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
  35 while test $# -gt 0; do
  36   case "$1" in
  37   --v | --ve | --ver | --vers | --versi | --versio | --version)
  38     echo $"ldd (GNU libc) @VERSION@
  39 Copyright (C) 1996, 1997 Free Software Foundation, Inc.
  40 This is free software; see the source for copying conditions.  There is NO
  41 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
  42     exit 0 ;;
  43   --h | --he | --hel | --help)
  44     echo $"ldd [OPTION]... FILE...
  45       --help              print this help and exit
  46       --version           print version information and exit
  47   -d, --data-relocs       process data relocations
  48   -r, --function-relocs   process data and function relocations
  49 Report bugs using the \`glibcbug' script to <bugs@gnu.ai.mit.edu>."
  50     exit 0 ;;
  51   -d | --d | --da | --dat | --data | --data- | --data-r | --data-re | \
  52   --data-rel | --data-relo | --data-reloc | --data-relocs)
  53     warn=yes
  54     shift ;;
  55   -r | --f | --fu | --fun | --func | --funct | --functi | --functio | \
  56   --function | --function- | --function-r | --function-re | --function-rel | \
  57   --function-relo | --function-reloc | --function-relocs)
  58     warn=yes
  59     bind_now=yes
  60     shift ;;
  61   --)           # Stop option processing.
  62     shift; break ;;
  63   -*)
  64     echo >&2 $"ldd: unrecognized option" "\`$1'"
  65     echo >&2 $"Try \`ldd --help' for more information."
  66     exit 1 ;;
  67   *)
  68     break ;;
  69   esac
  70 done
  71
  72 add_env="LD_TRACE_LOADED_OBJECTS=1 LD_WARN=$warn LD_BIND_NOW=$bind_now"
  73 case $# in
  74 0)
  75   echo >&2 $"ldd: missing file arguments"
  76   echo >&2 $"Try \`ldd --help' for more information."
  77   exit 1 ;;
  78 1)
  79   # We don't list the file name when there is only one.
  80   case "$1" in
  81   /*) file="$1" ;;
  82   *) file="./$1" ;;
  83   esac
  84   if test ! -f "$file"; then
  85     echo "ldd: ${file}:" $"no such file"
  86     exit 1
  87   elif test -r "$file"; then
  88     test -x "$file" ||
  89     echo $"ldd: warning: you do not have execution permission for" "\`$file'"
  90     ${RTLD} --verify "$file"
  91     case $? in
  92     0)
  93       eval $add_env exec '"$file"' || exit 1
  94       ;;
  95     1)
  96       echo $"   not a dynamic executable"
  97       exit 1
  98       ;;
  99     2)
 100       eval $add_env exec \${RTLD} '"$file"' || exit 1
 101       ;;
 102     *)
 103       echo $"ldd: ${RTLD} exited with unknown exit code ($?)" >&2
 104       exit 1
 105       ;;
 106     esac
 107   else
 108     echo $"ldd: error: you do not have read permission for" "\`$file'"
 109     exit 1
 110   fi
 111   exit ;;
 112 *)
 113   result=0
 114   for file; do
 115     echo "${file}:"
 116     case "$file" in
 117     /*) : ;;
 118     *) file="./$file" ;;
 119     esac
 120     if test ! -f "$file"; then
 121       echo "ldd: ${file}:" $"no such file"
 122       result=1
 123     elif test -r "$file"; then
 124       test -x "$file" || echo $"\
 125 ldd: warning: you do not have execution permission for" "\`$file'"
 126       ${RTLD} --verify "$file"
 127       case $? in
 128       0)
 129         eval $add_env '"$file"' || result=1
 130         ;;
 131       1)
 132         echo $" not a dynamic executable"
 133         result=1
 134         ;;
 135       2)
 136         eval $add_env ${RTLD} '"$file"' || result=1
 137         ;;
 138       *)
 139         echo $"ldd: ${RTLD} exited with unknown exit code ($?)" >&2
 140         exit 1
 141         ;;
 142       esac
 143     else
 144       echo $"ldd: error: you do not have read permission for" "\`$file'"
 145       result=1
 146     fi
 147   done
 148 esac
 149
 150 exit $result
 151 # Local Variables:
 152 #  mode:ksh
 153 # End: