diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/i386/sigaction.c')
| -rw-r--r-- | sysdeps/unix/sysv/linux/i386/sigaction.c | 57 |
1 files changed, 37 insertions, 20 deletions
diff --git a/sysdeps/unix/sysv/linux/i386/sigaction.c b/sysdeps/unix/sysv/linux/i386/sigaction.c index f3ecd4bd15..3f9d9463a0 100644 --- a/sysdeps/unix/sysv/linux/i386/sigaction.c +++ b/sysdeps/unix/sysv/linux/i386/sigaction.c @@ -1,42 +1,49 @@ /* POSIX.1 `sigaction' call for Linux/i386. -Copyright (C) 1991, 1995, 1996 Free Software Foundation, Inc. -This file is part of the GNU C Library. + Copyright (C) 1991, 1995, 1996, 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 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. + 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., 675 Mass Ave, -Cambridge, MA 02139, USA. */ + 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 <sysdep.h> #include <errno.h> #include <stddef.h> #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> + /* 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 (int sig, const struct sigaction *act, struct sigaction *oact) { - struct sigaction newact; + struct kernel_sigaction k_newact, k_oldact; int result; if (act) { - newact = *act; - newact.sa_restorer = ((act->sa_flags & SA_NOMASK) - ? &&restore_nomask : &&restore); - act = &newact; + k_newact.sa_handler = act->sa_handler; + k_newact.sa_mask = act->sa_mask.__val[0]; + k_newact.sa_flags = act->sa_flags; + + k_newact.sa_restorer = ((act->sa_flags & SA_NOMASK) + ? &&restore_nomask : &&restore); } asm volatile ("pushl %%ebx\n" @@ -44,13 +51,23 @@ __sigaction (int sig, const struct sigaction *act, struct sigaction *oact) "int $0x80\n" "popl %%ebx" : "=a" (result) - : "0" (SYS_ify (sigaction)), "r" (sig), "c" (act), "d" (oact)); + : "0" (SYS_ify (sigaction)), "r" (sig), + "c" (act ? &k_newact : 0), "d" (oact ? &k_oldact : 0)); if (result < 0) { __set_errno (-result); return -1; } + + if (oact) + { + oact->sa_handler = k_oldact.sa_handler; + oact->sa_mask.__val[0] = k_oldact.sa_mask; + oact->sa_flags = k_oldact.sa_flags; + oact->sa_restorer = k_oldact.sa_restorer; + } + return 0; restore: |