| 1 | /* A GNU-like <signal.h>.
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| 2 |
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| 3 | Copyright (C) 2006-2021 Free Software Foundation, Inc.
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| 4 |
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| 5 | This file is free software: you can redistribute it and/or modify
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| 6 | it under the terms of the GNU Lesser General Public License as
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| 7 | published by the Free Software Foundation; either version 2.1 of the
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| 8 | License, or (at your option) any later version.
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| 9 |
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| 10 | This file is distributed in the hope that it will be useful,
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| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of
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| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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| 13 | GNU Lesser General Public License for more details.
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| 14 |
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| 15 | You should have received a copy of the GNU Lesser General Public License
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| 16 | along with this program. If not, see <https://www.gnu.org/licenses/>. */
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| 17 |
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| 18 | #if __GNUC__ >= 3
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| 19 | @PRAGMA_SYSTEM_HEADER@
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| 20 | #endif
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| 21 | @PRAGMA_COLUMNS@
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| 22 |
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| 23 | #if defined __need_sig_atomic_t || defined __need_sigset_t || defined _GL_ALREADY_INCLUDING_SIGNAL_H || (defined _SIGNAL_H && !defined __SIZEOF_PTHREAD_MUTEX_T)
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| 24 | /* Special invocation convention:
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| 25 | - Inside glibc header files.
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| 26 | - On glibc systems we have a sequence of nested includes
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| 27 | <signal.h> -> <ucontext.h> -> <signal.h>.
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| 28 | In this situation, the functions are not yet declared, therefore we cannot
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| 29 | provide the C++ aliases.
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| 30 | - On glibc systems with GCC 4.3 we have a sequence of nested includes
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| 31 | <csignal> -> </usr/include/signal.h> -> <sys/ucontext.h> -> <signal.h>.
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| 32 | In this situation, some of the functions are not yet declared, therefore
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| 33 | we cannot provide the C++ aliases. */
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| 34 |
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| 35 | # @INCLUDE_NEXT@ @NEXT_SIGNAL_H@
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| 36 |
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| 37 | #else
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| 38 | /* Normal invocation convention. */
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| 39 |
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| 40 | #ifndef _@GUARD_PREFIX@_SIGNAL_H
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| 41 |
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| 42 | #define _GL_ALREADY_INCLUDING_SIGNAL_H
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| 43 |
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| 44 | /* Define pid_t, uid_t.
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| 45 | Also, mingw defines sigset_t not in <signal.h>, but in <sys/types.h>.
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| 46 | On Solaris 10, <signal.h> includes <sys/types.h>, which eventually includes
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| 47 | us; so include <sys/types.h> now, before the second inclusion guard. */
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| 48 | #include <sys/types.h>
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| 49 |
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| 50 | /* The include_next requires a split double-inclusion guard. */
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| 51 | #@INCLUDE_NEXT@ @NEXT_SIGNAL_H@
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| 52 |
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| 53 | #undef _GL_ALREADY_INCLUDING_SIGNAL_H
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| 54 |
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| 55 | #ifndef _@GUARD_PREFIX@_SIGNAL_H
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| 56 | #define _@GUARD_PREFIX@_SIGNAL_H
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| 57 |
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| 58 | /* Mac OS X 10.3, FreeBSD 6.4, OpenBSD 3.8, OSF/1 4.0, Solaris 2.6, Android,
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| 59 | OS/2 kLIBC declare pthread_sigmask in <pthread.h>, not in <signal.h>.
