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authorMichael Koch <mkoch@gcc.gnu.org>2004-07-17 13:46:02 +0000
committerMichael Koch <mkoch@gcc.gnu.org>2004-07-17 13:46:02 +0000
commitbaa61e09ef6f62433f337ccac6c99845e6fe2322 (patch)
treee3b46bce712fc96cd55d5375844c9ae031cde8eb /libjava/gnu/java
parent3e25b3a8f80447b0ce191d1742b292b7b1fd2e5c (diff)
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[multiple changes]
2004-07-17 Mark Wielaard <mark@klomp.org> * gnu/java/nio/channels/FileChannelImpl.java (truncate): Only truncate when size is smaller. * java/io/RandomAccessFile.java (setLength): Use truncate for shrinking the file and seek plus write for expanding the file. 2004-07-17 Michael Koch <konqueror@gmx.de> * gnu/java/nio/channels/natFileChannelPosix.cc (implTruncate): Always save current position. Only reposition file pointer to where we started if not beyond new lenght. Reposition file pointer to file length if it points beyond the end of file. From-SVN: r84868
Diffstat (limited to 'libjava/gnu/java')
-rw-r--r--libjava/gnu/java/nio/channels/FileChannelImpl.java4
-rw-r--r--libjava/gnu/java/nio/channels/natFileChannelPosix.cc5
2 files changed, 7 insertions, 2 deletions
diff --git a/libjava/gnu/java/nio/channels/FileChannelImpl.java b/libjava/gnu/java/nio/channels/FileChannelImpl.java
index 8b3d0fc86b3..678e10f2349 100644
--- a/libjava/gnu/java/nio/channels/FileChannelImpl.java
+++ b/libjava/gnu/java/nio/channels/FileChannelImpl.java
@@ -422,7 +422,9 @@ public final class FileChannelImpl extends FileChannel
if ((mode & WRITE) == 0)
throw new NonWritableChannelException ();
- implTruncate (size);
+ if (size < size ())
+ implTruncate (size);
+
return this;
}
}
diff --git a/libjava/gnu/java/nio/channels/natFileChannelPosix.cc b/libjava/gnu/java/nio/channels/natFileChannelPosix.cc
index b8f99378834..a2c1c7962b0 100644
--- a/libjava/gnu/java/nio/channels/natFileChannelPosix.cc
+++ b/libjava/gnu/java/nio/channels/natFileChannelPosix.cc
@@ -274,7 +274,10 @@ FileChannelImpl::implTruncate (jlong size)
}
else
{
- if (::ftruncate (fd, (off_t) pos))
+ if (::ftruncate (fd, (off_t) size))
+ throw new IOException (JvNewStringLatin1 (strerror (errno)));
+ if (pos > size
+ && ::lseek (fd, (off_t) size, SEEK_SET) == -1)
throw new IOException (JvNewStringLatin1 (strerror (errno)));
pos = size;
}