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| author |   millert <millert@openbsd.org> | 2017-05-05 15:48:50 +0000 |
|---|---|---|
| committer | millert <millert@openbsd.org> | 2017-05-05 15:48:50 +0000 |
| commit | ec39cc2d1811c0ec96c19a73d1405e01b7ade000 (patch) | |
| tree | 01967c097e19f2dd77f30274fc02addadc6609ea | |
| parent | Add glue to attach SDHC compliant controllers using the FDT. This makes (diff) | |
| download | wireguard-openbsd-ec39cc2d1811c0ec96c19a73d1405e01b7ade000.tar.xz wireguard-openbsd-ec39cc2d1811c0ec96c19a73d1405e01b7ade000.zip | |
Document what happens when sending a signal to the calling process.
OK jmc@
| -rw-r--r-- | lib/libc/sys/kill.2 | 23 |
1 files changed, 20 insertions, 3 deletions
diff --git a/lib/libc/sys/kill.2 b/lib/libc/sys/kill.2 index 152012c6163..c4947e9b9dd 100644 --- a/lib/libc/sys/kill.2 +++ b/lib/libc/sys/kill.2 @@ -1,4 +1,4 @@ -.\" $OpenBSD: kill.2,v 1.23 2015/11/02 17:32:54 deraadt Exp $ +.\" $OpenBSD: kill.2,v 1.24 2017/05/05 15:48:50 millert Exp $ .\" $NetBSD: kill.2,v 1.7 1995/02/27 12:33:53 cgd Exp $ .\" .\" Copyright (c) 1980, 1991, 1993 @@ -30,7 +30,7 @@ .\" .\" @(#)kill.2 8.3 (Berkeley) 4/19/94 .\" -.Dd $Mdocdate: November 2 2015 $ +.Dd $Mdocdate: May 5 2017 $ .Dt KILL 2 .Os .Sh NAME @@ -89,6 +89,23 @@ with the same uid as the user excluding the process sending the signal. No error is returned if any process could be signaled. .El .Pp +If the value of +.Fa pid +causes +.Fa sig +to be sent to the calling process, either +.Fa sig +or at least one pending unblocked signal will be delivered before +.Fn kill +returns unless +.Fa sig +is blocked in the calling thread, +.Fa sig +is unblocked in another thread, or another thread is waiting for +.Fa sig +in +.Fn sigwait . +.Pp Setuid and setgid processes are dealt with slightly differently. For the non-root user, to prevent attacks against such processes, some signal deliveries are not permitted and return the error @@ -138,7 +155,7 @@ of the group could be signaled. .Sh STANDARDS The .Fn kill -function is expected to conform to +function conforms to .St -p1003.1-2008 . .Sh HISTORY The |