1.\" Copyright (c) 2015 The DragonFly Project. All rights reserved. 2.\" 3.\" This code is derived from software contributed to The DragonFly Project 4.\" by Sepherosa Ziehau <sepherosa@gmail.com>. 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.Dd November 19, 2015 34.Dt LWP_SETNAME 2 35.Os 36.Sh NAME 37.Nm lwp_setname 38.Nd Change lwp name 39.Sh LIBRARY 40.Lb libc 41.Sh SYNOPSIS 42.In unistd.h 43.Ft int 44.Fn lwp_setname "lwpid_t tid" "const char *name" 45.Sh DESCRIPTION 46The 47.Fn lwp_setname 48system call sets the lwp name. 49The lwp is in the process calling this system call, 50and the lwp is specified by 51.Fa tid . 52If the 53.Fa name 54is 55.Dv NULL , 56the lwp name will be set to the process name, 57which is the default name of the lwp. 58The 59.Fa name 60will be truncated, 61if it is longer than 62.Dv MAXCOMLEN . 63.Sh RETURN VALUES 64This system call returns \-1 on error and 650 upon successful completion. 66.Sh ERRORS 67The 68.Fn lwp_setname 69system call will fail if: 70.Bl -tag -width Er 71.It Bq Er EFAULT 72The 73.Fa name 74parameter is outside the process's allocated address space. 75.El 76.Sh SEE ALSO 77.Xr lwp_create 2 78.Xr setproctitle 3 79.Sh HISTORY 80The 81.Fn lwp_setname 82function first appeared in 83.Dx 4.3 . 84