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| 60 | But avoid namespace pollution on glibc systems.*/
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| 61 | #if (@GNULIB_PTHREAD_SIGMASK@ || defined GNULIB_POSIXCHECK) \
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| 62 | && ((defined __APPLE__ && defined __MACH__) \
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| 63 | || defined __FreeBSD__ || defined __OpenBSD__ || defined __osf__ \
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| 64 | || defined __sun || defined __ANDROID__ || defined __KLIBC__) \
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| 65 | && ! defined __GLIBC__
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| 66 | # include <pthread.h>
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| 67 | #endif
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| 68 |
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| 69 | /* The definitions of _GL_FUNCDECL_RPL etc. are copied here. */
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| 70 |
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| 71 | /* The definition of _GL_ARG_NONNULL is copied here. */
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| 72 |
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| 73 | /* The definition of _GL_WARN_ON_USE is copied here. */
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| 74 |
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| 75 | /* On AIX, sig_atomic_t already includes volatile. C99 requires that
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| 76 | 'volatile sig_atomic_t' ignore the extra modifier, but C89 did not.
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| 77 | Hence, redefine this to a non-volatile type as needed. */
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| 78 | #if ! @HAVE_TYPE_VOLATILE_SIG_ATOMIC_T@
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| 79 | # if !GNULIB_defined_sig_atomic_t
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| 80 | typedef int rpl_sig_atomic_t;
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| 81 | # undef sig_atomic_t
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| 82 | # define sig_atomic_t rpl_sig_atomic_t
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| 83 | # define GNULIB_defined_sig_atomic_t 1
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| 84 | # endif
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| 85 | #endif
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| 86 |
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| 87 | /* A set or mask of signals. */
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| 88 | #if !@HAVE_SIGSET_T@
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| 89 | # if !GNULIB_defined_sigset_t
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| 90 | typedef unsigned int sigset_t;
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| 91 | # define GNULIB_defined_sigset_t 1
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| 92 | # endif
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| 93 | #endif
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| 94 |
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| 95 | /* Define sighandler_t, the type of signal handlers. A GNU extension. */
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| 96 | #if !@HAVE_SIGHANDLER_T@
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| 97 | # ifdef __cplusplus
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| 98 | extern "C" {
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| 99 | # endif
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| 100 | # if !GNULIB_defined_sighandler_t
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| 101 | typedef void (*sighandler_t) (int);
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| 102 | # define GNULIB_defined_sighandler_t 1
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| 103 | # endif
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| 104 | # ifdef __cplusplus
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| 105 | }
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| 106 | # endif
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| 107 | #endif
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| 108 |
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| 109 |
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| 110 | #if @GNULIB_SIGNAL_H_SIGPIPE@
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| 111 | # ifndef SIGPIPE
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| 112 | /* Define SIGPIPE to a value that does not overlap with other signals. */
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| 113 | # define SIGPIPE 13
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| 114 | # define GNULIB_defined_SIGPIPE 1
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| 115 | /* To actually use SIGPIPE, you also need the gnulib modules 'sigprocmask',
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| 116 | 'write', 'stdio'. */
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| 117 | # endif
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| 118 | #endif
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| 119 |
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| 120 |
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| 121 | /* Maximum signal number + 1. */
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| 122 | #ifndef NSIG
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| 123 | # if defined __TANDEM
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| 124 | # define NSIG 32
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| 125 | # endif
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| 126 | #endif
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| 127 |
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| 128 |
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| 129 | #if @GNULIB_PTHREAD_SIGMASK@
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| 130 | # if @REPLACE_PTHREAD_SIGMASK@
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| 131 | # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
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| 132 | # undef pthread_sigmask
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| 133 | # define pthread_sigmask rpl_pthread_sigmask
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| 134 | # endif
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| 135 | _GL_FUNCDECL_RPL (pthread_sigmask, int,
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| 136 | (int how,
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| 137 | const sigset_t *restrict new_mask,
