AT&T UNIX™PC Unix System V Users Manual - tenox

SIGNAL (2) SIGNAL (2)
NAME
signal - specify what to do upon receipt of a signal
SYNOPSIS
#include
int (•signal (sig, func))( )
int sig;
int (•func)( );
DESCRIPTION
Signal allows the calling process to choose one of three ways in
which it is possible to handle the receipt of a specific signal . Sig
specifies the signal and June specifies the choice.
Sig can be assigned any one of the following except SIGKILL:
SIGHUP 01 hangup
SIGINT
SIGQUIT
SIGILL
SIGTRAP
SIGIOT
SIGEMT
SIGFPE
SIGKILL
SIGBUS
SIGSEGV
SIGSYS
SIGPIPE
SIGALRM
SIGTERM
SIGUSRI
SIGUSR2
SIGCLD
SIGPWR
SIGWIND
02 interrupt
03* quit
04* illegal instruction (not reset when
caught)
05* trace trap (not reset when caught)
06* lOT instruction
07* EMT instruction
08* floating point exception
09 kill (cannot be caught or ignored)
10* bus error
11 * segmentation violation
12* bad argument to system call
13 write on a pipe with no one to read
it
14 alarm clock
15 software termination signal
16 user defined signal 1
17 user defined signal 2
18 death of a child (see WARNING
below)
19 power fail (see WARNING below)
20 window status changes
SIGPHONE 21 telephone status changes
See below for the significance of the asterisk ( *) in the
above list.
Func is assigned one of three values: SIG_DFL, SIG_IGN, or a
function address. The actions prescribed by these values of are as
follows:
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