1.\" Copyright (c) 2007 The DragonFly Project. All rights reserved. 2.\" 3.\" This code is derived from software contributed to The DragonFly Project 4.\" by Simon 'corecode' Schubert <corecode@fs.ei.tum.de> 5.\" 6.\" Redistribution and use in source and binary forms, with or without 7.\" modification, are permitted provided that the following conditions 8.\" are met: 9.\" 10.\" 1. Redistributions of source code must retain the above copyright 11.\" notice, this list of conditions and the following disclaimer. 12.\" 2. Redistributions in binary form must reproduce the above copyright 13.\" notice, this list of conditions and the following disclaimer in 14.\" the documentation and/or other materials provided with the 15.\" distribution. 16.\" 3. Neither the name of The DragonFly Project nor the names of its 17.\" contributors may be used to endorse or promote products derived 18.\" from this software without specific, prior written permission. 19.\" 20.\" THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 21.\" ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 22.\" LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 23.\" FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 24.\" COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 25.\" INCIDENTAL, SPECIAL, EXEMPLARY OR CONSEQUENTIAL DAMAGES (INCLUDING, 26.\" BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 27.\" LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 28.\" AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 29.\" OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 30.\" OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 31.\" SUCH DAMAGE. 32.\" 33.\" $DragonFly: src/lib/libc/sys/lwp_kill.2,v 1.2 2007/03/16 22:02:02 swildner Exp $ 34.\" 35.Dd March 12, 2007 36.Dt LWP_KILL 2 37.Os 38.Sh NAME 39.Nm lwp_kill 40.Nd send signal to a lwp 41.Sh LIBRARY 42.Lb libc 43.Sh SYNOPSIS 44.In sys/types.h 45.In sys/lwp.h 46.In signal.h 47.Ft int 48.Fn lwp_kill "pid_t pid" "lwpid_t tid" "int sig" 49.Sh DESCRIPTION 50The 51.Fn lwp_kill 52function sends the signal 53.Fa sig 54to the lwp specified by 55.Fa pid 56and 57.Fa tid . 58If 59.Fa pid 60is -1, the signal will be sent to the current process. 61Permission checking and signal behavior is exactly like in 62.Xr kill 2 . 63.Sh RETURN VALUES 64.Rv -std 65.Sh ERRORS 66.Fn Lwp_kill 67will fail and no signal will be sent if: 68.Bl -tag -width Er 69.It Bq Er EINVAL 70.Fa sig 71is not a valid signal number. 72.It Bq Er ESRCH 73no lwp corresponding to 74.Fa pid 75and 76.Fa tid 77can be found. 78.It Bq Er EPERM 79the sending process is not the super-user and its effective 80user id does not match the effective user-id of the receiving process. 81.El 82.Sh SEE ALSO 83.Xr kill 2 , 84.Xr lwp_create 2 , 85.Xr raise 3 86.Sh HISTORY 87The 88.Fn lwp_kill 89function first appeared in 90.Dx 1.9 . 91