#, fuzzy
msgid ""
msgstr ""
"Project-Id-Version: man-pages-l10n VERSION\n"
"POT-Creation-Date: 2014-07-17 17:57+0900\n"
"MIME-Version: 1.0\n"
"Content-Type: text/plain; charset=UTF-8\n"
"Content-Transfer-Encoding: 8bit\n"

#. type: TH
#: man-pages/man7/signal.7:46
#, no-wrap
msgid "SIGNAL"
msgstr ""

#. type: TH
#: man-pages/man7/signal.7:46
#, no-wrap
msgid "2014-06-13"
msgstr ""

#. type: TH
#: man-pages/man7/signal.7:46
#, no-wrap
msgid "Linux"
msgstr ""

#. type: TH
#: man-pages/man7/signal.7:46
#, no-wrap
msgid "Linux Programmer's Manual"
msgstr ""

#. type: SH
#: man-pages/man7/signal.7:47
#, no-wrap
msgid "NAME"
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:49
msgid "signal - overview of signals"
msgstr ""

#. type: SH
#: man-pages/man7/signal.7:49
#, no-wrap
msgid "DESCRIPTION"
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:52
msgid ""
"Linux supports both POSIX reliable signals (hereinafter \"standard "
"signals\") and POSIX real-time signals."
msgstr ""

#. type: SS
#: man-pages/man7/signal.7:52
#, no-wrap
msgid "Signal dispositions"
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:57
msgid ""
"Each signal has a current I<disposition>, which determines how the process "
"behaves when it is delivered the signal."
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:60
msgid ""
"The entries in the \"Action\" column of the tables below specify the default "
"disposition for each signal, as follows:"
msgstr ""

#. type: IP
#: man-pages/man7/signal.7:60
#, no-wrap
msgid "Term"
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:62
msgid "Default action is to terminate the process."
msgstr ""

#. type: IP
#: man-pages/man7/signal.7:62
#, no-wrap
msgid "Ign"
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:64
msgid "Default action is to ignore the signal."
msgstr ""

#. type: IP
#: man-pages/man7/signal.7:64
#, no-wrap
msgid "Core"
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:67
msgid ""
"Default action is to terminate the process and dump core (see B<core>(5))."
msgstr ""

#. type: IP
#: man-pages/man7/signal.7:67
#, no-wrap
msgid "Stop"
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:69
msgid "Default action is to stop the process."
msgstr ""

#. type: IP
#: man-pages/man7/signal.7:69
#, no-wrap
msgid "Cont"
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:71
msgid "Default action is to continue the process if it is currently stopped."
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:93
msgid ""
"A process can change the disposition of a signal using B<sigaction>(2)  or "
"B<signal>(2).  (The latter is less portable when establishing a signal "
"handler; see B<signal>(2)  for details.)  Using these system calls, a "
"process can elect one of the following behaviors to occur on delivery of the "
"signal: perform the default action; ignore the signal; or catch the signal "
"with a I<signal handler>, a programmer-defined function that is "
"automatically invoked when the signal is delivered.  (By default, the signal "
"handler is invoked on the normal process stack.  It is possible to arrange "
"that the signal handler uses an alternate stack; see B<sigaltstack>(2)  for "
"a discussion of how to do this and when it might be useful.)"
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:97
msgid ""
"The signal disposition is a per-process attribute: in a multithreaded "
"application, the disposition of a particular signal is the same for all "
"threads."
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:105
msgid ""
"A child created via B<fork>(2)  inherits a copy of its parent's signal "
"dispositions.  During an B<execve>(2), the dispositions of handled signals "
"are reset to the default; the dispositions of ignored signals are left "
"unchanged."
msgstr ""

#. type: SS
#: man-pages/man7/signal.7:105
#, no-wrap
msgid "Sending a signal"
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:108
msgid ""
"The following system calls and library functions allow the caller to send a "
"signal:"
msgstr ""

#. type: TP
#: man-pages/man7/signal.7:108
#, no-wrap
msgid "B<raise>(3)"
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:111
msgid "Sends a signal to the calling thread."
msgstr ""

#. type: TP
#: man-pages/man7/signal.7:111
#, no-wrap
msgid "B<kill>(2)"
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:116
msgid ""
"Sends a signal to a specified process, to all members of a specified process "
"group, or to all processes on the system."
msgstr ""

#. type: TP
#: man-pages/man7/signal.7:116
#, no-wrap
msgid "B<killpg>(2)"
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:119
msgid "Sends a signal to all of the members of a specified process group."
msgstr ""

#. type: TP
#: man-pages/man7/signal.7:119
#, no-wrap
msgid "B<pthread_kill>(3)"
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:123
msgid ""
"Sends a signal to a specified POSIX thread in the same process as the caller."
""
msgstr ""

