diff options
Diffstat (limited to 'contrib/bind/lib/irs/README')
| -rw-r--r-- | contrib/bind/lib/irs/README | 56 |
1 files changed, 0 insertions, 56 deletions
diff --git a/contrib/bind/lib/irs/README b/contrib/bind/lib/irs/README deleted file mode 100644 index cb81a9a5b501..000000000000 --- a/contrib/bind/lib/irs/README +++ /dev/null @@ -1,56 +0,0 @@ -/* - * Copyright (c) 1996,1999 by Internet Software Consortium. - * - * Permission to use, copy, modify, and distribute this software for any - * purpose with or without fee is hereby granted, provided that the above - * copyright notice and this permission notice appear in all copies. - * - * THE SOFTWARE IS PROVIDED "AS IS" AND INTERNET SOFTWARE CONSORTIUM DISCLAIMS - * ALL WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES - * OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL INTERNET SOFTWARE - * CONSORTIUM BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL - * DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR - * PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS - * ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS - * SOFTWARE. - */ - -This is the Information Retrieval Service (IRS). -Designed by Paul Vixie (ISC) and Ted T'so (MIT), 1995. -Written by Paul Vixie, Ted T'so and Sam Stoller, 1996. -$Id: README,v 1.5 1999/01/08 19:23:52 vixie Exp $ - -Introduction: - - The /etc/irs.conf file defines access methods (like DNS or NIS or -LOCAL) for each map (like PASSWD or GROUP or HOSTS). One of the access -methods is "generic" in that it uses the rules from /etc/irs.conf to decide -which of potentially several different access methods to use for any given -map. Stubs have been written for all of the system getXbyY() functions so -that old programs can get this new "multiple access method" capability without -any source code changes. - -Thread Safety: - - It is possible for a thread safe program to be altered to call the -underlying interface (rather than the standard getXbyY() stubs) and get some -reentrance capabilities. Note that the underlying libraries (which we call) -are not all thread-safe, for example, the YP and DNS resolvers. A lot more -work will need to be done before we have full thread safety. But we believe -that the native API for this system does not impose any reentrancy problems. -We don't use global or static variables anywhere except in the getXbyY() stubs. - -Apologies: - - We did cheap object orientation without using C++. This stuff is -standard C, and it suffers from some of the defects shared by all object -systems implemented in C. Even so, this is the smallest design we could -think of that would be extensible to more access methods, more map types, -and more map operations (like BYNAME or BYGID or whatever) in the future. - - There's a fair amount of duplicated code between the different -access methods for a given map. For example, the code that parses the -passwd entries is almost identical between the DNS and NIS map objects. To -clean this up, the almost-identical functions need to be split into similar -and dissimilar parts, and some parts of the "struct pvt"'s need to be made -shared via substructures. |