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Diffstat (limited to 'sysdeps/mach/hurd/stdio_init.c')
-rw-r--r--sysdeps/mach/hurd/stdio_init.c63
1 files changed, 63 insertions, 0 deletions
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 <ansidecl.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <unistd.h>
+#include <hurd/fd.h>
+#include <hurd/io.h>
+#include <hurd/term.h>
+
+/* 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;
+}