#. type: TP
#: man-pages/man7/signal.7:123
#, no-wrap
msgid "B<tgkill>(2)"
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:128
msgid ""
"Sends a signal to a specified thread within a specific process.  (This is "
"the system call used to implement B<pthread_kill>(3).)"
msgstr ""

#. type: TP
#: man-pages/man7/signal.7:128
#, no-wrap
msgid "B<sigqueue>(3)"
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:131
msgid ""
"Sends a real-time signal with accompanying data to a specified process."
msgstr ""

#. type: SS
#: man-pages/man7/signal.7:131
#, no-wrap
msgid "Waiting for a signal to be caught"
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:135
msgid ""
"The following system calls suspend execution of the calling process or "
"thread until a signal is caught (or an unhandled signal terminates the "
"process):"
msgstr ""

#. type: TP
#: man-pages/man7/signal.7:135
#, no-wrap
msgid "B<pause>(2)"
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:138
msgid "Suspends execution until any signal is caught."
msgstr ""

#. type: TP
#: man-pages/man7/signal.7:138
#, no-wrap
msgid "B<sigsuspend>(2)"
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:142
msgid ""
"Temporarily changes the signal mask (see below) and suspends execution until "
"one of the unmasked signals is caught."
msgstr ""

#. type: SS
#: man-pages/man7/signal.7:142
#, no-wrap
msgid "Synchronously accepting a signal"
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:149
msgid ""
"Rather than asynchronously catching a signal via a signal handler, it is "
"possible to synchronously accept the signal, that is, to block execution "
"until the signal is delivered, at which point the kernel returns information "
"about the signal to the caller.  There are two general ways to do this:"
msgstr ""

#. type: IP
#: man-pages/man7/signal.7:149 man-pages/man7/signal.7:157 man-pages/man7/signal.7:615 man-pages/man7/signal.7:617 man-pages/man7/signal.7:638 man-pages/man7/signal.7:653 man-pages/man7/signal.7:657 man-pages/man7/signal.7:664 man-pages/man7/signal.7:682 man-pages/man7/signal.7:688 man-pages/man7/signal.7:695 man-pages/man7/signal.7:700 man-pages/man7/signal.7:719 man-pages/man7/signal.7:733 man-pages/man7/signal.7:744 man-pages/man7/signal.7:751 man-pages/man7/signal.7:760 man-pages/man7/signal.7:768 man-pages/man7/signal.7:774 man-pages/man7/signal.7:779 man-pages/man7/signal.7:799 man-pages/man7/signal.7:813 man-pages/man7/signal.7:827 man-pages/man7/signal.7:830 man-pages/man7/signal.7:833 man-pages/man7/signal.7:836 man-pages/man7/signal.7:841 man-pages/man7/signal.7:847 man-pages/man7/signal.7:851
#, no-wrap
msgid "*"
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:157
msgid ""
"B<sigwaitinfo>(2), B<sigtimedwait>(2), and B<sigwait>(3)  suspend execution "
"until one of the signals in a specified set is delivered.  Each of these "
"calls returns information about the delivered signal."
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:170
msgid ""
"B<signalfd>(2)  returns a file descriptor that can be used to read "
"information about signals that are delivered to the caller.  Each B<read>(2) "
" from this file descriptor blocks until one of the signals in the set "
"specified in the B<signalfd>(2)  call is delivered to the caller.  The "
"buffer returned by B<read>(2)  contains a structure describing the signal."
msgstr ""

#. type: SS
#: man-pages/man7/signal.7:170
#, no-wrap
msgid "Signal mask and pending signals"
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:177
msgid ""
"A signal may be I<blocked>, which means that it will not be delivered until "
"it is later unblocked.  Between the time when it is generated and when it is "
"delivered a signal is said to be I<pending>."
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:186
msgid ""
"Each thread in a process has an independent I<signal mask>, which indicates "
"the set of signals that the thread is currently blocking.  A thread can "
"manipulate its signal mask using B<pthread_sigmask>(3).  In a traditional "
"single-threaded application, B<sigprocmask>(2)  can be used to manipulate "
"the signal mask."
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:192
msgid ""
"A child created via B<fork>(2)  inherits a copy of its parent's signal mask; "
"the signal mask is preserved across B<execve>(2)."
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:209
msgid ""
"A signal may be generated (and thus pending)  for a process as a whole (e.g."
", when sent using B<kill>(2))  or for a specific thread (e.g., certain "
"signals, such as B<SIGSEGV> and B<SIGFPE>, generated as a consequence of "
"executing a specific machine-language instruction are thread directed, as "
"are signals targeted at a specific thread using B<pthread_kill>(3)).  A "
"process-directed signal may be delivered to any one of the threads that does "
"not currently have the signal blocked.  If more than one of the threads has "
"the signal unblocked, then the kernel chooses an arbitrary thread to which "
"to deliver the signal."
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:216
msgid ""
"A thread can obtain the set of signals that it currently has pending using "
"B<sigpending>(2).  This set will consist of the union of the set of pending "
"process-directed signals and the set of signals pending for the calling "
"thread."
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:222
msgid ""
"A child created via B<fork>(2)  initially has an empty pending signal set; "
"the pending signal set is preserved across an B<execve>(2)."
msgstr ""

