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b8f253e8 | 1 | /* |
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2 | * Copyright (c) 1988 Regents of the University of California. |
3 | * All rights reserved. | |
4 | * | |
5 | * Redistribution and use in source and binary forms are permitted | |
6 | * provided that the above copyright notice and this paragraph are | |
7 | * duplicated in all such forms and that any documentation, | |
8 | * advertising materials, and other materials related to such | |
9 | * distribution and use acknowledge that the software was developed | |
10 | * by the University of California, Berkeley. The name of the | |
11 | * University may not be used to endorse or promote products derived | |
12 | * from this software without specific prior written permission. | |
13 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR | |
14 | * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED | |
15 | * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE. | |
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16 | */ |
17 | ||
2ce81398 | 18 | #if defined(LIBC_SCCS) && !defined(lint) |
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19 | static char sccsid[] = "@(#)siginterrupt.c 5.3 (Berkeley) %G%"; |
20 | #endif /* LIBC_SCCS and not lint */ | |
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21 | |
22 | #include <signal.h> | |
23 | ||
24 | /* | |
25 | * Set signal state to prevent restart of system calls | |
26 | * after an instance of the indicated signal. | |
27 | */ | |
28 | siginterrupt(sig, flag) | |
29 | int sig, flag; | |
30 | { | |
31 | struct sigvec sv; | |
32 | int ret; | |
33 | ||
84cb68a1 | 34 | if ((ret = sigvec(sig, (struct sigvec *)0, &sv)) < 0) |
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35 | return (ret); |
36 | if (flag) | |
37 | sv.sv_flags |= SV_INTERRUPT; | |
38 | else | |
39 | sv.sv_flags &= ~SV_INTERRUPT; | |
84cb68a1 | 40 | return (sigvec(sig, &sv, (struct sigvec *)0)); |
6fa13af1 | 41 | } |