diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/sigaction.c')
-rw-r--r-- | sysdeps/unix/sysv/linux/sigaction.c | 63 |
1 files changed, 63 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/sigaction.c b/sysdeps/unix/sysv/linux/sigaction.c new file mode 100644 index 0000000000..a7b3e07dae --- /dev/null +++ b/sysdeps/unix/sysv/linux/sigaction.c @@ -0,0 +1,63 @@ +/* Copyright (C) 1997 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. + + 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. + + 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. */ + +#include <signal.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> + +extern int __syscall_sigaction (int, const struct kernel_sigaction *, + struct kernel_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 +__sigaction (sig, act, oact) + int sig; + const struct sigaction *act; + struct sigaction *oact; +{ + struct kernel_sigaction k_sigact, k_osigact; + int error; + + if (act) + { + k_sigact.sa_handler = act->sa_handler; + k_sigact.sa_mask = act->sa_mask.__val[0]; + k_sigact.sa_flags = act->sa_flags; +#ifdef HAVE_SA_RESTORER + k_sigact.sa_restorer = act->sa_restorer; +#endif + } + error = __syscall_sigaction (sig, act ? &k_sigact : 0, + oact ? &k_osigact : 0); + if (oact && error >= 0) + { + oact->sa_handler = k_osigact.sa_handler; + oact->sa_mask.__val[0] = k_osigact.sa_mask; + oact->sa_flags = k_osigact.sa_flags; +#ifdef HAVE_SA_RESTORER + oact->sa_restorer = k_osigact.sa_restorer; +#endif + } + return error; +} + +weak_alias (__sigaction, sigaction) |