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- /* 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 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 <fcntl.h>
- #include <stdarg.h>
- #include <hurd.h>
-
- /* Open FILE with access OFLAG. If OFLAG includes O_CREAT,
- a third argument is the file protection. */
- int
- DEFUN(__open, (file, oflag), CONST char *file AND int oflag DOTS)
- {
- error_t err;
- mode_t mode;
- int fl;
- io_t port, ctty;
-
- switch (oflag & O_ACCMODE)
- {
- case O_RDONLY:
- fl = FS_LOOKUP_READ;
- break;
- case O_WRONLY:
- fl = FS_LOOKUP_WRITE;
- break;
- case O_RDWR:
- fl = FS_LOOKUP_READ | FS_LOOKUP_WRITE;
- break;
- default:
- errno = EINVAL;
- return -1;
- }
-
- if (oflag & O_CREAT)
- {
- va_list arg;
- va_start (arg, oflag);
- mode = va_arg (arg, mode_t);
- va_end (arg);
- fl |= FS_LOOKUP_CREATE;
- }
- else
- mode = 0;
-
- if (oflag & O_NDELAY)
- fl |= FS_LOOKUP_NDELAY;
- if (oflag & O_APPEND)
- fl |= FS_LOOKUP_APPEND;
- if (oflag & O_CREATE)
- fl |= FS_LOOKUP_CREATE;
- if (oflag & O_TRUNC)
- fl |= FS_LOOKUP_TRUNC;
- if (oflag & O_EXCL)
- fl |= FS_LOOKUP_EXCL;
-
- port = __path_lookup (file, fl, mode);
- if (port == MACH_PORT_NULL)
- return -1;
-
- ctty = MACH_PORT_NULL;
- if (!(oflag & O_NOCTTY))
- {
- io_statbuf_t stb;
-
- err = __io_stat (port, &stb);
- if (!err)
- {
- io_t fg_port = MACH_PORT_NULL;
-
- __mutex_lock (&_hurd_ctty_lock);
- if (_hurd_ctty_fstype == 0)
- {
- /* We have no controlling tty.
- Try to make this it. */
- mach_port_t cttyid;
- err = __term_getctty (port, &cttyid);
- if (!err)
- {
- err = __term_become_ctty (port, _hurd_pid, _hurd_pgrp,
- _hurd_sigport, &fg_port);
- if (err)
- __mach_port_deallocate (__mach_task_self (), cttyid);
- }
- }
- else if (stb.stb_fstype == _hurd_ctty_fstype &&
- stb.stb_fsid.val[0] == _hurd_ctty_fsid.val[0] &&
- stb.stb_fsid.val[1] == _hurd_ctty_fsid.val[1] &&
- stb.stb_fileno == _hurd_ctty_fileno)
- /* This is our controlling tty. */
- err = __term_become_ctty (port, _hurd_pid, _hurd_pgrp,
- _hurd_sigport, &fg_port);
-
- if (fg_port != MACH_PORT_NULL)
- {
- int fd = _hurd_dalloc (fg_port, port, 0);
- if (fd >= 0 && _hurd_ctty_fstype == 0)
- {
- /* We have a new controlling tty. */
- _hurd_ctty_port = cttyid;
- _hurd_ctty_fstype = stb.stb_fstype;
- _hurd_ctty_fsid = stb.stb_fsid;
- _hurd_ctty_fileno = stb.stb_fileno;
- }
- __mutex_unlock (&_hurd_ctty_lock);
- return fd;
- }
- else
- __mutex_unlock (&_hurd_ctty_lock);
- }
- }
-
- return _hurd_dalloc (port, MACH_PORT_NULL, 0);
- }
-