Commit Graph

20 Commits

Author SHA1 Message Date
Peter Wemm
9e06e6da51 Some adjustments for the resolver use of poll(). For some reason I thought
an unimplemented syscall returned ENOSYS, rather than EINVAL.  I have run
statically linked code with this wrapper and it does appear to work fine
on 2.2-stable which doesn't have poll().  ktrace shows the poll syscall fail
once and the fallback to select() working.
1997-09-16 06:03:54 +00:00
Peter Wemm
535db1806c Call poll(2) from within the resolver but adapt to older kernels without it
if necessary.  This removes the need to malloc large fd_set's for selecting
on high fd's (larger than FD_SETSIZE at libc compile time).

The syscall adaptive stuff only happens on the very first call.  SIGSYS
is masked, and if the call to poll fails with ENOSYS, then we use select
for the life of the program.  If poll does not fail with ENOSYS, then we
always use poll and skip the once-off signal masking gunk.

This may be overkill, but it saved my neck a few times while working on
multiple different sets of kernel sources, some with poll, some without.
1997-09-14 09:44:34 +00:00
Peter Wemm
1e7aa4e938 replace the OpenBSD fd_set sizing code with something more efficient.
Only call malloc() if the fd is too big for the compiled in fd_set size,
and don't use calloc either.  This should reduce the impact of conflicts
with private malloc implementations etc.  When using the fd_set on the
stack, only zero what is needed rather than all 1024 bits like FD_ZERO did.
1997-06-28 04:19:52 +00:00
Peter Wemm
d2346017f0 Dynamically size fd_set in select rather than fail if too many files
are open.
Obtained from: OpenBSD; by deraadt and dm
1997-06-27 13:00:51 +00:00
Peter Wemm
6c5aff806e Merge in bind-4.9.6 resolver changes. Note that they resolve the
overflow problem differently.
1997-06-27 08:22:03 +00:00
Peter Wemm
beb9f61579 Fix problem with FD_SET* overflow reporting.. Perror() didn't have enough
args, and errno hasn't actually been set so it probably doesn't make sense
to report it via strerror().

Pointed out by: bde
1997-03-12 11:10:54 +00:00
Guido van Rooij
1ab96f9344 Check for overflow of FD_SET 1997-03-10 19:32:46 +00:00
Peter Wemm
7e546392b5 Revert $FreeBSD$ to $Id$ 1997-02-22 15:12:41 +00:00
Jordan K. Hubbard
1130b656e5 Make the long-awaited change from $Id$ to $FreeBSD$
This will make a number of things easier in the future, as well as (finally!)
avoiding the Id-smashing problem which has plagued developers for so long.

Boy, I'm glad we're not using sup anymore.  This update would have been
insane otherwise.
1997-01-14 07:20:47 +00:00
Peter Wemm
ca785773f6 Here goes.. Bring the 4.9.5-P1 resolver into -current. This has the
DNSSEC stuff, among other things.  There are also some renamed functions,
I've left out the res_stubs.c from this commit in case cvs bombs out..
1996-12-30 13:18:48 +00:00
Peter Wemm
f991bb5181 Sigh, back out the last bright idea I had here about compiling the res_*
routines from contrib/bind directly.  There were too many problems,
including having to add -DUSE_OPTIONS_H to the entire libc source in
order for the contrib code to pick up it's options, and so on.

Instead, I've merged the changes, libc is now self contained again.
1996-08-30 21:13:42 +00:00
Peter Wemm
5ce1c533c7 Merge in bind-4.9.4-P1 resolver... 1996-08-29 20:08:19 +00:00
Jordan K. Hubbard
51295a4d3e General -Wall warning cleanup, part I.
Submitted-By: Kent Vander Velden <graphix@iastate.edu>
1996-07-12 18:57:58 +00:00
Peter Wemm
ab83cd2d54 Merge the 4.9.3-rel code into the res_* parts. The gethostXXXbyYYY
parts are not quite so simple..
1996-01-07 09:15:02 +00:00
Bruce Evans
e6507d611f Fix bogus include paths, some of which stopped libresolv from compiling. 1995-08-21 09:15:40 +00:00
Peter Wemm
e5ad4f8712 Update the resolver part of libc to bind-4.9.3-beta24 level (from beta9p1)
Note that this was done by selective patching from diffs, to not conflict
with the 4.4bsd base code..  This was *not* a trivial task..  I have been
testing this code (apart from cosmetic changes) in my libc for a while now.

Obtained from: Paul Vixie <paul@vix.com>
1995-08-20 20:03:06 +00:00
Rodney W. Grimes
6c06b4e2aa Remove trailing whitespace. 1995-05-30 05:51:47 +00:00
Paul Traina
8bdba3f880 remove need for -DDEBUG from resolver code (conflict with db/hash) 1994-09-25 17:45:41 +00:00
Paul Traina
1363f04ce1 get* rework and new bind code 1994-09-25 02:12:49 +00:00
Rodney W. Grimes
58f0484fa2 BSD 4.4 Lite Lib Sources 1994-05-27 05:00:24 +00:00