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| 138 | sigset_t *restrict old_mask));
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| 139 | _GL_CXXALIAS_RPL (pthread_sigmask, int,
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| 140 | (int how,
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| 141 | const sigset_t *restrict new_mask,
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| 142 | sigset_t *restrict old_mask));
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| 143 | # else
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| 144 | # if !(@HAVE_PTHREAD_SIGMASK@ || defined pthread_sigmask)
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| 145 | _GL_FUNCDECL_SYS (pthread_sigmask, int,
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| 146 | (int how,
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| 147 | const sigset_t *restrict new_mask,
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| 148 | sigset_t *restrict old_mask));
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| 149 | # endif
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| 150 | _GL_CXXALIAS_SYS (pthread_sigmask, int,
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| 151 | (int how,
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| 152 | const sigset_t *restrict new_mask,
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| 153 | sigset_t *restrict old_mask));
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| 154 | # endif
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| 155 | # if __GLIBC__ >= 2
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| 156 | _GL_CXXALIASWARN (pthread_sigmask);
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| 157 | # endif
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| 158 | #elif defined GNULIB_POSIXCHECK
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| 159 | # undef pthread_sigmask
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| 160 | # if HAVE_RAW_DECL_PTHREAD_SIGMASK
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| 161 | _GL_WARN_ON_USE (pthread_sigmask, "pthread_sigmask is not portable - "
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| 162 | "use gnulib module pthread_sigmask for portability");
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| 163 | # endif
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| 164 | #endif
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| 165 |
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| 166 |
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| 167 | #if @GNULIB_RAISE@
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| 168 | # if @REPLACE_RAISE@
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| 169 | # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
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| 170 | # undef raise
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| 171 | # define raise rpl_raise
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| 172 | # endif
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| 173 | _GL_FUNCDECL_RPL (raise, int, (int sig));
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| 174 | _GL_CXXALIAS_RPL (raise, int, (int sig));
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| 175 | # else
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| 176 | # if !@HAVE_RAISE@
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| 177 | _GL_FUNCDECL_SYS (raise, int, (int sig));
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| 178 | # endif
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| 179 | _GL_CXXALIAS_SYS (raise, int, (int sig));
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| 180 | # endif
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| 181 | # if __GLIBC__ >= 2
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| 182 | _GL_CXXALIASWARN (raise);
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| 183 | # endif
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| 184 | #elif defined GNULIB_POSIXCHECK
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| 185 | # undef raise
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| 186 | /* Assume raise is always declared. */
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| 187 | _GL_WARN_ON_USE (raise, "raise can crash on native Windows - "
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| 188 | "use gnulib module raise for portability");
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| 189 | #endif
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| 190 |
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| 191 |
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| 192 | #if @GNULIB_SIGPROCMASK@
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| 193 | # if !@HAVE_POSIX_SIGNALBLOCKING@
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| 194 |
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| 195 | # ifndef GNULIB_defined_signal_blocking
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| 196 | # define GNULIB_defined_signal_blocking 1
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| 197 | # endif
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| 198 |
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| 199 | /* Maximum signal number + 1. */
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| 200 | # ifndef NSIG
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| 201 | # define NSIG 32
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| 202 | # endif
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| 203 |
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| 204 | /* This code supports only 32 signals. */
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| 205 | # if !GNULIB_defined_verify_NSIG_constraint
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| 206 | typedef int verify_NSIG_constraint[NSIG <= 32 ? 1 : -1];
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| 207 | # define GNULIB_defined_verify_NSIG_constraint 1
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| 208 | # endif
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| 209 |
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| 210 | # endif
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| 211 |
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| 212 | /* When also using extern inline, suppress the use of static inline in
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| 213 | standard headers of problematic Apple configurations, as Libc at
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| 214 | least through Libc-825.26 (2013-04-09) mishandles it; see, e.g.,
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| 215 | <https://lists.gnu.org/r/bug-gnulib/2012-12/msg00023.html>.
