/* stdio on a Mach device port.
- Translates \n to \r on output.
+ Translates \n to \r\n on output, echos and translates \r to \n on input.
+ Copyright (C) 1992, 1993, 1994, 1996, 1997 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
-Copyright (C) 1992 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 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.
-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., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
-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 <mach.h>
-#include <mach/device.h>
+#include <device/device.h>
+#include <errno.h>
+#include <string.h>
static int
input (FILE *f)
{
- error_t err;
+ kern_return_t err;
char *buffer;
size_t to_read;
+ mach_msg_type_number_t nread;
char c;
if (f->__buffer == NULL)
f->__eof = 0;
- if (err = device_read_inband ((device_t) cookie, 0, f->__target, to_read,
- buffer, &nread))
+ nread = to_read;
+ err = device_read_inband ((device_t) f->__cookie, 0, f->__target,
+ to_read, buffer, &nread);
+
+ if (err)
{
f->__error = 1;
f->__bufp = f->__get_limit = f->__put_limit = f->__buffer;
return EOF;
}
+ /* Echo it back. */
+ err = device_write_inband ((device_t) f->__cookie, 0, f->__target,
+ buffer, nread, (int *) &to_read);
+
+ /* Translate LF to CR. */
+ {
+ char *p;
+ for (p = memchr (buffer, '\r', nread); p;
+ p = memchr (p + 1, '\r', (buffer + nread) - (p + 1)))
+ *p = '\n';
+ }
+
if (f->__buffer == NULL)
return (unsigned char) c;
f->__get_limit = f->__buffer + nread;
f->__bufp = f->__buffer;
f->__put_limit = f->__buffer + (f->__mode.__write ? f->__bufsize : 0);
- return (unsigned char *) *f->__bufp++;
+ return (unsigned char) *f->__bufp++;
}
+
+#if 0
static void
output (FILE *f, int c)
{
- error_t err;
- size_t to_write;
- char *p;
+ inline void write_some (const char *p, size_t to_write)
+ {
+ kern_return_t err;
+ int wrote;
+ while (to_write > 0)
+ {
+ if (err = device_write ((device_t) f->__cookie, 0,
+ f->__target, (char *)p,
+ to_write, &wrote))
+ {
+ errno = err;
+ f->__error = 1;
+ break;
+ }
+ p += wrote;
+ to_write -= wrote;
+ f->__target += wrote;
+ }
+ }
- if (f->__buffer == NULL)
+ if (f->__buffer != NULL)
{
- if (c != EOF)
+ if (f->__put_limit == f->__buffer)
{
- char cc = (unsigned char) c;
- int wrote;
- if (cc == '\n')
- cc = '\r';
- if ((err = device_write_inband ((device_t) f->__cookie, 0,
- f->__target, &cc, 1, &wrote)) ||
- wrote != 1)
+ /* Prime the stream for writing. */
+ f->__put_limit = f->__buffer + f->__bufsize;
+ f->__bufp = f->__buffer;
+ if (c != EOF)
+ {
+ *f->__bufp++ = (unsigned char) c;
+ c = EOF;
+ }
+ }
+
+
+ /* Write out the buffer. */
+
+ write_some (f->__buffer, f->__bufp - f->__buffer);
+
+ f->__bufp = f->__buffer;
+ }
+
+ if (c != EOF && !ferror (f))
+ {
+ if (f->__linebuf && (unsigned char) c == '\n')
+ {
+ static const char nl = '\n';
+ write_some (&nl, 1);
+ }
+ else
+ *f->__bufp++ = (unsigned char) c;
+ }
+}
+#endif
+
+
+static void
+output (FILE *f, int c)
+{
+ void write_some (const char *p, size_t to_write)
+ {
+ kern_return_t err;
+ int wrote;
+ int thiswrite;
+
+ while (to_write > 0)
+ {
+ thiswrite = to_write;
+ if (thiswrite > IO_INBAND_MAX)
+ thiswrite = IO_INBAND_MAX;
