327 lines
9.8 KiB
Bash
Executable File
327 lines
9.8 KiB
Bash
Executable File
#!/bin/sh -efu
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#
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# Copyright (C) 2000-2006,2008 Dmitry V. Levin <ldv@altlinux.org>
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# Copyright (C) 2007-2010 Alexey Tourbin <at@altlinux.org>
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#
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. @RPMCONFIGDIR@/functions
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dump_ld_config='@RPMCONFIGDIR@/dump_ld_config'
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shlib_req='@RPMCONFIGDIR@/shlib.req.awk'
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elf_ldd='@RPMCONFIGDIR@/ldd'
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[ -n "${RPM_LIBDIR-}" ] || RPM_LIBDIR=`rpm --eval %_libdir`
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[ -n "${RPM_LIB-}" ] || RPM_LIB=`rpm --eval %_lib`
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[ -n "${RPM_ARCH-}" ] || RPM_ARCH=`rpm --eval %_arch`
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RPM_FINDREQ_RPATH="/$RPM_LIB $RPM_LIBDIR $("$dump_ld_config")"
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[ -z "${RPM_BUILD_ROOT-}" ] ||
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RPM_FINDREQ_RPATH="$("$dump_ld_config" '' "$RPM_BUILD_ROOT") $RPM_FINDREQ_RPATH"
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Debug "RPM_FINDREQ_RPATH=$RPM_FINDREQ_RPATH"
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. @RPMCONFIGDIR@/tmpdir.sh
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>"$tmpdir"/lib2dep
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>"$tmpdir"/sym2lib
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>"$tmpdir"/versioned
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LibReq()
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{
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local f="$1"
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local fname="${f#${RPM_BUILD_ROOT-}}"
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# Obtain objdump info.
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local dump
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if ! dump=$(objdump -p "$f"); then
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Warning "$f: objdump failed"
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return 0
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fi
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# Obtain ELF segments.
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local segments
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if ! segments=$(readelf -Wl "$f"); then
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Warning "$f: readelf failed"
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return 0
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fi
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# Interp.
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local interp
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interp="$(printf '%s\n' "$segments" |
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sed -ne 's,^[[:space:]]*\[Requesting program interpreter: \(/[^]]\+\)\]$,\1,p')"
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[ -z "$interp" ] ||
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printf '%s\n' "$interp"
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# GNU_HASH.
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if printf '%s\n' "$segments" |
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egrep -qs '[[:space:]]\.gnu\.hash([[:space:]]|$)' &&
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! printf '%s\n' "$segments" |
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egrep -qs '[[:space:]]\.hash([[:space:]]|$)'; then
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echo 'rtld(GNU_HASH)'
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fi
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# GNU_IFUNC and GNU_UNIQUE.
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readelf --wide --dyn-syms "$f" |awk '+$1&&($4=="IFUNC"||$5=="UNIQUE")' >"$tmpdir"/gnu-syms
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if [ -s "$tmpdir"/gnu-syms ]; then
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if LC_ALL=C fgrep -qs ' IFUNC ' "$tmpdir"/gnu-syms; then
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echo 'rtld(GNU_IFUNC)'
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fi
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if LC_ALL=C fgrep -qs ' UNIQUE ' "$tmpdir"/gnu-syms; then
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echo 'rtld(GNU_UNIQUE)'
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fi
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fi
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# That could be "statically linked (uses shared libs)".
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printf '%s\n' "$dump" |grep -qs '^Dynamic Section:$' || return 0
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# The rest is soname stuff.
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local braces canon_prefix deps dir name pathname prefix rpath suffix v vers
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suffix="$(printf '%s\n' "$dump" |sed -ne 's/^.*file format \(elf64\).*$/(64bit)/p')"
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[ -z "$suffix" ] && braces= || braces='()'
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rpath="$(printf %s "$dump" |
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awk '($1=="RPATH"||$1=="RUNPATH"){print $2}' |
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tr -s : ' ' |
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sed -e "s|\$ORIGIN|${fname%/*}|g")"
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if [ -n "$rpath" ]; then
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rpath="$rpath $RPM_FINDREQ_RPATH"
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else
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rpath="$RPM_FINDREQ_RPATH"
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fi
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rpath="$(printf %s "$rpath" |
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tr -s '[:space:]' '\n' |
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grep -v '^$' |
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LANG=C uniq |
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sed -e "s|^|${RPM_BUILD_ROOT-}&|" |
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tr -s '[:space:]' : |
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sed -e 's/^:\+//; s/:\+$//')"
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deps="$("$elf_ldd" -- "$f" "$rpath")" || return 1
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# Shared library dependencies, version references.
