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+/* 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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+
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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 Library General Public License as
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+ published by the Free Software Foundation; either version 2 of the
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+ License, or (at your option) any later version.
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+
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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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+ Library General Public License for more details.
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+
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+ You should have received a copy of the GNU Library General Public
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+ License along with the GNU C Library; see the file COPYING.LIB. If not,
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+ write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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+ Boston, MA 02111-1307, USA.
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+
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+ Totally hacked up for uClibc by Erik Andersen <andersen@codepoet.org>
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+ */
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+
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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 <sys/syscall.h>
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+#include <bits/kernel_sigaction.h>
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+
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+#define SA_RESTORER 0x04000000
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+extern void __default_sa_restorer(void);
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+extern void __default_rt_sa_restorer(void);
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+
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+#if defined __NR_rt_sigaction
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+
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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 __libc_sigaction (int sig, const struct sigaction *act, 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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+
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+ if (act) {
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+ kact.k_sa_handler = act->sa_handler;
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+ memcpy (&kact.sa_mask, &act->sa_mask, sizeof (kact.sa_mask));
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+ kact.sa_flags = act->sa_flags;
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+# ifdef HAVE_SA_RESTORER
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+ if (kact.sa_flags & (SA_RESTORER | SA_ONSTACK)) {
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+ kact.sa_restorer = act->sa_restorer;
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+ } else {
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+ if (kact.sa_flags & SA_SIGINFO) {
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+ kact.sa_restorer = __default_rt_sa_restorer;
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+ } else {
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+ kact.sa_restorer = __default_sa_restorer;
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+ kact.sa_flags |= SA_RESTORER;
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+ }
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+ }
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+# endif
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+ }
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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, act ? __ptrvalue (&kact) : NULL,
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+ oact ? __ptrvalue (&koact) : NULL, _NSIG / 8);
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+
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+ if (oact && result >= 0) {
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+ oact->sa_handler = koact.k_sa_handler;
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+ memcpy (&oact->sa_mask, &koact.sa_mask, sizeof (oact->sa_mask));
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+ oact->sa_flags = koact.sa_flags;
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+# ifdef HAVE_SA_RESTORER
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+ oact->sa_restorer = koact.sa_restorer;
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+# endif
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+ }
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+ return result;
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+}
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+
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+
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+#else
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+
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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 __libc_sigaction (int sig, const struct sigaction *act, struct sigaction *oact)
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+{
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+ int result;
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+ struct old_kernel_sigaction kact, koact;
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+
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+ if (act) {
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+ kact.k_sa_handler = act->sa_handler;
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+ kact.sa_mask = act->sa_mask.__val[0];
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+ kact.sa_flags = act->sa_flags;
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+# ifdef HAVE_SA_RESTORER
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+ /* See the comments above for why we test SA_ONSTACK. */
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+ if (kact.sa_flags & (SA_RESTORER | SA_ONSTACK)) {
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+ kact.sa_restorer = act->sa_restorer;
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+ } else {
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+ kact.sa_restorer = __default_sa_restorer;
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+ kact.sa_flags |= SA_RESTORER;
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+ }
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+# endif
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+ }
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+ result = __sigaction(sig, act ? __ptrvalue (&kact) : NULL,
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+ oact ? __ptrvalue (&koact) : NULL);
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+
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+ if (oact && result >= 0) {
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+ oact->sa_handler = koact.k_sa_handler;
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+ oact->sa_mask.__val[0] = koact.sa_mask;
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+ oact->sa_flags = koact.sa_flags;
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+# ifdef HAVE_SA_RESTORER
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+ oact->sa_restorer = koact.sa_restorer;
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+# endif
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+ }
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+ return result;
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+}
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+
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+#endif
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+
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+weak_alias(__libc_sigaction, sigaction)
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+
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