+
+ if (err = device_write_inband ((device_t) f->__cookie, 0,
+ f->__target, p, thiswrite, &wrote))
{
errno = err;
f->__error = 1;
+ break;
}
+ p += wrote;
+ to_write -= wrote;
+ f->__target += wrote;
+ }
+ }
+ void write_crlf (void)
+ {
+ static const char crlf[] = "\r\n";
+ write_some (crlf, 2);
+ }
+
+ if (f->__buffer == NULL)
+ {
+ /* The stream is unbuffered. */
+
+ if (c == '\n')
+ write_crlf ();
+ else if (c != EOF)
+ {
+ char cc = (unsigned char) c;
+ write_some (&cc, 1);
}
- ++f->__target;
+
return;
}
if (f->__put_limit == f->__buffer)
{
+ /* Prime the stream for writing. */
f->__put_limit = f->__buffer + f->__bufsize;
f->__bufp = f->__buffer;
if (c != EOF)
}
}
- to_write = f->__bufp - f->__buffer;
- p = f->__buffer;
- while (1)
- {
- char *p2 = memchr (p, '\n', to_write);
- if (p2 == NULL)
- break;
- *p2++ = '\r';
- to_write -= p2 - p;
- p = p2;
- }
+ {
+ /* Search for newlines (LFs) in the buffer. */
- to_write = f->__bufp - f->__buffer;
- p = f->__buffer;
- while (to_write > 0)
- {
- int wrote;
- if (err = device_write_inband ((device_t) f->__cookie, 0, f->__target,
- p, to_write, &wrote))
- {
- errno = EIO;
- f->__error = 1;
- break;
- }
- p += wrote;
- to_write -= wrote;
- f->__target += wrote;
- }
+ char *start = f->__buffer, *p = start;
+
+ while (!ferror (f) && (p = memchr (p, '\n', f->__bufp - start)))
+ {
+ /* Found one. Replace it with a CR and write out through that CR. */
+
+ *p = '\r';
+ write_some (start, p + 1 - start);
+
+ /* Change it back to an LF; the next iteration will write it out
+ first thing. Start the next searching iteration one char later. */
+
+ start = p;
+ *p++ = '\n';
+ }
+
+ /* Write the remainder of the buffer. */
+
+ if (!ferror (f))
+ write_some (start, f->__bufp - start);
+ }
f->__bufp = f->__buffer;
if (c != EOF && !ferror (f))
{
if (f->__linebuf && (unsigned char) c == '\n')
- {
- static const char nl = '\r';
- if ((err = device_write_inband ((device_t) f->__cookie, 0,
- f->__target, &nl, 1, &wrote)) ||
- wrote != 1)
- {
- errno = EIO;
- f->__error = 1;
- }
- else
- ++f->__target;
- }
+ write_crlf ();
else
*f->__bufp++ = (unsigned char) c;
}
}
+static int
+dealloc_ref (void *cookie)
+{
+ if (mach_port_deallocate (mach_task_self (), (mach_port_t) cookie))
+ {
+ errno = EINVAL;
+ return -1;
+ }
+ return 0;
+}
+
+
FILE *
-mach_open_devstream (device_t dev)
+mach_open_devstream (mach_port_t dev, const char *mode)
{
- FILE *stream = __newstream ();
+ FILE *stream;
+
+ if (mach_port_mod_refs (mach_task_self (), dev, MACH_PORT_RIGHT_SEND, 1))
+ {
+ errno = EINVAL;
+ return NULL;
+ }
+
+ stream = fopencookie ((void *) dev, mode, __default_io_functions);
if (stream == NULL)
- return NULL;
+ {
+ mach_port_deallocate (mach_task_self (), dev);
+ return NULL;
+ }
- stream->__cookie = (void *) dev;
stream->__room_funcs.__input = input;
stream->__room_funcs.__output = output;
- stream->__io_funcs.__close = device_close;
+ stream->__io_funcs.__close = dealloc_ref;
+ stream->__io_funcs.__seek = NULL; /* Cannot seek. */
+ stream->__io_funcs.__fileno = NULL; /* No corresponding POSIX.1 fd. */
stream->__seen = 1;
- retrun stream;
+ return stream;
}
projects / kopensolaris-gnu / glibc.git / blobdiff