Проект OpenNet: MAN sys_signame (3) Библиотечные вызовы (FreeBSD и Linux)

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sys_signame (3)

>> sys_signame (3) ( FreeBSD man: Библиотечные вызовы )

BSD mandoc

NAME



psignal

 
strsignal

 
sys_siglist

 
sys_signame

 - system signal messages

LIBRARY

Lb libc

SYNOPSIS

#include <signal.h>
void psignal (unsigned sig const char *s);
Vt extern const char * const sys_siglist[] ; Vt extern const char * const sys_signame[] ; #include <string.h>
char * strsignal (int sig);

DESCRIPTION

The psignal ();
and strsignal ();
functions locate the descriptive message string for a signal number.

The strsignal ();
function accepts a signal number argument Fa sig and returns a pointer to the corresponding message string.

The psignal ();
function accepts a signal number argument Fa sig and writes it to the standard error. If the argument Fa s is non- NULL and does not point to the null character, Fa s is written to the standard error file descriptor prior to the message string, immediately followed by a colon and a space. If the signal number is not recognized (sigaction(2) ) the string ``Unknown signal'' is produced.

The message strings can be accessed directly through the external array sys_siglist indexed by recognized signal numbers. The external array sys_signame is used similarly and contains short, lower-case abbreviations for signals which are useful for recognizing signal names in user input. The defined variable NSIG contains a count of the strings in sys_siglist and sys_signame

HISTORY

The psignal ();
function appeared in BSD 4.2

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Created 1996-2024 by Maxim Chirkov
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