1.\" 2.\" Copyright (c) 2016 John Baldwin <jhb@FreeBSD.org> 3.\" 4.\" Redistribution and use in source and binary forms, with or without 5.\" modification, are permitted provided that the following conditions 6.\" are met: 7.\" 1. Redistributions of source code must retain the above copyright 8.\" notice, this list of conditions and the following disclaimer. 9.\" 2. Redistributions in binary form must reproduce the above copyright 10.\" notice, this list of conditions and the following disclaimer in the 11.\" documentation and/or other materials provided with the distribution. 12.\" 13.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 14.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 15.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 16.\" ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 17.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 18.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 19.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 20.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 21.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 22.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 23.\" SUCH DAMAGE. 24.\" 25.\" $FreeBSD$ 26.\" 27.Dd October 17, 2016 28.Dt sysdecode_sigcode 3 29.Os 30.Sh NAME 31.Nm sysdecode_sigcode 32.Nd lookup name of signal code 33.Sh LIBRARY 34.Lb libsysdecode 35.Sh SYNOPSIS 36.In sys/types.h 37.In stdbool.h 38.In sysdecode.h 39.Ft const char * 40.Fn sysdecode_sigcode "int signal" "int si_code" 41.Sh DESCRIPTION 42The 43.Fn sysdecode_sigcode 44function returns a text description of the 45.Fa si_code 46field of the 47.Vt siginfo_t 48object associated with an instance of signal 49.Fa sig . 50The text description contains the name of the C macro whose value matches 51.Fa si_code . 52General purpose signal codes such as 53.Dv SI_USER 54are handled as well as signal-specific codes for 55.Dv SIGBUS , 56.Dv SIGCHLD , 57.Dv SIGFPE , 58.Dv SIGILL , 59.Dv SIGSEGV 60and 61.Dv SIGTRAP . 62If 63.Fa si_code 64does not represent a known signal code, 65.Fn sysdecode_sigcode 66returns 67.Dv NULL . 68.Sh RETURN VALUES 69The 70.Fn sysdecode_sigcode 71function returns a pointer to a signal code description or 72.Dv NULL 73if 74.Fa si_code 75is not a known signal code. 76.Sh SEE ALSO 77.Xr sysdecode_sigbus_code 3 , 78.Xr sysdecode_sigchld_code 3 , 79.Xr sysdecode_sigfpe_code 3 , 80.Xr sysdecode_sigill_code 3 , 81.Xr sysdecode_sigsegv_code 3 , 82.Xr sysdecode_sigtrap_code 3 83