#. type: SS
#: man-pages/man7/signal.7:222
#, no-wrap
msgid "Standard signals"
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:234
msgid ""
"Linux supports the standard signals listed below.  Several signal numbers "
"are architecture-dependent, as indicated in the \"Value\" column.  (Where "
"three values are given, the first one is usually valid for alpha and sparc, "
"the middle one for x86, arm, and most other architectures, and the last one "
"for mips.  (Values for parisc are I<not> shown; see the Linux kernel source "
"for signal numbering on that architecture.)  A - denotes that a signal is "
"absent on the corresponding architecture.)"
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:236
msgid "First the signals described in the original POSIX.1-1990 standard."
msgstr ""

#. type: tbl table
#: man-pages/man7/signal.7:240 man-pages/man7/signal.7:276 man-pages/man7/signal.7:305
#, no-wrap
msgid "Signal	Value	Action	Comment\n"
msgstr ""

#. type: tbl table
#: man-pages/man7/signal.7:241
#, no-wrap
msgid "SIGHUP	\\01	Term	Hangup detected on controlling terminal\n"
msgstr ""

#. type: tbl table
#: man-pages/man7/signal.7:242
#, no-wrap
msgid "			or death of controlling process\n"
msgstr ""

#. type: tbl table
#: man-pages/man7/signal.7:243
#, no-wrap
msgid "SIGINT	\\02	Term	Interrupt from keyboard\n"
msgstr ""

#. type: tbl table
#: man-pages/man7/signal.7:244
#, no-wrap
msgid "SIGQUIT	\\03	Core	Quit from keyboard\n"
msgstr ""

#. type: tbl table
#: man-pages/man7/signal.7:245
#, no-wrap
msgid "SIGILL	\\04	Core	Illegal Instruction\n"
msgstr ""

#. type: tbl table
#: man-pages/man7/signal.7:246
#, no-wrap
msgid "SIGABRT	\\06	Core	Abort signal from B<abort>(3)\n"
msgstr ""

#. type: tbl table
#: man-pages/man7/signal.7:247
#, no-wrap
msgid "SIGFPE	\\08	Core	Floating point exception\n"
msgstr ""

#. type: tbl table
#: man-pages/man7/signal.7:248
#, no-wrap
msgid "SIGKILL	\\09	Term	Kill signal\n"
msgstr ""

#. type: tbl table
#: man-pages/man7/signal.7:249
#, no-wrap
msgid "SIGSEGV	11	Core	Invalid memory reference\n"
msgstr ""

#. type: tbl table
#: man-pages/man7/signal.7:250
#, no-wrap
msgid "SIGPIPE	13	Term	Broken pipe: write to pipe with no\n"
msgstr ""

#. type: tbl table
#: man-pages/man7/signal.7:251
#, no-wrap
msgid "			readers\n"
msgstr ""

#. type: tbl table
#: man-pages/man7/signal.7:252
#, no-wrap
msgid "SIGALRM	14	Term	Timer signal from B<alarm>(2)\n"
msgstr ""

#. type: tbl table
#: man-pages/man7/signal.7:253
#, no-wrap
msgid "SIGTERM	15	Term	Termination signal\n"
msgstr ""

#. type: tbl table
#: man-pages/man7/signal.7:254
#, no-wrap
msgid "SIGUSR1	30,10,16	Term	User-defined signal 1\n"
msgstr ""

#. type: tbl table
#: man-pages/man7/signal.7:255
#, no-wrap
msgid "SIGUSR2	31,12,17	Term	User-defined signal 2\n"
msgstr ""

#. type: tbl table
#: man-pages/man7/signal.7:256
#, no-wrap
msgid "SIGCHLD	20,17,18	Ign	Child stopped or terminated\n"
msgstr ""

#. type: tbl table
#: man-pages/man7/signal.7:257
#, no-wrap
msgid "SIGCONT	19,18,25	Cont	Continue if stopped\n"
msgstr ""

#. type: tbl table
#: man-pages/man7/signal.7:258
#, no-wrap
msgid "SIGSTOP	17,19,23	Stop	Stop process\n"
msgstr ""

#. type: tbl table
#: man-pages/man7/signal.7:259
#, no-wrap
msgid "SIGTSTP	18,20,24	Stop	Stop typed at terminal\n"
msgstr ""

