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[/] [openrisc/] [trunk/] [gnu-src/] [newlib-1.18.0/] [newlib/] [libc/] [sys/] [linux/] [sigaction.c] - Rev 258
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/* Copyright (C) 1997, 1998, 1999, 2000 Free Software Foundation, Inc. This file is part of the GNU C Library. The GNU C Library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. The GNU C Library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with the GNU C Library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. */ /* Modified 05/30/02 by Jeff Johnston, Red Hat Inc. */ #include <errno.h> #include <signal.h> #include <string.h> #include <machine/syscall.h> /* The difference here is that the sigaction structure used in the kernel is not the same as we use in the libc. Therefore we must translate it here. */ #include <kernel_sigaction.h> #define __NR___rt_sigaction __NR_rt_sigaction static _syscall4(int,__rt_sigaction,int,sig, const struct kernel_sigaction *,act, struct kernel_sigaction *,oact,size_t,size); /* If ACT is not NULL, change the action for SIG to *ACT. If OACT is not NULL, put the old action for SIG in *OACT. */ int __libc_sigaction (sig, act, oact) int sig; const struct sigaction *act; struct sigaction *oact; { int result; struct kernel_sigaction kact, koact; /* Save the current error value for later. We need not do this if we are guaranteed to have realtime signals. */ if (act) { kact.k_sa_handler = act->sa_handler; memcpy (&kact.sa_mask, &act->sa_mask, sizeof (sigset_t)); kact.sa_flags = act->sa_flags; kact.sa_restorer = act->sa_restorer; } /* XXX The size argument hopefully will have to be changed to the real size of the user-level sigset_t. */ result = __rt_sigaction (sig, act ? (&kact) : NULL, oact ? (&koact) : NULL, NSIG / 8); if (oact && result >= 0) { oact->sa_handler = koact.k_sa_handler; memcpy (&oact->sa_mask, &koact.sa_mask, sizeof (sigset_t)); oact->sa_flags = koact.sa_flags; oact->sa_restorer = koact.sa_restorer; } return result; } weak_alias (__libc_sigaction, __sigaction) weak_alias (__libc_sigaction, sigaction)
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