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-rw-r--r--sysdeps/mach/hurd/sysd-stdio.c237
1 files changed, 237 insertions, 0 deletions
diff --git a/sysdeps/mach/hurd/sysd-stdio.c b/sysdeps/mach/hurd/sysd-stdio.c
new file mode 100644
index 0000000000..85dd04bad4
--- /dev/null
+++ b/sysdeps/mach/hurd/sysd-stdio.c
@@ -0,0 +1,237 @@
+/* Copyright (C) 1994, 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 <errno.h>
+#include <stdio.h>
+#include <sys/types.h>
+#include <hurd.h>
+#include <fcntl.h>
+#include <hurd/fd.h>
+
+
+/* Check ERR for wanting to generate a signal. */
+
+int __stdio_fileno (void *);
+
+static inline int
+fd_fail (struct hurd_fd *fd, error_t err)
+{
+ int signo = _hurd_fd_error_signal (err);
+ if (signo)
+ _hurd_raise_signal (NULL, signo, __stdio_fileno (fd), err);
+ errno = err;
+ return -1;
+}
+
+
+/* Read up to N chars into BUF from COOKIE.
+ Return how many chars were read, 0 for EOF or -1 for error. */
+ssize_t
+DEFUN(__stdio_read, (cookie, buf, n),
+ PTR cookie AND register char *buf AND size_t n)
+{
+ error_t err;
+ struct hurd_fd *fd = cookie;
+
+ if (! fd)
+ return __hurd_fail (EBADF);
+
+ if (err = _hurd_fd_read (fd, buf, &n))
+ return fd_fail (fd, err);
+
+ return n;
+}
+
+/* Write up to N chars from BUF to COOKIE.
+ Return how many chars were written or -1 for error. */
+ssize_t
+DEFUN(__stdio_write, (cookie, buf, n),
+ PTR cookie AND register CONST char *buf AND size_t n)
+{
+ error_t err;
+ size_t wrote, nleft;
+ struct hurd_fd *fd = cookie;
+
+ if (! fd)
+ return __hurd_fail (EBADF);
+
+ nleft = n;
+ do
+ {
+ wrote = nleft;
+ if (err = _hurd_fd_write (fd, buf, &wrote))
+ return fd_fail (fd, err);
+ buf += wrote;
+ nleft -= wrote;
+ } while (nleft > 0);
+
+ return wrote;
+}
+
+/* Move COOKIE's file position *POS bytes, according to WHENCE.
+ The current file position is stored in *POS.
+ Returns zero if successful, nonzero if not. */
+int
+DEFUN(__stdio_seek, (cookie, pos, whence),
+ PTR cookie AND fpos_t *pos AND int whence)
+{
+ error_t err;
+ struct hurd_fd *fd = cookie;
+ if (! fd)
+ return __hurd_fail (EBADF);
+ err = HURD_FD_PORT_USE (fd, __io_seek (port, *pos, whence, pos));
+ return err ? fd_fail (fd, err) : 0;
+}
+
+/* Close the file associated with COOKIE.
+ Return 0 for success or -1 for failure. */
+int
+DEFUN(__stdio_close, (cookie), PTR cookie)
+{
+ error_t error = cookie ? _hurd_fd_close (cookie) : EBADF;
+ return error ? fd_fail (cookie, error) : 0;
+}
+
+
+static inline int
+modeflags (__io_mode m)
+{
+ int flags = 0;
+ if (m.__read)
+ flags |= O_READ;
+ if (m.__write)
+ flags |= O_WRITE;
+ if (m.__append)
+ flags |= O_APPEND;
+ if (m.__create)
+ flags |= O_CREAT;
+ if (m.__truncate)
+ flags |= O_TRUNC;
+ if (m.__exclusive)
+ flags |= O_EXCL;
+ return flags;
+}
+
+/* Open FILENAME with the mode in M. */
+int
+DEFUN(__stdio_open, (filename, m, cookieptr),
+ CONST char *filename AND __io_mode m AND PTR *cookieptr)
+{
+ int flags;
+ file_t port;
+ struct hurd_fd *d;
+
+ flags = modeflags (m);
+ port = __file_name_lookup (filename, flags, 0666 & ~_hurd_umask);
+ if (port == MACH_PORT_NULL)
+ return -1;
+
+ HURD_CRITICAL_BEGIN;
+ d = _hurd_alloc_fd (NULL, 0);
+ if (d != NULL)
+ {
+ _hurd_port2fd (d, port, flags);
+ __spin_unlock (&d->port.lock);
+ }
+ HURD_CRITICAL_END;
+
+ *cookieptr = d;
+ return 0;
+}
+
+
+/* Open FILENAME with the mode in M. Use the same magic cookie
+ already in *COOKIEPTR if possible, closing the old cookie with CLOSEFN. */
+int
+DEFUN(__stdio_reopen, (filename, m, cookieptr),
+ CONST char *filename AND __io_mode m AND
+ PTR *cookieptr AND __io_close_fn closefn)
+{
+ int flags;
+ file_t port;
+ struct hurd_fd *d;
+
+ if (closefn != __stdio_close)
+ {
+ /* The old cookie is Not Of The Body.
+ Just close it and do a normal open. */
+ (*closefn) (*cookieptr);
+ return __stdio_open (filename, m, cookieptr);
+ }
+
+ /* Open a new port on the file. */
+ flags = modeflags (m);
+ port = __file_name_lookup (filename, flags, 0666 & ~_hurd_umask);
+
+ /* Install the new port in the same file descriptor slot the old cookie
+ points to. If opening the file failed, PORT will be MACH_PORT_NULL
+ and installing it in the descriptor will have the effect of closing
+ the old descriptor. */
+
+ d = *cookieptr;
+ HURD_CRITICAL_BEGIN;
+ __spin_lock (&d->port.lock);
+ _hurd_port2fd (d, port, flags);
+ __spin_unlock (&d->port.lock);
+ HURD_CRITICAL_END;
+
+ return port == MACH_PORT_NULL ? -1 : 0;
+}
+
+
+/* Write a message to the error output.
+ Try hard to make it really get out. */
+void
+DEFUN(__stdio_errmsg, (msg, len), CONST char *msg AND size_t len)
+{
+ io_t server;
+ mach_msg_type_number_t wrote;
+
+ server = __getdport (2);
+ __io_write (server, msg, len, -1, &wrote);
+ __mach_port_deallocate (__mach_task_self (), server);
+}
+
+
+/* Return the POSIX.1 file descriptor associated with COOKIE,
+ or -1 for errors. If COOKIE does not relate to any POSIX.1 file
+ descriptor, this should return -1 with errno set to EOPNOTSUPP. */
+int
+DEFUN(__stdio_fileno, (cookie), PTR cookie)
+{
+ int fd;
+
+ if (! cookie)
+ return __hurd_fail (EBADF);
+
+ __mutex_lock (&_hurd_dtable_lock);
+ for (fd = 0; fd < _hurd_dtablesize; ++fd)
+ if (_hurd_dtable[fd] == cookie)
+ {
+ __mutex_unlock (&_hurd_dtable_lock);
+ return fd;
+ }
+ __mutex_unlock (&_hurd_dtable_lock);
+
+ /* This should never happen, because this function should not be
+ installed as a stream's __fileno function unless that stream's cookie
+ points to a file descriptor. */
+ errno = EGRATUITOUS;
+ return -1;
+}