Update.

Update.

2002-01-07  Ulrich Drepper  <drepper@redhat.com>

	* libio/fileops.c (_IO_file_underflow_mmap): New function.
	(_IO_file_close_mmap): New function.
	(_IO_file_jumps_mmap): New variable.
	* libio/wfileops.c (_IO_wfile_underflow): Reset read pointer before
	trying to convert rest of byte buffer.
	(_IO_wfile_underflow_mmap): New function.
	(_IO_wfile_jumps_mmap): New variable.
	* libio/iofopen.c (__fopen_maybe_mmap): New function.
	(__fopen_internal): New function.  Split out from _IO_new_fopen.
	(_IO_new_fopen): Call __fopen_internal.
	* libio/iofopen64.c: Just call __fopen_internal.
	* libio/iofdopen.c: Call __fopen_maybe_mmap before returning
	successfully.
	* libio/iolibio.h: Declare __fopen_internal and __fopen_maybe_mmap.
	* libio/libioP.h: Declare _IO_file_jumps_mmap, _IO_wfile_jumps_mmap,
	_IO_file_close_mmap.

	* sysdeps/gnu/_G_config.h: Define _G_MMAP64.
	* sysdeps/unix/sysv/linux/cris/_G_config.h: Likewise.

	* stdio-common/Makefile (tests): Add tst-rndseek.
	* stdio-common/tst-rndseek.c: New file.