strsignal, sigabbrev_np, sigdescr_np, sys_siglist - return string describing signal
#include <string.h>
char *strsignal(int sig);
const char *sigdescr_np(int sig);
const char *sigabbrev_np(int sig);
[[deprecated]] extern const char *const sys_siglist[];
Feature Test Macro Requirements for glibc (see feature_test_macros(7)):
The strsignal() function returns a string describing
the signal number passed in the argument sig
. The string can be
used only until the next call to strsignal(). The
string returned by strsignal() is localized according
to the LC_MESSAGES category in the current locale.
The sigdescr_np() function returns a string
describing the signal number passed in the argument sig
. Unlike
strsignal() this string is not influenced by the
current locale.
The sigabbrev_np() function returns the abbreviated
name of the signal, sig
. For example, given the value
SIGINT, it returns the string "INT".
The (deprecated) array sys_siglist
holds the signal
description strings indexed by signal number. The
strsignal() or the sigdescr_np()
function should be used instead of this array; see also VERSIONS.
The strsignal() function returns the appropriate description string, or an unknown signal message if the signal number is invalid. On some systems (but not on Linux), NULL may instead be returned for an invalid signal number.
The sigdescr_np() and sigabbrev_np() functions return the appropriate description string. The returned string is statically allocated and valid for the lifetime of the program. These functions return NULL for an invalid signal number.