131 lines
3.5 KiB
C
131 lines
3.5 KiB
C
/* Copyright (C) 1992 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public License as
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published by the Free Software Foundation; either version 2 of the
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License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with the GNU C Library; see the file COPYING.LIB. If
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not, write to the Free Software Foundation, Inc., 675 Mass Ave,
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Cambridge, MA 02139, USA. */
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#include <ansidecl.h>
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#include <errno.h>
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#include <fcntl.h>
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#include <stdarg.h>
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#include <hurd.h>
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/* Open FILE with access OFLAG. If OFLAG includes O_CREAT,
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a third argument is the file protection. */
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int
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DEFUN(__open, (file, oflag), CONST char *file AND int oflag DOTS)
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{
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error_t err;
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mode_t mode;
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int fl;
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io_t port, ctty;
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switch (oflag & O_ACCMODE)
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{
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case O_RDONLY:
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fl = FS_LOOKUP_READ;
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break;
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case O_WRONLY:
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fl = FS_LOOKUP_WRITE;
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break;
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case O_RDWR:
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fl = FS_LOOKUP_READ | FS_LOOKUP_WRITE;
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break;
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default:
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errno = EINVAL;
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return -1;
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}
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if (oflag & O_CREAT)
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{
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va_list arg;
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va_start (arg, oflag);
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mode = va_arg (arg, mode_t);
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va_end (arg);
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fl |= FS_LOOKUP_CREATE;
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}
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else
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mode = 0;
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if (oflag & O_NDELAY)
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fl |= FS_LOOKUP_NDELAY;
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if (oflag & O_APPEND)
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fl |= FS_LOOKUP_APPEND;
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if (oflag & O_CREATE)
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fl |= FS_LOOKUP_CREATE;
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if (oflag & O_TRUNC)
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fl |= FS_LOOKUP_TRUNC;
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if (oflag & O_EXCL)
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fl |= FS_LOOKUP_EXCL;
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port = __path_lookup (file, fl, mode);
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if (port == MACH_PORT_NULL)
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return -1;
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ctty = MACH_PORT_NULL;
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if (!(oflag & O_NOCTTY))
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{
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io_statbuf_t stb;
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err = __io_stat (port, &stb);
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if (!err)
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{
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io_t fg_port = MACH_PORT_NULL;
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__mutex_lock (&_hurd_ctty_lock);
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if (_hurd_ctty_fstype == 0)
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{
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/* We have no controlling tty.
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Try to make this it. */
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mach_port_t cttyid;
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err = __term_getctty (port, &cttyid);
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if (!err)
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{
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err = __term_become_ctty (port, _hurd_pid, _hurd_pgrp,
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_hurd_sigport, &fg_port);
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if (err)
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__mach_port_deallocate (__mach_task_self (), cttyid);
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}
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}
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else if (stb.stb_fstype == _hurd_ctty_fstype &&
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stb.stb_fsid.val[0] == _hurd_ctty_fsid.val[0] &&
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stb.stb_fsid.val[1] == _hurd_ctty_fsid.val[1] &&
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stb.stb_fileno == _hurd_ctty_fileno)
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/* This is our controlling tty. */
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err = __term_become_ctty (port, _hurd_pid, _hurd_pgrp,
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_hurd_sigport, &fg_port);
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if (fg_port != MACH_PORT_NULL)
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{
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int fd = _hurd_dalloc (fg_port, port, 0);
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if (fd >= 0 && _hurd_ctty_fstype == 0)
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{
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/* We have a new controlling tty. */
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_hurd_ctty_port = cttyid;
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_hurd_ctty_fstype = stb.stb_fstype;
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_hurd_ctty_fsid = stb.stb_fsid;
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_hurd_ctty_fileno = stb.stb_fileno;
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}
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__mutex_unlock (&_hurd_ctty_lock);
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return fd;
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}
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else
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__mutex_unlock (&_hurd_ctty_lock);
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}
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}
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return _hurd_dalloc (port, MACH_PORT_NULL, 0);
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}
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