diff options
| author | Eric Faurot <eric@cvs.openbsd.org> | 2012-08-18 16:48:18 +0000 |
|---|---|---|
| committer | Eric Faurot <eric@cvs.openbsd.org> | 2012-08-18 16:48:18 +0000 |
| commit | 2d6170fe443f939945152c4cd272112d4f396646 (patch) | |
| tree | d3c68ef23fe798f210956132cbcde53b53c04964 /lib/libc/asr/async_resolver.3 | |
| parent | e4218038d13ffd6856abc67fe6b5fd2b44d0a970 (diff) | |
ensure that async_run() and async_run_sync() always preserve errno.
Diffstat (limited to 'lib/libc/asr/async_resolver.3')
| -rw-r--r-- | lib/libc/asr/async_resolver.3 | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/lib/libc/asr/async_resolver.3 b/lib/libc/asr/async_resolver.3 index 2fa4204abe7..81ae9f92e23 100644 --- a/lib/libc/asr/async_resolver.3 +++ b/lib/libc/asr/async_resolver.3 @@ -1,4 +1,4 @@ -.\" $OpenBSD: async_resolver.3,v 1.2 2012/04/15 15:08:12 jmc Exp $ +.\" $OpenBSD: async_resolver.3,v 1.3 2012/08/18 16:48:17 eric Exp $ .\" .\" Copyright (c) 2012, Eric Faurot <eric@openbsd.org> .\" @@ -14,7 +14,7 @@ .\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF .\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. .\" -.Dd $Mdocdate: April 15 2012 $ +.Dd $Mdocdate: August 18 2012 $ .Dt ASYN_RESOLVER 3 .Os .Sh NAME @@ -212,6 +212,13 @@ are set accordingly and the resolving process can be resumed by calling .Fn async_run . .El .Pp +Note that although the query itself may fail (the error being properly reported +in the +.Fa ar +structure), the +.Fn async_run +function itself cannot fail and it always preserves errno. +.Pp The .Fn async_run_sync function is a wrapper around @@ -220,6 +227,7 @@ that handles the read/write conditions, thus falling back to a blocking interface. It only returns partial and complete results through ASYNC_YIELD and ASYNC_DONE respectively. +It also preserves errno. .Pp The .Fn async_abort |