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| 216 | Perhaps Apple will fix this some day. */
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| 217 | #if (defined _GL_EXTERN_INLINE_IN_USE && defined __APPLE__ \
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| 218 | && (defined __i386__ || defined __x86_64__))
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| 219 | # undef sigaddset
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| 220 | # undef sigdelset
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| 221 | # undef sigemptyset
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| 222 | # undef sigfillset
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| 223 | # undef sigismember
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| 224 | #endif
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| 225 |
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| 226 | /* Test whether a given signal is contained in a signal set. */
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| 227 | # if @HAVE_POSIX_SIGNALBLOCKING@
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| 228 | /* This function is defined as a macro on Mac OS X. */
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| 229 | # if defined __cplusplus && defined GNULIB_NAMESPACE
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| 230 | # undef sigismember
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| 231 | # endif
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| 232 | # else
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| 233 | _GL_FUNCDECL_SYS (sigismember, int, (const sigset_t *set, int sig)
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| 234 | _GL_ARG_NONNULL ((1)));
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| 235 | # endif
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| 236 | _GL_CXXALIAS_SYS (sigismember, int, (const sigset_t *set, int sig));
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| 237 | _GL_CXXALIASWARN (sigismember);
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| 238 |
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| 239 | /* Initialize a signal set to the empty set. */
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| 240 | # if @HAVE_POSIX_SIGNALBLOCKING@
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| 241 | /* This function is defined as a macro on Mac OS X. */
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| 242 | # if defined __cplusplus && defined GNULIB_NAMESPACE
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| 243 | # undef sigemptyset
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| 244 | # endif
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| 245 | # else
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| 246 | _GL_FUNCDECL_SYS (sigemptyset, int, (sigset_t *set) _GL_ARG_NONNULL ((1)));
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| 247 | # endif
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| 248 | _GL_CXXALIAS_SYS (sigemptyset, int, (sigset_t *set));
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| 249 | _GL_CXXALIASWARN (sigemptyset);
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| 250 |
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| 251 | /* Add a signal to a signal set. */
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| 252 | # if @HAVE_POSIX_SIGNALBLOCKING@
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| 253 | /* This function is defined as a macro on Mac OS X. */
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| 254 | # if defined __cplusplus && defined GNULIB_NAMESPACE
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| 255 | # undef sigaddset
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| 256 | # endif
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| 257 | # else
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| 258 | _GL_FUNCDECL_SYS (sigaddset, int, (sigset_t *set, int sig)
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| 259 | _GL_ARG_NONNULL ((1)));
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| 260 | # endif
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| 261 | _GL_CXXALIAS_SYS (sigaddset, int, (sigset_t *set, int sig));
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| 262 | _GL_CXXALIASWARN (sigaddset);
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| 263 |
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| 264 | /* Remove a signal from a signal set. */
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| 265 | # if @HAVE_POSIX_SIGNALBLOCKING@
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| 266 | /* This function is defined as a macro on Mac OS X. */
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| 267 | # if defined __cplusplus && defined GNULIB_NAMESPACE
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| 268 | # undef sigdelset
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| 269 | # endif
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| 270 | # else
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| 271 | _GL_FUNCDECL_SYS (sigdelset, int, (sigset_t *set, int sig)
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| 272 | _GL_ARG_NONNULL ((1)));
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| 273 | # endif
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| 274 | _GL_CXXALIAS_SYS (sigdelset, int, (sigset_t *set, int sig));
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| 275 | _GL_CXXALIASWARN (sigdelset);
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| 276 |
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| 277 | /* Fill a signal set with all possible signals. */
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| 278 | # if @HAVE_POSIX_SIGNALBLOCKING@
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| 279 | /* This function is defined as a macro on Mac OS X. */
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| 280 | # if defined __cplusplus && defined GNULIB_NAMESPACE
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| 281 | # undef sigfillset
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| 282 | # endif
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| 283 | # else
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| 284 | _GL_FUNCDECL_SYS (sigfillset, int, (sigset_t *set) _GL_ARG_NONNULL ((1)));
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| 285 | # endif
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| 286 | _GL_CXXALIAS_SYS (sigfillset, int, (sigset_t *set));
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| 287 | _GL_CXXALIASWARN (sigfillset);
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| 288 |
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| 289 | /* Return the set of those blocked signals that are pending. */
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| 290 | # if !@HAVE_POSIX_SIGNALBLOCKING@
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| 291 | _GL_FUNCDECL_SYS (sigpending, int, (sigset_t *set) _GL_ARG_NONNULL ((1)));
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| 292 | # endif
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| 293 | _GL_CXXALIAS_SYS (sigpending, int, (sigset_t *set));
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| 294 | _GL_CXXALIASWARN (sigpending);
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| 295 |
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| 296 | /* If OLD_SET is not NULL, put the current set of blocked signals in *OLD_SET.
