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1897bc3f93
* sysdeps/gnu/errlist.awk: Define _sys_errlist_internal and _sys_nerr_internal with INTVARDEF2. * include/libc-symbols.h (INTVARDEF2): New macro. * include/stdio.h (_sys_errlist_internal): Declare as hidden. (_sys_nerr_internal): Library. * sysdeps/posix/signal.c (_sigintr): Define as hidden. * sysdeps/posix/sigintr.c (_sigintr): Declare as hidden.
58 lines
1.7 KiB
C
58 lines
1.7 KiB
C
/* Copyright (C) 1992, 1994, 1996, 2002 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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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 <stddef.h>
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#include <signal.h>
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#include <errno.h>
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/* If INTERRUPT is nonzero, make signal SIG interrupt system calls
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(causing them to fail with EINTR); if INTERRUPT is zero, make system
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calls be restarted after signal SIG. */
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int
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siginterrupt (sig, interrupt)
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int sig;
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int interrupt;
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{
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#ifdef SA_RESTART
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extern sigset_t _sigintr attribute_hidden; /* Defined in signal.c. */
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struct sigaction action;
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if (__sigaction (sig, (struct sigaction *) NULL, &action) < 0)
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return -1;
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if (interrupt)
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{
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__sigaddset (&_sigintr, sig);
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action.sa_flags &= ~SA_RESTART;
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}
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else
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{
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__sigdelset (&_sigintr, sig);
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action.sa_flags |= SA_RESTART;
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}
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if (__sigaction (sig, &action, (struct sigaction *) NULL) < 0)
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return -1;
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return 0;
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#else
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__set_errno (ENOSYS);
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return -1;
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#endif
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}
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