From 0148e1ee90a9cec90cbd0b32b99cf532eaae9699 Mon Sep 17 00:00:00 2001
From: Tom Tromey <tromey@redhat.com>
Date: Thu, 29 Aug 2002 18:05:15 +0000
Subject: [PATCH] natFileDescriptorPosix.cc (setLength): Handle case where
 ftruncate is missing.

	* java/io/natFileDescriptorPosix.cc (setLength): Handle case where
	ftruncate is missing.
	* configure, include/config.h.in: Rebuilt.
	* acconfig.h (HAVE_FTRUNCATE): Mention.
	* configure.in: Check for ftruncate.

From-SVN: r56658
---
 libjava/ChangeLog                         | 8 ++++++++
 libjava/acconfig.h                        | 1 +
 libjava/configure                         | 4 ++--
 libjava/configure.in                      | 2 +-
 libjava/include/config.h.in               | 4 ++++
 libjava/java/io/natFileDescriptorPosix.cc | 4 ++++
 6 files changed, 20 insertions(+), 3 deletions(-)

diff --git a/libjava/ChangeLog b/libjava/ChangeLog
index 8d8f248bed3a..a00a4db5f900 100644
--- a/libjava/ChangeLog
+++ b/libjava/ChangeLog
@@ -1,3 +1,11 @@
+2002-08-29  Tom Tromey  <tromey@redhat.com>
+
+	* java/io/natFileDescriptorPosix.cc (setLength): Handle case where
+	ftruncate is missing.
+	* configure, include/config.h.in: Rebuilt.
+	* acconfig.h (HAVE_FTRUNCATE): Mention.
+	* configure.in: Check for ftruncate.
+
 2002-08-29  Tom Tromey  <tromey@redhat.com>
 
 	* include/jvm.h (struct _Jv_frame_info): New structure.
diff --git a/libjava/acconfig.h b/libjava/acconfig.h
index bd02d33c16f9..308f71ebdec6 100644
--- a/libjava/acconfig.h
+++ b/libjava/acconfig.h
@@ -107,6 +107,7 @@
 #undef HAVE_READDIR_R
 #undef HAVE_GETHOSTBYNAME_R
 #undef HAVE_GETHOSTBYADDR_R
+#undef HAVE_FTRUNCATE
 
 /* Define if you want a bytecode interpreter.  */
 #undef INTERPRETER
diff --git a/libjava/configure b/libjava/configure
index cb4425d07ded..20b1836aa479 100755
--- a/libjava/configure
+++ b/libjava/configure
@@ -3734,7 +3734,7 @@ else
 fi
 done
 
-   for ac_func in fork execvp pipe sigaction
+   for ac_func in fork execvp pipe sigaction ftruncate
 do
 echo $ac_n "checking for $ac_func""... $ac_c" 1>&6
 echo "configure:3741: checking for $ac_func" >&5
@@ -7730,7 +7730,7 @@ cat >> $CONFIG_STATUS <<\EOF
 
 # Split the substitutions into bite-sized pieces for seds with
 # small command number limits, like on Digital OSF/1 and HP-UX.
-ac_max_sed_cmds=90 # Maximum number of lines to put in a sed script.
+ac_max_sed_cmds=60 # Maximum number of lines to put in a sed script.
 ac_file=1 # Number of current file.
 ac_beg=1 # First line for current file.
 ac_end=$ac_max_sed_cmds # Line after last line for current file.
diff --git a/libjava/configure.in b/libjava/configure.in
index 752739ba2651..93437c685b78 100644
--- a/libjava/configure.in
+++ b/libjava/configure.in
@@ -507,7 +507,7 @@ else
    AC_CHECK_FUNCS(nl_langinfo setlocale)
    AC_CHECK_FUNCS(inet_aton inet_addr, break)
    AC_CHECK_FUNCS(inet_pton uname inet_ntoa)
-   AC_CHECK_FUNCS(fork execvp pipe sigaction)
+   AC_CHECK_FUNCS(fork execvp pipe sigaction ftruncate)
    AC_CHECK_HEADERS(execinfo.h unistd.h dlfcn.h) 
    AC_CHECK_FUNC(backtrace, [
      case "$host" in
diff --git a/libjava/include/config.h.in b/libjava/include/config.h.in
index 266d6e3032dd..f75f74f0318f 100644
--- a/libjava/include/config.h.in
+++ b/libjava/include/config.h.in
@@ -132,6 +132,7 @@
 #undef HAVE_READDIR_R
 #undef HAVE_GETHOSTBYNAME_R
 #undef HAVE_GETHOSTBYADDR_R
+#undef HAVE_FTRUNCATE
 
 /* Define if you want a bytecode interpreter.  */
 #undef INTERPRETER
@@ -201,6 +202,9 @@
 /* Define if you have the ftime function.  */
 #undef HAVE_FTIME
 
+/* Define if you have the ftruncate function.  */
+#undef HAVE_FTRUNCATE
+
 /* Define if you have the getcwd function.  */
 #undef HAVE_GETCWD
 
diff --git a/libjava/java/io/natFileDescriptorPosix.cc b/libjava/java/io/natFileDescriptorPosix.cc
index 9f4c7c3cb1dc..9929c3021f74 100644
--- a/libjava/java/io/natFileDescriptorPosix.cc
+++ b/libjava/java/io/natFileDescriptorPosix.cc
@@ -195,6 +195,7 @@ java::io::FileDescriptor::setLength (jlong pos)
   struct stat sb;
   off_t orig;
 
+#ifdef HAVE_FTRUNCATE
   if (::fstat (fd, &sb))
     throw new IOException (JvNewStringLatin1 (strerror (errno)));
 
@@ -219,6 +220,9 @@ java::io::FileDescriptor::setLength (jlong pos)
     }
   else if (::ftruncate (fd, (off_t) pos))
     throw new IOException (JvNewStringLatin1 (strerror (errno)));
+#else /* HAVE_FTRUNCATE */
+  throw new IOException (JvNewStringLatin1 ("FileDescriptor.setLength not implemented"));
+#endif /* HAVE_FTRUNCATE */
 }
 
 jint