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authorZack Weinberg <zackw@panix.com>2016-12-01 19:24:13 -0500
committerZack Weinberg <zackw@panix.com>2017-05-20 19:04:43 -0400
commita992f506ff7162da2afa5a6151cc6f15949ceef4 (patch)
tree93ed5242c166dde96fd0ec244801d9f5fdaca86a /bits
parent500b3a499fff61157db464a99f459c772d7eb6c0 (diff)
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Remove __need macros from signal.h.
The types affected are __sig_atomic_t, sig_atomic_t, __sigset_t, sigset_t, sigval_t, sigevent_t, and siginfo_t. __sig_atomic_t is a scalar, so it's now directly available from bits/types.h. The others get bits/types/ headers. Side effects include: There have been small changes to which non-signal headers expose which subset of the signal-related types. A couple of architectures' nested siginfo_t fields had to be renamed to prevent undesired macro expansion. Internal code that wants to manipulate signal masks must now include <sigsetops.h> (which is not installed) and should be aware that __sigaddset, __sigandset, __sigdelset, __sigemptyset, and __sigorset no longer return a value (unlike the public API). Relatedly, the public signal.h no longer declares any of those functions. The obsolete sigmask() macro no longer has a system-specific definition -- in the cases where it matters, it didn't work anyway. New Linux architectures should create bits/siginfo-arch.h and/or bits/siginfo-consts-arch.h to customize their siginfo_t, rather than duplicating everything in bits/siginfo.h (which no longer exists). Add new __SI_* macros if necessary. Ports to other operating systems are strongly encouraged to generalize this scheme further. * bits/sigevent-consts.h * bits/siginfo-consts.h * bits/types/__sigset_t.h * bits/types/sigevent_t.h * bits/types/siginfo_t.h * sysdeps/unix/sysv/linux/bits/sigevent-consts.h * sysdeps/unix/sysv/linux/bits/siginfo-consts.h * sysdeps/unix/sysv/linux/bits/types/__sigset_t.h * sysdeps/unix/sysv/linux/bits/types/sigevent_t.h * sysdeps/unix/sysv/linux/bits/types/siginfo_t.h: New system-dependent bits headers. * sysdeps/unix/sysv/linux/bits/siginfo-arch.h * sysdeps/unix/sysv/linux/bits/siginfo-consts-arch.h * sysdeps/unix/sysv/linux/ia64/bits/siginfo-arch.h * sysdeps/unix/sysv/linux/ia64/bits/siginfo-consts-arch.h * sysdeps/unix/sysv/linux/mips/bits/siginfo-arch.h * sysdeps/unix/sysv/linux/sparc/bits/siginfo-arch.h * sysdeps/unix/sysv/linux/tile/bits/siginfo-arch.h * sysdeps/unix/sysv/linux/tile/bits/siginfo-consts-arch.h * sysdeps/unix/sysv/linux/x86/bits/siginfo-arch.h: New Linux-only system-dependent bits headers. * signal/bits/types/sig_atomic_t.h * signal/bits/types/sigset_t.h * signal/bits/types/sigval_t.h: New non-system-dependent bits headers. * sysdeps/generic/sigsetops.h * sysdeps/unix/sysv/linux/sigsetops.h: New internal headers. * include/bits/types/sig_atomic_t.h * include/bits/types/sigset_t.h * include/bits/types/sigval_t.h: New wrappers. * signal/sigsetops.h * bits/siginfo.h * bits/sigset.h * sysdeps/unix/sysv/linux/bits/siginfo.h * sysdeps/unix/sysv/linux/bits/sigset.h * sysdeps/unix/sysv/linux/ia64/bits/siginfo.h * sysdeps/unix/sysv/linux/mips/bits/siginfo.h * sysdeps/unix/sysv/linux/s390/bits/siginfo.h * sysdeps/unix/sysv/linux/sparc/bits/siginfo.h * sysdeps/unix/sysv/linux/tile/bits/siginfo.h * sysdeps/unix/sysv/linux/x86/bits/siginfo.h: Deleted. * signal/Makefile, sysdeps/unix/sysv/linux/Makefile: