) version=$path; continue;; 276 W,*srcrel|*.dirdep) continue;; 277 C,*) 278 case "$path" in 279 /*) cwd=$path;; 280 *) cwd=`cd $cwd/$path 2> /dev/null && /bin/pwd`;; 281 esac 282 # watch out for temp dirs that no longer exist 283 test -d ${cwd:-/dev/null/no/such} || cwd=$CWD 284 eval cwd_$pid=$cwd 285 continue 286 ;; 287 F,*) # $path is new pid 288 eval cwd_$path=$cwd ldir_$path=$ldir 289 continue 290 ;; 291 *) dir=${path%/*} 292 case "$path" in 293 $src_re|$obj_re) ;; 294 /*/stage/*) ;; 295 /*) continue;; 296 *) for path in $ldir/$path $cwd/$path 297 do 298 test -e $path && break 299 done 300 dir=${path%/*} 301 ;; 302 esac 303 ;; 304 esac 305 # avoid repeating ourselves... 306 case "$DPDEPS,$seensrc," in 307 ,*) 308 case ",$seenit," in 309 *,$dir,*) continue;; 310 esac 311 ;; 312 *,$path,*) continue;; 313 esac 314 # canonicalize if needed 315 case "/$dir/" in 316 */../*|*/./*) 317 rdir=$dir 318 dir=`cd $dir 2> /dev/null && /bin/pwd` 319 seen="$rdir,$dir" 320 ;; 321 *) seen=$dir;; 322 esac 323 case "$dir" in 324 ${CURDIR:-.}|"") continue;; 325 $src_re) 326 # avoid repeating ourselves... 327 case "$DPDEPS,$seensrc," in 328 ,*) 329 case ",$seenit," in 330 *,$dir,*) continue;; 331 esac 332 ;; 333 esac 334 ;; 335 *) 336 case ",$seenit," in 337 *,$dir,*) continue;; 338 esac 339 ;; 340 esac 341 if [ -d $path ]; then 342 case "$path" in 343 */..) ldir=${dir%/*};; 344 *) ldir=$path;; 345 esac 346 continue 347 fi 348 [ -f $path ] || continue 349 case "$dir" in 350 $CWD) continue;; # ignore 351 $src_re) 352 seenit="$seenit,$seen" 353 echo $dir >> $tf.srcdep 354 case "$DPDEPS,$reldir,$seensrc," in 355 ,*) ;; 356 *) seensrc="$seensrc,$path" 357 echo "DPDEPS_$dir/${path##*/} += $RELDIR" >> $tf.dpdeps 358 ;; 359 esac 360 continue 361 ;; 362 esac 363 # if there is a .dirdep we cannot skip 364 # just because we've seen the dir before. 365 if [ -s $path.dirdep ]; then 366 # this file contains: 367 # '# ${RELDIR}.<machine>' 368 echo $path.dirdep >> $tf.qual 369 continue 370 elif [ -s $dir.dirdep ]; then 371 echo $dir.dirdep >> $tf.qual 372 seenit="$seenit,$seen" 373 continue 374 fi 375 seenit="$seenit,$seen" 376 case "$dir" in 377 $obj_re) 378 echo $dir;; 379 esac 380 done > $tf.dirdep 381 case "$version" in 382 0) error "no filemon data";; 383 esac ) || exit 1 384 _nl=echo 385 for f in $tf.dirdep $tf.qual $tf.srcdep 386 do 387 [ -s $f ] || continue 388 case $f in 389 *qual) # a list of .dirdep files 390 # we can prefix everything with $OBJTOP to 391 # tell gendirdeps.mk that these are 392 # DIRDEP entries, since they are already 393 # qualified with .<machine> as needed. 394 # We strip .$MACHINE though 395 xargs cat < $f | sort -u | 396 sed "s,^# ,,;s,^,$OBJTOP/,;s,\.${TARGET_SPEC:-$MACHINE}\$,,;s,\.$MACHINE\$,," 397 ;; 398 *) sort -u $f;; 399 esac 400 _nl=: 401 done 402 if [ -s $tf.dpdeps ]; then 403 case "$DPDEPS" in 404 */*) ;; 405 *) echo > $DPDEPS;; # the echo is needed! 406 esac 407 sort -u $tf.dpdeps | 408 sed "s,${SRCTOP}/,,;s,${SB_BACKING_SB:-$SB}/src/,," >> $DPDEPS 409 fi 410 # ensure we produce _something_ else egrep -v gets upset 411 $_nl 412} 413 414case /$0 in 415*/meta2dep*) meta2deps "$@";; 416*/meta2dirs*) meta2dirs "$@";; 417*/meta2src*) meta2src "$@";; 418esac 419