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freebsd-skq/include
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vangyzen 60458e70da resolver: automatically reload /etc/resolv.conf 
On each resolver query, use stat(2) to see if the modification time
of /etc/resolv.conf has changed.  If so, reload the file and reinitialize
the resolver library.  However, only call stat(2) if at least two seconds
have passed since the last call to stat(2), since calling it on every
query could kill performance.

This new behavior is enabled by default.  Add a "reload-period" option
to disable it or change the period of the test.

Document this behavior and option in resolv.conf(5).

Polish the man page just enough to appease igor.

https://lists.freebsd.org/pipermail/freebsd-arch/2015-October/017342.html

Reviewed by:	kp, wblock
Discussed with:	jilles, imp, alfred
MFC after:	1 month
Relnotes:	yes
Sponsored by:	Dell Inc.
Differential Revision:	https://reviews.freebsd.org/D3867
2015-10-14 14:26:44 +00:00
..
arpa Add META_MODE support. 2015-06-13 19:20:56 +00:00
gssapi Add META_MODE support. 2015-06-13 19:20:56 +00:00
protocols Add META_MODE support. 2015-06-13 19:20:56 +00:00
rpc Add META_MODE support. 2015-06-13 19:20:56 +00:00
rpcsvc Add META_MODE support. 2015-06-13 19:20:56 +00:00
xlocale Add META_MODE support. 2015-06-13 19:20:56 +00:00
_ctype.h Remove the Berkeley clause 3's. 2010-02-16 19:39:50 +00:00
a.out.h Remove the Berkeley clause 3's. 2010-02-16 19:39:50 +00:00
ar.h Remove the Berkeley clause 3's. 2010-02-16 19:39:50 +00:00
assert.h Don't define static_assert for C++. 2011-12-29 14:41:17 +00:00
bitstring.h
complex.h I'm happy to finally commit stephen@'s implementations of cacos, 2013-05-30 04:49:26 +00:00
cpio.h
ctype.h Correctly expose xlocale functions if people include the headers in the wrong 2012-03-28 12:11:54 +00:00
db.h Remove the Berkeley clause 3's. 2010-02-16 19:39:50 +00:00
dirent.h Fix some edge cases with rewinddir(): 2014-07-11 16:16:26 +00:00
dlfcn.h Implement fdlopen(3), an rtld interface to load shared object by file 2012-01-07 10:33:01 +00:00
elf-hints.h
elf.h
err.h Remove the Berkeley clause 3's. 2010-02-16 19:39:50 +00:00
fmtmsg.h Fix a small typo. Fireware -> firmware. 2012-06-05 19:42:57 +00:00
fnmatch.h Remove the Berkeley clause 3's. 2010-02-16 19:39:50 +00:00
fstab.h Remove the Berkeley clause 3's. 2010-02-16 19:39:50 +00:00
fts.h Allow certain headers to be included more easily. 2013-05-21 21:20:10 +00:00
ftw.h
getopt.h
glob.h - Add restrict keyword to glob(3) 2011-12-20 22:56:13 +00:00
grp.h include: Remove checks for __BSD_VISIBLE where redundant with __XSI_VISIBLE 2014-05-11 13:48:21 +00:00
gssapi.h
hesiod.h
iconv.h Remove the const qualifier from iconv(3) to comply with POSIX: 2015-04-15 09:09:20 +00:00
ieeefp.h People porting FreeBSD to new architectures ought not have to 2011-10-21 06:41:46 +00:00
ifaddrs.h Allow certain headers to be included more easily. 2013-05-21 21:20:10 +00:00
inttypes.h Rename __wchar_t so it no longer conflicts with __wchar_t from clang 3.4 2014-04-01 14:46:11 +00:00
iso646.h Avoid accidental conflicts with C++ operator keywords. 2011-09-27 16:33:17 +00:00
kenv.h
langinfo.h langinfo.h: Hide YESSTR and NOSTR in strict POSIX mode. 2014-04-19 12:38:01 +00:00
libgen.h
limits.h POSIX.1-2008 moved some constants from the XSI option to the Base. 2011-03-04 19:28:27 +00:00
link.h
locale.h Reapply 227753 (xlocale cleanup), plus some fixes so that it passes build 2012-03-04 15:31:13 +00:00
Makefile Mute this cookie as well 2015-10-03 17:28:46 +00:00
Makefile.depend new depends 2015-06-16 23:37:19 +00:00
malloc_np.h Use bool rather than _Bool for C++ compatibility. 2015-08-19 18:32:12 +00:00
malloc.h
memory.h Remove the Berkeley clause 3's. 2010-02-16 19:39:50 +00:00
mk-osreldate.sh Misc fixes from projects/bmake 2015-06-11 21:13:05 +00:00
monetary.h Correctly expose xlocale functions if people include the headers in the wrong 2012-03-28 12:11:54 +00:00
mpool.h Remove the Berkeley clause 3's. 2010-02-16 19:39:50 +00:00
