elf/ldd.bash.in

   1 #! @BASH@
   2
   3 # Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
   4 # This file is part of the GNU C Library.
   5
   6 # The GNU C Library is free software; you can redistribute it and/or
   7 # modify it under the terms of the GNU Library General Public License as
   8 # published by the Free Software Foundation; either version 2 of the
   9 # License, or (at your option) any later version.
  10
  11 # The GNU C Library is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14 # Library General Public License for more details.
  15
  16 # You should have received a copy of the GNU Library General Public
  17 # License along with the GNU C Library; see the file COPYING.LIB.  If not,
  18 # write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  19 # Boston, MA 02111-1307, USA.
  20
  21
  22 # This is the `ldd' command, which lists what shared libraries are
  23 # used by given dynamically-linked executables.  It works by invoking the
  24 # run-time dynamic linker as a command and setting the environment
  25 # variable LD_TRACE_LOADED_OBJECTS to a non-empty value.
  26
  27 # We should be able to find the translation right at the beginning.
  28 TEXTDOMAIN=libc
  29 TEXTDOMAINDIR=@TEXTDOMAINDIR@
  30
  31 RTLD=@RTLD@
  32 warn=
  33 bind_now=
  34 verbose=
  35
  36 while test $# -gt 0; do
  37   case "$1" in
  38   --vers | --versi | --versio | --version)
  39     echo 'ldd (GNU libc) @VERSION@'
  40     echo $"Copyright (C) 1996, 1997, 1998 Free Software Foundation, Inc.
  41 This is free software; see the source for copying conditions.  There is NO
  42 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
  43 Written by Roland McGrath and Ulrich Drepper."
  44     exit 0
  45     ;;
  46   --h | --he | --hel | --help)
  47     echo $"ldd [OPTION]... FILE...
  48       --help              print this help and exit
  49       --version           print version information and exit
  50   -d, --data-relocs       process data relocations
  51   -r, --function-relocs   process data and function relocations
  52   -v, --verbose           print all information
  53 Report bugs using the \`glibcbug' script to <bugs@gnu.org>."
  54     exit 0
  55     ;;
  56   -d | --d | --da | --dat | --data | --data- | --data-r | --data-re | \
  57   --data-rel | --data-relo | --data-reloc | --data-relocs)
  58     warn=yes
  59     shift
  60     ;;
  61   -r | --f | --fu | --fun | --func | --funct | --functi | --functio | \
  62   --function | --function- | --function-r | --function-re | --function-rel | \
  63   --function-relo | --function-reloc | --function-relocs)
  64     warn=yes
  65     bind_now=yes
  66     shift
  67     ;;
  68   -v | --verb | --verbo | --verbos | --verbose)
  69     verbose=yes
  70     shift
  71     ;;
  72   --v | --ve | --ver)
  73     echo >&2 $"ldd: option \`$1' is ambiguous"
  74     exit 1
  75     ;;
  76   --)           # Stop option processing.
  77     shift; break
  78     ;;
  79   -*)
  80     echo >&2 'ldd:' $"unrecognized option" "\`$1'"
  81     echo >&2 $"Try \`ldd --help' for more information."
  82     exit 1
  83     ;;
  84   *)
  85     break
  86     ;;
  87   esac
  88 done
  89
  90 nonelf ()
  91 {
  92   # Maybe extra code for non-ELF binaries.
  93   return 1;
  94 }
  95
  96 add_env="LD_TRACE_LOADED_OBJECTS=1 LD_WARN=$warn LD_BIND_NOW=$bind_now"
  97 add_env="$add_env LD_VERBOSE=$verbose"
  98 case $# in
  99 0)
 100   echo >&2 'ldd:' $"missing file arguments"
 101   echo >&2 $"Try \`ldd --help' for more information."
 102   exit 1
 103   ;;
 104 1)
 105   # We don't list the file name when there is only one.
 106   case "$1" in
 107   */*) file="$1"
 108        ;;
 109   *) file="./$1"
 110      ;;
 111   esac
 112   if test ! -f "$file"; then
 113     echo "ldd: ${file}:" $"no such file"
 114     exit 1
 115   elif test -r "$file"; then
 116     test -x "$file" ||
 117     echo 'ldd:' $"\
 118 warning: you do not have execution permission for" "\`$file'" >&2
 119     verify_out=`${RTLD} --verify "$file"`
 120     case $? in
 121     0)
 122       eval $add_env exec '"$file"' || exit 1
 123       ;;
 124     1)
 125       # This can be a non-ELF binary or no binary at all.
 126       nonelf $file ||
 127       echo $"   not a dynamic executable"
 128       exit 1
 129       ;;
 130     2)
 131       eval $add_env exec \${RTLD} '"$file"' || exit 1
 132       ;;
 133     *)
 134       echo 'ldd:' ${RTLD} $"exited with unknown exit code" "($?)" >&2
 135       exit 1
 136       ;;
 137     esac
 138   else
 139     echo 'ldd:' $"error: you do not have read permission for" "\`$file'" >&2
 140     exit 1
 141   fi
 142   exit
 143   ;;
 144 *)
 145   result=0
 146   for file; do
 147     echo "${file}:"
 148     case "$file" in
 149     */*) :
 150          ;;
 151     *) file="./$file"
 152        ;;
 153     esac
 154     if test ! -f "$file"; then
 155       echo "ldd: ${file}:" $"no such file"
 156       result=1
 157     elif test -r "$file"; then
 158       test -x "$file" || echo 'ldd:' $"\
 159 warning: you do not have execution permission for" "\`$file'" >&2
 160       verify_out=`${RTLD} --verify "$file"`
 161       case $? in
 162       0)
 163         eval $add_env '"$file"' || result=1
 164         ;;
 165       1)
 166         # This can be a non-ELF binary or no binary at all.
 167         nonelf $file || {
 168           echo $"       not a dynamic executable"
 169           result=1
 170         }
 171         ;;
 172       2)
 173         eval $add_env ${RTLD} '"$file"' || result=1
 174         ;;
 175       *)
 176         echo 'ldd:' ${RTLD} $"exited with unknown exit code" "($?)" >&2
 177         exit 1
 178         ;;
 179       esac
 180     else
 181       echo 'ldd:' $"error: you do not have read permission for" "\`$file'" >&2
 182       result=1
 183     fi
 184   done
 185 esac
 186
 187 exit $result
 188 # Local Variables:
 189 #  mode:ksh
 190 # End: