'\" t
.\" Copyright (c) 1993 by Thomas Koenig (ig25@rz.uni-karlsruhe.de)
.\" and Copyright (c) 2002,2006 by Michael Kerrisk <mtk.manpages@gmail.com>
.\"
.\" Permission is granted to make and distribute verbatim copies of this
.\" manual provided the copyright notice and this permission notice are
.\" preserved on all copies.
.\"
.\" Permission is granted to copy and distribute modified versions of this
.\" manual under the conditions for verbatim copying, provided that the
.\" entire resulting derived work is distributed under the terms of a
.\" permission notice identical to this one.
.\"
.\" Since the Linux kernel and libraries are constantly changing, this
.\" manual page may be incorrect or out-of-date.  The author(s) assume no
.\" responsibility for errors or omissions, or for damages resulting from
.\" the use of the information contained herein.  The author(s) may not
.\" have taken the same level of care in the production of this manual,
.\" which is licensed free of charge, as they might when working
.\" professionally.
.\"
.\" Formatted or processed versions of this manual, if unaccompanied by
.\" the source, must acknowledge the copyright and authors of this work.
.\"
.\" Modified Sat Jul 24 17:34:08 1993 by Rik Faith (faith@cs.unc.edu)
.\" Modified Sun Jan  7 01:41:27 1996 by Andries Brouwer (aeb@cwi.nl)
.\" Modified Sun Apr 14 12:02:29 1996 by Andries Brouwer (aeb@cwi.nl)
.\" Modified Sat Nov 13 16:28:23 1999 by Andries Brouwer (aeb@cwi.nl)
.\" Modified 10 Apr 2002, by Michael Kerrisk <mtk.manpages@gmail.com>
.\" Modified  7 Jun 2002, by Michael Kerrisk <mtk.manpages@gmail.com>
.\"	Added information on real-time signals
.\" Modified 13 Jun 2002, by Michael Kerrisk <mtk.manpages@gmail.com>
.\"	Noted that SIGSTKFLT is in fact unused
.\" 2004-12-03, Modified mtk, added notes on RLIMIT_SIGPENDING
.\" 2006-04-24, mtk, Added text on changing signal dispositions,
.\"		signal mask, and pending signals.
.\"
.\" Japanese Version Copyright (c) 1997 Takafumi Naka
.\"         all rights reserved.
.\" Translated 1997-02-13, Takafumi Naka <takafumi@yk.rim.or.jp>
.\" Modified 1999-06-22, Tatsuo SEKINE <tsekine@isoternet.org>
.\" Modified 1999-07-18, Takafumi Naka <takafumi@yk.rim.or.jp>
.\" Modified 1999-12-06, NAKANO Takeo <nakano@apm.seikei.ac.jp>
.\"     to catch up with v1.28 of the upstream.
.\" Updated 2003-07-24, Kentaro Shirakata <argrath@ub32.org>
.\" Updated 2005-02-23, Akihiro MOTOKI <amotoki@dd.iij4u.or.jp>
.\" Updated 2006-07-28, Akihiro MOTOKI <amotoki@dd.iij4u.or.jp>, LDP v2.36
.\" Updated 2007-05-28, Akihiro MOTOKI <amotoki@dd.iij4u.or.jp>, LDP v2.50
.\" Updated 2007-09-08, Akihiro MOTOKI <amotoki@dd.iij4u.or.jp>, LDP v2.64
.\"
.\" WORD:	disposition	ˡ
.\"
.TH SIGNAL 7  2007-12-21 "Linux" "Linux Programmer's Manual"
.SH ̾
signal \- Ѳǽʥʥΰ
.SH 
Linux  POSIX ꥷʥ (reliable signal; ʸ "ɸॷʥ"ɽ)
 POSIX ꥢ륿ॷʥξбƤ롣
.SS ʥˡ
ʥϤ줾츽ߤΡֽˡ (disposition)פݻƤꡢ
νˡˤꥷʥ뤬줿ݤ˥ץ
ɤΤ褦ʿ񤤤򤹤뤫ޤ롣

