root / prex-0.9.0 / usr / lib / posix / signal / sigcompat.c @ 03e9c04a
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| 1 | 03e9c04a | Brad Neuman | /*
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| 2 | * Copyright (c) 1989, 1993
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| 3 | * The Regents of the University of California. All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without
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| 6 | * modification, are permitted provided that the following conditions
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| 7 | * are met:
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| 8 | * 1. Redistributions of source code must retain the above copyright
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| 9 | * notice, this list of conditions and the following disclaimer.
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| 10 | * 2. Redistributions in binary form must reproduce the above copyright
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| 11 | * notice, this list of conditions and the following disclaimer in the
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| 12 | * documentation and/or other materials provided with the distribution.
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| 13 | * 3. Neither the name of the University nor the names of its contributors
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| 14 | * may be used to endorse or promote products derived from this software
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| 15 | * without specific prior written permission.
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| 16 | *
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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| 18 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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| 19 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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| 20 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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| 21 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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| 22 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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| 23 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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| 24 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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| 25 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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| 26 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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| 27 | * SUCH DAMAGE.
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| 28 | */
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| 29 | |||
| 30 | #include <sys/param.h> |
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| 31 | #include <signal.h> |
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| 32 | |||
| 33 | int
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| 34 | sigvec(signo, sv, osv) |
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| 35 | int signo;
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| 36 | struct sigvec *sv, *osv;
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| 37 | {
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| 38 | int ret;
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| 39 | |||
| 40 | if (sv)
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| 41 | sv->sv_flags ^= SV_INTERRUPT; /* !SA_INTERRUPT */
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| 42 | ret = sigaction(signo, (struct sigaction *)sv, (struct sigaction *)osv); |
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| 43 | if (ret == 0 && osv) |
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| 44 | osv->sv_flags ^= SV_INTERRUPT; /* !SA_INTERRUPT */
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| 45 | return (ret);
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| 46 | } |
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| 47 | |||
| 48 | int
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| 49 | sigsetmask(mask) |
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| 50 | int mask;
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| 51 | {
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| 52 | int omask, n;
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| 53 | |||
| 54 | n = sigprocmask(SIG_SETMASK, (sigset_t *) &mask, (sigset_t *) &omask); |
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| 55 | if (n)
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| 56 | return (n);
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| 57 | return (omask);
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| 58 | } |
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| 59 | |||
| 60 | int
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| 61 | sigblock(mask) |
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| 62 | int mask;
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| 63 | {
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| 64 | int omask, n;
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| 65 | |||
| 66 | n = sigprocmask(SIG_BLOCK, (sigset_t *) &mask, (sigset_t *) &omask); |
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| 67 | if (n)
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| 68 | return (n);
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| 69 | return (omask);
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| 70 | } |
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| 71 | |||
| 72 | int
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| 73 | sigpause(mask) |
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| 74 | int mask;
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| 75 | {
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| 76 | return (sigsuspend((sigset_t *)&mask));
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| 77 | } |