From 9d3629143e0c600e35858caf0494613a39a5d63c Mon Sep 17 00:00:00 2001 From: Jeff Johnston Date: Thu, 30 May 2002 20:51:03 +0000 Subject: 2002-05-30 Jeff Johnston * libc/sys/linux/Makefile.am: Add support for new files. * libc/sys/linux/Makefile.in: Regenerated. * libc/sys/linux/ids.c: Add __getuid weak alias for getuid. * libc/sys/linux/signal.c: Change to use real-time syscalls for sigsuspend, sigprocmask, and sigpending. Also remove sigaction as it is in a separate file now. * libc/sys/linux/machine/i386/Makefile.am * libc/sys/linux/machine/i386/Makefile.in * libc/sys/linux/sys/signal.h: Add include of . * libc/sys/linux/sigaction.c: New file. * libc/sys/linux/sigqueue.c: Ditto. * libc/sys/linux/sigwait.c: Ditto. * libc/sys/linux/machine/i386/sigaction.c: Ditto. * libc/sys/linux/kernel_sigaction.h: Ditto. --- newlib/libc/sys/linux/sigaction.c | 77 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 77 insertions(+) create mode 100644 newlib/libc/sys/linux/sigaction.c (limited to 'newlib/libc/sys/linux/sigaction.c') diff --git a/newlib/libc/sys/linux/sigaction.c b/newlib/libc/sys/linux/sigaction.c new file mode 100644 index 000000000..a70950276 --- /dev/null +++ b/newlib/libc/sys/linux/sigaction.c @@ -0,0 +1,77 @@ +/* Copyright (C) 1997, 1998, 1999, 2000 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, write to the Free + Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA + 02111-1307 USA. */ + +/* Modified 05/30/02 by Jeff Johnston, Red Hat Inc. */ + +#include +#include +#include + +#include + +/* 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 + +#define __NR___rt_sigaction __NR_rt_sigaction + +static _syscall4(int,__rt_sigaction,int,sig, + const struct kernel_sigaction *,act, + struct kernel_sigaction *,oact,size_t,size); + +/* 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 (sig, act, oact) + int sig; + const struct sigaction *act; + struct sigaction *oact; +{ + int result; + struct kernel_sigaction kact, koact; + /* Save the current error value for later. We need not do this + if we are guaranteed to have realtime signals. */ + + 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; + kact.sa_restorer = act->sa_restorer; + } + + /* XXX The size argument hopefully will have to be changed to the + real size of the user-level sigset_t. */ + result = __rt_sigaction (sig, + act ? (&kact) : NULL, + oact ? (&koact) : NULL, _NSIG / 8); + + 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; + oact->sa_restorer = koact.sa_restorer; + } + + return result; +} + +weak_alias (__libc_sigaction, __sigaction) +weak_alias (__libc_sigaction, sigaction) -- cgit v1.2.3