source: rtems/cpukit/libcsupport/src/hosterr.c @ 4cc631db

4.104.114.84.95
Last change on this file since 4cc631db was 4cc631db, checked in by Joel Sherrill <joel.sherrill@…>, on Aug 11, 1995 at 2:33:04 PM

Added functions to access the errno of the native system when using the
newlib C library.

Fixed bug where length did not take into account amount added
for alignment requirements.

  • Property mode set to 100644
File size: 951 bytes
Line 
1/*
2 *  Routines to access a host errno
3 *
4 *  COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994.
5 *  On-Line Applications Research Corporation (OAR).
6 *  All rights assigned to U.S. Government, 1994.
7 *
8 *  This material may be reproduced by or for the U.S. Government pursuant
9 *  to the copyright license under the clause at DFARS 252.227-7013.  This
10 *  notice must appear in all copies of this file and its derivatives.
11 *
12 */
13
14#include <rtems.h>
15#include <errno.h>
16
17int host_errno(void);
18
19/*
20 * copy host errno, if any to thread aware errno, if any
21 */
22
23void fix_syscall_errno(void)
24{
25    errno = host_errno();
26}
27
28/*
29 * Get the host system errno, if any
30 * When using newlib (or possibly other libc's) on top of UNIX
31 * the errno returned by system calls may be unavailable due
32 * to trickery of making errno thread aware.
33 * This provides a kludge of getting at it.
34 */
35
36#undef errno
37extern int errno;
38int host_errno(void)
39{
40    return errno;
41}
42
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