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Added SIGCONT under SA_NOCLDSTOP; added SA_NOCLDWAID; other minor changes

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Michael Kerrisk 2004-11-11 14:09:54 +00:00
parent 5d4a590c7d
commit 1cbdceb181
1 changed files with 35 additions and 10 deletions
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45
man2/sigaction.2
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@ -25,10 +25,15 @@
.\" Modified, aeb, 960424
.\" Modified Fri Jan 31 17:31:20 1997 by Eric S. Raymond <esr@thyrsus.com>
.\" Modified Thu Nov 26 02:12:45 1998 by aeb - add SIGCHLD stuff.
.\" Modified Sat May 8 17:40:19 1999 by Matthew Wilcox - add POSIX.1b signals
.\" Modified Sat Dec 29 01:44:52 2001 by Evan Jones <ejones@uwaterloo.ca> - SA_ONSTACK
.\" Modified Sat May 8 17:40:19 1999 by Matthew Wilcox
.\" add POSIX.1b signals
.\" Modified Sat Dec 29 01:44:52 2001 by Evan Jones <ejones@uwaterloo.ca>
.\" SA_ONSTACK
.\" Modified 2004-11-11 by Michael Kerrisk <mtk-manpages@gmx.net>
.\" Added mention of SIGCONT under SA_NOCLDSTOP
.\" Added SA_NOCLDWAIT
.\"
.TH SIGACTION 2 2001-12-29 "Linux 2.4" "Linux Programmer's Manual"
.TH SIGACTION 2 2004-11-11 "Linux 2.6.9" "Linux Programmer's Manual"
.SH NAME
sigaction, sigprocmask, sigpending, sigsuspend \- POSIX signal handling functions
.SH SYNOPSIS
@ -132,16 +137,33 @@ process. It is formed by the bitwise OR of zero or more of the following:
If
.I signum
is
.BR SIGCHLD ", "
do not receive notification when child processes stop (i.e., when child
processes receive one of
.BR SIGCHLD ,
do not receive notification when child processes stop (i.e., when they
receive one of
.BR SIGSTOP ", " SIGTSTP ", " SIGTTIN
or
.BR SIGTTOU ")."
.BR SIGTTOU )
or resume (i.e., they receive
.BR SIGCONT )
(see
.BR wait (2)).
.TP
.BR SA_ONESHOT " or " SA_RESETHAND
.B SA_NOCLDWAIT
(Linux 2.6 and later)
.\" To be precise: Linux 2.5.60 -- MTK
If
.I signum
is
.BR SIGCHLD ,
do not transform children into zombies when they terminate.
See also
.BR wait (2).
.TP
.B SA_RESETHAND
Restore the signal action to the default state once the signal handler
has been called.
.B SA_ONESHOT
is an obsolete, non-standard synonym for this flag.
.TP
.BR SA_ONSTACK
Call the signal handler on an alternate signal stack provided by
@ -152,9 +174,11 @@ If an alternate stack is not available, the default stack will be used.
Provide behaviour compatible with BSD signal semantics by making certain
system calls restartable across signals.
.TP
.BR SA_NOMASK " or " SA_NODEFER
.B SA_NODEFER
Do not prevent the signal from being received from within its own signal
handler.
.B SA_NOMASK
is an obsolete, non-standard synonym for this flag.
.TP
.B SA_SIGINFO
The signal handler takes 3 arguments, not one. In this case,
@ -455,11 +479,12 @@ This use is obsolete now.
.SH "SEE ALSO"
.BR kill (1),
.BR kill (2),
.BR killpg (2),
.BR pause (2),
.BR sigaltstack (2),
.BR signal (2),
.BR sigqueue (2),
.BR sigvec (2),
.BR killpg (3),
.BR raise (3),
.BR siginterrupt (3),
.BR sigsetops (3),