# Resolv

Parses /etc/resolv.conf

Author: Raphael Pinson rap.nosp@m.hink@gmai.nosp@m.l.com

Summary

Resolv | Parses /etc/resolv.conf
Reference | This lens tries to keep as close as possible to `man resolv.conf` where possible.
Licence | This file is licensed under the LGPL v2+, like the rest of Augeas.
Lens Usage |
Configuration files | This lens applies to /etc/resolv.conf.
USEFUL PRIMITIVES |
comment |
comment_eol |
empty |
MAIN OPTIONS |
netmask | A network mask for IP addresses
ipaddr | An IP address or range with an optional mask
nameserver | A nameserver entry
domain |
search |
sortlist |
lookup |
family |
SPECIAL OPTIONS |
ip6_dotint | ip6-dotint option, which supports negation
options | Options values
entry |
lns |
filter |

### Reference

This lens tries to keep as close as possible to `man resolv.conf` where possible.

### Licence

This file is licensed under the LGPL v2+, like the rest of Augeas.

### Lens Usage

### Configuration files

This lens applies to /etc/resolv.conf. See filter.

### USEFUL PRIMITIVES

### comment

> let comment = Util.comment_generic /[ \t]*[;#][ \t]*/ "# "

### comment_eol

> let comment_eol = Util.comment_generic /[ \t]*[;#][ \t]*/ " # "

### empty

> let empty = Util.empty_generic_dos /[ \t]*[#;]?[ \t]*/

### MAIN OPTIONS

### netmask

> let netmask = [ label "netmask" . Util.del_str "/" . store Rx.ip ]

A network mask for IP addresses

### ipaddr

> let ipaddr = [label "ipaddr" . store Rx.ip . netmask?]

An IP address or range with an optional mask

### nameserver

> let nameserver = Build.key_value_line_comment "nameserver" Sep.space (store Rx.ip) comment_eol

A nameserver entry

### domain

> let domain = Build.key_value_line_comment "domain" Sep.space (store Rx.word) comment_eol

### search

> let search = Build.key_value_line_comment "search" Sep.space (Build.opt_list [label "domain" . store Rx.word] Sep.space) comment_eol

### sortlist

> let sortlist = Build.key_value_line_comment "sortlist" Sep.space (Build.opt_list ipaddr Sep.space) comment_eol

### lookup

> let lookup = let lookup_entry = Build.flag("bind"|"file"|"yp") in Build.key_value_line_comment "lookup" Sep.space (Build.opt_list lookup_entry Sep.space) comment_eol

### family

> let family = let family_entry = Build.flag("inet4"|"inet6") in Build.key_value_line_comment "family" Sep.space (Build.opt_list family_entry Sep.space) comment_eol

### SPECIAL OPTIONS

### ip6_dotint

> let ip6_dotint = let negate = [ del "no-" "no-" . label "negate" ] in [ negate? . key "ip6-dotint" ]

ip6-dotint option, which supports negation

### options

> let options = let options_entry = Build.key_value ("ndots"|"timeout"|"attempts") (Util.del_str ":") (store Rx.integer) | Build.flag ("debug"|"rotate"|"no-check-names" |"inet6"|"ip6-bytestring"|"edns0" |"single-request-reopen") | ip6_dotint in Build.key_value_line_comment "options" Sep.space (Build.opt_list options_entry Sep.space) comment_eol

Options values

### entry

> let entry = nameserver | domain | search | sortlist | options | lookup | family

### lns

> let lns = ( empty | comment | entry )*

### filter

> let comment = Util.comment_generic /[ \t]*[;#][ \t]*/ "# "

> let comment_eol = Util.comment_generic /[ \t]*[;#][ \t]*/ " # "

> let empty = Util.empty_generic_dos /[ \t]*[#;]?[ \t]*/

> let netmask = [ label "netmask" . Util.del_str "/" . store Rx.ip ]

A network mask for IP addresses

> let ipaddr = [label "ipaddr" . store Rx.ip . netmask?]

An IP address or range with an optional mask

> let nameserver = Build.key_value_line_comment "nameserver" Sep.space (store Rx.ip) comment_eol

A nameserver entry

> let domain = Build.key_value_line_comment "domain" Sep.space (store Rx.word) comment_eol

> let search = Build.key_value_line_comment "search" Sep.space (Build.opt_list [label "domain" . store Rx.word] Sep.space) comment_eol

> let sortlist = Build.key_value_line_comment "sortlist" Sep.space (Build.opt_list ipaddr Sep.space) comment_eol

> let lookup = let lookup_entry = Build.flag("bind"|"file"|"yp") in Build.key_value_line_comment "lookup" Sep.space (Build.opt_list lookup_entry Sep.space) comment_eol

> let family = let family_entry = Build.flag("inet4"|"inet6") in Build.key_value_line_comment "family" Sep.space (Build.opt_list family_entry Sep.space) comment_eol

> let ip6_dotint = let negate = [ del "no-" "no-" . label "negate" ] in [ negate? . key "ip6-dotint" ]

ip6-dotint option, which supports negation

> let options = let options_entry = Build.key_value ("ndots"|"timeout"|"attempts") (Util.del_str ":") (store Rx.integer) | Build.flag ("debug"|"rotate"|"no-check-names" |"inet6"|"ip6-bytestring"|"edns0" |"single-request-reopen") | ip6_dotint in Build.key_value_line_comment "options" Sep.space (Build.opt_list options_entry Sep.space) comment_eol

Options values

> let entry = nameserver | domain | search | sortlist | options | lookup | family

> let lns = ( empty | comment | entry )*

Close