Ҥɽ "ư" ΥȥϳƥʥΥǥեȤ
ˡ򼨤ƤꡢʲΤ褦ʰ̣ġ
.IP Term
ǥեȤưϥץλ
.IP Ign
ǥեȤưϤΥʥ̵롣
.IP Core
ǥեȤưϥץλȥ׽
.RB ( core (5)
)
.IP Stop
ǥեȤưϥץΰߡ
.IP Cont
ǥեȤưϡץξˤμ¹ԤκƳ
.PP
ץϡ
.BR sigaction (2)

.BR signal (2)
Ȥäơʥνˡѹ뤳ȤǤ
.RB ( signal (2)
ܿ㤤)ʥ˵ưȤ
ץǤΤϡΤ줫ĤǤ롣
ǥեȤư¹Ԥ롢ʥ̵뤹롢
.I "ʥ ϥɥ (signal handler)"
ǥʥª롣ʥϥɥȤϡʥ
ưŪ˵ưץδؿǤ롣

ʥνˡϥץñ̤°Ǥ롣
ޥåɤΥץꥱǤϡ륷ʥνˡ
ƤΥåɤƱǤ롣
.SS ʥޥȽԤʥ
ʥ
.I "֥å (block)"
뤳Ȥ롣֥åȡΥʥ
θ֥åޤʤʤ롣
ʥ뤬ƤޤǤδ֡Υʥ
.I "Ԥ (pending)"
ǤȸƤФ롣

ץγƥåɤϡ줾Ω
.I "ʥޥ (signal mask)"
ġʥޥϤΥåɤߥ֥åƤ
ʥ뽸򼨤ΤǤ롣
åɤϡ
.BR pthread_sigmask (3)
ȤäƼʬΥʥޥǤ롣
Ūʥ󥰥륹åɤΥץꥱǤϡ
.BR sigprocmask (2)
ȤäơʥޥǤ롣

륷ʥ (äƽԤȤʤ륷ʥ) ˤϡ
ץΰƤΥåɰƤ롣
㤨СץΰƤΥʥ
.BR kill (2)
Ȥä롣
Υޥ̿μ¹Ԥη̤Ȥ롢
.B SIGSEGV

.B SIGFPE
ʤɤΥʥϡåɰƤȤʤ롣
ޤ
.BR pthread_kill (3)
ȤäΥåɰƤ줿ʥ
åɰƤȤʤ롣
ץƤΥʥϡΥʥ֥åƤʤåɤΤ
줫ΰĤ뤳ȤǤ롣Υʥ֥åƤʤ
åɤʣ硢ʥ륹åɤϥͥ뤬
̵٤򤹤롣

åɤϡ
.BR sigpending (2)
Ȥäơ߽ԤΥʥ뽸뤳ȤǤ롣
νϡץƤνԤʥ
ƤӽФåɰƤΥʥξ鹽롣
.SS ɸॷʥ
Linux ϰʲ˼ɸॷʥбƤ롣
ʥֹΰϥƥ¸Ǥꡢ"" ˼̤Ǥ롣
(3Ĥͤ񤫤ƤΤϡ 1ܤ alpha  sparc ̾ͭ͡
椬 i386, ppc, sh Ǥ͡Ǹ夬 mips ǤͤǤ롣
\- ϤΥƥˤб륷ʥ뤬ʤȤ򼨤)

ǽˡPOSIX.1-1990 Ƥ륷ʥ򼨤
.TS
l c c l
____
lB c c l.
ʥ		ư	
SIGHUP	\01	Term	T{
ü(controlling terminal)Υϥ󥰥å׸С
ޤ椷Ƥץλ
T}
SIGINT	\02	Term	ܡɤγ (Interrupt)
SIGQUIT	\03	Core	ܡɤˤ (Quit)
SIGILL	\04	Core	̿
SIGABRT	\06	Core	\fBabort\fP(3)  (Abort) ʥ
SIGFPE	\08	Core	ư㳰
SIGKILL	\09	Term	Kill ʥ
SIGSEGV	11	Core	ʥ껲
SIGPIPE	13	Term	ѥ˲: ɤ߼̵ѥפؤν񤭽Ф
SIGALRM	14	Term	\fBalarm\fP(2) Υޡʥ
SIGTERM	15	Term	λ (termination) ʥ
SIGUSR1	30,10,16	Term	桼ʥ 1
SIGUSR2	31,12,17	Term	桼ʥ 2
SIGCHLD	20,17,18	Ign	ҥץΰö (stop) ޤϽλ
SIGCONT	19,18,25	Cont	ö (stop) κƳ
SIGSTOP	17,19,23	Stop	ץΰö (stop)
SIGTSTP	18,20,24	Stop	ü (tty) Ϥ줿ö (stop)
SIGTTIN	21,21,26	Stop	Хåɥץ tty 
SIGTTOU	22,22,27	Stop	Хåɥץ tty 
.TE

