PSIGNAL(3) BSD Library Functions Manual PSIGNAL(3)NAME
psignal, sys_siglist, sys_signame — system signal messages
SYNOPSIS
#include <sys/signal.h>
void
psignal(unsigned sig, const char *s);
extern char *sys_siglist[];
extern char *sys_signame[];
DESCRIPTION
The psignal() function locates the descriptive message string for the
given signal number sig and writes it to the standard error.
If the argument s is non-NULL it 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 abbrevia‐
tions 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.
SEE ALSOsigaction(2), perror(3)HISTORY
The psignal() function appeared in 4.2BSD.
4.2 Berkeley Distribution February 27, 1995 4.2 Berkeley Distribution
