signal: Add __libc_sigaction

The generic implementation basically handle the system agnostic logic
(filtering out the invalid signals) while the __libc_sigaction is
the function with implements the system and architecture bits.

Checked on x86_64-linux-gnu and i686-linux-gnu.

1 files changed, 0 insertions, 74 deletions

diff --git a/sysdeps/unix/sysv/linux/sigaction.c b/sysdeps/unix/sysv/linux/sigaction.c
deleted file mode 100644
index 38088f9a85..0000000000
--- a/sysdeps/unix/sysv/linux/sigaction.c
+++ /dev/null
@@ -1,74 +0,0 @@
-/* Copyright (C) 1997-2021 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, see
-   <https://www.gnu.org/licenses/>.  */
-
-#include <errno.h>
-#include <signal.h>
-#include <string.h>
-
-#include <sysdep.h>
-#include <sys/syscall.h>
-
-/* New ports should not define the obsolete SA_RESTORER, however some
-   architecture requires for compat mode and/or due old ABI.  */
-#include <kernel_sigaction.h>
-
-#ifndef SA_RESTORER
-# define SET_SA_RESTORER(kact, act)
-# define RESET_SA_RESTORER(act, kact)
-#endif
-
-/* SPARC passes the restore function as an argument to rt_sigaction.  */
-#ifndef STUB
-# define STUB(act, sigsetsize) (sigsetsize)
-#endif
-
-/* 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 result;
-
-  struct kernel_sigaction kact, koact;
-
-  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;
-      SET_SA_RESTORER (&kact, act);
-    }
-
-  /* XXX The size argument hopefully will have to be changed to the
-     real size of the user-level sigset_t.  */
-  result = INLINE_SYSCALL_CALL (rt_sigaction, sig,
-				act ? &kact : NULL,
-				oact ? &koact : NULL, STUB (act,
-							    __NSIG_BYTES));
-
-  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;
-      RESET_SA_RESTORER (oact, &koact);
-    }
-  return result;
-}
-libc_hidden_def (__libc_sigaction)
-
-#include <nptl/sigaction.c>