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| author | lawrance <lawrance@FreeBSD.org> | 2006-11-04 09:42:22 +0000 |
|---|---|---|
| committer | lawrance <lawrance@FreeBSD.org> | 2006-11-04 09:42:22 +0000 |
| commit | 20a2ef67d2c307e970657ffbb38b485f27d7a331 (patch) | |
| tree | 4c7eef5d972524a326285db5d5bc7de060c35bfe /lib/libc | |
| parent | b5fdd84df7c553347ca8e78f16a5c3189629b91c (diff) | |
| download | FreeBSD-src-20a2ef67d2c307e970657ffbb38b485f27d7a331.zip FreeBSD-src-20a2ef67d2c307e970657ffbb38b485f27d7a331.tar.gz | |
Document return values for res_query and res_search.
h_errno is not an extern int, just a macro providing an integer lvalue.
PR: doc/50573
Submitted by: Ronald F.Guilmette <rfg@monkeys.com>
Reviewed by: trhodes
MFC after: 3 days
Diffstat (limited to 'lib/libc')
| -rw-r--r-- | lib/libc/net/gethostbyname.3 | 4 | ||||
| -rw-r--r-- | lib/libc/net/resolver.3 | 16 |
2 files changed, 17 insertions, 3 deletions
diff --git a/lib/libc/net/gethostbyname.3 b/lib/libc/net/gethostbyname.3 index afd01b0..ef7d55a 100644 --- a/lib/libc/net/gethostbyname.3 +++ b/lib/libc/net/gethostbyname.3 @@ -49,7 +49,7 @@ .Lb libc .Sh SYNOPSIS .In netdb.h -.Vt extern int h_errno ; +.Vt int h_errno ; .Ft struct hostent * .Fn gethostbyname "const char *name" .Ft struct hostent * @@ -261,7 +261,7 @@ and is indicated by return of a .Dv NULL pointer. -The external integer +The integer .Va h_errno may then be checked to see whether this is a temporary failure or an invalid or unknown host. diff --git a/lib/libc/net/resolver.3 b/lib/libc/net/resolver.3 index 28392fb..f21f11a 100644 --- a/lib/libc/net/resolver.3 +++ b/lib/libc/net/resolver.3 @@ -32,7 +32,7 @@ .\" @(#)resolver.3 8.1 (Berkeley) 6/4/93 .\" $FreeBSD$ .\" -.Dd June 4, 1993 +.Dd November 4, 2006 .Dt RESOLVER 3 .Os .Sh NAME @@ -410,6 +410,20 @@ The .Fn res_init function will return 0 on success, or \-1 in a threaded program if per-thread storage could not be allocated. +.Pp +The +.Fn res_mkquery , +.Fn res_search , +and +.Fn res_query +functions return the size of the response on success, or \-1 if an +error occurs. +The integer +.Vt h_errno +may be checked to determine the reason for error. +See +.Xr gethostbyname 3 +for more information. .Sh FILES .Bl -tag -width /etc/resolv.conf .It Pa /etc/resolv.conf |
