diff options
| -rw-r--r-- | lib/libc/net/getaddrinfo.3 | 69 | ||||
| -rw-r--r-- | lib/libc/net/getipnodebyname.3 | 41 | ||||
| -rw-r--r-- | lib/libc/net/getnameinfo.3 | 15 | ||||
| -rw-r--r-- | lib/libc/net/if_indextoname.3 | 2 | ||||
| -rw-r--r-- | lib/libc/net/inet6_option_space.3 | 2 | ||||
| -rw-r--r-- | lib/libc/net/inet6_rthdr_space.3 | 2 |
6 files changed, 110 insertions, 21 deletions
diff --git a/lib/libc/net/getaddrinfo.3 b/lib/libc/net/getaddrinfo.3 index 2e608cd..1a0b5f4 100644 --- a/lib/libc/net/getaddrinfo.3 +++ b/lib/libc/net/getaddrinfo.3 @@ -1,7 +1,7 @@ -.\" Copyright (c) 1983, 1987, 1991, 1993 .\" $FreeBSD$ -.\" $KAME: getaddrinfo.3,v 1.16 2000/07/05 08:18:42 itojun Exp $ +.\" $KAME: getaddrinfo.3,v 1.22 2000/08/09 21:16:17 itojun Exp $ .\" +.\" Copyright (c) 1983, 1987, 1991, 1993 .\" The Regents of the University of California. All rights reserved. .\" .\" Redistribution and use in source and binary forms, with or without @@ -36,7 +36,7 @@ .\" .Dd May 25, 1995 .Dt GETADDRINFO 3 -.Os KAME +.Os .\" .Sh NAME .Nm getaddrinfo , @@ -270,6 +270,67 @@ is returned. This flag prevents any type of name resolution service (e.g., the DNS) from being called. .Pp +The arguments to +.Fn getaddrinfo +must sufficiently be consistent and unambiguous. +Here are pitfall cases you may encounter: +.Bl -bullet +.It +.Fn getaddrinfo +will raise error if members in +.Fa hints +structure is not consistent. +For example, for internet address families, +.Fn getaddrinfo +will raise error if you specify +.Dv SOCK_STREAM +to +.Fa ai_socktype +while you specify +.Dv IPPROTO_UDP +to +.Fa ai_protocol . +.It +If you specify a +.Fa servname +which is defined only for certain +.Fa ai_socktype , +.Fn getaddrinfo +will raise error because the arguments are not consistent. +For example, +.Fn getaddrinfo +will raise error if you ask for +.Dq Li tftp +service on +.Dv SOCK_STREAM . +.It +For internet address families, if you specify +.Fa servname +while you set +.Fa ai_socktype +to +.Dv SOCK_RAW , +.Fn getaddrinfo +will raise error, because service names are not defined for the internet +.Dv SOCK_RAW +space. +.It +If you specify numeric +.Fa servname , +while leaving +.Fa ai_socktype +and +.Fa ai_protocol +unspecified, +.Fn getaddrinfo +will raise error. +This is because the numeric +.Fa servname +does not identify any socket type, and +.Fn getaddrinfo +is not allowed to glob the argument in such case. +.El +.Pp All of the information returned by .Fn getaddrinfo is dynamically allocated: @@ -539,4 +600,6 @@ and documented in .Pq RFC2553 . .\" .Sh BUGS +The current implementation is not thread-safe. +.Pp The text was shamelessly copied from RFC2553. diff --git a/lib/libc/net/getipnodebyname.3 b/lib/libc/net/getipnodebyname.3 index bb20406..618f5a3 100644 --- a/lib/libc/net/getipnodebyname.3 +++ b/lib/libc/net/getipnodebyname.3 @@ -1,3 +1,6 @@ +.\" $FreeBSD$ +.\" $KAME: getipnodebyname.3,v 1.6 2000/08/09 21:16:17 itojun Exp $ +.\" .\" Copyright (c) 1983, 1987, 1991, 1993 .\" The Regents of the University of California. All rights reserved. .\" @@ -30,12 +33,10 @@ .\" SUCH DAMAGE. .\" .\" From: @(#)gethostbyname.3 8.4 (Berkeley) 5/25/95 -.\" $Id: getipnodebyname.3,v 1.2 1999/09/13 16:04:51 itojun Exp $ -.\ $FreeBSD$ .\" .Dd May 25, 1995 .Dt GETIPNODEBYNAME 3 -.Os KAME +.Os .\" .Sh NAME .Nm getipnodebyname , @@ -94,7 +95,7 @@ For .Fn getipnodebyname , the .Ar name -argument can be either a node name or a numeric address +argument can be either a node name or a numeric address string .Po i.e., a dotted-decimal IPv4 address or an IPv6 hex address @@ -411,9 +412,9 @@ or .El .