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[thirdparty/glibc.git] / elf / ldd.bash.in

diff --git a/elf/ldd.bash.in b/elf/ldd.bash.in
index 100d2335d2be2519229800e9328027e0be07c1eb..843e352a6b97edf13d9cd24c2c62b004f99910d4 100644 (file)
--- a/elf/ldd.bash.in
+++ b/elf/ldd.bash.in
@@ -1,5 +1,5 @@
 #! @BASH@
-# Copyright (C) 1996-2004, 2005, 2006 Free Software Foundation, Inc.
+# Copyright (C) 1996-2019 Free Software Foundation, Inc.
 # This file is part of the GNU C Library.
 
 # The GNU C Library is free software; you can redistribute it and/or
@@ -13,9 +13,8 @@
 # Lesser General Public License for more details.
 
 # You should have received a copy of the GNU Lesser General Public
-# License along with the GNU C Library; if not, write to the Free
-# Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
-# 02111-1307 USA.
+# License along with the GNU C Library; if not, see
+# <https://www.gnu.org/licenses/>.
 
 
 # This is the `ldd' command, which lists what shared libraries are
@@ -35,11 +34,11 @@ verbose=
 while test $# -gt 0; do
   case "$1" in
   --vers | --versi | --versio | --version)
-    echo 'ldd (GNU libc) @VERSION@'
+    echo 'ldd @PKGVERSION@@VERSION@'
     printf $"Copyright (C) %s Free Software Foundation, Inc.
 This is free software; see the source for copying conditions.  There is NO
 warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-" "2006"
+" "2019"
     printf $"Written by %s and %s.
 " "Roland McGrath" "Ulrich Drepper"
     exit 0
@@ -52,8 +51,9 @@ warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
   -r, --function-relocs   process data and function relocations
   -u, --unused            print unused direct dependencies
   -v, --verbose           print all information
-For bug reporting instructions, please see:
-<http://www.gnu.org/software/libc/bugs.html>."
+"
+    printf $"For bug reporting instructions, please see:\\n%s.\\n" \
+      "@REPORT_BUGS_TO@"
     exit 0
     ;;
   -d | --d | --da | --dat | --data | --data- | --data-r | --data-re | \
@@ -106,19 +106,18 @@ if test "$unused" = yes; then
   add_env="$add_env LD_DEBUG=\"$LD_DEBUG${LD_DEBUG:+,}unused\""
 fi
 
-# The following use of cat is needed to make ldd work in SELinux
-# environments where the executed program might not have permissions
-# to write to the console/tty.  But only bash 3.x supports the pipefail
-# option, and we don't bother to handle the case for older bash versions.
-if set -o pipefail 2> /dev/null; then
-  try_trace() {
-    eval $add_env '"$@"' | cat
-  }
-else
-  try_trace() {
-    eval $add_env '"$@"'
-  }
-fi
+# The following command substitution is needed to make ldd work in SELinux
+# environments where the RTLD might not have permission to write to the
+# terminal.  The extra "x" character prevents the shell from trimming trailing
+# newlines from command substitution results.  This function is defined as a
+# subshell compound list (using "(...)") to prevent parameter assignments from
+# affecting the calling shell execution environment.
+try_trace() (
+  output=$(eval $add_env '"$@"' 2>&1; rc=$?; printf 'x'; exit $rc)
+  rc=$?
+  printf '%s' "${output%x}"
+  return $rc
+)
 
 case $# in
 0)
@@ -144,41 +143,27 @@ for file do
   *) file=./$file
      ;;
   esac
-  if test ! -f "$file"; then
+  if test ! -e "$file"; then
     echo "ldd: ${file}:" $"No such file or directory" >&2
     result=1
+  elif test ! -f "$file"; then
+    echo "ldd: ${file}:" $"not regular file" >&2
+    result=1
   elif test -r "$file"; then
     test -x "$file" || echo 'ldd:' $"\
 warning: you do not have execution permission for" "\`$file'" >&2
     RTLD=
+    ret=1
     for rtld in ${RTLDLIST}; do
       if test -x $rtld; then
        verify_out=`${rtld} --verify "$file"`
-        ret=$?
+       ret=$?
        case $ret in
        [02]) RTLD=${rtld}; break;;
        esac
       fi
     done
-    if test -z "${RTLD}"; then
-      set ${RTLDLIST}
-      RTLD=$1
-      verify_out=`${RTLD} --verify "$file"`
-      ret=$?
-    fi
     case $ret in
-    0)
-      # If the program exits with exit code 5, it means the process has been
-      # invoked with __libc_enable_secure.  Fall back to running it through
-      # the dynamic linker.
-      try_trace "$file"
-      rc=$?
-      if [ $rc = 5 ]; then
-       try_trace "$RTLD" "$file"
-       rc=$?
-      fi
-      [ $rc = 0 ] || result=1
-      ;;
     1)
       # This can be a non-ELF binary or no binary at all.
       nonelf "$file" || {
@@ -186,7 +171,7 @@ warning: you do not have execution permission for" "\`$file'" >&2
        result=1
       }
       ;;
-    2)
+    0|2)
       try_trace "$RTLD" "$file" || result=1
       ;;
     *)