#. type: tbl table
#: man-pages/man7/signal.7:260
#, no-wrap
msgid "SIGTTIN	21,21,26	Stop	Terminal input for background process\n"
msgstr ""

#. type: tbl table
#: man-pages/man7/signal.7:261
#, no-wrap
msgid "SIGTTOU	22,22,27	Stop	Terminal output for background process\n"
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:269
msgid ""
"The signals B<SIGKILL> and B<SIGSTOP> cannot be caught, blocked, or ignored."
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:272
msgid ""
"Next the signals not in the POSIX.1-1990 standard but described in SUSv2 and "
"POSIX.1-2001."
msgstr ""

#. type: tbl table
#: man-pages/man7/signal.7:277
#, no-wrap
msgid "SIGBUS	10,7,10	Core	Bus error (bad memory access)\n"
msgstr ""

#. type: tbl table
#: man-pages/man7/signal.7:278
#, no-wrap
msgid "SIGPOLL		Term	Pollable event (Sys V).\n"
msgstr ""

#. type: tbl table
#: man-pages/man7/signal.7:279
#, no-wrap
msgid "			Synonym for B<SIGIO>\n"
msgstr ""

#. type: tbl table
#: man-pages/man7/signal.7:280
#, no-wrap
msgid "SIGPROF	27,27,29	Term	Profiling timer expired\n"
msgstr ""

#. type: tbl table
#: man-pages/man7/signal.7:281
#, no-wrap
msgid "SIGSYS	12,31,12	Core	Bad argument to routine (SVr4)\n"
msgstr ""

#. type: tbl table
#: man-pages/man7/signal.7:282
#, no-wrap
msgid "SIGTRAP	5	Core	Trace/breakpoint trap\n"
msgstr ""

#. type: tbl table
#: man-pages/man7/signal.7:283
#, no-wrap
msgid "SIGURG	16,23,21	Ign	Urgent condition on socket (4.2BSD)\n"
msgstr ""

#. type: tbl table
#: man-pages/man7/signal.7:284
#, no-wrap
msgid "SIGVTALRM	26,26,28	Term	Virtual alarm clock (4.2BSD)\n"
msgstr ""

#. type: tbl table
#: man-pages/man7/signal.7:285
#, no-wrap
msgid "SIGXCPU	24,24,30	Core	CPU time limit exceeded (4.2BSD)\n"
msgstr ""

#. type: tbl table
#: man-pages/man7/signal.7:286
#, no-wrap
msgid "SIGXFSZ	25,25,31	Core	File size limit exceeded (4.2BSD)\n"
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:299
msgid ""
"Up to and including Linux 2.2, the default behavior for B<SIGSYS>, "
"B<SIGXCPU>, B<SIGXFSZ>, and (on architectures other than SPARC and MIPS)  "
"B<SIGBUS> was to terminate the process (without a core dump).  (On some "
"other UNIX systems the default action for B<SIGXCPU> and B<SIGXFSZ> is to "
"terminate the process without a core dump.)  Linux 2.4 conforms to the POSIX."
"1-2001 requirements for these signals, terminating the process with a core "
"dump."
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:301
msgid "Next various other signals."
msgstr ""

#. type: tbl table
#: man-pages/man7/signal.7:306
#, no-wrap
msgid "SIGIOT	6	Core	IOT trap. A synonym for B<SIGABRT>\n"
msgstr ""

#. type: tbl table
#: man-pages/man7/signal.7:307
#, no-wrap
msgid "SIGEMT	7,-,7	Term\n"
msgstr ""

#. type: tbl table
#: man-pages/man7/signal.7:308
#, no-wrap
msgid "SIGSTKFLT	-,16,-	Term	Stack fault on coprocessor (unused)\n"
msgstr ""

#. type: tbl table
#: man-pages/man7/signal.7:309
#, no-wrap
msgid "SIGIO	23,29,22	Term	I/O now possible (4.2BSD)\n"
msgstr ""

#. type: tbl table
#: man-pages/man7/signal.7:310
#, no-wrap
msgid "SIGCLD	-,-,18	Ign	A synonym for B<SIGCHLD>\n"
msgstr ""

#. type: tbl table
#: man-pages/man7/signal.7:311
#, no-wrap
msgid "SIGPWR	29,30,19	Term	Power failure (System V)\n"
msgstr ""

#. type: tbl table
#: man-pages/man7/signal.7:312
#, no-wrap
msgid "SIGINFO	29,-,-		A synonym for B<SIGPWR>\n"
msgstr ""

#. type: tbl table
#: man-pages/man7/signal.7:313
#, no-wrap
msgid "SIGLOST	-,-,-	Term	File lock lost (unused)\n"
msgstr ""

#. type: tbl table
#: man-pages/man7/signal.7:314
#, no-wrap
msgid "SIGWINCH	28,28,20	Ign	Window resize signal (4.3BSD, Sun)\n"
msgstr ""

