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Special Forums News, Links, Events and Announcements Software Releases - RSS News htable 1.1 (Default branch)
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Old 11-14-2008
htable 1.1 (Default branch)
Image htable is a lightweight implementation of hash tables in C, greatly inspired by the implementations of spray and red-black trees found in *BSD kernels. To use it, you only need to copy the header file "htable.h" into your project. License: BSD License (revised) Changes:
Some minor corrections were applied to the manual, as well as to the macro used to insert elements in hash table: it now returns NULL if the element was already inserted before. A test was also implemented to check this new behavior. Image

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LEARN ABOUT BSD

htable

HTABLE(8)						      System Manager's Manual							 HTABLE(8)

NAME

       htable - convert NIC standard format host tables

SYNOPSIS

       /etc/htable [ -c connected-nets ] [ -l local-nets ] file

DESCRIPTION

       Htable is used to convert host files in the format specified in Internet RFC 810 to the format used by the network library routines.  Three
       files are created as a result of running htable: hosts, networks, and gateways.	The hosts file may be used by the  gethostbyname(3N)  rou-
       tines in mapping host names to addresses if the nameserver, named(8), is not used.  The networks file is used by the getnetent(3N) routines
       in mapping network names to numbers.  The gateways file may be used by the routing daemon in identifying ``passive'' Internet gateways; see
       routed(8C) for an explanation.

       If  any	of the files localhosts, localnetworks, or localgateways are present in the current directory, the file's contents is prepended to
       the output file.  Of these, only the gateways file is interpreted.  This allows sites to maintain local aliases and entries which  are  not
       normally  present  in  the  master database.  Only one gateway to each network will be placed in the gateways file; a gateway listed in the
       localgateways file will override any in the input file.

       If the gateways file is to be used, a list of networks to which the host is directly connected is specified with the  -c  flag.	 The  net-
       works,  separated  by  commas,  may be given by name or in Internet-standard dot notation, e.g.	-c arpanet,128.32,local-ether-net.  Htable
       only includes gateways which are directly connected to one of the networks specified, or which can be reached from  another  gateway  on  a
       connected net.

       If the -l option is given with a list of networks (in the same format as for -c), these networks will be treated as ``local,'' and informa-
       tion about hosts on local networks is taken only from the localhosts file.  Entries for local hosts from the main database will be omitted.
       This allows the localhosts file to completely override any entries in the input file.

       Htable is best used in conjunction with the gettable(8C) program which retrieves the NIC database from a host.

SEE ALSO

       intro(3N), gettable(8C), named(8)

BUGS

       If the name-domain system provided network name mapping well as host name mapping, htable would no longer be needed.

4.2 Berkeley Distribution					   May 22, 1986 							 HTABLE(8)