76 lines
1.6 KiB
C
76 lines
1.6 KiB
C
/*
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* $QNXLicenseC:
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* Copyright 2007, QNX Software Systems. All Rights Reserved.
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*
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* You must obtain a written license from and pay applicable license fees to QNX
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* Software Systems before you may reproduce, modify or distribute this software,
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* or any work that includes all or part of this software. Free development
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* licenses are available for evaluation and non-commercial purposes. For more
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* information visit http://licensing.qnx.com or email licensing@qnx.com.
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*
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* This file may contain contributions from others. Please review this entire
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* file for other proprietary rights or license notices, as well as the QNX
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* Development Suite License Guide at http://licensing.qnx.com/license-guide/
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* for other information.
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* $
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*/
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#include <stdio.h>
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#include <stdarg.h>
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#include <unistd.h>
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#include <fcntl.h>
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#include <limits.h>
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#include <share.h>
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#include <malloc.h>
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#include <errno.h>
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#include <string.h>
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int __parse_oflag(const char *mode) {
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int oflag;
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const char *p;
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switch(*mode++) {
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case 'a':
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oflag = O_CREAT | O_WRONLY | O_APPEND;
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break;
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case 'w':
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oflag = O_CREAT | O_WRONLY | O_TRUNC;
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break;
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case 'r':
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oflag = O_RDONLY;
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break;
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default:
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return -1;
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}
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p = mode;
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while(*mode) {
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if(!p || memchr(p, *mode, mode - p) != 0) {
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break;
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}
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switch(*mode++) {
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case '+':
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oflag = (oflag & ~O_ACCMODE) | O_RDWR;
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break;
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case 'x':
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oflag |= O_EXCL;
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break;
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case 'b':
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oflag |= O_BINARY;
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break;
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case 't':
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oflag |= O_TEXT;
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break;
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default:
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p = 0;
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break;
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}
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}
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return oflag;
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}
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__SRCVERSION("__parse_oflag.c $Rev: 153052 $");
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