| 1 | /* |
| 2 | * Copyright (c) 1985 Regents of the University of California. |
| 3 | * All rights reserved. The Berkeley software License Agreement |
| 4 | * specifies the terms and conditions for redistribution. |
| 5 | */ |
| 6 | |
| 7 | #if defined(LIBC_SCCS) && !defined(lint) |
| 8 | static char sccsid[] = "@(#)siginterrupt.c 5.2 (Berkeley) %G%"; |
| 9 | #endif LIBC_SCCS and not lint |
| 10 | |
| 11 | #include <signal.h> |
| 12 | |
| 13 | /* |
| 14 | * Set signal state to prevent restart of system calls |
| 15 | * after an instance of the indicated signal. |
| 16 | */ |
| 17 | siginterrupt(sig, flag) |
| 18 | int sig, flag; |
| 19 | { |
| 20 | struct sigvec sv; |
| 21 | int ret; |
| 22 | |
| 23 | if ((ret = sigvec(sig, 0, &sv)) < 0) |
| 24 | return (ret); |
| 25 | if (flag) |
| 26 | sv.sv_flags |= SV_INTERRUPT; |
| 27 | else |
| 28 | sv.sv_flags &= ~SV_INTERRUPT; |
| 29 | return (sigvec(sig, &sv, 0)); |
| 30 | } |