sysdecode_sigcode(3)

sysdecode_sigcode3

Lookup name of signal code

Usage

#include <sysdecode.h>

const char *

sysdecode_sigcode(int signal, int si_code);

Library

library “libsysdecode”

Overview

The sysdecode_sigcode() function returns a text description of the si_code field of the siginfo_t object associated with an instance of signal sig. The text description contains the name of the C macro whose value matches si_code. General purpose signal codes such as SI_USER are handled as well as signal-specific codes for SIGBUS, SIGCHLD, SIGFPE, SIGILL, SIGSEGV and SIGTRAP. If si_code does not represent a known signal code, sysdecode_sigcode() returns NULL.

Return values

The sysdecode_sigcode() function returns a pointer to a signal code description or NULL if si_code is not a known signal code.

Releases

24 releases since FreeBSD 11.1-RELEASE; the text changed 11 times.

  1. 11.1
  2. 11.2
  3. 11.3
  4. 11.4
  5. 12.0
  6. 12.1
  7. 12.2
  8. 12.3
  9. 12.4
  10. 13.0–13.1
  11. 13.2
  12. 13.3–16.0

From base 16.0-CURRENT-20261027-61c70dc16a79 in FreeBSD 16.0-CURRENT (2026-10-27). Parsed by carta from the page's mdoc source.