59 lines
1,015 B
C
59 lines
1,015 B
C
/*
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* (c) copyright 1987 by the Vrije Universiteit, Amsterdam, The Netherlands.
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* See the copyright notice in the ACK home directory, in the file "Copyright".
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*/
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/* $Id$ */
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#include <fcntl.h>
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#include <unistd.h>
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#include <errno.h>
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#include "system.h"
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#if !defined WIN32
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#define O_BINARY 0
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#endif
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extern File *_get_entry();
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int
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sys_open(path, flag, filep)
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char *path;
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int flag;
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File **filep;
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{
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register int fd;
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register File *fp;
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if ((fp = _get_entry()) == (File *)0)
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return 0;
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switch (flag) {
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case OP_READ:
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if ((fd = open(path, O_RDONLY|O_BINARY)) < 0)
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return 0;
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break;
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case OP_APPEND:
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if ((fd = open(path, O_WRONLY|O_BINARY)) < 0) {
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if (access(path, 0) == 0)
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return 0;
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}
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else {
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if (lseek(fd, 0L, 2) < 0L) {
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close(fd);
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return 0;
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}
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break;
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}
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/* Fall through */
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case OP_WRITE:
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if ((fd = open(path, O_CREAT|O_TRUNC|O_WRONLY|O_BINARY, 0666)) < 0)
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return 0;
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break;
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default:
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return 0;
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}
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fp->o_flags = flag;
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fp->o_fd = fd;
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*filep = fp;
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return 1;
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}
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