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Diffstat (limited to 'newlib/libc/sys/linux/sigaction.c')
-rw-r--r--newlib/libc/sys/linux/sigaction.c77
1 files changed, 77 insertions, 0 deletions
diff --git a/newlib/libc/sys/linux/sigaction.c b/newlib/libc/sys/linux/sigaction.c
new file mode 100644
index 000000000..a70950276
--- /dev/null
+++ b/newlib/libc/sys/linux/sigaction.c
@@ -0,0 +1,77 @@
+/* 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)