diff options
| author | Ted Unangst <tedu@cvs.openbsd.org> | 2004-03-16 08:46:47 +0000 |
|---|---|---|
| committer | Ted Unangst <tedu@cvs.openbsd.org> | 2004-03-16 08:46:47 +0000 |
| commit | d9907f84621a8bd60d727ef329d89fd3c2bbb4cf (patch) | |
| tree | d7efa15a4e7a4d1ad38045dab585132015855491 | |
| parent | 96ca5082ee797f1f27e46c88740344206c30ec9f (diff) | |
errno should only be gotten from <errno.h>. ok help jmc@
| -rw-r--r-- | lib/libc/sys/intro.2 | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/lib/libc/sys/intro.2 b/lib/libc/sys/intro.2 index 4eb8087aa3d..2b863949a04 100644 --- a/lib/libc/sys/intro.2 +++ b/lib/libc/sys/intro.2 @@ -1,4 +1,4 @@ -.\" $OpenBSD: intro.2,v 1.29 2003/12/04 14:32:09 otto Exp $ +.\" $OpenBSD: intro.2,v 1.30 2004/03/16 08:46:46 tedu Exp $ .\" $NetBSD: intro.2,v 1.6 1995/02/27 12:33:41 cgd Exp $ .\" .\" Copyright (c) 1980, 1983, 1986, 1991, 1993 @@ -49,10 +49,15 @@ their error returns, and other common definitions and concepts. Nearly all of the system calls provide an error number in the external variable .Va errno , -which is defined as: +which is currently defined as: .Pp .Dl extern int errno; .Pp +Portable applications must not depend on this definition, and should only +use +.Va errno +as defined in +.Aq Pa errno.h . When a system call detects an error, it returns an integer value indicating failure (usually \-1) and sets the variable .Va errno |