[PATCH 17/38] docs: networking: convert dns_resolver.txt to ReST
From: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Date: 2020-04-27 22:04:37
Also in:
ceph-devel, linux-doc, lkml
Subsystem:
ceph common code (libceph), documentation, networking [general], the rest · Maintainers:
Ilya Dryomov, Alex Markuze, Viacheslav Dubeyko, Jonathan Corbet, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
- add SPDX header;
- adjust titles and chapters, adding proper markups;
- comment out text-only TOC from html/pdf output;
- mark code blocks and literals as such;
- adjust identation, whitespaces and blank lines;
- add to networking/index.rst.
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
---
.../{dns_resolver.txt => dns_resolver.rst} | 52 +++++++++----------
Documentation/networking/index.rst | 1 +
net/ceph/Kconfig | 2 +-
net/dns_resolver/Kconfig | 2 +-
net/dns_resolver/dns_key.c | 2 +-
net/dns_resolver/dns_query.c | 2 +-
6 files changed, 30 insertions(+), 31 deletions(-)
rename Documentation/networking/{dns_resolver.txt => dns_resolver.rst} (89%)
diff --git a/Documentation/networking/dns_resolver.txt b/Documentation/networking/dns_resolver.rst
similarity index 89%
rename from Documentation/networking/dns_resolver.txt
rename to Documentation/networking/dns_resolver.rst
index eaa8f9a6fd5d..add4d59a99a5 100644
--- a/Documentation/networking/dns_resolver.txt
+++ b/Documentation/networking/dns_resolver.rst@@ -1,8 +1,10 @@ - =================== - DNS Resolver Module - =================== +.. SPDX-License-Identifier: GPL-2.0 -Contents: +=================== +DNS Resolver Module +=================== + +.. Contents: - Overview. - Compilation.
@@ -12,8 +14,7 @@ Contents: - Debugging. -======== -OVERVIEW +Overview ======== The DNS resolver module provides a way for kernel services to make DNS queries
@@ -33,50 +34,50 @@ It does not yet support the following AFS features: This code is extracted from the CIFS filesystem. -=========== -COMPILATION +Compilation =========== -The module should be enabled by turning on the kernel configuration options: +The module should be enabled by turning on the kernel configuration options:: CONFIG_DNS_RESOLVER - tristate "DNS Resolver support" -========== -SETTING UP +Setting up ========== To set up this facility, the /etc/request-key.conf file must be altered so that /sbin/request-key can appropriately direct the upcalls. For example, to handle basic dname to IPv4/IPv6 address resolution, the following line should be -added: +added:: + #OP TYPE DESC CO-INFO PROGRAM ARG1 ARG2 ARG3 ... #====== ============ ======= ======= ========================== create dns_resolver * * /usr/sbin/cifs.upcall %k To direct a query for query type 'foo', a line of the following should be added -before the more general line given above as the first match is the one taken. +before the more general line given above as the first match is the one taken:: create dns_resolver foo:* * /usr/sbin/dns.foo %k -===== -USAGE +Usage ===== To make use of this facility, one of the following functions that are -implemented in the module can be called after doing: +implemented in the module can be called after doing:: #include <linux/dns_resolver.h> - (1) int dns_query(const char *type, const char *name, size_t namelen, - const char *options, char **_result, time_t *_expiry); + :: + + int dns_query(const char *type, const char *name, size_t namelen, + const char *options, char **_result, time_t *_expiry); This is the basic access function. It looks for a cached DNS query and if it doesn't find it, it upcalls to userspace to make a new DNS query, which may then be cached. The key description is constructed as a string of the - form: + form:: [<type>:]<name>
@@ -107,16 +108,14 @@ This can be cleared by any process that has the CAP_SYS_ADMIN capability by the use of KEYCTL_KEYRING_CLEAR on the keyring ID. -=============================== -READING DNS KEYS FROM USERSPACE +Reading DNS Keys from Userspace =============================== Keys of dns_resolver type can be read from userspace using keyctl_read() or "keyctl read/print/pipe". -========= -MECHANISM +Mechanism ========= The dnsresolver module registers a key type called "dns_resolver". Keys of
@@ -147,11 +146,10 @@ See <file:Documentation/security/keys/request-key.rst> for further information about request-key function. -========= -DEBUGGING +Debugging ========= Debugging messages can be turned on dynamically by writing a 1 into the -following file: +following file:: - /sys/module/dnsresolver/parameters/debug + /sys/module/dnsresolver/parameters/debug
diff --git a/Documentation/networking/index.rst b/Documentation/networking/index.rst
index c893127004b9..55746038a7e9 100644
--- a/Documentation/networking/index.rst
+++ b/Documentation/networking/index.rst@@ -52,6 +52,7 @@ Contents: dctcp decnet defza + dns_resolver .. only:: subproject and html
diff --git a/net/ceph/Kconfig b/net/ceph/Kconfig
index 2e8e6f904920..d7bec7adc267 100644
--- a/net/ceph/Kconfig
+++ b/net/ceph/Kconfig@@ -39,6 +39,6 @@ config CEPH_LIB_USE_DNS_RESOLVER be resolved using the CONFIG_DNS_RESOLVER facility. For information on how to use CONFIG_DNS_RESOLVER consult - Documentation/networking/dns_resolver.txt + Documentation/networking/dns_resolver.rst If unsure, say N.
diff --git a/net/dns_resolver/Kconfig b/net/dns_resolver/Kconfig
index 0a1c2238b4bd..255df9b6e9e8 100644
--- a/net/dns_resolver/Kconfig
+++ b/net/dns_resolver/Kconfig@@ -19,7 +19,7 @@ config DNS_RESOLVER SMB2 later. DNS Resolver is supported by the userspace upcall helper "/sbin/dns.resolver" via /etc/request-key.conf. - See <file:Documentation/networking/dns_resolver.txt> for further + See <file:Documentation/networking/dns_resolver.rst> for further information. To compile this as a module, choose M here: the module will be called
diff --git a/net/dns_resolver/dns_key.c b/net/dns_resolver/dns_key.c
index ad53eb31d40f..3aced951d5ab 100644
--- a/net/dns_resolver/dns_key.c
+++ b/net/dns_resolver/dns_key.c@@ -1,6 +1,6 @@ /* Key type used to cache DNS lookups made by the kernel * - * See Documentation/networking/dns_resolver.txt + * See Documentation/networking/dns_resolver.rst * * Copyright (c) 2007 Igor Mammedov * Author(s): Igor Mammedov (niallain@gmail.com)
diff --git a/net/dns_resolver/dns_query.c b/net/dns_resolver/dns_query.c
index cab4e0df924f..82b084cc1cc6 100644
--- a/net/dns_resolver/dns_query.c
+++ b/net/dns_resolver/dns_query.c@@ -1,7 +1,7 @@ /* Upcall routine, designed to work as a key type and working through * /sbin/request-key to contact userspace when handling DNS queries. * - * See Documentation/networking/dns_resolver.txt + * See Documentation/networking/dns_resolver.rst * * Copyright (c) 2007 Igor Mammedov * Author(s): Igor Mammedov (niallain@gmail.com)
--
2.25.4