elf/ldd.bash.in

   1 #! @BASH@
   2
   3 # Copyright (C) 1996, 1997 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 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   --h | --he | --hel | --help)
  46     echo $"ldd [OPTION]... FILE...
  47       --help              print this help and exit
  48       --version           print version information and exit
  49   -d, --data-relocs       process data relocations
  50   -r, --function-relocs   process data and function relocations
  51   -v, --verbose           print all information
  52 Report bugs using the \`glibcbug' script to <bugs@gnu.org>."
  53     exit 0 ;;
  54   -d | --d | --da | --dat | --data | --data- | --data-r | --data-re | \
  55   --data-rel | --data-relo | --data-reloc | --data-relocs)
  56     warn=yes
  57     shift ;;
  58   -r | --f | --fu | --fun | --func | --funct | --functi | --functio | \
  59   --function | --function- | --function-r | --function-re | --function-rel | \
  60   --function-relo | --function-reloc | --function-relocs)
  61     warn=yes
  62     bind_now=yes
  63     shift ;;
  64   -v | --verb | --verbo | --verbos | --verbose)
  65     verbose=yes
  66     shift ;;
  67   --v | --ve | --ver)
  68     echo >&2 $"ldd: option \`$1' is ambiguous"
  69     exit 1 ;;
  70   --)           # Stop option processing.
  71     shift; break ;;
  72   -*)
  73     echo >&2 'ldd:' $"unrecognized option" "\`$1'"
  74     echo >&2 $"Try \`ldd --help' for more information."
  75     exit 1 ;;
  76   *)
  77     break ;;
  78   esac
  79 done
  80
  81 add_env="LD_TRACE_LOADED_OBJECTS=1 LD_WARN=$warn LD_BIND_NOW=$bind_now"
  82 add_env="$add_env LD_VERBOSE=$verbose"
  83 case $# in
  84 0)
  85   echo >&2 'ldd:' $"missing file arguments"
  86   echo >&2 $"Try \`ldd --help' for more information."
  87   exit 1 ;;
  88 1)
  89   # We don't list the file name when there is only one.
  90   case "$1" in
  91   */*) file="$1" ;;
  92   *) file="./$1" ;;
  93   esac
  94   if test ! -f "$file"; then
  95     echo "ldd: ${file}:" $"no such file"
  96     exit 1
  97   elif test -r "$file"; then
  98     test -x "$file" ||
  99     echo 'ldd:' $"warning: you do not have execution permission for" "\`$file'"
 100     ${RTLD} --verify "$file"
 101     case $? in
 102     0)
 103       eval $add_env exec '"$file"' || exit 1
 104       ;;
 105     1)
 106       echo $"   not a dynamic executable"
 107       exit 1
 108       ;;
 109     2)
 110       eval $add_env exec \${RTLD} '"$file"' || exit 1
 111       ;;
 112     *)
 113       echo 'ldd:' ${RTLD} $"exited with unknown exit code" "($?)" >&2
 114       exit 1
 115       ;;
 116     esac
 117   else
 118     echo 'ldd:' $"error: you do not have read permission for" "\`$file'"
 119     exit 1
 120   fi
 121   exit ;;
 122 *)
 123   result=0
 124   for file; do
 125     echo "${file}:"
 126     case "$file" in
 127     */*) : ;;
 128     *) file="./$file" ;;
 129     esac
 130     if test ! -f "$file"; then
 131       echo "ldd: ${file}:" $"no such file"
 132       result=1
 133     elif test -r "$file"; then
 134       test -x "$file" || echo 'ldd:' $"\
 135 warning: you do not have execution permission for" "\`$file'"
 136       ${RTLD} --verify "$file"
 137       case $? in
 138       0)
 139         eval $add_env '"$file"' || result=1
 140         ;;
 141       1)
 142         echo $" not a dynamic executable"
 143         result=1
 144         ;;
 145       2)
 146         eval $add_env ${RTLD} '"$file"' || result=1
 147         ;;
 148       *)
 149         echo 'ldd:' ${RTLD} $"exited with unknown exit code" "($?)" >&2
 150         exit 1
 151         ;;
 152       esac
 153     else
 154       echo 'ldd:' $"error: you do not have read permission for" "\`$file'"
 155       result=1
 156     fi
 157   done
 158 esac
 159
 160 exit $result
 161 # Local Variables:
 162 #  mode:ksh
 163 # End: