| | 1 | .\" Copyright (c) 1983, 1991, 1993 |
| | 2 | .\" The Regents of the University of California. All rights reserved. |
| | 3 | .\" |
| | 4 | .\" Redistribution and use in source and binary forms, with or without |
| | 5 | .\" modification, are permitted provided that the following conditions |
| | 6 | .\" are met: |
| | 7 | .\" 1. Redistributions of source code must retain the above copyright |
| | 8 | .\" notice, this list of conditions and the following disclaimer. |
| | 9 | .\" 2. Redistributions in binary form must reproduce the above copyright |
| | 10 | .\" notice, this list of conditions and the following disclaimer in the |
| | 11 | .\" documentation and/or other materials provided with the distribution. |
| | 12 | .\" 3. All advertising materials mentioning features or use of this software |
| | 13 | .\" must display the following acknowledgement: |
| | 14 | .\" This product includes software developed by the University of |
| | 15 | .\" California, Berkeley and its contributors. |
| | 16 | .\" 4. Neither the name of the University nor the names of its contributors |
| | 17 | .\" may be used to endorse or promote products derived from this software |
| | 18 | .\" without specific prior written permission. |
| | 19 | .\" |
| | 20 | .\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| | 21 | .\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| | 22 | .\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| | 23 | .\" ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| | 24 | .\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| | 25 | .\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| | 26 | .\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| | 27 | .\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| | 28 | .\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| | 29 | .\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| | 30 | .\" SUCH DAMAGE. |
| | 31 | .\" |
| | 32 | .\" @(#)sigblock.2 8.1 (Berkeley) 6/2/93 |
| | 33 | .\" $FreeBSD: src/lib/libc/compat-43/sigblock.2,v 1.5.2.2 2001/12/21 10:07:08 ru Exp $ |
| | 34 | .\" |
| | 35 | .Dd June 2, 1993 |
| | 36 | .Dt SIGBLOCK 2 |
| | 37 | .Os |
| | 38 | .Sh NAME |
| | 39 | .Nm sigblock |
| | 40 | .Nd block signals |
| | 41 | .Sh LIBRARY |
| | 42 | .Lb libc |
| | 43 | .Sh SYNOPSIS |
| | 44 | .In signal.h |
| | 45 | .Ft int |
| | 46 | .Fn sigblock "int mask" |
| | 47 | .Ft int |
| | 48 | .Fn sigmask signum |
| | 49 | .Sh DESCRIPTION |
| | 50 | .Bf -symbolic |
| | 51 | This interface is made obsolete by |
| | 52 | .Xr sigprocmask 2 . |
| | 53 | .Ef |
| | 54 | .Pp |
| | 55 | .Fn Sigblock |
| | 56 | adds the signals specified in |
| | 57 | .Fa mask |
| | 58 | to the set of signals currently |
| | 59 | being blocked from delivery. |
| | 60 | Signals are blocked if the |
| | 61 | corresponding bit in |
| | 62 | .Fa mask |
| | 63 | is a 1; the macro |
| | 64 | .Fn sigmask |
| | 65 | is provided to construct the mask for a given |
| | 66 | .Fa signum . |
| | 67 | .Pp |
| | 68 | It is not possible to block |
| | 69 | .Dv SIGKILL |
| | 70 | or |
| | 71 | .Dv SIGSTOP ; |
| | 72 | this restriction is silently |
| | 73 | imposed by the system. |
| | 74 | .Sh RETURN VALUES |
| | 75 | The previous set of masked signals is returned. |
| | 76 | .Sh SEE ALSO |
| | 77 | .Xr kill 2 , |
| | 78 | .Xr sigaction 2 , |
| | 79 | .Xr sigprocmask 2 , |
| | 80 | .Xr sigsetmask 2 , |
| | 81 | .Xr sigsetops 3 |
| | 82 | .Sh HISTORY |
| | 83 | The |
| | 84 | .Fn sigblock |
| | 85 | function call appeared in |
| | 86 | .Bx 4.2 |
| | 87 | and has been deprecated. |
projects / apple / libc.git / blame_incremental