kqueue(2) file descriptors are not inherited across fork(2). A
process that that calls getaddrinfo(3) will end up cacheing the
kqueue(2) file descriptor in its res_state structure. If that
process fo

kqueue(2) file descriptors are not inherited across fork(2). A
process that that calls getaddrinfo(3) will end up cacheing the
kqueue(2) file descriptor in its res_state structure. If that
process fork(2)s and calls getaddrinfo(3) again might end up closing
that cached file descriptor which can end up pointing to a different
file object than the kqueue(2) original one. To fix this, associate
the kqueue(2) file descriptor with the process id that created it,
and don't close(2) it if it is being closed from a different process.
An alternative fix would be to attach the resolver to a fork(2) hook
to cleanup the res_state, but handling it internally in the resolver
is less intrusive. This was discovered by Dima Veselov when using
the FreeRADIUS package.

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F_DUPFD* needs an argument (minfd) found by jmcneill

belated removal of the advertising clause.

Mark the dup of the resolv fd for close on exec.

provide a patchable __res_conf_name for testing purposes.

Fix typo ("then" instead of "than")

add a check-names option, now that the default is no-check-names

Use C89 Prototypes.
Remove use of __P

PR/45989: Martin Husemann: lint invocation does include -w only on i386

- turn lint -w for all the platforms after fixing the lint warnings.
- add _DIAGASSERTS() for casts that would assign values t

PR/45989: Martin Husemann: lint invocation does include -w only on i386

- turn lint -w for all the platforms after fixing the lint warnings.
- add _DIAGASSERTS() for casts that would assign values to types that
would not fit.
- change types, add casts
- change into ansii prototypes
- turn on _DIAGNOSTIC for libc (during current, to be eliminated for release
builds)

approved by core@

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close on exec fixes:
- open + fcntl -> open O_CLOEXEC
- configuration database file descriptors that can stay open are now opened
fopen(db, "re")

expose res_check.

Add a knote to keep track when resolv.conf gets changed and re-initialize.
While here fix a memory leak when calling res_vinit with an already inited
res_state.

Bring back binary compatibility with the previous version of the resolver.
There was no room to allocate 16 bytes for _rnd in the struct in the _LP64
case, so we dynamically allocate now. Also put th

Bring back binary compatibility with the previous version of the resolver.
There was no room to allocate 16 bytes for _rnd in the struct in the _LP64
case, so we dynamically allocate now. Also put the _rnd field last, so that
we are bitwise compatible too. Now of course we've run out of space, so
next time will need to perform more evil tricks to fit.

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we are not guaranteed that the ext pointer is going to be null at this point
so don't attempt to free.

fix lint issues and actual bugs lint found (missing break statements)

merge libbind and bump.

merge christos-time_t

- protect DEBUG again because we should be able to set it from the Makefile
- add a missing cast to pacify lint.

updates from bind-9-5-0

Resolve conflicts.

Only try free-ing a version of res if it is not supposed to be pre-inited
like before. Fixes issues with programs passing random uninitialized data
as res_state.

Don't check for ext being NULL to destroy the res_state. Instead check
the option bits like we did before.

Fix minor compilation issues.

merge in resolver portion of bind-9.4.0-rc2

Coverity CID 618: Comment out dead code.