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| 297 | Then, if SET is not NULL, affect the current set of blocked signals by
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| 298 | combining it with *SET as indicated in OPERATION.
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| 299 | In this implementation, you are not allowed to change a signal handler
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| 300 | while the signal is blocked. */
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| 301 | # if !@HAVE_POSIX_SIGNALBLOCKING@
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| 302 | # define SIG_BLOCK 0 /* blocked_set = blocked_set | *set; */
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| 303 | # define SIG_SETMASK 1 /* blocked_set = *set; */
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| 304 | # define SIG_UNBLOCK 2 /* blocked_set = blocked_set & ~*set; */
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| 305 | _GL_FUNCDECL_SYS (sigprocmask, int,
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| 306 | (int operation,
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| 307 | const sigset_t *restrict set,
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| 308 | sigset_t *restrict old_set));
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| 309 | # endif
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| 310 | _GL_CXXALIAS_SYS (sigprocmask, int,
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| 311 | (int operation,
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| 312 | const sigset_t *restrict set,
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| 313 | sigset_t *restrict old_set));
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| 314 | _GL_CXXALIASWARN (sigprocmask);
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| 315 |
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| 316 | /* Install the handler FUNC for signal SIG, and return the previous
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| 317 | handler. */
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| 318 | # ifdef __cplusplus
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| 319 | extern "C" {
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| 320 | # endif
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| 321 | # if !GNULIB_defined_function_taking_int_returning_void_t
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| 322 | typedef void (*_gl_function_taking_int_returning_void_t) (int);
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| 323 | # define GNULIB_defined_function_taking_int_returning_void_t 1
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| 324 | # endif
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| 325 | # ifdef __cplusplus
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| 326 | }
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| 327 | # endif
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| 328 | # if !@HAVE_POSIX_SIGNALBLOCKING@
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| 329 | # if !(defined __cplusplus && defined GNULIB_NAMESPACE)
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| 330 | # define signal rpl_signal
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| 331 | # endif
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| 332 | _GL_FUNCDECL_RPL (signal, _gl_function_taking_int_returning_void_t,
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| 333 | (int sig, _gl_function_taking_int_returning_void_t func));
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| 334 | _GL_CXXALIAS_RPL (signal, _gl_function_taking_int_returning_void_t,
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| 335 | (int sig, _gl_function_taking_int_returning_void_t func));
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| 336 | # else
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| 337 | /* On OpenBSD, the declaration of 'signal' may not be present at this point,
