1.\" $OpenBSD: btrace.8,v 1.9 2023/09/15 10:56:46 claudio Exp $ 2.\" 3.\" Copyright (c) 2019 Martin Pieuchot <mpi@openbsd.org> 4.\" 5.\" Permission to use, copy, modify, and distribute this software for any 6.\" purpose with or without fee is hereby granted, provided that the above 7.\" copyright notice and this permission notice appear in all copies. 8.\" 9.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10.\" WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11.\" MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12.\" ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13.\" WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14.\" ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15.\" OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16.\" 17.Dd $Mdocdate: September 15 2023 $ 18.Dt BTRACE 8 19.Os 20.Sh NAME 21.Nm btrace 22.Nd bug tracer 23.Sh SYNOPSIS 24.Nm btrace 25.Op Fl lnv 26.Op Fl e Ar program | Ar file 27.Op Fl p Ar file 28.Op Ar argument ... 29.Sh DESCRIPTION 30The 31.Nm 32utility provides an interface to inspect the internals of the system and 33programs. 34It interprets the 35.Xr bt 5 36program in 37.Ar file 38and communicates with the dynamic tracer device using the interface described in 39.Xr dt 4 . 40.Pp 41The options are as follows: 42.Bl -tag -width Ds 43.It Fl e Ar program 44Execute 45.Ar program . 46.It Fl l 47List all available probes. 48.It Fl n 49No action. 50Parse the program and then exit. 51.It Fl p Ar file 52Load symbols from 53.Ar file 54to convert 55.Va ustack 56addresses into function names. 57.It Fl v 58Verbose mode. 59Causes 60.Nm 61to print debugging messages. 62Multiple 63.Fl v 64options increase the verbosity. 65The maximum is 2. 66.El 67.Sh FILES 68.Bl -tag -width "/usr/share/btrace/XXXX" -compact 69.It Pa /usr/share/btrace/* 70collection of useful 71.Nm 72programs 73.El 74.Sh EXIT STATUS 75.Ex -std 76.Sh SEE ALSO 77.Xr dt 4 , 78.Xr bt 5 79.Sh HISTORY 80The 81.Nm 82utility first appeared in 83.Ox 6.7 . 84.Sh AUTHORS 85.An Martin Pieuchot Aq Mt mpi@openbsd.org 86