#. type: tbl table
#: man-pages/man7/signal.7:315
#, no-wrap
msgid "SIGUNUSED	-,31,-	Core	Synonymous with B<SIGSYS>\n"
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:325
msgid ""
"(Signal 29 is B<SIGINFO> / B<SIGPWR> on an alpha but B<SIGLOST> on a sparc.)"
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:331
msgid ""
"B<SIGEMT> is not specified in POSIX.1-2001, but nevertheless appears on most "
"other UNIX systems, where its default action is typically to terminate the "
"process with a core dump."
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:335
msgid ""
"B<SIGPWR> (which is not specified in POSIX.1-2001) is typically ignored by "
"default on those other UNIX systems where it appears."
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:339
msgid ""
"B<SIGIO> (which is not specified in POSIX.1-2001) is ignored by default on "
"several other UNIX systems."
msgstr ""

#.  parisc is the only exception: SIGSYS is 12, SIGUNUSED is 31
#. type: Plain text
#: man-pages/man7/signal.7:346
msgid ""
"Where defined, B<SIGUNUSED> is synonymous with B<SIGSYS> on most "
"architectures."
msgstr ""

#. type: SS
#: man-pages/man7/signal.7:346
#, no-wrap
msgid "Real-time signals"
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:356
msgid ""
"Linux supports real-time signals as originally defined in the POSIX.1b real-"
"time extensions (and now included in POSIX.1-2001).  The range of supported "
"real-time signals is defined by the macros B<SIGRTMIN> and B<SIGRTMAX>.  "
"POSIX.1-2001 requires that an implementation support at least "
"B<_POSIX_RTSIG_MAX> (8) real-time signals."
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:378
msgid ""
"The Linux kernel supports a range of 32 different real-time signals, "
"numbered 33 to 64.  However, the glibc POSIX threads implementation "
"internally uses two (for NPTL) or three (for LinuxThreads) real-time signals "
"(see B<pthreads>(7)), and adjusts the value of B<SIGRTMIN> suitably (to 34 "
"or 35).  Because the range of available real-time signals varies according "
"to the glibc threading implementation (and this variation can occur at run "
"time according to the available kernel and glibc), and indeed the range of "
"real-time signals varies across UNIX systems, programs should I<never refer "
"to real-time signals using hard-coded numbers>, but instead should always "
"refer to real-time signals using the notation B<SIGRTMIN>+n, and include "
"suitable (run-time) checks that B<SIGRTMIN>+n does not exceed B<SIGRTMAX>."
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:382
msgid ""
"Unlike standard signals, real-time signals have no predefined meanings: the "
"entire set of real-time signals can be used for application-defined purposes."
""
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:385
msgid ""
"The default action for an unhandled real-time signal is to terminate the "
"receiving process."
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:387
msgid "Real-time signals are distinguished by the following:"
msgstr ""

#. type: IP
#: man-pages/man7/signal.7:387
#, no-wrap
msgid "1."
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:391
msgid ""
"Multiple instances of real-time signals can be queued.  By contrast, if "
"multiple instances of a standard signal are delivered while that signal is "
"currently blocked, then only one instance is queued."
msgstr ""

#. type: IP
#: man-pages/man7/signal.7:391
#, no-wrap
msgid "2."
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:411
msgid ""
"If the signal is sent using B<sigqueue>(3), an accompanying value (either an "
"integer or a pointer) can be sent with the signal.  If the receiving process "
"establishes a handler for this signal using the B<SA_SIGINFO> flag to "
"B<sigaction>(2), then it can obtain this data via the I<si_value> field of "
"the I<siginfo_t> structure passed as the second argument to the handler.  "
"Furthermore, the I<si_pid> and I<si_uid> fields of this structure can be "
"used to obtain the PID and real user ID of the process sending the signal."
msgstr ""

#. type: IP
#: man-pages/man7/signal.7:411
#, no-wrap
msgid "3."
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:420
msgid ""
"Real-time signals are delivered in a guaranteed order.  Multiple real-time "
"signals of the same type are delivered in the order they were sent.  If "
"different real-time signals are sent to a process, they are delivered "
"starting with the lowest-numbered signal.  (I.e., low-numbered signals have "
"highest priority.)  By contrast, if multiple standard signals are pending "
"for a process, the order in which they are delivered is unspecified."
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:425
msgid ""
"If both standard and real-time signals are pending for a process, POSIX "
"leaves it unspecified which is delivered first.  Linux, like many other "
"implementations, gives priority to standard signals in this case."
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:448
msgid ""
"According to POSIX, an implementation should permit at least "
"B<_POSIX_SIGQUEUE_MAX> (32) real-time signals to be queued to a process.  "
"However, Linux does things differently.  In kernels up to and including 2.6."
"7, Linux imposes a system-wide limit on the number of queued real-time "
"signals for all processes.  This limit can be viewed and (with privilege) "
"changed via the I</proc/sys/kernel/rtsig-max> file.  A related file, I</proc/"
"sys/kernel/rtsig-nr>, can be used to find out how many real-time signals are "
"currently queued.  In Linux 2.6.8, these I</proc> interfaces were replaced "
"by the B<RLIMIT_SIGPENDING> resource limit, which specifies a per-user limit "
"for queued signals; see B<setrlimit>(2)  for further details."
msgstr ""