Update lists of installed headers. * posix/bits/types.h: Define __sig_atomic_t here. * signal/signal.h: Use the new bits headers; no need to handle __need_sig_atomic_t nor __need_sigset_t. Don't use __sigmask to define sigmask. * include/signal.h: No need to handle __need_sig_atomic_t nor __need_sigset_t. Don't define __sigemptyset. * io/sys/poll.h, setjmp/setjmp.h * sysdeps/arm/sys/ucontext.h, sysdeps/generic/sys/ucontext.h * sysdeps/i386/sys/ucontext.h, sysdeps/m68k/sys/ucontext.h * sysdeps/mach/hurd/i386/bits/sigcontext.h * sysdeps/mips/sys/ucontext.h, sysdeps/powerpc/novmxsetjmp.h * sysdeps/pthread/bits/sigthread.h * sysdeps/unix/sysv/linux/hppa/sys/ucontext.h * sysdeps/unix/sysv/linux/m68k/sys/ucontext.h * sysdeps/unix/sysv/linux/mips/sys/ucontext.h * sysdeps/unix/sysv/linux/nios2/sys/ucontext.h * sysdeps/unix/sysv/linux/powerpc/sys/ucontext.h * sysdeps/unix/sysv/linux/s390/sys/ucontext.h * sysdeps/unix/sysv/linux/sh/sys/ucontext.h * sysdeps/unix/sysv/linux/sparc/sys/ucontext.h * sysdeps/unix/sysv/linux/tile/sys/ucontext.h * sysdeps/unix/sysv/linux/x86/sys/ucontext.h: Use bits/types/__sigset_t.h. * misc/sys/select.h, posix/spawn.h * sysdeps/unix/sysv/linux/powerpc/sys/ucontext.h * sysdeps/unix/sysv/linux/sys/epoll.h * sysdeps/unix/sysv/linux/sys/signalfd.h: Use bits/types/sigset_t.h. * resolv/netdb.h, rt/mqueue.h: Use bits/types/sigevent_t.h. * rt/aio.h: Use bits/types/sigevent_t.h and bits/sigevent-consts.h. * socket/sys/socket.h: Don't include bits/sigset.h. * login/utmp_file.c, shadow/lckpwdf.c, signal/sigandset.c * signal/sigisempty.c, stdlib/abort.c, sysdeps/posix/profil.c * sysdeps/posix/sigignore.c, sysdeps/posix/sigintr.c * sysdeps/posix/signal.c, sysdeps/posix/sigset.c * sysdeps/posix/sprofil.c, sysdeps/posix/sysv_signal.c * sysdeps/unix/sysv/linux/nptl-signals.h: Include sigsetops.h. * signal/sigaddset.c, signal/sigandset.c, signal/sigdelset.c * signal/sigorset.c, stdlib/abort.c, sysdeps/posix/sigignore.c * sysdeps/posix/signal.c, sysdeps/posix/sigset.c: __sigaddset, __sigandset, __sigdelset, __sigemptyset, __sigorset now return no value. * signal/sigaddset.c, signal/sigdelset.c, signal/sigismem.c Include <errno.h>, <signal.h>, and <sigsetops.h> instead of "sigsetops.h". * signal/sigsetops.c: Explicitly define __sigismember, __sigaddset, and __sigdelset as compatibility symbols. * signal/Versions: Correct commentary on __sigpause, __sigaddset, __sigdelset, __sigismember. * inet/rcmd.c: Include sigsetops.h. Convert old code using __sigblock/__sigsetmask to use __sigprocmask and friends.
Diffstat (limited to 'bits')
-rw-r--r--bits/sigevent-consts.h37
-rw-r--r--bits/siginfo-consts.h (renamed from bits/siginfo.h)74
-rw-r--r--bits/sigset.h84
-rw-r--r--bits/types/__sigset_t.h7
-rw-r--r--bits/types/sigevent_t.h17
-rw-r--r--bits/types/siginfo_t.h21
6 files changed, 86 insertions, 154 deletions
diff --git a/bits/sigevent-consts.h b/bits/sigevent-consts.h
new file mode 100644
index 0000000..f5940e0
--- /dev/null
+++ b/bits/sigevent-consts.h
@@ -0,0 +1,37 @@
+/* sigevent constants. Stub version.
+ Copyright (C) 1997-2017 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, see
+ <http://www.gnu.org/licenses/>. */
+
+#ifndef _BITS_SIGEVENT_CONSTS_H
+#define _BITS_SIGEVENT_CONSTS_H 1
+
+#if !defined _SIGNAL_H && !defined _AIO_H
+#error "Don't include <bits/sigevent-consts.h> directly; use <signal.h> instead."