\" .Sh DIAGNOSTICS -.Nm getipnodebyname +.Fn getipnodebyname and -.Nm getipnodebyaddr +.Fn getipnodebyaddr returns .Dv NULL on errors. @@ -432,8 +433,15 @@ The meanings of each error code are described in .Xr hostname 7 , .Xr named 8 .Pp -R. Gilligan, S. Thomson, J. Bound, and W. Stevens, -``Basic Socket Interface Extensions for IPv6,'' RFC2553, March 1999. +.Rs +.%A R. Gilligan +.%A S. Thomson +.%A J. Bound +.%A W. Stevens +.%T Basic Socket Interface Extensions for IPv6 +.%R RFC2553 +.%D March 1999 +.Re .\" .Sh HISTORY The implementation first appeared in KAME advanced networking kit. @@ -442,8 +450,23 @@ The implementation first appeared in KAME advanced networking kit. .Fn getipnodebyname and .Fn getipnodebyaddr -are documented in ``Basic Socket Interface Extensions for IPv6'' +are documented in +.Dq Basic Socket Interface Extensions for IPv6 .Pq RFC2553 . .\" .Sh BUGS +.Fn getipnodebyname +and +.Fn getipnodebyaddr +do not handle scoped IPv6 address properly. +If you use these functions, +your program will not be able to handle scoped IPv6 addresses. +For IPv6 address manipulation, +.Fn getaddrinfo 3 +and +.Fn getnameinfo 3 +are recommended. +.Pp +The current implementation is not thread-safe. +.Pp The text was shamelessly copied from RFC2553. diff --git a/lib/libc/net/getnameinfo.3 b/lib/libc/net/getnameinfo.3 index 0b47857..113563f 100644 --- a/lib/libc/net/getnameinfo.3 +++ b/lib/libc/net/getnameinfo.3 @@ -1,5 +1,5 @@ .\" $FreeBSD$ -.\" $KAME: getnameinfo.3,v 1.16 2000/07/05 08:22:04 itojun Exp $ +.\" $KAME: getnameinfo.3,v 1.17 2000/08/09 21:16:17 itojun Exp $ .\" .\" Copyright (c) 1983, 1987, 1991, 1993 .\" The Regents of the University of California. All rights reserved. @@ -36,7 +36,7 @@ .\" .Dd May 25, 1995 .Dt GETNAMEINFO 3 -.Os KAME +.Os .\" .Sh NAME .Nm getnameinfo @@ -57,14 +57,15 @@ The .Fn getnameinfo function is defined for protocol-independent address-to-nodename translation. Its functionality is a reverse conversion of -.Xr getaddrinfo 3 -and is similar to that of +.Xr getaddrinfo 3 , +and implements similar functionality with .Xr gethostbyaddr 3 and -.Xr getservbyport 3 . +.Xr getservbyport 3 +in more sophisticated manner. .Pp This function looks up an IP address and port number provided by the -caller in the DNS and system-specific database and then returns text +caller in the DNS and system-specific database, and returns text strings for both in buffers provided by the caller. The function indicates successful completion by a zero return value; a non-zero return value indicates failure. @@ -303,6 +304,8 @@ and documented in .Pq RFC2553 . .\" .Sh BUGS +The current implementation is not thread-safe. +.Pp The text was shamelessly copied from RFC2553. .Pp The type of the 2nd argument should be diff --git a/lib/libc/net/if_indextoname.3 b/lib/libc/net/if_indextoname.3 index 612ae1b..a0d4beb 100644 --- a/lib/libc/net/if_indextoname.3 +++ b/lib/libc/net/if_indextoname.3 @@ -34,7 +34,7 @@ .\" .Dd May 21, 1998 .Dt IF_NAMETOINDEX 3 -.Os KAME +.Os .Sh NAME .Nm if_nametoindex , .Nm if_indextoname , diff --git a/lib/libc/net/inet6_option_space.3 b/lib/libc/net/inet6_option_space.3 index 6c0e365..63cbfa5 100644 --- a/lib/libc/net/inet6_option_space.3 +++ b/lib/libc/net/inet6_option_space.3 @@ -34,7 +34,7 @@ .\" .Dd December 10, 1999 .Dt INET6_OPTION_SPACE 3 -.Os KAME +.Os .\" .Sh NAME .Nm inet6_option_space , diff --git a/lib/libc/net/inet6_rthdr_space.3 b/lib/libc/net/inet6_rthdr_space.3 index 4c1e80a..26e5c35 100644 --- a/lib/libc/net/inet6_rthdr_space.3 +++ b/lib/libc/net/inet6_rthdr_space.3 @@ -34,7 +34,7 @@ .\" .Dd December 10, 1999 .Dt INET6_RTHDR_SPACE 3 -.Os KAME +.Os .\" .Sh NAME .Nm inet6_rthdr_space , |