#. type: SS
#: man-pages/man7/signal.7:448
#, no-wrap
msgid "Async-signal-safe functions"
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:457
msgid ""
"A signal handler function must be very careful, since processing elsewhere "
"may be interrupted at some arbitrary point in the execution of the program.  "
"POSIX has the concept of \"safe function\".  If a signal interrupts the "
"execution of an unsafe function, and I<handler> calls an unsafe function, "
"then the behavior of the program is undefined."
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:461
msgid ""
"POSIX.1-2004 (also known as POSIX.1-2001 Technical Corrigendum 2)  requires "
"an implementation to guarantee that the following functions can be safely "
"called inside a signal handler:"
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:582
#, no-wrap
msgid ""
"_Exit()\n"
"_exit()\n"
"abort()\n"
"accept()\n"
"access()\n"
"aio_error()\n"
"aio_return()\n"
"aio_suspend()\n"
"alarm()\n"
"bind()\n"
"cfgetispeed()\n"
"cfgetospeed()\n"
"cfsetispeed()\n"
"cfsetospeed()\n"
"chdir()\n"
"chmod()\n"
"chown()\n"
"clock_gettime()\n"
"close()\n"
"connect()\n"
"creat()\n"
"dup()\n"
"dup2()\n"
"execle()\n"
"execve()\n"
"fchmod()\n"
"fchown()\n"
"fcntl()\n"
"fdatasync()\n"
"fork()\n"
"fpathconf()\n"
"fstat()\n"
"fsync()\n"
"ftruncate()\n"
"getegid()\n"
"geteuid()\n"
"getgid()\n"
"getgroups()\n"
"getpeername()\n"
"getpgrp()\n"
"getpid()\n"
"getppid()\n"
"getsockname()\n"
"getsockopt()\n"
"getuid()\n"
"kill()\n"
"link()\n"
"listen()\n"
"lseek()\n"
"lstat()\n"
"mkdir()\n"
"mkfifo()\n"
"open()\n"
"pathconf()\n"
"pause()\n"
"pipe()\n"
"poll()\n"
"posix_trace_event()\n"
"pselect()\n"
"raise()\n"
"read()\n"
"readlink()\n"
"recv()\n"
"recvfrom()\n"
"recvmsg()\n"
"rename()\n"
"rmdir()\n"
"select()\n"
"sem_post()\n"
"send()\n"
"sendmsg()\n"
"sendto()\n"
"setgid()\n"
"setpgid()\n"
"setsid()\n"
"setsockopt()\n"
"setuid()\n"
"shutdown()\n"
"sigaction()\n"
"sigaddset()\n"
"sigdelset()\n"
"sigemptyset()\n"
"sigfillset()\n"
"sigismember()\n"
"signal()\n"
"sigpause()\n"
"sigpending()\n"
"sigprocmask()\n"
"sigqueue()\n"
"sigset()\n"
"sigsuspend()\n"
"sleep()\n"
"sockatmark()\n"
"socket()\n"
"socketpair()\n"
"stat()\n"
"symlink()\n"
"sysconf()\n"
"tcdrain()\n"
"tcflow()\n"
"tcflush()\n"
"tcgetattr()\n"
"tcgetpgrp()\n"
"tcsendbreak()\n"
"tcsetattr()\n"
"tcsetpgrp()\n"
"time()\n"
"timer_getoverrun()\n"
"timer_gettime()\n"
"timer_settime()\n"
"times()\n"
"umask()\n"
"uname()\n"
"unlink()\n"
"utime()\n"
"wait()\n"
"waitpid()\n"
"write()\n"
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:587
msgid ""
"POSIX.1-2008 removes fpathconf(), pathconf(), and sysconf()  from the above "
"list, and adds the following functions:"
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:610
#, no-wrap
msgid ""
"execl()\n"
"execv()\n"
"faccessat()\n"
"fchmodat()\n"
"fchownat()\n"
"fexecve()\n"
"fstatat()\n"
"futimens()\n"
"linkat()\n"
"mkdirat()\n"
"mkfifoat()\n"
"mknod()\n"
"mknodat()\n"
"openat()\n"
"readlinkat()\n"
"renameat()\n"
"symlinkat()\n"
"unlinkat()\n"
"utimensat()\n"
"utimes()\n"
msgstr ""

