87 lines
2.2 KiB
C
87 lines
2.2 KiB
C
|
/*
|
||
|
|
* Copyright (c) 1990 Regents of the University of California.
|
||
|
|
* All rights reserved.
|
||
|
|
*
|
||
|
|
* Redistribution and use in source and binary forms are permitted
|
||
|
|
* provided that the above copyright notice and this paragraph are
|
||
|
|
* duplicated in all such forms and that any documentation,
|
||
|
|
* advertising materials, and other materials related to such
|
||
|
|
* distribution and use acknowledge that the software was developed
|
||
|
|
* by the University of California, Berkeley. The name of the
|
||
|
|
* University may not be used to endorse or promote products derived
|
||
|
|
* from this software without specific prior written permission.
|
||
|
|
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
|
||
|
|
* IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
|
||
|
|
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
|
||
|
|
*/
|
||
|
|
/* No user fns here. Pesch 15apr92 */
|
||
|
|
|
||
|
|
#include <_ansi.h>
|
||
|
|
#include <stdio.h>
|
||
|
|
#include <time.h>
|
||
|
|
#include <fcntl.h>
|
||
|
|
#include <errno.h>
|
||
|
|
#include <sys/types.h>
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Return the (stdio) flags for a given mode. Store the flags
|
||
|
|
* to be passed to an open() syscall through *optr.
|
||
|
|
* Return 0 on error.
|
||
|
|
*/
|
||
|
|
|
||
|
|
int
|
||
|
|
_DEFUN(__sflags, (ptr, mode, optr),
|
||
|
|
struct _reent *ptr _AND
|
||
|
|
register char *mode _AND
|
||
|
|
int *optr)
|
||
|
|
{
|
||
|
|
register int ret, m, o;
|
||
|
|
|
||
|
|
switch (mode[0])
|
||
|
|
{
|
||
|
|
case 'r': /* open for reading */
|
||
|
|
ret = __SRD;
|
||
|
|
m = O_RDONLY;
|
||
|
|
o = 0;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case 'w': /* open for writing */
|
||
|
|
ret = __SWR;
|
||
|
|
m = O_WRONLY;
|
||
|
|
o = O_CREAT | O_TRUNC;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case 'a': /* open for appending */
|
||
|
|
ret = __SWR | __SAPP;
|
||
|
|
m = O_WRONLY;
|
||
|
|
o = O_CREAT | O_APPEND;
|
||
|
|
break;
|
||
|
|
default: /* illegal mode */
|
||
|
|
ptr->_errno = EINVAL;
|
||
|
|
return (0);
|
||
|
|
}
|
||
|
|
if (mode[1] && (mode[1] == '+' || mode[2] == '+'))
|
||
|
|
{
|
||
|
|
ret = (ret & ~(__SRD | __SWR)) | __SRW;
|
||
|
|
m = O_RDWR;
|
||
|
|
}
|
||
|
|
if (mode[1] && (mode[1] == 'b' || mode[2] == 'b'))
|
||
|
|
{
|
||
|
|
#ifdef O_BINARY
|
||
|
|
m |= O_BINARY;
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
#ifdef __CYGWIN__
|
||
|
|
else if (mode[1] && (mode[1] == 't' || mode[2] == 't'))
|
||
|
|
#else
|
||
|
|
else
|
||
|
|
#endif
|
||
|
|
{
|
||
|
|
#ifdef O_TEXT
|
||
|
|
m |= O_TEXT;
|
||
|
|
#endif
|
||
|
|
}
|
||
|
|
*optr = m | o;
|
||
|
|
return ret;
|
||
|
|
}
|