ʥ
.B SIGKILL

.B SIGSTOP
ϥå֥å̵Ǥʤ

ˡ POSIX.1-1990 ɸˤϤʤ SUSv2 
POSIX.1-2001 ˵ҤƤ륷ʥ򼨤
.TS
l c c l
____
lB c c l.
ʥ		ư	
SIGBUS	10,7,10	Core	Х顼 (ʥꥢ)
SIGPOLL		Term	ݡ󥰲ǽʥ٥ (Sys V)
			\fBSIGIO\fP Ʊ
SIGPROF	27,27,29	Term	profiling ޤλڤ
SIGSYS	12,\-,12	Core	롼ؤΰ (SVr4)
SIGTRAP	5	Core	ȥ졼/֥졼ݥ ȥå
SIGURG	16,23,21	Ign	T{
åȤζ۵޻ (urgent condition) (4.2BSD)
T}
SIGVTALRM	26,26,28	Term	ۥ顼९å (4.2BSD)
SIGXCPU	24,24,30	Core	CPUĶ (4.2BSD)
SIGXFSZ	25,25,31	Core	ե륵¤Ķ (4.2BSD)
.TE

Linux 2.2 Ǥϡ
.BR SIGSYS ", " SIGXCPU ", " SIGXFSZ
 SPARC  MIPS ʳΥƥǤ
.B SIGBUS
ΥǥեȤο񤤤 (׽Ϥʤ) ץλǤä
(¾ Unix ƥˤ
.BR SIGXCPU "  " SIGXFSZ
ΥǥեȤưפʤΥץλΤΤ롣)
Linux 2.4 ǤϡPOSIX.1-2001 Ǥ׵ͤ˽򤷤ơ
ΥʥǡץλפϤ
褦ˤʤäƤ롣

ˤ¾γƼ亮ʥ򼨤
.TS
l c c l
____
lB c c l.
ʥ		ư	
SIGIOT	6	C	IOT ȥåס\fBSIGABRT\fP Ʊ
SIGEMT	7,\-,7	
SIGSTKFLT	\-,16,\-	A	T{
ͱ黻ץåˤ륹åե (̤)
T}
SIGIO	23,29,22	A	Ϥǽˤʤä (4.2BSD)
SIGCLD	\-,\-,18	 	\fBSIGCHLD\fP Ʊ
SIGPWR	29,30,19	A	ŸӼ (Power failure) (System V)
SIGINFO	29,\-,\-	 	\fBSIGPWR\fP Ʊ
SIGLOST	\-,\-,\-	A	եå줿
SIGWINCH	28,28,20	B	T{
ɥ ꥵ ʥ (4.3BSD, Sun)
T}
SIGUNUSED	\-,31,\-	A	̤ѥʥ (\fBSIGSYS\fP Ȥʤ)
.TE

(ʥ 29  alpha Ǥ
.B SIGINFO
/
.B SIGPWR
sparc Ǥ
.B SIGLOST
Ǥ롣)

