| 1 |
1325 |
phoenix |
/* Copyright (C) 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
|
| 2 |
|
|
This file is part of the GNU C Library.
|
| 3 |
|
|
|
| 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.
|
| 8 |
|
|
|
| 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.
|
| 13 |
|
|
|
| 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. */
|
| 18 |
|
|
|
| 19 |
|
|
#include <errno.h>
|
| 20 |
|
|
#include <signal.h>
|
| 21 |
|
|
#include <string.h>
|
| 22 |
|
|
#include <sys/syscall.h>
|
| 23 |
|
|
#include <bits/kernel_sigaction.h>
|
| 24 |
|
|
|
| 25 |
|
|
|
| 26 |
|
|
#if defined __NR_rt_sigaction
|
| 27 |
|
|
|
| 28 |
|
|
/* If ACT is not NULL, change the action for SIG to *ACT.
|
| 29 |
|
|
If OACT is not NULL, put the old action for SIG in *OACT. */
|
| 30 |
|
|
int __libc_sigaction (int sig, const struct sigaction *act, struct sigaction *oact)
|
| 31 |
|
|
{
|
| 32 |
|
|
int result;
|
| 33 |
|
|
struct kernel_sigaction kact, koact;
|
| 34 |
|
|
|
| 35 |
|
|
#ifdef SIGCANCEL
|
| 36 |
|
|
if (sig == SIGCANCEL) {
|
| 37 |
|
|
__set_errno (EINVAL);
|
| 38 |
|
|
return -1;
|
| 39 |
|
|
}
|
| 40 |
|
|
#endif
|
| 41 |
|
|
if (act) {
|
| 42 |
|
|
kact.k_sa_handler = act->sa_handler;
|
| 43 |
|
|
memcpy (&kact.sa_mask, &act->sa_mask, sizeof (kact.sa_mask));
|
| 44 |
|
|
kact.sa_flags = act->sa_flags;
|
| 45 |
|
|
# ifdef HAVE_SA_RESTORER
|
| 46 |
|
|
kact.sa_restorer = act->sa_restorer;
|
| 47 |
|
|
# endif
|
| 48 |
|
|
}
|
| 49 |
|
|
|
| 50 |
|
|
/* XXX The size argument hopefully will have to be changed to the
|
| 51 |
|
|
real size of the user-level sigset_t. */
|
| 52 |
|
|
result = __syscall_rt_sigaction(sig, act ? __ptrvalue (&kact) : NULL,
|
| 53 |
|
|
oact ? __ptrvalue (&koact) : NULL, _NSIG / 8);
|
| 54 |
|
|
|
| 55 |
|
|
if (oact && result >= 0) {
|
| 56 |
|
|
oact->sa_handler = koact.k_sa_handler;
|
| 57 |
|
|
memcpy (&oact->sa_mask, &koact.sa_mask, sizeof (oact->sa_mask));
|
| 58 |
|
|
oact->sa_flags = koact.sa_flags;
|
| 59 |
|
|
# ifdef HAVE_SA_RESTORER
|
| 60 |
|
|
oact->sa_restorer = koact.sa_restorer;
|
| 61 |
|
|
# endif
|
| 62 |
|
|
}
|
| 63 |
|
|
return result;
|
| 64 |
|
|
}
|
| 65 |
|
|
|
| 66 |
|
|
|
| 67 |
|
|
#else
|
| 68 |
|
|
|
| 69 |
|
|
/* If ACT is not NULL, change the action for SIG to *ACT.
|
| 70 |
|
|
If OACT is not NULL, put the old action for SIG in *OACT. */
|
| 71 |
|
|
int __libc_sigaction (int sig, const struct sigaction *act, struct sigaction *oact)
|
| 72 |
|
|
{
|
| 73 |
|
|
int result;
|
| 74 |
|
|
struct old_kernel_sigaction kact, koact;
|
| 75 |
|
|
|
| 76 |
|
|
#ifdef SIGCANCEL
|
| 77 |
|
|
if (sig == SIGCANCEL) {
|
| 78 |
|
|
__set_errno (EINVAL);
|
| 79 |
|
|
return -1;
|
| 80 |
|
|
}
|
| 81 |
|
|
#endif
|
| 82 |
|
|
if (act) {
|
| 83 |
|
|
kact.k_sa_handler = act->sa_handler;
|
| 84 |
|
|
kact.sa_mask = act->sa_mask.__val[0];
|
| 85 |
|
|
kact.sa_flags = act->sa_flags;
|
| 86 |
|
|
# ifdef HAVE_SA_RESTORER
|
| 87 |
|
|
kact.sa_restorer = act->sa_restorer;
|
| 88 |
|
|
# endif
|
| 89 |
|
|
}
|
| 90 |
|
|
result = __syscall_sigaction(sig, act ? __ptrvalue (&kact) : NULL,
|
| 91 |
|
|
oact ? __ptrvalue (&koact) : NULL);
|
| 92 |
|
|
|
| 93 |
|
|
if (oact && result >= 0) {
|
| 94 |
|
|
oact->sa_handler = koact.k_sa_handler;
|
| 95 |
|
|
oact->sa_mask.__val[0] = koact.sa_mask;
|
| 96 |
|
|
oact->sa_flags = koact.sa_flags;
|
| 97 |
|
|
# ifdef HAVE_SA_RESTORER
|
| 98 |
|
|
oact->sa_restorer = koact.sa_restorer;
|
| 99 |
|
|
# endif
|
| 100 |
|
|
}
|
| 101 |
|
|
return result;
|
| 102 |
|
|
}
|
| 103 |
|
|
|
| 104 |
|
|
#endif
|
| 105 |
|
|
|
| 106 |
|
|
weak_alias(__libc_sigaction, sigaction)
|
| 107 |
|
|
|
