From 28f540f45bbacd939bfd07f213bcad2bf730b1bf Mon Sep 17 00:00:00 2001 From: Roland McGrath Date: Sat, 18 Feb 1995 01:27:10 +0000 Subject: initial import --- sysdeps/mach/hurd/stdio_init.c | 63 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 sysdeps/mach/hurd/stdio_init.c (limited to 'sysdeps/mach/hurd/stdio_init.c') diff --git a/sysdeps/mach/hurd/stdio_init.c b/sysdeps/mach/hurd/stdio_init.c new file mode 100644 index 0000000000..f083ee85dc --- /dev/null +++ b/sysdeps/mach/hurd/stdio_init.c @@ -0,0 +1,63 @@ +/* Copyright (C) 1995 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 +modify it under the terms of the GNU Library General Public License as +published by the Free Software Foundation; either version 2 of the +License, or (at your option) any later version. + +The GNU C Library is distributed in the hope that it will be useful, +but WITHOUT ANY WARRANTY; without even the implied warranty of +MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +Library General Public License for more details. + +You should have received a copy of the GNU Library General Public +License along with the GNU C Library; see the file COPYING.LIB. If +not, write to the Free Software Foundation, Inc., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#include +#include +#include +#include +#include +#include +#include +#include + +/* Initialize STREAM as necessary. + This may change I/O functions, give a buffer, etc. + If no buffer is allocated, but the bufsize is set, + the bufsize will be used to allocate the buffer. */ +void +DEFUN(__stdio_init_stream, (stream), FILE *stream) +{ + struct hurd_fd *const d = stream->__cookie; + struct stat statb; + error_t err; + + if (stream->__buffer != NULL || stream->__userbuf) + /* If's unbuffered by request, we can't do anything useful. */ + return; + + /* Find out what sort of file this is. */ + if (err = HURD_FD_PORT_USE (d, __io_stat (port, &statb))) + return; + + if (S_ISCHR (statb.st_mode)) + { + /* It's a character device. + Make it line-buffered if it's a terminal. */ + mach_port_t cttyid; + err = HURD_FD_PORT_USE (d, __term_getctty (port, &cttyid)); + if (! err) + { + __mach_port_deallocate (__mach_task_self (), cttyid); + stream->__linebuf = 1; + } + } + + /* Use the block-size field to determine + the system's optimal buffering size. */ + stream->__bufsize = statb.st_blksize; +} -- cgit 1.4.1