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-rw-r--r--ChangeLog5
-rw-r--r--libio/fileops.c4
2 files changed, 8 insertions, 1 deletions
diff --git a/ChangeLog b/ChangeLog
index 162bbae..df99b84 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,5 +1,10 @@
2008-07-26 Ulrich Drepper <drepper@redhat.com>
+ [BZ #6771]
+ * libio/fileops.c (_IO_new_file_attach): Preserve errno around
+ success call of _IO_SEEKOFF or calls which failed because the
+ descriptor is for a pipe.
+
* sunrpc/key_call.c (getkeyserv_handle): Use FD_CLOEXEC instead of
magic number.
diff --git a/libio/fileops.c b/libio/fileops.c
index 95cd2d6..f5b25699 100644
--- a/libio/fileops.c
+++ b/libio/fileops.c
@@ -1,4 +1,4 @@
-/* Copyright (C) 1993, 1995, 1997-2005, 2006, 2007
+/* Copyright (C) 1993, 1995, 1997-2005, 2006, 2007, 2008
Free Software Foundation, Inc.
This file is part of the GNU C Library.
Written by Per Bothner <bothner@cygnus.com>.
@@ -428,9 +428,11 @@ _IO_new_file_attach (fp, fd)
/* Get the current position of the file. */
/* We have to do that since that may be junk. */
fp->_offset = _IO_pos_BAD;
+ int save_errno = errno;
if (_IO_SEEKOFF (fp, (_IO_off64_t)0, _IO_seek_cur, _IOS_INPUT|_IOS_OUTPUT)
== _IO_pos_BAD && errno != ESPIPE)
return NULL;
+ errno = save_errno;
return fp;
}
INTDEF2(_IO_new_file_attach, _IO_file_attach)