+#endif
+
+/* `sigev_notify' values. */
+enum
+{
+ SIGEV_SIGNAL = 0, /* Notify via signal. */
+# define SIGEV_SIGNAL SIGEV_SIGNAL
+ SIGEV_NONE, /* Other notification: meaningless. */
+# define SIGEV_NONE SIGEV_NONE
+ SIGEV_THREAD /* Deliver via thread creation. */
+# define SIGEV_THREAD SIGEV_THREAD
+};
+
+#endif
diff --git a/bits/siginfo.h b/bits/siginfo-consts.h
index 4919df5..a58ac4b 100644
--- a/bits/siginfo.h
+++ b/bits/siginfo-consts.h
@@ -1,4 +1,4 @@
-/* siginfo_t, sigevent and constants. Stub version.
+/* siginfo_t constants. Stub version.
Copyright (C) 1997-2017 Free Software Foundation, Inc.
This file is part of the GNU C Library.
@@ -16,42 +16,8 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
-#if !defined _SIGNAL_H && !defined __need_siginfo_t \
- && !defined __need_sigevent_t
-# error "Never include this file directly. Use <signal.h> instead"
-#endif
-
-#if (!defined __have_sigval_t \
- && (defined _SIGNAL_H || defined __need_siginfo_t \
- || defined __need_sigevent_t))
-# define __have_sigval_t 1
-
-/* Type for data associated with a signal. */
-typedef union sigval
- {
- int sival_int;
- void *sival_ptr;
- } sigval_t;
-#endif
-
-#if (!defined __have_siginfo_t \
- && (defined _SIGNAL_H || defined __need_siginfo_t))
-# define __have_siginfo_t 1
-
-typedef struct siginfo
- {
- int si_signo; /* Signal number. */
- int si_errno; /* If non-zero, an errno value associated with
- this signal, as defined in <errno.h>. */
- int si_code; /* Signal code. */
- __pid_t si_pid; /* Sending process ID. */
- __uid_t si_uid; /* Real user ID of sending process. */
- void *si_addr; /* Address of faulting instruction. */
- int si_status; /* Exit value or signal. */
- long int si_band; /* Band event for SIGPOLL. */
- union sigval si_value; /* Signal value. */
- } siginfo_t;
-
+#ifndef _BITS_SIGINFO_CONSTS_H
+#define _BITS_SIGINFO_CONSTS_H 1
/* Values for `si_code'. Positive values are reserved for kernel-generated
signals. */
@@ -181,36 +147,4 @@ enum
};
# endif
-# undef __need_siginfo_t
-#endif /* !have siginfo_t && (have _SIGNAL_H || need siginfo_t). */
-
-
-#if (defined _SIGNAL_H || defined __need_sigevent_t) \
- && !defined __have_sigevent_t
-# define __have_sigevent_t 1
-
-/* Structure to transport application-defined values with signals. */
-# define SIGEV_MAX_SIZE 64
-# define SIGEV_PAD_SIZE ((SIGEV_MAX_SIZE / sizeof (int)) - 3)
-
-typedef struct sigevent
- {
- sigval_t sigev_value;
- int sigev_signo;
- int sigev_notify;
- void (*sigev_notify_function) (sigval_t); /* Function to start. */
- void *sigev_notify_attributes; /* Really pthread_attr_t.*/
- } sigevent_t;
-
-/* `sigev_notify' values. */
-enum
-{
- SIGEV_SIGNAL = 0, /* Notify via signal. */
-# define SIGEV_SIGNAL SIGEV_SIGNAL
- SIGEV_NONE, /* Other notification: meaningless. */
-# define SIGEV_NONE SIGEV_NONE
- SIGEV_THREAD /* Deliver via thread creation. */
-# define SIGEV_THREAD SIGEV_THREAD
-};
-
-#endif /* have _SIGNAL_H. */
+#endif
diff --git a/bits/sigset.h b/bits/sigset.h
deleted file mode 100644
index 4099cc7..0000000
--- a/bits/sigset.h
+++ /dev/null
@@ -1,84 +0,0 @@
-/* __sig_atomic_t, __sigset_t, and related definitions. Generic/BSD version.