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rm -rf "$tmpdir"/a
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mkdir "$tmpdir"/a
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for vers in `printf '%s\n' "$dump" |"$shlib_req"`; do
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name="$(printf %s "$vers" |cut -d: -f1)"
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vers="$(printf %s "$vers" |cut -d: -f2-)"
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pathname="$(printf %s "$deps" |awk "-vname=$name" '
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function basename(f) { sub("^.*/","",f); return f; }
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NF>=3 && ($1==name || basename($1)==name) && $2=="=>" && $3~"^/" {print $3}
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NF==2 && ($1==name || basename($1)==name) && $1~"^/" && $2~"^[(]0x" {print $1}
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')"
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if [ -z "$pathname" ]; then
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Warning "$fname: library $name not found"
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continue
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fi
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local orig_pathname="$pathname"
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pathname=$(CanonPath "$pathname")
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Verbose "$fname: $name -> $pathname"
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local under_buildroot=
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if [ -n "${RPM_BUILD_ROOT-}" ] && [ -z "${pathname##$RPM_BUILD_ROOT*}" ]; then
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pathname=${pathname#$RPM_BUILD_ROOT}
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under_buildroot=1
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fi
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prefix="${pathname%/*}"
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canon_prefix="$(printf %s "$prefix/" |
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sed -e 's|/tls/|/|' -e 's|/sse2/|/|' -e "s|/$RPM_ARCH/|/|" -e 's|/i[3-9]86/|/|' -e 's|/\+$||')"
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if [ -z "$canon_prefix" -o -n "${canon_prefix##/*}" ]; then
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Warning "$fname: library $name not found"
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continue
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fi
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for dir in $RPM_FINDREQ_RPATH; do
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if [ "$canon_prefix" = "$dir" ]; then
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prefix=
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break
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fi
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done
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[ -z "$prefix" ] || prefix="$prefix/"
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local filedep=
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if [ -n "$prefix" ]; then
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if [ -n "$under_buildroot" ]; then
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filedep=1
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elif [ -z "$vers" ]; then
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filedep=1
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fi
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fi
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if [ -n "$filedep" ]; then
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printf '%s\n' "$pathname"
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printf '%s\n' "$orig_pathname" >>"$tmpdir"/a/flib
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continue
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fi
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# Postpone main requires entry.
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local dep="$(printf '%s%s%s%s\n' "$prefix" "$name" "$braces" "$suffix")"
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printf '%s\t%s\n' "$orig_pathname" "$dep" >>"$tmpdir"/a/lib2dep
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# Print versioned references.
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v=
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for v in `printf %s "$vers" |tr : ' '`; do
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printf '%s%s(%s)%s\n' "$prefix" "$name" "$v" "$suffix"
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done
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# Remember versioned sonames.
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if [ -n "$v" ]; then
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printf '%s\n' "$dep" |
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LC_ALL=C sort -u -m -o "$tmpdir"/versioned{,} -
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fi
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done
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[ -s "$tmpdir"/a/lib2dep ] || return 0
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# Deal with symbols.
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$elf_ldd --bindings -- "$f" "$rpath" 2>&1 |
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LC_ALL=C fgrep "binding file $f [" |
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awk '($4!=$7){print$11"\t"$7}' |
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sed -e "s/[\`']//g" >"$tmpdir"/a/sym2lib
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if ! [ -s "$tmpdir"/a/sym2lib ]; then
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Warning "$f: no symbol bindings"
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return 0
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fi
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# Diagnose overlinking.
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cut -f1 "$tmpdir"/a/lib2dep >"$tmpdir"/a/lib1
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if [ -s "$tmpdir"/a/flib ]; then
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cat "$tmpdir"/a/flib >>"$tmpdir"/a/lib1
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fi
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LC_ALL=C sort -u -o "$tmpdir"/a/lib1{,}
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cut -f2 "$tmpdir"/a/sym2lib >"$tmpdir"/a/lib2
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LC_ALL=C sort -u -o "$tmpdir"/a/lib2{,}
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local libs
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libs=$(LC_ALL=C comm -23 "$tmpdir"/a/lib{1,2} )
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if [ -n "$libs" ]; then
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# extra libraries from objdump
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Warning "$f: overlinked libraries:" $libs
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fi
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# Exclude weak undefined symbols.
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nm -D "$f" |awk 'NF==2&&($1=="w"||$1=="v"){print$2}' >"$tmpdir"/a/weak
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if [ -s "$tmpdir"/a/weak ]; then
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LC_ALL=C sort -u -o "$tmpdir"/a/weak{,}
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LC_ALL=C sort -u -o "$tmpdir"/a/sym2lib{,}
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LC_ALL=C join -t$'\t' -v1 -o 1.1,1.2 "$tmpdir"/a/{sym2lib,weak} >"$tmpdir"/a/sym2lib+
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mv -f "$tmpdir"/a/sym2lib{+,}
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cut -f2 "$tmpdir"/a/sym2lib >"$tmpdir"/a/lib2
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LC_ALL=C sort -u -o "$tmpdir"/a/lib2{,}
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fi
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# Diagnose underlinking.
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libs=$(LC_ALL=C comm -13 "$tmpdir"/a/lib{1,2} )
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if [ -n "$libs" ]; then
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# extra libraries from ldd
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Warning "$f: underlinked libraries:" $libs
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fi
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# Append.
