| Rev | Line | |
|---|
| [9] | 1 | .TH SIGPROCMASK 2
|
|---|
| 2 | .SH NAME
|
|---|
| 3 | sigprocmask \- manipulate the signal mask
|
|---|
| 4 | .SH SYNOPSIS
|
|---|
| 5 | .ft B
|
|---|
| 6 | #include <signal.h>
|
|---|
| 7 |
|
|---|
| 8 | int sigprocmask(int \fIhow\fP, const sigset_t *\fIset\fP, sigset_t *\fIoset\fP)
|
|---|
| 9 | .ft P
|
|---|
| 10 | .SH DESCRIPTION
|
|---|
| 11 | .B Sigprocmask()
|
|---|
| 12 | examines or manipulates the signal mask. This mask is the set of signals
|
|---|
| 13 | that are currently blocked. The
|
|---|
| 14 | .I how
|
|---|
| 15 | argument determines the action that must be performed. In all cases the
|
|---|
| 16 | signal set referenced by
|
|---|
| 17 | .IR oset ,
|
|---|
| 18 | if not
|
|---|
| 19 | .BR NULL ,
|
|---|
| 20 | will be used to receive the old signal mask. The
|
|---|
| 21 | .I set
|
|---|
| 22 | argument, if not
|
|---|
| 23 | .BR NULL ,
|
|---|
| 24 | will be used to set or modify the current signal mask.
|
|---|
| 25 | .PP
|
|---|
| 26 | .I How
|
|---|
| 27 | can be one of:
|
|---|
| 28 | .PP
|
|---|
| 29 | .TP 15
|
|---|
| 30 | .B SIG_BLOCK
|
|---|
| 31 | Add the signals referenced by
|
|---|
| 32 | .I set
|
|---|
| 33 | to the mask.
|
|---|
| 34 | .TP
|
|---|
| 35 | .B SIG_UNBLOCK
|
|---|
| 36 | Remove the signals referenced by
|
|---|
| 37 | .I set
|
|---|
| 38 | from the mask.
|
|---|
| 39 | .TP
|
|---|
| 40 | .B SIG_SETMASK
|
|---|
| 41 | Set the signal mask to the set referenced by
|
|---|
| 42 | .IR set .
|
|---|
| 43 | .PP
|
|---|
| 44 | The value of
|
|---|
| 45 | .I how
|
|---|
| 46 | is ignored if
|
|---|
| 47 | .I set
|
|---|
| 48 | is
|
|---|
| 49 | .BR NULL .
|
|---|
| 50 | .SH "SEE ALSO"
|
|---|
| 51 | .BR sigaction (2),
|
|---|
| 52 | .BR sigpending (2),
|
|---|
| 53 | .BR sigsuspend (2),
|
|---|
| 54 | .BR sigset (3).
|
|---|
| 55 | .SH DIAGNOSTICS
|
|---|
| 56 | Returns
|
|---|
| 57 | .B 0
|
|---|
| 58 | on success and
|
|---|
| 59 | .B \-1
|
|---|
| 60 | on error. The error code is
|
|---|
| 61 | .B EFAULT
|
|---|
| 62 | for a bad
|
|---|
| 63 | .I set
|
|---|
| 64 | or
|
|---|
| 65 | .I oset
|
|---|
| 66 | address, or
|
|---|
| 67 | .B EINVAL
|
|---|
| 68 | for a bad
|
|---|
| 69 | .I how
|
|---|
| 70 | argument.
|
|---|
| 71 | .SH AUTHOR
|
|---|
| 72 | Kees J. Bot (kjb@cs.vu.nl)
|
|---|
| 73 |
|
|---|
| 74 | .\"
|
|---|
| 75 | .\" $PchId: sigprocmask.2,v 1.2 1996/04/11 06:02:09 philip Exp $
|
|---|
Note:
See
TracBrowser
for help on using the repository browser.
