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sigaction.2: Show the prototype of an SA_SIGINFO signal handler 

Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This commit is contained in:
Michael Kerrisk 2017-03-30 14:18:05 +02:00
parent 69ccc9f11d
commit 2a73d3e870
1 changed files with 21 additions and 4 deletions
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25
man2/sigaction.2
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@ -262,12 +262,29 @@ This flag is meaningful only when establishing a signal handler.
.\" .I sa_sigaction
.\" field was added in Linux 2.1.86.)
.RE
.PP
.SS The siginfo_t argument to a SA_SIGINFO handler
When the
.B SA_SIGINFO
flag is specified in
.IR act.sa_flags ,
the signal handler address is passed via the
.IR act.sa_sigaction
field.
This handler takes three arguments, as follows:
.nf
.in +4n
void
handler(int sig, siginfo_t *info, void *ucontext)
{
...
}
.in
.fi
The
.I siginfo_t
argument to
.I sa_sigaction
is a struct with the following fields:
data type is a structure with the following fields:
.sp
.in +4n
.nf