From 4cc631db0f14afeb28c54aab262e5ddf252d3910 Mon Sep 17 00:00:00 2001 From: Joel Sherrill Date: Fri, 11 Aug 1995 14:33:04 +0000 Subject: 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. --- c/src/lib/libc/hosterr.c | 42 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 c/src/lib/libc/hosterr.c (limited to 'c/src/lib/libc/hosterr.c') diff --git a/c/src/lib/libc/hosterr.c b/c/src/lib/libc/hosterr.c new file mode 100644 index 0000000000..d842cc072a --- /dev/null +++ b/c/src/lib/libc/hosterr.c @@ -0,0 +1,42 @@ +/* + * Routines to access a host errno + * + * COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994. + * On-Line Applications Research Corporation (OAR). + * All rights assigned to U.S. Government, 1994. + * + * This material may be reproduced by or for the U.S. Government pursuant + * to the copyright license under the clause at DFARS 252.227-7013. This + * notice must appear in all copies of this file and its derivatives. + * + */ + +#include +#include + +int host_errno(void); + +/* + * copy host errno, if any to thread aware errno, if any + */ + +void fix_syscall_errno(void) +{ + errno = host_errno(); +} + +/* + * Get the host system errno, if any + * When using newlib (or possibly other libc's) on top of UNIX + * the errno returned by system calls may be unavailable due + * to trickery of making errno thread aware. + * This provides a kludge of getting at it. + */ + +#undef errno +extern int errno; +int host_errno(void) +{ + return errno; +} + -- cgit v1.2.3