.B SIGEMT
 POSIX.1-2001 ˵ꤵƤʤ
¾¿ Unix ƥ¸ߤ롣
ǥեȤư¿ξ硢׽ϤȼץνλǤ롣

.B SIGPWR
 (POSIX.1-2001 ˵ꤵƤʤ) Υʥ뤬¸ߤ
¾ Unix ƥǤ¿ξ硢ǥեư̵Ǥ롣

.B SIGIO
 (POSIX.1-2001 ˵ꤵƤʤ) Ĥ¾ Unix ƥǤ
ǥեư̵Ǥ롣

.SS ꥢ륿ॷʥ
бƤꥢ륿ॷʥϰϤϡޥ
.B SIGRTMIN

.B SIGRTMAX
롣
POSIX.1-2001 ǤϡʤȤ
.B _POSIX_RTSIG_MAX
(8) ĤΥꥢ륿ॷʥб׵ᤵƤ롣
.PP
Linux ϡ32 Ĥΰۤʤꥢ륿ॷʥбƤꡢ
ֹ 33  64 Ǥ롣
ʤ顢glibc  POSIX åɼϡ
 2 (NPTL ξ)  3 (LinuxThreads ξ) 
ꥢ륿ॷʥѤƤ
.RB ( pthreads (7)
)
.B SIGRTMIN
ͤŬڤ (34  35 ) Ĵ롣
Ѳǽʥꥢ륿ॷʥϰϤ glibc Υåɼˤ
ۤʤ뤷 (Ѥ륫ͥ glibc ˤ¹ԻˤѲ)
Unix ƥμˤäƤۤʤ롣äơ
ץǤϡ֥ϡɥǥ󥰤ȤäƤΥꥢ륿ॷʥ
ȤϷ褷Ƥ٤ǤϤʤס
.BR SIGRTMIN +n
ηǻȤ٤Ǥ롣ޤ
.BR SIGRTMIN +n

.B SIGRTMAX
ĶƤʤΥå (¹Ի) Ŭڤ˹Ԥ٤Ǥ롣
.PP
ɸॷʥȰۤʤꡢꥢ륿ॷʥˤ
줿̣Ϥʤ
ꥢ륿ॷʥ򥢥ץꥱӤ˻Ȥ롣
(âLinuxThreads ǡꥢ륿ॷʥֹΤ
ǽ 3ĤѤƤդ뤳)
.PP
ϥɥ󥰤ʤꥢ륿ॷʥΥǥեȤư
ץνλǤ롣
.PP
ꥢ륿ॷʥϰʲħ:
.IP 1. 4
ꥢ륿ॷʥʣμΤ򥭥塼뤳ȤǤ롣
ɸॷʥξ硢Υʥ뤬֥åƤ֤
ƱʥʣΥ󥹥󥹤Ƥ⡢
1 Ĥ塼롣
.IP 2. 4
ʥ뤬
.BR sigqueue (2)
Ѥ줿硢
°ǡ (ݥ) 򥷥ʥȶǤ롣
¦ץ
.BR sigaction (2)

.B SA_SIGINFO
ե饰ꤷƥʥϥɥꤷ硢
Υǡ
.I siginfo_t
¤Τ
.I si_value
եɷͳǥϥɥ 2 ȤϤ졢
Ѥ뤳ȤǤ롣
ˡι¤Τ
.I si_pid

.I si_uid
եɤǥʥץ PID ȼ¥桼 ID 
뤳ȤǤ롣
.IP 3. 4
ꥢ륿ॷʥǤݾڤ롣
ƱפΥꥢ륿ॷʥ줿֤夹롣
ۤʤꥢ륿ॷʥ뤬ĤΥץ줿硢
ֹξʥ뤫夹롣
(Ĥޤ꾮ֹΥʥ뤬⤤̤ͥġ)
.PP
ĤΥץФɸॷʥȥꥢ륿ॷʥξ
Ԥξ硢POSIX Ϥɤ餬뤫ꤷƤʤ
Linux Ǥϡ¾¿μƱ͡Τ褦ʾˤ
ɸॷʥ뤬ͥ褵롣
.PP
POSIX ˤС1 ץ˺
.B _POSIX_SIGQUEUE_MAX
(32) ĤΥꥢ륿ॷʥ򥭥塼٤ȤƤ롣
 Linux ǤϰäˤʤäƤ롣ͥ 2.6.7 ޤǤ
(2.6.7 ޤ)ץǥ塼äƤꥢ륿ॷʥ
οιפˤĤƥƥΤǤ¤롣
¤
.I /proc/sys/kernel/rtsig-max
եǸ뤳ȤǤ (¤) ѹǤ롣
طեȤơ
.I /proc/sys/kernel/rtsig-nr
򸫤뤳ȤǡĤΥꥢ륿ॷʥ뤬ߥ塼äƤ뤫
Τ뤳ȤǤ롣
Linux 2.6.8 ǡ
.I /proc
ͳΥ󥿡եϡ
.B RLIMIT_SIGPENDING
꥽¤֤줿
ϡ塼륷ʥ˴ؤƥ桼ñ̤
¤ꤹΤǤ롣
ܤ
.BR setrlimit (2)
򻲾ȡ
.SS "Ʊʥǰʴؿ (async-signal-safe functions)"
.PP
¾ξνϥץ¹ԤǤդβսǤ뤿ᡢ
.BR sigaction (2)

