1 /* Copyright (C) 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Library General Public License as
6 published by the Free Software Foundation; either version 2 of the
7 License, or (at your option) any later version.
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Library General Public License for more details.
14 You should have received a copy of the GNU Library General Public
15 License along with the GNU C Library; see the file COPYING.LIB. If not,
16 write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
17 Boston, MA 02111-1307, USA.
19 Totally hacked up for uClibc by Erik Andersen <andersen@codepoet.org>
25 #include <sys/syscall.h>
26 #include <bits/kernel_sigaction.h>
28 #define SA_RESTORER 0x04000000
31 #if defined __NR_rt_sigaction
33 /* If ACT is not NULL, change the action for SIG to *ACT.
34 If OACT is not NULL, put the old action for SIG in *OACT. */
35 int __libc_sigaction (int sig, const struct sigaction *act, struct sigaction *oact)
38 struct kernel_sigaction kact, koact;
41 if (sig == SIGCANCEL) {
48 kact.k_sa_handler = act->sa_handler;
49 __memcpy (&kact.sa_mask, &act->sa_mask, sizeof (kact.sa_mask));
50 kact.sa_flags = act->sa_flags;
52 kact.sa_flags = act->sa_flags | SA_RESTORER;
53 #ifdef HAVE_SA_RESTORER
54 kact.sa_restorer = act->sa_restorer;
58 /* XXX The size argument hopefully will have to be changed to the
59 real size of the user-level sigset_t. */
60 result = __syscall_rt_sigaction(sig, act ? __ptrvalue (&kact) : NULL,
61 oact ? __ptrvalue (&koact) : NULL, _NSIG / 8);
63 if (oact && result >= 0) {
64 oact->sa_handler = koact.k_sa_handler;
65 __memcpy (&oact->sa_mask, &koact.sa_mask, sizeof (oact->sa_mask));
66 oact->sa_flags = koact.sa_flags;
67 #ifdef HAVE_SA_RESTORER
68 oact->sa_restorer = koact.sa_restorer;
76 extern void restore (void) asm ("__restore") attribute_hidden;
78 /* If ACT is not NULL, change the action for SIG to *ACT.
79 If OACT is not NULL, put the old action for SIG in *OACT. */
80 int __libc_sigaction (int sig, const struct sigaction *act, struct sigaction *oact)
83 struct old_kernel_sigaction kact, koact;
86 if (sig == SIGCANCEL) {
93 kact.k_sa_handler = act->sa_handler;
94 kact.sa_mask = act->sa_mask.__val[0];
95 kact.sa_flags = act->sa_flags | SA_RESTORER;
96 #ifdef HAVE_SA_RESTORER
97 kact.sa_restorer = act->sa_restorer;
101 result = __syscall_sigaction(sig, act ? __ptrvalue (&kact) : NULL,
102 oact ? __ptrvalue (&koact) : NULL);
105 __set_errno(-result);
110 oact->sa_handler = koact.k_sa_handler;
111 oact->sa_mask.__val[0] = koact.sa_mask;
112 oact->sa_flags = koact.sa_flags;
113 #ifdef HAVE_SA_RESTORER
114 oact->sa_restorer = koact.sa_restorer;
121 weak_alias (__libc_sigaction, sigaction)