Checking the first nibble of the IPv6 address to be 0 and then
excluding two well known cases (v4-mapped, loopback) leaves us with
more cases where the first nibble could be 0, e.g., the RFC 6052,
2.1 Well-Known Prefix 64:ff9b::/96.
It is not practical to track them all and it is not clear what lead
to this special casing originally, so remove them.
While here also remove the IN6_IS_ADDR_LINKLOCAL() + NI_NUMERICHOST
case as link-local address resolution does exist.
We do leave the IN6_IS_ADDR_MULTICAST() case for now as I could
not find any references to any official reverse lookups for these.
Adding comments for more case (and some historic behaviour) in order
to make it easier to follow the logic.
PR: 279618
Fixes: 6cb9418289
Reviewed by: hrs
Differential Revision: https://reviews.freebsd.org/D45547
(cherry picked from commit c179937b986ec3959d89bfeb8eed0a6f58a28649)
The section INTERNET ADDRESSES describes the acceptance of dotted
values with varying number of parts in multiple bases. This applies
to inet_aton and inet_addr, but not to inet_pton. Clarify this
section by listing the functions to which this applies. Move the
description of what inet_pton accepts into this section from STANDARDS,
where it is easily missed. Rename the section to clarify that it
applies only to IPv4. (inet_pton also works with IPv6.)
Reviewed by: imp
Differential Revision: https://reviews.freebsd.org/D43537
(cherry picked from commit 9231c42127bf8e47588169ecc395f57cae0e15fb)
Add a required include to resolv.h for sockaddr_in. This should reduce
patching required when porting code written with Linux or NetBSD in mind.
PR: 182466
MFC after: 1 week
(cherry picked from commit 58cf91d3b72a01777bacf72d66a648a744ae3143)
These are implemented by net/ntoh.c via headers and compiler intrinsics
so declare them in net/Symbol.map.
Reviewed by: imp, kib, emaste
Differential Revision: https://reviews.freebsd.org/D42615
(cherry picked from commit ff3a9d8e2909692c73ce9f9279cac2f15848b3f4)
These were left over from $FreeBSD$ removal.
Reviewed by: emaste
Differential Revision: https://reviews.freebsd.org/D42612
(cherry picked from commit 1ca63a8219b88b752b064d19bd3428c61dbcf1f9)
These sys/cdefs.h are not needed. Purge them. They are mostly left-over
from the $FreeBSD$ removal. A few in libc are still required for macros
that cdefs.h defines. Keep those.
Sponsored by: Netflix
Differential Revision: https://reviews.freebsd.org/D42385
(cherry picked from commit 559a218c9b257775fb249b67945fe4a05b7a6b9f)
These do not use __FBSDID but instead use bare char arrays.
Reviewed by: imp, emaste
Differential Revision: https://reviews.freebsd.org/D41957
(cherry picked from commit eba230afba4932f02a1ca44efc797cf7499a5cb0)
Machine endianness is not very important in understanding the inet*
functions; the endianness of the VAX is especially so.
PR: 272728
Sponsored by: The FreeBSD Foundation
The SPDX folks have obsoleted the BSD-2-Clause-NetBSD identifier. Catch
up to that fact and revert to their recommended match of BSD-2-Clause.
Discussed with: pfg
MFC After: 3 days
Sponsored by: Netflix
The SPDX folks have obsoleted the BSD-2-Clause-FreeBSD identifier. Catch
up to that fact and revert to their recommended match of BSD-2-Clause.
Discussed with: pfg
MFC After: 3 days
Sponsored by: Netflix
- Be consistent with RFC references, so add a space after 'RFC'
- Add a LIBRARY section
- Use standard integer types in the SYNOPSIS section
Obtained from: DragonflyBSD
MFC after: 5 days
Differential Revision: https://reviews.freebsd.org/D27548
Rework getaddrinfo(3) to return different error values for unresolvable
names (same as before, EAI_NONAME) and those without a requested addr
(EAI_ADDRFAMILY) when using DNS. This is implemented via an added
error in the nsswitch layer, NS_ADDRFAMILY, which is used only by
getaddrinfo(). The error is passed through nsdispatch(3), but that
routine has no changes to handle this error. The error originates in
the getaddrinfo DNS layer called via nsdispatch(), and is processed
by the search layer that calls nsdispatch().
While here, add a little style to returns near those that were
modified.
Reviewed in https://reviews.freebsd.org/D37139 with related changes.
Reviewed by: bz
MFC after: 1 month
gai_strerror.c still has messages for EAI_ADDRFAMILY and EAI_NODATA,
but not the man page. Re-add to the man page, and update comments
in the source. Document the errors that are not in RFC 3493 or
POSIX.
Reviewed in https://reviews.freebsd.org/D37139 with related changes.
Reviewed by: bz, pauamma
MFC after: 1 month
The mentioned document "Name Server Operations Guide for BIND" is
outdated, so remove it from the SEE ALSO section of hosts.5
and resolver.{3,5}.
PR: 266360
Reported by: Graham Perrin <grahamperrin at FreeBSD dot org>
Reviewed by: karels
MFC after: 1 week
Differential Revision: https://reviews.freebsd.org/D36557
named(8) hasn't been in base for some time. Remove all references to it in
manual pages.
Approved by: manpages (Pau Amma)
Differential Revision: https://reviews.freebsd.org/D35586
Add documentation for gethostbyname_r, gethostbyname2_r and gethostbyaddr_r
Create proper MLINKs for the new functions.
PR: 249154
Reported by: asomers@
Approved by: manpages (0mp@), Pau Amma
Differential Revision: https://reviews.freebsd.org/D30469
RFC 2533 refers to 'A Syntax for Describing Media Feature Sets',
which is wrong since the correct reference should be
RFC 2553 'Basic Socket Interface Extensions for IPv6'.
Obtained from: OpenBSD
MFC after: 1 week
This reverts commit 266f97b5e9, reversing
changes made to a10253cffe.
A mismerge of a merge to catch up to main resulted in files being
committed which should not have been.
Section 9.5 of RFC 6458 (SCTP Socket API) requires that
sctp_getladdrs() returns 0 in case the socket is unbound. This
is the cause of reporting 0 addresses. So don't indicate an
error, just report this case as required.
PR: 260117
MFC after: 1 week
When calling getsockopt() with SCTP_GET_LOCAL_ADDR_SIZE, use a
pointer to a 32-bit variable, since this is what the kernel
expects.
While there, do some cleanups.
MFC after: 1 week
Mark functions inet_netof(), inet_lnaof(), and inet_makeaddr() as
deprecated, as they assume Class A/B/C. inet_makeaddr() mostly works
when networks are a multiple of 8 bits, but warn for anything other
than historical classes. Reduce other mentions of network classes.
MFC after: 1 month
Reviewed by: bcr, #manpages
Differential Revision: https://reviews.freebsd.org/D32711
