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Annotation of libaitsync/src/file.c, revision 1.2

1.1       misho       1: /*************************************************************************
                      2: * (C) 2010 AITNET ltd - Sofia/Bulgaria - <misho@aitbg.com>
                      3: *  by Michael Pounov <misho@openbsd-bg.org>
                      4: *
                      5: * $Author: misho $
1.2     ! misho       6: * $Id: file.c,v 1.1.1.1.2.2 2011/05/09 14:35:56 misho Exp $
1.1       misho       7: *
1.2     ! misho       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: */
1.1       misho      46: #include "global.h"
1.2     ! misho      47: #include "tool.h"
1.1       misho      48: #include "file.h"
                     49: 
                     50: 
                     51: int syncOpen(const char *csFile, int mode)
                     52: {
                     53:        int f;
                     54: 
                     55:        if (!csFile || (*csFile == '-' && !csFile[1]))
                     56:                return mode;
                     57: 
                     58:        f = open(csFile, !mode ? O_RDONLY : O_WRONLY | O_CREAT | O_TRUNC, 0644);
                     59:        if (f == -1)
                     60:                SETERR;
                     61: 
                     62:        return f;
                     63: }
                     64: 
                     65: inline int syncTemp(char * __restrict psName, int len)
                     66: {
                     67:        char str[] = "/tmp/ansyncXXXXXX.dlt";
                     68:        int f;
                     69: 
                     70:        f = mkstemps(str, 4);
                     71:        strlcpy(psName, str, len);
                     72: 
                     73:        return f;
                     74: }
                     75: 
                     76: void syncClose(int f)
                     77: {
                     78:        if (f > 2)
                     79:                close(f);
                     80: }
                     81: 
                     82: int syncEOF(int f)
                     83: {
                     84:        off_t old;
                     85:        int ret = 0;
                     86: 
                     87:        old = lseek(f, 0, SEEK_CUR);
                     88:        ret = lseek(f, 0, SEEK_END) - old;
                     89:        if (lseek(f, old, SEEK_SET) == -1) {
                     90:                SETERR;
                     91:                return -1;
                     92:        }
                     93: 
                     94:        return !ret;
                     95: }