#. type: SS
#: man-pages/man7/signal.7:612
#, no-wrap
msgid "Interruption of system calls and library functions by signal handlers"
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:615
msgid ""
"If a signal handler is invoked while a system call or library function call "
"is blocked, then either:"
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:617
msgid ""
"the call is automatically restarted after the signal handler returns; or"
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:620
msgid "the call fails with the error B<EINTR>."
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:628
msgid ""
"Which of these two behaviors occurs depends on the interface and whether or "
"not the signal handler was established using the B<SA_RESTART> flag (see "
"B<sigaction>(2)).  The details vary across UNIX systems; below, the details "
"for Linux."
msgstr ""

#.  The following system calls use ERESTARTSYS,
#.  so that they are restartable
#. type: Plain text
#: man-pages/man7/signal.7:637
msgid ""
"If a blocked call to one of the following interfaces is interrupted by a "
"signal handler, then the call will be automatically restarted after the "
"signal handler returns if the B<SA_RESTART> flag was used; otherwise the "
"call will fail with the error B<EINTR>:"
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:653
msgid ""
"B<read>(2), B<readv>(2), B<write>(2), B<writev>(2), and B<ioctl>(2)  calls "
"on \"slow\" devices.  A \"slow\" device is one where the I/O call may block "
"for an indefinite time, for example, a terminal, pipe, or socket.  (A disk "
"is not a slow device according to this definition.)  If an I/O call on a "
"slow device has already transferred some data by the time it is interrupted "
"by a signal handler, then the call will return a success status (normally, "
"the number of bytes transferred)."
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:657
msgid ""
"B<open>(2), if it can block (e.g., when opening a FIFO; see B<fifo>(7))."
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:664
msgid "B<wait>(2), B<wait3>(2), B<wait4>(2), B<waitid>(2), and B<waitpid>(2)."
msgstr ""

#.  If a timeout (setsockopt()) is in effect on the socket, then these
#.  system calls switch to using EINTR.  Consequently, they and are not
#.  automatically restarted, and they show the stop/cont behavior
#.  described below.  (Verified from 2.6.26 source, and by experiment; mtk)
#.  FIXME What about sendmmsg()?
#. type: Plain text
#: man-pages/man7/signal.7:682
msgid ""
"Socket interfaces: B<accept>(2), B<connect>(2), B<recv>(2), B<recvfrom>(2), "
"B<recvmmsg>(2), B<recvmsg>(2), B<send>(2), B<sendto>(2), and B<sendmsg>(2), "
"unless a timeout has been set on the socket (see below)."
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:688
msgid "File locking interfaces: B<flock>(2)  and B<fcntl>(2)  B<F_SETLKW>."
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:695
msgid ""
"POSIX message queue interfaces: B<mq_receive>(3), B<mq_timedreceive>(3), "
"B<mq_send>(3), and B<mq_timedsend>(3)."
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:700
msgid ""
"B<futex>(2)  B<FUTEX_WAIT> (since Linux 2.6.22; beforehand, always failed "
"with B<EINTR>)."
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:707
msgid ""
"POSIX semaphore interfaces: B<sem_wait>(3)  and B<sem_timedwait>(3)  (since "
"Linux 2.6.22; beforehand, always failed with B<EINTR>)."
msgstr ""

#.  These are the system calls that give EINTR or ERESTARTNOHAND
#.  on interruption by a signal handler.
#. type: Plain text
#: man-pages/man7/signal.7:718
msgid ""
"The following interfaces are never restarted after being interrupted by a "
"signal handler, regardless of the use of B<SA_RESTART>; they always fail "
"with the error B<EINTR> when interrupted by a signal handler:"
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:733 man-pages/man7/signal.7:813
msgid ""
"\"Input\" socket interfaces, when a timeout (B<SO_RCVTIMEO>)  has been set "
"on the socket using B<setsockopt>(2): B<accept>(2), B<recv>(2), "
"B<recvfrom>(2), B<recvmmsg>(2)  (also with a non-NULL I<timeout> argument), "
"and B<recvmsg>(2)."
msgstr ""

#.  FIXME What about sendmmsg()?
#. type: Plain text
#: man-pages/man7/signal.7:744
msgid ""
"\"Output\" socket interfaces, when a timeout (B<SO_RCVTIMEO>)  has been set "
"on the socket using B<setsockopt>(2): B<connect>(2), B<send>(2), "
"B<sendto>(2), and B<sendmsg>(2)."
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:751
msgid ""
"Interfaces used to wait for signals: B<pause>(2), B<sigsuspend>(2), "
"B<sigtimedwait>(2), and B<sigwaitinfo>(2)."
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:760
msgid ""
"File descriptor multiplexing interfaces: B<epoll_wait>(2), "
"B<epoll_pwait>(2), B<poll>(2), B<ppoll>(2), B<select>(2), and B<pselect>(2)."
msgstr ""