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LC_ALL=C sort -t$'\t' -u -k1,1 -k2,2 -o "$tmpdir"/a/lib2dep{,}
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LC_ALL=C sort -t$'\t' -u -k2,2 -k1,1 -o "$tmpdir"/a/sym2lib{,}
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LC_ALL=C sort -t$'\t' -m -u -k1,1 -k2,2 -o "$tmpdir"/lib2dep{,} "$tmpdir"/a/lib2dep
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LC_ALL=C sort -t$'\t' -m -u -k2,2 -k1,1 -o "$tmpdir"/sym2lib{,} "$tmpdir"/a/sym2lib
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}
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ProvidedSymbols()
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{
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readelf --wide --dyn-syms "$1" |
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awk '+$1 && NF>=8 &&
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# dl-lookup.c: /st_value
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($2!="00000000" && $2!="0000000000000000" || $4=="TLS") &&
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# dl-lookup.c: /st_shndx
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($7!="UND") &&
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# dl-lookup.c: /ALLOWED_STT
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($4=="NOTYPE" || $4=="OBJECT" || $4 == "FUNC" || $4=="COMMON" || $4=="TLS" || $4=="IFUNC") &&
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# dl-lookup.c: /hidden
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($6=="DEFAULT" || $6=="PROTECTED") &&
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# dl-lookup.c: /switch.*ST_BIND
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($5=="GLOBAL" || $5=="WEAK" || $5 == "UNIQUE") &&
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# Ignore special symbols found in each library:
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($8!="__bss_start" && $8!="_edata" && $8!="_end" && $8!="_fini" && $8!="_init") {
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sym = $8
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# No symbol versioning yet.
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ix = index(sym, "@")
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if (ix > 1)
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sym = substr(sym, 0, ix-1)
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print sym
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}' |
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LC_ALL=C sort -u
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}
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SuggestBPP()
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{
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# For the number of symbols in the range 2^{m-1}..2^m-1,
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# use m+10 bits per symbol. Upper bound on the error rate
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# is 2^{-10} (about 0.1%).
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perl -le 'print int log(shift) / log(2) + 11' "$1"
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}
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ArgvFileAction LibReq "$@"
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[ -s "$tmpdir"/lib2dep ] || exit 0
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# Some standard libraries which use symbol versioning.
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cat >"$tmpdir"/stddep <<EOF
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libc.so.6
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libc.so.6()(64bit)
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libpthread.so.0
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libpthread.so.0()(64bit)
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libm.so.6
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libm.so.6()(64bit)
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libdl.so.2
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libdl.so.2()(64bit)
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libgcc_s.so.1
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libgcc_s.so.1()(64bit)
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libstdc++.so.6
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libstdc++.so.6()(64bit)
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EOF
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# Some non-standard symbols found in standard libraries.
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cat >"$tmpdir"/nonstdsym <<EOF
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strlcat
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strlcpy
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EOF
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while IFS=$'\t' read -r lib dep; do
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ENABLE_SET_VERSIONS=1
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if [ -z "$ENABLE_SET_VERSIONS" ]; then
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LC_ALL=C fgrep -qs -x -e "$dep" "$tmpdir"/versioned ||
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printf '%s\n' "$dep"
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continue
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fi
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# Deal with bpp.
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provsym=$(ProvidedSymbols "$lib")
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if [ -n "$provsym" ]; then
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provn=$(printf '%s\n' "$provsym" |wc -l)
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bpp=$(SuggestBPP "$provn")
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else
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Warning "$lib provides no symbols"
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bpp=10
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fi
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# Deal with required symbols.
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reqsym=$(printf '%s\n' "$lib" |LC_ALL=C join -t$'\t' -12 -o 1.1 "$tmpdir"/sym2lib -)
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if [ -z "$reqsym" ]; then
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LC_ALL=C fgrep -qs -x -e "$dep" "$tmpdir"/versioned ||
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printf '%s\n' "$dep"
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continue
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fi
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# Handle standard libraries.
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if LC_ALL=C fgrep -qs -x -e "$dep" "$tmpdir"/stddep; then
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if ! reqsym=$(printf '%s\n' "$reqsym" |LC_ALL=C fgrep -x -f "$tmpdir"/nonstdsym); then
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LC_ALL=C fgrep -qs -x -e "$dep" "$tmpdir"/versioned ||
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printf '%s\n' "$dep"
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continue
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fi
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fi
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# See if this dep is provided.
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if [ -z "${lib##${RPM_BUILD_ROOT:-foo}/*}" ] ||
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rpmquery --whatprovides --provides -- "$dep" |LC_ALL=C fgrep -qs -e "$dep = set:"; then
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: good
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else
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Warning "$dep is not yet set-versioned"
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LC_ALL=C fgrep -qs -x -e "$dep" "$tmpdir"/versioned ||
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printf '%s\n' "$dep"
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continue
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fi
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# Make set-versioned soname dependency.
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#printf '%s\n' "$reqsym" |LC_ALL=C sort -c -u
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set=$(printf '%s\n' "$reqsym" |@RPMCONFIGDIR@/mkset "$bpp")
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printf '%s >= %s\n' "$dep" "$set"
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done <"$tmpdir"/lib2dep
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