mqueue.h POSIX requires sigevent to be visible after mqueue.h is included. 2012-09-10 05:12:45 +00:00
ndbm.h Remove the Berkeley clause 3's. 2010-02-16 19:39:50 +00:00
netconfig.h
netdb.h Replace __const by const in all non-contributed source code. 2011-12-13 13:32:56 +00:00
nl_types.h
nlist.h Remove the Berkeley clause 3's. 2010-02-16 19:39:50 +00:00
nss.h
nsswitch.h Add capability to use a db version of services. It is enabled by 2010-04-04 08:31:03 +00:00
paths.h Assume that the -f argument is /dev/gpioc0 if it is not passed. 2013-09-17 11:48:47 +00:00
printf.h The register_printf_render_std() function expects regular string. 2012-07-04 17:35:07 +00:00
proc_service.h
pthread_np.h Introduce a non-portable function pthread_getthreadid_np(3) to retrieve 2011-02-07 21:26:46 +00:00
pthread.h Make use of gcc attributes in some standard include headers. 2015-04-06 01:39:16 +00:00
pwd.h Replace our version of the pwcache(3) API with NetBSD's implementation. 2012-10-19 12:44:22 +00:00
ranlib.h Remove the Berkeley clause 3's. 2010-02-16 19:39:50 +00:00
readpassphrase.h Sync with OpenBSD, primarily better signal and terminal handling. 2010-11-13 10:38:06 +00:00
regex.h Replace __const by const in all non-contributed source code. 2011-12-13 13:32:56 +00:00
res_update.h Update our stub resolver to final version of libbind. 2014-08-12 12:36:06 +00:00
resolv.h resolver: automatically reload /etc/resolv.conf 2015-10-14 14:26:44 +00:00
runetype.h After r232498, programs built with -ansi or -std=c89 including <ctype.h> 2012-03-06 20:15:23 +00:00
search.h Add re-entrant versions of the hash functions based on the GNU api. 2014-07-21 15:22:48 +00:00
semaphore.h Ensure #include <semaphore.h> is sufficient for using SEM_VALUE_MAX. 2015-01-31 16:39:26 +00:00
setjmp.h include: Remove checks for __BSD_VISIBLE where redundant with __XSI_VISIBLE 2014-05-11 13:48:21 +00:00
signal.h Make use of gcc attributes in some standard include headers. 2015-04-06 01:39:16 +00:00
spawn.h
stab.h Remove the Berkeley clause 3's. 2010-02-16 19:39:50 +00:00
stdalign.h Add <stdalign.h> and <stdnoreturn.h>. 2011-12-25 20:51:40 +00:00
stdbool.h Remove unneeded guard. 2011-12-25 20:15:41 +00:00
stddef.h Add guards to ptrdiff_t definition in include/stddef.h 2014-08-21 15:10:10 +00:00
stdio.h Add fdclose(3) function. 2015-07-04 16:42:14 +00:00
stdlib.h Make use of GCC alloc_align attribute 2015-05-15 20:43:37 +00:00
stdnoreturn.h Simply disallow <stdnoreturn.h> to be used in combination with C++. 2012-01-03 23:05:23 +00:00
string.h include: Remove checks for __BSD_VISIBLE where redundant with __XSI_VISIBLE 2014-05-11 13:48:21 +00:00
stringlist.h Remove clause 3 and 4 from the license 2015-05-21 08:38:25 +00:00
strings.h Add explicit_bzero(3) and its kernel counterpart. 2014-10-07 04:54:11 +00:00
sysexits.h Remove the Berkeley clause 3's. 2010-02-16 19:39:50 +00:00
tar.h Remove the Berkeley clause 3's. 2010-02-16 19:39:50 +00:00
termios.h include: Remove checks for __BSD_VISIBLE where redundant with __XSI_VISIBLE 2014-05-11 13:48:21 +00:00
tgmath.h Roll back r271012 even more aggressively. 2014-09-05 05:36:32 +00:00
time.h Add CLOCK_PROCESS_CPUTIME_ID to <time.h>, to synchronize the CLOCK_* 2013-01-14 18:01:19 +00:00
timeconv.h Remove the Berkeley clause 3's. 2010-02-16 19:39:50 +00:00
timers.h
ttyent.h Add a new flag to /etc/ttys: onifconsole. This is equivalent to "on" if the 2014-01-20 18:15:06 +00:00
uchar.h Fix <uchar.h> in for C++11. 2013-05-25 16:58:12 +00:00
ulimit.h
unistd.h Use the __sentinel attribute. 2015-07-08 16:21:10 +00:00
unwind.h Also the stop function should accept 64-bit exception class. 2010-09-30 03:16:35 +00:00
utime.h Remove the Berkeley clause 3's. 2010-02-16 19:39:50 +00:00
utmpx.h
uuid.h
varargs.h
wchar.h include: Remove checks for __BSD_VISIBLE where redundant with __XSI_VISIBLE 2014-05-11 13:48:21 +00:00
wctype.h Reapply 227753 (xlocale cleanup), plus some fixes so that it passes build 2012-03-04 15:31:13 +00:00
wordexp.h
xlocale.h Reapply 227753 (xlocale cleanup), plus some fixes so that it passes build 2012-03-04 15:31:13 +00:00