Return to atomicio.c CVS log

Up to [local] / src / usr.bin / ssh

Annotation of src/usr.bin/ssh/atomicio.c, Revision 1.11

1.1       deraadt     1: /*
1.9       deraadt     2:  * Copyright (c) 1995,1999 Theo de Raadt.  All rights reserved.
1.1       deraadt     3:  * All rights reserved.
                      4:  *
                      5:  * Redistribution and use in source and binary forms, with or without
                      6:  * modification, are permitted provided that the following conditions
                      7:  * are met:
                      8:  * 1. Redistributions of source code must retain the above copyright
                      9:  *    notice, this list of conditions and the following disclaimer.
                     10:  * 2. Redistributions in binary form must reproduce the above copyright
                     11:  *    notice, this list of conditions and the following disclaimer in the
                     12:  *    documentation and/or other materials provided with the distribution.
                     13:  *
                     14:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
                     15:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
                     16:  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
                     17:  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
                     18:  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
                     19:  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
                     20:  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
                     21:  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
                     22:  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
                     23:  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
                     24:  */
                     25:
                     26: #include "includes.h"
1.11    ! deraadt    27: RCSID("$OpenBSD: atomicio.c,v 1.10 2001/05/08 22:48:07 markus Exp $");
1.1       deraadt    28:
1.8       markus     29: #include "atomicio.h"
1.1       deraadt    30:
                     31: /*
                     32:  * ensure all of data on socket comes through. f==read || f==write
                     33:  */
1.2       d          34: ssize_t
1.3       markus     35: atomicio(f, fd, _s, n)
1.11    ! deraadt    36:        ssize_t (*f) (int, void *, size_t);
1.1       deraadt    37:        int fd;
1.3       markus     38:        void *_s;
1.1       deraadt    39:        size_t n;
                     40: {
1.3       markus     41:        char *s = _s;
1.2       d          42:        ssize_t res, pos = 0;
1.1       deraadt    43:
                     44:        while (n > pos) {
                     45:                res = (f) (fd, s + pos, n - pos);
                     46:                switch (res) {
                     47:                case -1:
                     48:                        if (errno == EINTR || errno == EAGAIN)
                     49:                                continue;
                     50:                case 0:
1.7       markus     51:                        return (res);
1.1       deraadt    52:                default:
                     53:                        pos += res;
                     54:                }
                     55:        }
                     56:        return (pos);
                     57: }