mirror of
https://github.com/KolibriOS/kolibrios.git
synced 2024-12-16 20:02:35 +03:00
100 lines
2.4 KiB
C
100 lines
2.4 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);
|
|
}
|
|
while (*++mode)
|
|
{
|
|
switch (*mode)
|
|
{
|
|
case '+':
|
|
ret = (ret & ~(__SRD | __SWR)) | __SRW;
|
|
m = (m & ~O_ACCMODE) | O_RDWR;
|
|
break;
|
|
case 'b':
|
|
#ifdef O_BINARY
|
|
m |= O_BINARY;
|
|
#endif
|
|
break;
|
|
#ifdef __CYGWIN__
|
|
case 't':
|
|
m |= O_TEXT;
|
|
break;
|
|
#endif
|
|
#if defined (O_CLOEXEC) && defined (_GLIBC_EXTENSION)
|
|
case 'e':
|
|
m |= O_CLOEXEC;
|
|
break;
|
|
#endif
|
|
case 'x':
|
|
m |= O_EXCL;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
#if defined (O_TEXT) && !defined (__CYGWIN__)
|
|
if (!(m | O_BINARY))
|
|
m |= O_TEXT;
|
|
#endif
|
|
*optr = m | o;
|
|
return ret;
|
|
}
|