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-rw-r--r--libc/signal/sigaction.c141
1 files changed, 74 insertions, 67 deletions
diff --git a/libc/signal/sigaction.c b/libc/signal/sigaction.c
index eb6b43a49..0ead76ef6 100644
--- a/libc/signal/sigaction.c
+++ b/libc/signal/sigaction.c
@@ -1,107 +1,114 @@
-/* Copyright (C) 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
+/* Copyright (C) 1997,1998,1999,2000,2002,2003 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 Library General Public License as
- published by the Free Software Foundation; either version 2 of the
- License, or (at your option) any later version.
+ 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
- Library General Public License for more details.
+ Lesser General Public License for more details.
- You should have received a copy of the GNU Library General Public
- License along with the GNU C Library; see the file COPYING.LIB. If not,
- write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ 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. */
#include <errno.h>
#include <signal.h>
#include <string.h>
+
#include <sys/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 <bits/kernel_sigaction.h>
+int __libc_sigaction (int sig, const struct sigaction *act, struct sigaction *oact);
#if defined __NR_rt_sigaction
/* 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 (int sig, const struct sigaction *act, struct sigaction *oact)
+int
+__libc_sigaction (sig, act, oact)
+ int sig;
+ const struct sigaction *act;
+ struct sigaction *oact;
{
- int result;
- struct kernel_sigaction kact, koact;
-
-#ifdef SIGCANCEL
- if (sig == SIGCANCEL) {
- __set_errno (EINVAL);
- return -1;
- }
-#endif
- if (act) {
- kact.k_sa_handler = act->sa_handler;
- memcpy (&kact.sa_mask, &act->sa_mask, sizeof (kact.sa_mask));
- kact.sa_flags = act->sa_flags;
+ int result;
+ struct kernel_sigaction kact, koact;
+
+ if (act) {
+ kact.k_sa_handler = act->sa_handler;
+ memcpy (&kact.sa_mask, &act->sa_mask, sizeof (kact.sa_mask));
+ kact.sa_flags = act->sa_flags;
# ifdef HAVE_SA_RESTORER
- kact.sa_restorer = act->sa_restorer;
+ kact.sa_restorer = act->sa_restorer;
# endif
- }
-
- /* XXX The size argument hopefully will have to be changed to the
- real size of the user-level sigset_t. */
- result = __syscall_rt_sigaction(sig, act ? __ptrvalue (&kact) : NULL,
- oact ? __ptrvalue (&koact) : NULL, _NSIG / 8);
-
- if (oact && result >= 0) {
- oact->sa_handler = koact.k_sa_handler;
- memcpy (&oact->sa_mask, &koact.sa_mask, sizeof (oact->sa_mask));
- oact->sa_flags = koact.sa_flags;
+ }
+
+ /* XXX The size argument hopefully will have to be changed to the
+ real size of the user-level sigset_t. */
+ result = __syscall_rt_sigaction(sig,
+ act ? __ptrvalue (&kact) : NULL,
+ oact ? __ptrvalue (&koact) : NULL, _NSIG / 8);
+
+ if (oact && result >= 0) {
+ oact->sa_handler = koact.k_sa_handler;
+ memcpy (&oact->sa_mask, &koact.sa_mask, sizeof (oact->sa_mask));
+ oact->sa_flags = koact.sa_flags;
# ifdef HAVE_SA_RESTORER
- oact->sa_restorer = koact.sa_restorer;
+ oact->sa_restorer = koact.sa_restorer;
# endif
- }
- return result;
-}
+ }
+ return result;
+}
#else
/* 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 (int sig, const struct sigaction *act, struct sigaction *oact)
+int
+__libc_sigaction (sig, act, oact)
+ int sig;
+ const struct sigaction *act;
+ struct sigaction *oact;
{
- int result;
- struct old_kernel_sigaction kact, koact;
-
-#ifdef SIGCANCEL
- if (sig == SIGCANCEL) {
- __set_errno (EINVAL);
- return -1;
- }
-#endif
- if (act) {
- kact.k_sa_handler = act->sa_handler;
- kact.sa_mask = act->sa_mask.__val[0];
- kact.sa_flags = act->sa_flags;
+ int result;
+ struct old_kernel_sigaction kact, koact;
+
+ if (act) {
+ kact.k_sa_handler = act->sa_handler;
+ kact.sa_mask = act->sa_mask.__val[0];
+ kact.sa_flags = act->sa_flags;
# ifdef HAVE_SA_RESTORER
- kact.sa_restorer = act->sa_restorer;
+ kact.sa_restorer = act->sa_restorer;
# endif
- }
- result = __syscall_sigaction(sig, act ? __ptrvalue (&kact) : NULL,
- oact ? __ptrvalue (&koact) : NULL);
-
- if (oact && result >= 0) {
- oact->sa_handler = koact.k_sa_handler;
- oact->sa_mask.__val[0] = koact.sa_mask;
- oact->sa_flags = koact.sa_flags;
+ }
+
+ result = __syscall_sigaction(sig,
+ act ? __ptrvalue (&kact) : NULL,
+ oact ? __ptrvalue (&koact) : NULL);
+
+ if (oact && result >= 0) {
+ oact->sa_handler = koact.k_sa_handler;
+ oact->sa_mask.__val[0] = koact.sa_mask;
+ oact->sa_flags = koact.sa_flags;
# ifdef HAVE_SA_RESTORER
- oact->sa_restorer = koact.sa_restorer;
+ oact->sa_restorer = koact.sa_restorer;
# endif
- }
- return result;
+ }
+
+ return result;
}
#endif
-weak_alias(__libc_sigaction, sigaction)
-
+weak_alias (__libc_sigaction, __sigaction)
+weak_alias (__libc_sigaction, sigaction)