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| 338 | because it occurs in <sys/signal.h>, not <signal.h> directly. */
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| 339 | # if defined __OpenBSD__
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| 340 | _GL_FUNCDECL_SYS (signal, _gl_function_taking_int_returning_void_t,
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| 341 | (int sig, _gl_function_taking_int_returning_void_t func));
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| 342 | # endif
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| 343 | _GL_CXXALIAS_SYS (signal, _gl_function_taking_int_returning_void_t,
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| 344 | (int sig, _gl_function_taking_int_returning_void_t func));
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| 345 | # endif
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| 346 | # if __GLIBC__ >= 2
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| 347 | _GL_CXXALIASWARN (signal);
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| 348 | # endif
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| 349 |
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| 350 | # if !@HAVE_POSIX_SIGNALBLOCKING@ && GNULIB_defined_SIGPIPE
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| 351 | /* Raise signal SIGPIPE. */
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| 352 | _GL_EXTERN_C int _gl_raise_SIGPIPE (void);
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| 353 | # endif
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| 354 |
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| 355 | #elif defined GNULIB_POSIXCHECK
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| 356 | # undef sigaddset
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| 357 | # if HAVE_RAW_DECL_SIGADDSET
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| 358 | _GL_WARN_ON_USE (sigaddset, "sigaddset is unportable - "
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| 359 | "use the gnulib module sigprocmask for portability");
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| 360 | # endif
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| 361 | # undef sigdelset
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| 362 | # if HAVE_RAW_DECL_SIGDELSET
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| 363 | _GL_WARN_ON_USE (sigdelset, "sigdelset is unportable - "
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| 364 | "use the gnulib module sigprocmask for portability");
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| 365 | # endif
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| 366 | # undef sigemptyset
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| 367 | # if HAVE_RAW_DECL_SIGEMPTYSET
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| 368 | _GL_WARN_ON_USE (sigemptyset, "sigemptyset is unportable - "
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| 369 | "use the gnulib module sigprocmask for portability");
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| 370 | # endif
|
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| 371 | # undef sigfillset
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|---|
| 372 | # if HAVE_RAW_DECL_SIGFILLSET
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|---|
| 373 | _GL_WARN_ON_USE (sigfillset, "sigfillset is unportable - "
|
|---|
| 374 | "use the gnulib module sigprocmask for portability");
|
|---|
| 375 | # endif
|
|---|
| 376 | # undef sigismember
|
|---|
| 377 | # if HAVE_RAW_DECL_SIGISMEMBER
|
|---|
| 378 | _GL_WARN_ON_USE (sigismember, "sigismember is unportable - "
|
|---|
| 379 | "use the gnulib module sigprocmask for portability");
|
|---|
| 380 | # endif
|
|---|
| 381 | # undef sigpending
|
|---|
| 382 | # if HAVE_RAW_DECL_SIGPENDING
|
|---|
| 383 | _GL_WARN_ON_USE (sigpending, "sigpending is unportable - "
|
|---|
| 384 | "use the gnulib module sigprocmask for portability");
|
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| 385 | # endif
