projects / unix-history / blame
| Commit | Line | Data |
|---|---|---|
| 931b8415 | 1 | .\" Copyright (c) 1983, 1991 The Regents of the University of California. |
| 88b3ccf2 | 2 | .\" All rights reserved. |
| d35f9a62 | 3 | .\" |
| 91cff1e1 | 4 | .\" %sccs.include.redist.man% |
| 88b3ccf2 | 5 | .\" |
| 931b8415 | 6 | .\" @(#)sigblock.2 6.7 (Berkeley) %G% |
| d35f9a62 | 7 | .\" |
| 931b8415 CL |
8 | .Dd |
| 9 | .Dt SIGBLOCK 2 | |
| 10 | .Os BSD 4.2 | |
| 11 | .Sh NAME | |
| 12 | .Nm sigblock | |
| 13 | .Nd block signals | |
| 14 | .Sh SYNOPSIS | |
| 15 | .Fd #include <sys/signal.h> | |
| 16 | .Ft int | |
| 17 | .Fn sigblock "int mask" | |
| 18 | .Ft int | |
| 19 | .Fn sigmask signum | |
| 20 | .Sh DESCRIPTION | |
| 21 | .Bf -symbolic | |
| 22 | This interface is made obsolete by: | |
| 23 | .Ef | |
| 24 | .Xr sigprocmask 2 . | |
| 25 | .Pp | |
| 26 | .Fn Sigblock | |
| 27 | adds the signals specified in | |
| 28 | .Fa mask | |
| 29 | to the set of signals currently | |
| fa6ed5be MK |
30 | being blocked from delivery. |
| 31 | Signals are blocked if the | |
| 18d4134b | 32 | corresponding bit in |
| 931b8415 | 33 | .Fa mask |
| fa6ed5be | 34 | is a 1; the macro |
| 931b8415 | 35 | .Fn sigmask |
| fa6ed5be | 36 | is provided to construct the mask for a given |
| 931b8415 CL |
37 | .Fa signum . |
| 38 | .Pp | |
| 39 | It is not possible to block | |
| 40 | .Dv SIGKILL | |
| 41 | or | |
| 42 | .Dv SIGSTOP ; | |
| 43 | this restriction is silently | |
| d35f9a62 | 44 | imposed by the system. |
| 931b8415 | 45 | .Sh RETURN VALUES |
| d35f9a62 | 46 | The previous set of masked signals is returned. |
| 931b8415 CL |
47 | .Sh SEE ALSO |
| 48 | .Xr kill 2 , | |
| 49 | .Xr sigprocmask 2 , | |
| 50 | .Xr sigaction 2 , | |
| 51 | .Xr sigsetmask 2 , | |
| 52 | .Xr sigsetops 3 | |
| 53 | .Sh HISTORY | |
| 54 | The | |
| 55 | .Nm | |
| 56 | function call appeared in | |
| 57 | .Bx 4.2 | |
| 58 | and has been deprecated. |