#.  On some other systems, SA_RESTART does restart these system calls
#. type: Plain text
#: man-pages/man7/signal.7:768
msgid ""
"System V IPC interfaces: B<msgrcv>(2), B<msgsnd>(2), B<semop>(2), and "
"B<semtimedop>(2)."
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:774
msgid ""
"Sleep interfaces: B<clock_nanosleep>(2), B<nanosleep>(2), and B<usleep>(3)."
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:779 man-pages/man7/signal.7:841
msgid "B<read>(2)  from an B<inotify>(7)  file descriptor."
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:781
msgid "B<io_getevents>(2)."
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:787
msgid ""
"The B<sleep>(3)  function is also never restarted if interrupted by a "
"handler, but gives a success return: the number of seconds remaining to "
"sleep."
msgstr ""

#. type: SS
#: man-pages/man7/signal.7:787
#, no-wrap
msgid "Interruption of system calls and library functions by stop signals"
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:796
msgid ""
"On Linux, even in the absence of signal handlers, certain blocking "
"interfaces can fail with the error B<EINTR> after the process is stopped by "
"one of the stop signals and then resumed via B<SIGCONT>.  This behavior is "
"not sanctioned by POSIX.1, and doesn't occur on other systems."
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:798
msgid "The Linux interfaces that display this behavior are:"
msgstr ""

#.  FIXME What about sendmmsg()?
#. type: Plain text
#: man-pages/man7/signal.7:827
msgid ""
"\"Output\" socket interfaces, when a timeout (B<SO_RCVTIMEO>)  has been set "
"on the socket using B<setsockopt>(2): B<connect>(2), B<send>(2), "
"B<sendto>(2), and B<sendmsg>(2), if a send timeout (B<SO_SNDTIMEO>)  has "
"been set."
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:830
msgid "B<epoll_wait>(2), B<epoll_pwait>(2)."
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:833
msgid "B<semop>(2), B<semtimedop>(2)."
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:836
msgid "B<sigtimedwait>(2), B<sigwaitinfo>(2)."
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:847
msgid ""
"Linux 2.6.21 and earlier: B<futex>(2)  B<FUTEX_WAIT>, B<sem_timedwait>(3), "
"B<sem_wait>(3)."
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:851
msgid "Linux 2.6.8 and earlier: B<msgrcv>(2), B<msgsnd>(2)."
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:854
msgid "Linux 2.4 and earlier: B<nanosleep>(2)."
msgstr ""

#. type: SH
#: man-pages/man7/signal.7:855
#, no-wrap
msgid "CONFORMING TO"
msgstr ""

#.  It must be a *very* long time since this was true:
#.  .SH BUGS
#.  .B SIGIO
#.  and
#.  .B SIGLOST
#.  have the same value.
#.  The latter is commented out in the kernel source, but
#.  the build process of some software still thinks that
#.  signal 29 is
#.  .BR SIGLOST .
#. type: Plain text
#: man-pages/man7/signal.7:867
msgid "POSIX.1, except as noted."
msgstr ""

#. type: SH
#: man-pages/man7/signal.7:867
#, no-wrap
msgid "SEE ALSO"
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:901
msgid ""
"B<kill>(1), B<getrlimit>(2), B<kill>(2), B<killpg>(2), "
"B<restart_syscall>(2), B<rt_sigqueueinfo>(2), B<setitimer>(2), "
"B<setrlimit>(2), B<sgetmask>(2), B<sigaction>(2), B<sigaltstack>(2), "
"B<signal>(2), B<signalfd>(2), B<sigpending>(2), B<sigprocmask>(2), "
"B<sigsuspend>(2), B<sigwaitinfo>(2), B<abort>(3), B<bsd_signal>(3), "
"B<longjmp>(3), B<raise>(3), B<pthread_sigqueue>(3), B<sigqueue>(3), "
"B<sigset>(3), B<sigsetops>(3), B<sigvec>(3), B<sigwait>(3), B<strsignal>(3), "
"B<sysv_signal>(3), B<core>(5), B<proc>(5), B<pthreads>(7), B<sigevent>(7)"
msgstr ""

#. type: SH
#: man-pages/man7/signal.7:901
#, no-wrap
msgid "COLOPHON"
msgstr ""

#. type: Plain text
#: man-pages/man7/signal.7:909
msgid ""
"This page is part of release 3.70 of the Linux I<man-pages> project.  A "
"description of the project, information about reporting bugs, and the latest "
"version of this page, can be found at \\%http://www.kernel.org/doc/man-pages/"
"."
msgstr ""