78 lines
2.5 KiB
C
78 lines
2.5 KiB
C
/* Copyright (C) 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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/* Modified 05/30/02 by Jeff Johnston, Red Hat Inc. */
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#include <errno.h>
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#include <signal.h>
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#include <string.h>
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#include <machine/syscall.h>
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/* The difference here is that the sigaction structure used in the
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kernel is not the same as we use in the libc. Therefore we must
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translate it here. */
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#include <kernel_sigaction.h>
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#define __NR___rt_sigaction __NR_rt_sigaction
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static _syscall4(int,__rt_sigaction,int,sig,
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const struct kernel_sigaction *,act,
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struct kernel_sigaction *,oact,size_t,size);
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/* If ACT is not NULL, change the action for SIG to *ACT.
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If OACT is not NULL, put the old action for SIG in *OACT. */
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int
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__libc_sigaction (sig, act, oact)
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int sig;
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const struct sigaction *act;
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struct sigaction *oact;
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{
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int result;
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struct kernel_sigaction kact, koact;
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/* Save the current error value for later. We need not do this
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if we are guaranteed to have realtime signals. */
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if (act)
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{
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kact.k_sa_handler = act->sa_handler;
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memcpy (&kact.sa_mask, &act->sa_mask, sizeof (sigset_t));
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kact.sa_flags = act->sa_flags;
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kact.sa_restorer = act->sa_restorer;
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}
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/* XXX The size argument hopefully will have to be changed to the
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real size of the user-level sigset_t. */
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result = __rt_sigaction (sig,
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act ? (&kact) : NULL,
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oact ? (&koact) : NULL, NSIG / 8);
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if (oact && result >= 0)
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{
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oact->sa_handler = koact.k_sa_handler;
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memcpy (&oact->sa_mask, &koact.sa_mask, sizeof (sigset_t));
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oact->sa_flags = koact.sa_flags;
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oact->sa_restorer = koact.sa_restorer;
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}
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return result;
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}
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weak_alias (__libc_sigaction, __sigaction)
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weak_alias (__libc_sigaction, sigaction)
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