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28.Dd October 17, 2016
29.Dt sysdecode_sigcode 3
30.Os
31.Sh NAME
32.Nm sysdecode_sigcode
33.Nd lookup name of signal code
34.Sh LIBRARY
35.Lb libsysdecode
36.Sh SYNOPSIS
37.In sys/types.h
38.In stdbool.h
39.In sysdecode.h
40.Ft const char *
41.Fn sysdecode_sigcode "int signal" "int si_code"
42.Sh DESCRIPTION
43The
44.Fn sysdecode_sigcode
45function returns a text description of the
46.Fa si_code
47field of the
48.Vt siginfo_t
49object associated with an instance of signal
50.Fa sig .
51The text description contains the name of the C macro whose value matches
52.Fa si_code .
53General purpose signal codes such as
54.Dv SI_USER
55are handled as well as signal-specific codes for
56.Dv SIGBUS ,
57.Dv SIGCHLD ,
58.Dv SIGFPE ,
59.Dv SIGILL ,
60.Dv SIGSEGV
61and
62.Dv SIGTRAP .
63If
64.Fa si_code
65does not represent a known signal code,
66.Fn sysdecode_sigcode
67returns
68.Dv NULL .
69.Sh RETURN VALUES
70The
71.Fn sysdecode_sigcode
72function returns a pointer to a signal code description or
73.Dv NULL
74if
75.Fa si_code
76is not a known signal code.
77.Sh SEE ALSO
78.Xr sysdecode_sigbus_code 3 ,
79.Xr sysdecode_sigchld_code 3 ,
80.Xr sysdecode_sigfpe_code 3 ,
81.Xr sysdecode_sigill_code 3 ,
82.Xr sysdecode_sigsegv_code 3 ,
83.Xr sysdecode_sigtrap_code 3
84