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version 2.1

    1: /*************************************************************************
    2: * (C) 2010 AITNET ltd - Sofia/Bulgaria - <misho@aitbg.com>
    3: *  by Michael Pounov <misho@openbsd-bg.org>
    4: *
    5: * $Author: misho $
    6: * $Id: file.c,v 1.6 2014/02/04 16:58:17 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 - 2014
   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: #include "tool.h"
   48: #include "file.h"
   49: 
   50: 
   51: int
   52: sync_Open(const char *csFile, int mode, int perm)
   53: {
   54: 	int f;
   55: 
   56: 	if (!csFile || (*csFile == '-' && !csFile[1]))
   57: 		return mode;
   58: 
   59: 	f = open(csFile, !mode ? O_RDONLY : O_WRONLY | O_CREAT | O_TRUNC, 
   60: 			!perm ? 0644 : perm);
   61: 	if (f == -1)
   62: 		LOGERR;
   63: 
   64: 	return f;
   65: }
   66: 
   67: int
   68: sync_Temp(char * __restrict psName, int len)
   69: {
   70: 	char str[] = "/tmp/ansyncXXXXXX.dlt";
   71: 	int f;
   72: 
   73: 	f = mkstemps(str, 4);
   74: 	strlcpy(psName, str, len);
   75: 
   76: 	return f;
   77: }
   78: 
   79: void
   80: sync_Close(int f)
   81: {
   82: 	if (f > 2)
   83: 		close(f);
   84: }
   85: 
   86: int
   87: sync_EOF(int f)
   88: {
   89: 	off_t old;
   90: 	int ret = 0;
   91: 
   92: 	old = lseek(f, 0, SEEK_CUR);
   93: 	ret = lseek(f, 0, SEEK_END) - old;
   94: 	if (lseek(f, old, SEEK_SET) == -1) {
   95: 		LOGERR;
   96: 		return -1;
   97: 	}
   98: 
   99: 	return !ret;
  100: }