- Copyright (C) 1991-2017 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, see
- <http://www.gnu.org/licenses/>. */
-
-#ifndef _SIGSET_H_types
-#define _SIGSET_H_types 1
-
-typedef int __sig_atomic_t;
-
-/* A `sigset_t' has a bit for each signal. */
-typedef unsigned long int __sigset_t;
-
-#endif
-
-
-/* We only want to define these functions if <signal.h> was actually
- included; otherwise we were included just to define the types. Since we
- are namespace-clean, it wouldn't hurt to define extra macros. But
- trouble can be caused by functions being defined (e.g., any global
- register vars declared later will cause compilation errors). */
-
-#if !defined _SIGSET_H_fns && defined _SIGNAL_H
-#define _SIGSET_H_fns 1
-
-#ifndef _EXTERN_INLINE
-# define _EXTERN_INLINE __extern_inline
-#endif
-
-/* Return a mask that includes SIG only. The cast to `sigset_t' avoids
- overflow if `sigset_t' is wider than `int'. */
-#define __sigmask(sig) (((__sigset_t) 1) << ((sig) - 1))
-
-#define __sigemptyset(set) \
- (__extension__ ({ *(set) = (__sigset_t) 0; 0; })
-#define __sigfillset(set) \
- (__extension__ ({ *(set) = ~(__sigset_t) 0; 0; }))
-
-#ifdef _GNU_SOURCE
-# define __sigisemptyset(set) (*(set) == (__sigset_t) 0)
-# define __sigandset(dest, left, right) \
- (__extension__ ({ *(dest) = *(left) & *(right); 0; }))
-# define __sigorset(dest, left, right) \
- (__extension__ ({ *(dest) = *(left) | *(right); 0; }))
-#endif
-
-/* These functions needn't check for a bogus signal number -- error
- checking is done in the non __ versions. */
-
-extern int __sigismember (const __sigset_t *, int);
-extern int __sigaddset (__sigset_t *, int);
-extern int __sigdelset (__sigset_t *, int);
-
-#ifdef __USE_EXTERN_INLINES
-# define __SIGSETFN(NAME, BODY, CONST) \
- _EXTERN_INLINE int \
- NAME (CONST __sigset_t *__set, int __sig) \
- { \
- __sigset_t __mask = __sigmask (__sig); \
- return BODY; \
- }
-
-__SIGSETFN (__sigismember, (*__set & __mask) ? 1 : 0, const)
-__SIGSETFN (__sigaddset, ((*__set |= __mask), 0), )
-__SIGSETFN (__sigdelset, ((*__set &= ~__mask), 0), )
-
-# undef __SIGSETFN
-#endif
-
-
-#endif /* ! _SIGSET_H_fns. */
diff --git a/bits/types/__sigset_t.h b/bits/types/__sigset_t.h
new file mode 100644
index 0000000..c90d760
--- /dev/null
+++ b/bits/types/__sigset_t.h
@@ -0,0 +1,7 @@
+#ifndef ____sigset_t_defined
+#define ____sigset_t_defined 1
+
+/* A `sigset_t' has a bit for each signal. */
+typedef unsigned long int __sigset_t;
+
+#endif
diff --git a/bits/types/sigevent_t.h b/bits/types/sigevent_t.h
new file mode 100644
index 0000000..7b8cb05
--- /dev/null
+++ b/bits/types/sigevent_t.h
@@ -0,0 +1,17 @@
+#ifndef __sigevent_t_defined
+#define __sigevent_t_defined 1
+
+#include <bits/types.h>
+#include <bits/types/sigval_t.h>
+
+/* Structure to transport application-defined values with signals. */
+typedef struct sigevent
+ {
+ sigval_t sigev_value;
+ int sigev_signo;
+ int sigev_notify;
+ void (*sigev_notify_function) (sigval_t); /* Function to start. */
+ void *sigev_notify_attributes; /* Really pthread_attr_t.*/
+ } sigevent_t;
+
+#endif
diff --git a/bits/types/siginfo_t.h b/bits/types/siginfo_t.h
new file mode 100644
index 0000000..ab6bf18
--- /dev/null
+++ b/bits/types/siginfo_t.h
@@ -0,0 +1,21 @@
+#ifndef __siginfo_t_defined
+#define __siginfo_t_defined 1
+
+#include <bits/types.h>
+#include <bits/types/sigval_t.h>
+
+typedef struct siginfo
+ {
+ int si_signo; /* Signal number. */
+ int si_errno; /* If non-zero, an errno value associated with
+ this signal, as defined in <errno.h>. */
+ int si_code; /* Signal code. */
+ __pid_t si_pid; /* Sending process ID. */
+ __uid_t si_uid; /* Real user ID of sending process. */
+ void *si_addr; /* Address of faulting instruction. */
+ int si_status; /* Exit value or signal. */
+ long int si_band; /* Band event for SIGPOLL. */
+ sigval_t si_value; /* Signal value. */
+ } siginfo_t;
+
+#endif