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sigaction.2: Add details for signals sent by POSIX message queue notifications 

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
Michael Kerrisk 2010-06-16 06:21:59 +02:00
parent 80752fa5f3
commit 5ffadafd3b
1 changed files with 16 additions and 1 deletions
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17
man2/sigaction.2
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@ -42,7 +42,7 @@
.\" 2010-06-11 Andi Kleen, add hwpoison signal extensions
.\" 2010-06-11 mtk, improvements to discussion of various siginfo_t fields.
.\"
.TH SIGACTION 2 2010-06-11 "Linux" "Linux Programmer's Manual"
.TH SIGACTION 2 2010-06-16 "Linux" "Linux Programmer's Manual"
.SH NAME
sigaction \- examine and change a signal action
.SH SYNOPSIS
@ -318,6 +318,21 @@ this is the same information as is obtained by a call to
.BR timer_getoverrun (2).
These fields are nonstandard Linux extensions.
.IP *
Signals sent for message queue notification (see the description of
.B SIGEV_SIGNAL
in
.BR mq_notify (3))
fill in
.IR si_int / si_ptr ,
with the
.I sigev_value
supplied to
.BR mq_notify (3);
.IR si_pid ,
with the process ID of the message sender; and
.IR si_uid ,
with the real user ID of the message sender.
.IP *
.B SIGCHLD
fills in
.IR si_pid ", " si_uid ", " si_status ", " si_utime " and " si_stime ,