.BR signal (2)
Ͽ륷ʥϥɥؿˤդʤФʤʤ
POSIX ˤϡְʴؿ (safe function)פȤǰ롣
ʥ뤬Ǥʤؿμ¹ԤǤ
.I handler
ǤʤؿƤӽФ硢ץεư̤Ǥ롣
POSIX.1-2003 Ǥϡ
ʥϥɥǤΰʸƤӽФݾڤ뤳ȤɬܤδؿȤ
ʲꤵƤ롣

.in +4
.nf
_Exit()
_exit()
abort()
accept()
access()
aio_error()
aio_return()
aio_suspend()
alarm()
bind()
cfgetispeed()
cfgetospeed()
cfsetispeed()
cfsetospeed()
chdir()
chmod()
chown()
clock_gettime()
close()
connect()
creat()
dup()
dup2()
execle()
execve()
fchmod()
fchown()
fcntl()
fdatasync()
fork()
fpathconf()
fstat()
fsync()
ftruncate()
getegid()
geteuid()
getgid()
getgroups()
getpeername()
getpgrp()
getpid()
getppid()
getsockname()
getsockopt()
getuid()
kill()
link()
listen()
lseek()
lstat()
mkdir()
mkfifo()
open()
pathconf()
pause()
pipe()
poll()
posix_trace_event()
pselect()
raise()
read()
readlink()
recv()
recvfrom()
recvmsg()
rename()
rmdir()
select()
sem_post()
send()
sendmsg()
sendto()
setgid()
setpgid()
setsid()
setsockopt()
setuid()
shutdown()
sigaction()
sigaddset()
sigdelset()
sigemptyset()
sigfillset()
sigismember()
signal()
sigpause()
sigpending()
sigprocmask()
sigqueue()
sigset()
sigsuspend()
sleep()
socket()
socketpair()
stat()
symlink()
sysconf()
tcdrain()
tcflow()
tcflush()
tcgetattr()
tcgetpgrp()
tcsendbreak()
tcsetattr()
tcsetpgrp()
time()
timer_getoverrun()
timer_gettime()
timer_settime()
times()
umask()
uname()
unlink()
utime()
wait()
waitpid()
write()
.fi
.in
.SH 
POSIX.1
.SH Х
.B SIGIO

.B SIGLOST
ƱͤäƤ롣
.B SIGLOST
ϥͥΥǤϥȥȤƤ롣
եȥˤäƤϥӥɤβǥʥ 29 
.B SIGLOST
ȤߤʤƤޤΤ롣
.SH Ϣ
.BR kill (1),
.BR kill (2),
.BR kill\%pg (2),
.BR set\%itimer (2),
.BR set\%rlimit (2),
.BR sget\%mask (2),
.BR sig\%action (2),
.BR sig\%nal (2),
.BR signalfd (2),
.BR sig\%pend\%ing (2),
.BR sig\%proc\%mask (2),
.BR sig\%queue (2),
.BR sig\%suspend (2),
.BR sig\%waitinfo (2),
.BR bsd\%_signal (3),
.BR raise (3),
.BR sig\%vec (3),
.BR sig\%set (3),
.BR str\%signal (3),
.BR sysv\%_signal (3),
.BR core (5),
.BR proc (5),
.BR pthreads (7)