|
|---|
| 386 | # undef sigprocmask
|
|---|
| 387 | # if HAVE_RAW_DECL_SIGPROCMASK
|
|---|
| 388 | _GL_WARN_ON_USE (sigprocmask, "sigprocmask is unportable - "
|
|---|
| 389 | "use the gnulib module sigprocmask for portability");
|
|---|
| 390 | # endif
|
|---|
| 391 | #endif /* @GNULIB_SIGPROCMASK@ */
|
|---|
| 392 |
|
|---|
| 393 |
|
|---|
| 394 | #if @GNULIB_SIGACTION@
|
|---|
| 395 | # if !@HAVE_SIGACTION@
|
|---|
| 396 |
|
|---|
| 397 | # if !@HAVE_SIGINFO_T@
|
|---|
| 398 |
|
|---|
| 399 | # if !GNULIB_defined_siginfo_types
|
|---|
| 400 |
|
|---|
| 401 | /* Present to allow compilation, but unsupported by gnulib. */
|
|---|
| 402 | union sigval
|
|---|
| 403 | {
|
|---|
| 404 | int sival_int;
|
|---|
| 405 | void *sival_ptr;
|
|---|
| 406 | };
|
|---|
| 407 |
|
|---|
| 408 | /* Present to allow compilation, but unsupported by gnulib. */
|
|---|
| 409 | struct siginfo_t
|
|---|
| 410 | {
|
|---|
| 411 | int si_signo;
|
|---|
| 412 | int si_code;
|
|---|
| 413 | int si_errno;
|
|---|
| 414 | pid_t si_pid;
|
|---|
| 415 | uid_t si_uid;
|
|---|
| 416 | void *si_addr;
|
|---|
| 417 | int si_status;
|
|---|
| 418 | long si_band;
|
|---|
| 419 | union sigval si_value;
|
|---|
| 420 | };
|
|---|
| 421 | typedef struct siginfo_t siginfo_t;
|
|---|
| 422 |
|
|---|
| 423 | # define GNULIB_defined_siginfo_types 1
|
|---|
| 424 | # endif
|
|---|
| 425 |
|
|---|
| 426 | # endif /* !@HAVE_SIGINFO_T@ */
|
|---|
| 427 |
|
|---|
| 428 | /* We assume that platforms which lack the sigaction() function also lack
|
|---|
| 429 | the 'struct sigaction' type, and vice versa. */
|
|---|
| 430 |
|
|---|
| 431 | # if !GNULIB_defined_struct_sigaction
|
|---|
| 432 |
|
|---|
| 433 | struct sigaction
|
|---|
| 434 | {
|
|---|
| 435 | union
|
|---|
| 436 | {
|
|---|
| 437 | void (*_sa_handler) (int);
|
|---|
| 438 | /* Present to allow compilation, but unsupported by gnulib. POSIX
|
|---|
| 439 | says that implementations may, but not must, make sa_sigaction
|
|---|
| 440 | overlap with sa_handler, but we know of no implementation where
|
|---|
| 441 | they do not overlap. */
|
|---|
| 442 | void (*_sa_sigaction) (int, siginfo_t *, void *);
|
|---|
| 443 | } _sa_func;
|
|---|
| 444 | sigset_t sa_mask;
|
|---|
| 445 | /* Not all POSIX flags are supported. */
|
|---|
| 446 | int sa_flags;
|
|---|
| 447 | };
|
|---|
| 448 | # define sa_handler _sa_func._sa_handler
|
|---|
| 449 | # define sa_sigaction _sa_func._sa_sigaction
|
|---|
| 450 | /* Unsupported flags are not present. */
|
|---|
| 451 | # define SA_RESETHAND 1
|
|---|
| 452 | # define SA_NODEFER 2
|
|---|
| 453 | # define SA_RESTART 4
|
|---|
| 454 |
|
|---|
| 455 | # define GNULIB_defined_struct_sigaction 1
|
|---|
| 456 | # endif
|
|---|
| 457 |
|
|---|
| 458 | _GL_FUNCDECL_SYS (sigaction, int, (int, const struct sigaction *restrict,
|
|---|
| 459 | struct sigaction *restrict));
|
|---|
| 460 |
|
|---|
| 461 | # elif !@HAVE_STRUCT_SIGACTION_SA_SIGACTION@
|
|---|
| 462 |
|
|---|
| 463 | # define sa_sigaction sa_handler
|
|---|
| 464 |
|
|---|
| 465 | # endif /* !@HAVE_SIGACTION@, !@HAVE_STRUCT_SIGACTION_SA_SIGACTION@ */
|
|---|
| 466 |
|
|---|
| 467 | _GL_CXXALIAS_SYS (sigaction, int, (int, const struct sigaction *restrict,
|
|---|
| 468 | struct sigaction *restrict));
|
|---|
| 469 | _GL_CXXALIASWARN (sigaction);
|
|---|
| 470 |
|
|---|
| 471 | #elif defined GNULIB_POSIXCHECK
|
|---|
| 472 | # undef sigaction
|
|---|
| 473 | # if HAVE_RAW_DECL_SIGACTION
|
|---|
| 474 | _GL_WARN_ON_USE (sigaction, "sigaction is unportable - "
|
|---|
| 475 | "use the gnulib module sigaction for portability");
|
|---|
| 476 | # endif
|
|---|
| 477 | #endif
|
|---|
| 478 |
|
|---|
| 479 | /* Some systems don't have SA_NODEFER. */
|
|---|
| 480 | #ifndef SA_NODEFER
|
|---|
| 481 | # define SA_NODEFER 0
|
|---|
| 482 | #endif
|
|---|
| 483 |
|
|---|
| 484 |
|
|---|
| 485 | #endif /* _@GUARD_PREFIX@_SIGNAL_H */
|
|---|
| 486 | #endif /* _@GUARD_PREFIX@_SIGNAL_H */
|
|---|
| 487 | #endif
|
|---|
