A/UX® Programmer's Reference Sections

sigaction(3P) sigaction(3P)
If sigaction fails, no new signal handler is installed.
A/UX POSIX defines the following signals:
SIGHUP 1 hangup
SIGINT 2 interrupt
SIGQUIT 3* qmt
S I GILL 4* illegal instruction
SI GABRT 6* aborted
S I GFPE 8* floating -point exception
SIGKILL 9 kill (cannot be caught, blocked, or ignored)
S I GSEGV 11 * segmentation violation
SIGPIPE 13 write on a pipe with no one to read it
S I GALRM 14 alarm clock
SIGTERM 15 software termination signal
SIGUSRl 16 user defined signal 1
SIGUSR2 17 user defined signal 2
SIGCLD 18. child status has changed
SIGTSTP 20t stop signal generated from keyboard
SIGTTIN 21 t backgrmU1d read attempted from control terminal
SIGTTOU 22t backgrmU1d write attempted to control terminal
SIGSTOP 23t stop (cannot be caught, blocked, or ignored)
SIGXCPU 24 cpu time limit exceeded
S I GXF S Z 25 file size limit exceeded
SIGCONT 2ge continue after stop (cannot be blocked)
The following signals are also defined:
S I GTRAP 5* trace ttap
SIGIOT 6* abort
SIGEMT 7* EMT instruction
SIGBUS 10* bus error
SIGSYS 12* bad argument to system call
SIGPWR 19 power-fail restart
SIGVTALRM 26 virtual time alarm (see setitimer(2»
SIGPROF 27 profiling timer alann (see setitimer(2»)
SIGWINCH 28e window size change
S I GURG 30e urgent condition present on socket
SIGIO 31. I/O possible on a descriptor (see fcntl(2)
The starred signals (*) in the list above cause a core image if not
caught or ignored.
The default action for a signal may be reinstated by setting
sv handler to SIG DFL; this default is termination (with a
core image for starred SIgnalS) except for signals marked with. or
February, 1990
RevisionC
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