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git-svn-id: file:///Users/olsen/Code/migration-svn-zu-git/logical-line-staging/clib2/trunk@14685 87f5fb63-7c3d-0410-a384-fd976d0f7a62
123 lines
3.2 KiB
C
123 lines
3.2 KiB
C
/*
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* $Id: stdio_tmpnam.c,v 1.1.1.1 2004-07-26 16:31:42 obarthel Exp $
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*
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* :ts=4
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*
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* Portable ISO 'C' (1994) runtime library for the Amiga computer
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* Copyright (c) 2002-2004 by Olaf Barthel <olsen@sourcery.han.de>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* - Neither the name of Olaf Barthel nor the names of contributors
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* may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _STDIO_HEADERS_H
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#include "stdio_headers.h"
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#endif /* _STDIO_HEADERS_H */
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/****************************************************************************/
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char *
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tmpnam(char *buf)
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{
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static char local_buffer[L_tmpnam];
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static unsigned short counter;
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struct Process * this_process;
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APTR old_window_pointer;
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unsigned short c;
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char * result = NULL; /* ZZZ compiler claims that this assignment is unnecessary. */
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BPTR lock;
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int i;
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ENTER();
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if(__check_abort_enabled)
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__check_abort();
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/* If no user-supplied buffer is available, use the local one. */
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if(buf == NULL)
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buf = local_buffer;
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this_process = (struct Process *)FindTask(NULL);
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old_window_pointer = this_process->pr_WindowPtr;
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while(TRUE)
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{
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if(__check_abort_enabled)
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__check_abort();
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c = (counter++);
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/* Build another temporary file name, which begins with the
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* letters 'tmp' followed by an octal number.
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*/
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strcpy(buf,"tmp");
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for(i = 0 ; i < 10 ; i++)
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{
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buf[3 + 10 - (i+1)] = '0' + (c % 8);
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c = (c / 8);
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}
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buf[3 + 10] = '\0';
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D(("checking if '%s' exists",buf));
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/* Turn off DOS error requesters. */
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this_process->pr_WindowPtr = (APTR)-1;
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/* Does this object exist already? */
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PROFILE_OFF();
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lock = Lock(buf,SHARED_LOCK);
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PROFILE_ON();
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/* Restore DOS requesters. */
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this_process->pr_WindowPtr = old_window_pointer;
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if(lock == ZERO)
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{
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/* If the object does not exist yet then we
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* are finished.
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*/
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if(IoErr() == ERROR_OBJECT_NOT_FOUND)
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result = buf;
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else
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__translate_io_error_to_errno(IoErr(),&errno);
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break;
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}
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/* OK, so it exists already. Start over... */
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PROFILE_OFF();
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UnLock(lock);
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PROFILE_ON();
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}
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SHOWSTRING(result);
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RETURN(result);
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return(result);
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}
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