commit 038bfe01796f751001e02de41c5d8678f511f366

Author: Michal Marek <mmarek@suse.com>

Date:   Sat Sep 10 23:13:24 2016 +0200

    find-debuginfo.sh: Split directory traversal and debuginfo extraction

    This siplifies the handling of hardlinks a bit and allows a later patch

    to parallelize the debuginfo extraction.

    Signed-off-by: Michal Marek <mmarek@suse.com>

diff --git a/scripts/find-debuginfo.sh b/scripts/find-debuginfo.sh

index d83c3e2..6dcd5a4 100644

--- a/scripts/find-debuginfo.sh

+++ b/scripts/find-debuginfo.sh

@@ -283,32 +283,36 @@

 strict_error=ERROR

 $strict || strict_error=WARNING

-# Strip ELF binaries

+temp=$(mktemp -d ${TMPDIR:-/tmp}/find-debuginfo.XXXXXX)

+trap 'rm -rf "$temp"' EXIT

+

+# Build a list of unstripped ELF files and their hardlinks

+touch "$temp/primary"

 find "$RPM_BUILD_ROOT" ! -path "${debugdir}/*.debug" -type f \

      		     \( -perm -0100 -or -perm -0010 -or -perm -0001 \) \

 		     -print |

 file -N -f - | sed -n -e 's/^\(.*\):[ 	]*.*ELF.*, not stripped.*/\1/p' |

 xargs --no-run-if-empty stat -c '%h %D_%i %n' |

 while read nlinks inum f; do

-  get_debugfn "$f"

-  [ -f "${debugfn}" ] && continue

-

-  # If this file has multiple links, keep track and make

-  # the corresponding .debug files all links to one file too.

   if [ $nlinks -gt 1 ]; then

-    eval linked=\$linked_$inum

-    if [ -n "$linked" ]; then

-      eval id=\$linkedid_$inum

-      link=$debugfn

-      get_debugfn "$linked"

-      echo "hard linked $link to $debugfn"

-      mkdir -p "$(dirname "$link")" && ln -nf "$debugfn" "$link"

+    var=seen_$inum

+    if test -n "${!var}"; then

+      echo "$inum $f" >>"$temp/linked"

       continue

     else

-      eval linked_$inum=\$f

-      echo "file $f has $[$nlinks - 1] other hard links"

+      read "$var" < <(echo 1)

     fi

   fi

+  echo "$nlinks $inum $f" >>"$temp/primary"

+done

+

+# Strip ELF binaries

+do_file()

+{

+  local nlinks=$1 inum=$2 f=$3 id link linked

+

+  get_debugfn "$f"

+  [ -f "${debugfn}" ] && return

   echo "extracting debug info from $f"

   build_id_seed=

@@ -328,9 +332,6 @@

   fi

   id=$(${lib_rpm_dir}/debugedit -b $debug_base_name -d $debug_dest_name \

 	       $no_recompute -i $build_id_seed -l "$SOURCEFILE" "$f") || exit

-  if [ $nlinks -gt 1 ]; then

-    eval linkedid_$inum=\$id

-  fi

   if [ -z "$id" ]; then

     echo >&2 "*** ${strict_error}: No build ID note found in $f"

     $strict && exit 2

@@ -376,7 +377,21 @@

   echo "./${f#$RPM_BUILD_ROOT}" >> "$ELFBINSFILE"

-done || exit

+  # If this file has multiple links, make the corresponding .debug files

+  # all links to one file too.

+  if [ $nlinks -gt 1 ]; then

+    grep "^$inum " "$temp/linked" | while read inum linked; do

+      link=$debugfn

+      get_debugfn "$linked"

+      echo "hard linked $link to $debugfn"

+      mkdir -p "$(dirname "$debugfn")" && ln -nf "$link" "$debugfn"

+    done

+  fi

+}

+

+while read nlinks inum f; do

+  do_file "$nlinks" "$inum" "$f"

+done <"$temp/primary"

 # Invoke the DWARF Compressor utility.

 if $run_dwz \