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* sysdeps/alpha/fpu/s_cacoshf.c: Likewise. * sysdeps/alpha/fpu/s_casinf.c: Likewise. * sysdeps/alpha/fpu/s_casinhf.c: Likewise. * sysdeps/alpha/fpu/s_catanf.c: Likewise. * sysdeps/alpha/fpu/s_catanhf.c: Likewise. * sysdeps/alpha/fpu/s_ccosf.c: Likewise. * sysdeps/alpha/fpu/s_ccoshf.c: Likewise. * sysdeps/alpha/fpu/s_cexpf.c: Likewise. * sysdeps/alpha/fpu/s_clog10f.c: Likewise. * sysdeps/alpha/fpu/s_clogf.c: Likewise. * sysdeps/alpha/fpu/s_cpowf.c: Likewise. * sysdeps/alpha/fpu/s_cprojf.c: Likewise. * sysdeps/alpha/fpu/s_csinf.c: Likewise. * sysdeps/alpha/fpu/s_csinhf.c: Likewise. * sysdeps/alpha/fpu/s_csqrtf.c: Likewise. * sysdeps/alpha/fpu/s_ctanf.c: Likewise. * sysdeps/alpha/fpu/s_ctanhf.c: Likewise. * sysdeps/alpha/libc-tls.c: Likewise. * sysdeps/gnu/glob64.c: Likewise. * sysdeps/gnu/updwtmp.c: Likewise. * sysdeps/gnu/utmp_file.c: Likewise. * sysdeps/i386/bzero.c: Likewise. * sysdeps/i386/ffs.c: Likewise. * sysdeps/i386/i686/ffs.c: Likewise. * sysdeps/i386/memset.c: Likewise. * sysdeps/ia64/fpu/printf_fphex.c: Likewise. * sysdeps/ia64/libc-tls.c: Likewise. * sysdeps/ieee754/ldbl-128/printf_fphex.c: Likewise. * sysdeps/m68k/ffs.c: Likewise. * sysdeps/mach/hurd/getdents.c: Likewise. * sysdeps/mach/hurd/init-posix.c: Likewise. * sysdeps/mach/msync.c: Likewise. * sysdeps/mips/libc-tls.c: Likewise. * sysdeps/posix/profil.c: Likewise. * sysdeps/posix/shm_open.c: Likewise. * sysdeps/posix/shm_unlink.c: Likewise. * sysdeps/posix/sprofil.c: Likewise. * sysdeps/powerpc/ffs.c: Likewise. * sysdeps/rs6000/ffs.c: Likewise. * sysdeps/s390/libc-tls.c: Likewise. * sysdeps/unix/sysv/linux/aio_sigqueue.c: Likewise. * sysdeps/unix/sysv/linux/alpha/glob.c: Likewise. * sysdeps/unix/sysv/linux/alpha/wordexp.c: Likewise. * sysdeps/unix/sysv/linux/ftruncate64.c: Likewise. * sysdeps/unix/sysv/linux/gai_sigqueue.c: Likewise. * sysdeps/unix/sysv/linux/i386/getmsg.c: Likewise. * sysdeps/unix/sysv/linux/i386/getresgid.c: Likewise. * sysdeps/unix/sysv/linux/i386/getresuid.c: Likewise. * sysdeps/unix/sysv/linux/i386/lchown.c: Likewise. * sysdeps/unix/sysv/linux/i386/putmsg.c: Likewise. * sysdeps/unix/sysv/linux/i386/readelflib.c: Likewise. * sysdeps/unix/sysv/linux/i386/setresgid.c: Likewise. * sysdeps/unix/sysv/linux/i386/setresuid.c: Likewise. * sysdeps/unix/sysv/linux/ia64/readelflib.c: Likewise. * sysdeps/unix/sysv/linux/mips/ftruncate64.c: Likewise. * sysdeps/unix/sysv/linux/mips/readelflib.c: Likewise. * sysdeps/unix/sysv/linux/mips/truncate64.c: Likewise. * sysdeps/unix/sysv/linux/mq_close.c: Likewise. * sysdeps/unix/sysv/linux/mq_getattr.c: Likewise. * sysdeps/unix/sysv/linux/mq_notify.c: Likewise. * sysdeps/unix/sysv/linux/mq_open.c: Likewise. * sysdeps/unix/sysv/linux/mq_receive.c: Likewise. * sysdeps/unix/sysv/linux/mq_send.c: Likewise. * sysdeps/unix/sysv/linux/mq_unlink.c: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/ftruncate64.c: Likewise. * sysdeps/unix/sysv/linux/powerpc/powerpc32/truncate64.c: Likewise. * sysdeps/unix/sysv/linux/powerpc/readelflib.c: Likewise. * sysdeps/unix/sysv/linux/s390/readelflib.c: Likewise. * sysdeps/unix/sysv/linux/sched_getaffinity.c: Likewise. * sysdeps/unix/sysv/linux/sched_setaffinity.c: Likewise. * sysdeps/unix/sysv/linux/sigqueue.c: Likewise. * sysdeps/unix/sysv/linux/sigstack.c: Likewise. * sysdeps/unix/sysv/linux/sigtimedwait.c: Likewise. * sysdeps/unix/sysv/linux/sigwaitinfo.c: Likewise. * sysdeps/unix/sysv/linux/sparc/readelflib.c: Likewise. * sysdeps/unix/sysv/linux/truncate64.c: Likewise. * sysdeps/unix/sysv/linux/vfork.c: Likewise. * sysdeps/unix/sysv/linux/x86_64/readelflib.c: Likewise.
70 lines
2.1 KiB
C
70 lines
2.1 KiB
C
/* Emulate sigstack function using sigaltstack.
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Copyright (C) 1998, 2000, 2005 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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#include <signal.h>
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#include <stddef.h>
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#include <sys/syscall.h>
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#ifdef __NR_sigaltstack
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int
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sigstack (ss, oss)
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struct sigstack *ss;
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struct sigstack *oss;
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{
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stack_t sas;
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stack_t *sasp = NULL;
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stack_t osas;
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stack_t *osasp = oss == NULL ? NULL : &osas;
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int result;
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if (ss != NULL)
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{
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/* We have to convert the information. */
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sas.ss_sp = ss->ss_sp;
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sas.ss_flags = ss->ss_onstack ? SS_ONSTACK : 0;
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/* For the size of the stack we have no value we can pass to the
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kernel. This is why this function should not be used. We simply
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assume that all the memory down to address zero (in case the stack
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grows down) is available. */
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sas.ss_size = ss->ss_sp - NULL;
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sasp = &sas;
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}
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/* Call the kernel. */
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result = __sigaltstack (sasp, osasp);
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/* Convert the result, if wanted and possible. */
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if (result == 0 && oss != NULL)
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{
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oss->ss_sp = osas.ss_sp;
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oss->ss_onstack = (osas.ss_flags & SS_ONSTACK) != 0;
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}
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return result;
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}
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link_warning (sigstack, "the `sigstack' function is dangerous. `sigaltstack' should be used instead.")
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#else
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# include <signal/sigstack.c>
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#endif
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