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Annotation of libaitio/src/pty.c, revision 1.1.2.1

1.1.2.1 ! misho       1: /*************************************************************************
        !             2: * (C) 2011 AITNET ltd - Sofia/Bulgaria - <misho@aitbg.com>
        !             3: *  by Michael Pounov <misho@openbsd-bg.org>
        !             4: *
        !             5: * $Author: misho $
        !             6: * $Id: aitsess.c,v 1.3 2011/09/07 13:11:56 misho Exp $
        !             7: *
        !             8: **************************************************************************
        !             9: The ELWIX and AITNET software is distributed under the following
        !            10: terms:
        !            11: 
        !            12: All of the documentation and software included in the ELWIX and AITNET
        !            13: Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org>
        !            14: 
        !            15: Copyright 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011
        !            16:        by Michael Pounov <misho@elwix.org>.  All rights reserved.
        !            17: 
        !            18: Redistribution and use in source and binary forms, with or without
        !            19: modification, are permitted provided that the following conditions
        !            20: are met:
        !            21: 1. Redistributions of source code must retain the above copyright
        !            22:    notice, this list of conditions and the following disclaimer.
        !            23: 2. Redistributions in binary form must reproduce the above copyright
        !            24:    notice, this list of conditions and the following disclaimer in the
        !            25:    documentation and/or other materials provided with the distribution.
        !            26: 3. All advertising materials mentioning features or use of this software
        !            27:    must display the following acknowledgement:
        !            28: This product includes software developed by Michael Pounov <misho@elwix.org>
        !            29: ELWIX - Embedded LightWeight unIX and its contributors.
        !            30: 4. Neither the name of AITNET nor the names of its contributors
        !            31:    may be used to endorse or promote products derived from this software
        !            32:    without specific prior written permission.
        !            33: 
        !            34: THIS SOFTWARE IS PROVIDED BY AITNET AND CONTRIBUTORS ``AS IS'' AND
        !            35: ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            36: IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            37: ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            38: FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            39: DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            40: OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            41: HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            42: LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            43: OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            44: SUCH DAMAGE.
        !            45: */
        !            46: #include "global.h"
        !            47: 
        !            48: 
        !            49: /*
        !            50:  * ioAllocPTY() Allocate new PTY
        !            51:  * @ptyfd = master fd, pty
        !            52:  * @ttyfd = slave fd, tty
        !            53:  * @name = tty device name if not null
        !            54:  * @namesiz = name length, must be above 63 bytes.
        !            55:  * @term = termios for terminal
        !            56:  * @winz = winsize for terminal
        !            57:  * return: -1 error or 0 ok
        !            58:  */
        !            59: inline int
        !            60: ioAllocPTY(int *ptyfd, int *ttyfd, char * __restrict name, int namesiz, 
        !            61:                struct termios * __restrict term, struct winsize * __restrict winz)
        !            62: {
        !            63:        assert(ptyfd && ttyfd);
        !            64:        if (!ptyfd || !ttyfd || (name && namesiz < 64)) {
        !            65:                io_SetErr(EINVAL, "Error:: invalid arguments ...");
        !            66:                return -1;
        !            67:        }
        !            68: 
        !            69:        memset(name, 0, namesiz);
        !            70:        if (openpty(ptyfd, ttyfd, name, term, winz) == -1) {
        !            71:                LOGERR;
        !            72:                return -1;
        !            73:        }
        !            74: 
        !            75:        return 0;
        !            76: }
        !            77: 
        !            78: /*
        !            79:  * ioFreePTY() Release PTY
        !            80:  * @ttyname = tty filename
        !            81:  * return: none
        !            82:  */
        !            83: inline void
        !            84: ioFreePTY(const char *ttyname)
        !            85: {
        !            86:        assert(ttyname);
        !            87:        if (!ttyname)
        !            88:                return;
        !            89: 
        !            90:        chown(ttyname, (uid_t) 0, (gid_t) 0);
        !            91:        chmod(ttyname, (mode_t) 0666);
        !            92: }