From: Alistair Francis <alistair.francis@wdc.com>
To: libc-alpha@sourceware.org
Cc: alistair23@gmail.com, Alistair Francis <alistair.francis@wdc.com>,
Adhemerval Zanella <adhemerval.zanella@linaro.org>
Subject: [PATCH v6 1/3] bits/sem.h: Split out struct semid_ds
Date: Tue, 28 Apr 2020 15:05:05 -0700 [thread overview]
Message-ID: <20200428220507.3409362-2-alistair.francis@wdc.com> (raw)
In-Reply-To: <20200428220507.3409362-1-alistair.francis@wdc.com>
Split out the struct semid_ds into it's own file. This will allow us to
have architectures specify their own version.
Reviewed-by: Adhemerval Zanella <adhemerval.zanella@linaro.org>
---
sysdeps/unix/sysv/linux/Makefile | 1 +
sysdeps/unix/sysv/linux/bits/sem.h | 24 +----------
.../sysv/linux/bits/types/struct_semid_ds.h | 43 +++++++++++++++++++
3 files changed, 45 insertions(+), 23 deletions(-)
create mode 100644 sysdeps/unix/sysv/linux/bits/types/struct_semid_ds.h
diff --git a/sysdeps/unix/sysv/linux/Makefile b/sysdeps/unix/sysv/linux/Makefile
index 089a4899d5..db35c29351 100644
--- a/sysdeps/unix/sysv/linux/Makefile
+++ b/sysdeps/unix/sysv/linux/Makefile
@@ -90,6 +90,7 @@ sysdep_headers += sys/mount.h sys/acct.h \
bits/termios-baud.h bits/termios-c_cflag.h \
bits/termios-c_lflag.h bits/termios-tcflow.h \
bits/termios-misc.h \
+ bits/types/struct_semid_ds.h \
bits/ipc-perm.h
tests += tst-clone tst-clone2 tst-clone3 tst-fanotify tst-personality \
diff --git a/sysdeps/unix/sysv/linux/bits/sem.h b/sysdeps/unix/sysv/linux/bits/sem.h
index e0f4155c67..0d1813ec67 100644
--- a/sysdeps/unix/sysv/linux/bits/sem.h
+++ b/sysdeps/unix/sysv/linux/bits/sem.h
@@ -21,6 +21,7 @@
#include <sys/types.h>
#include <bits/sem-pad.h>
+#include <bits/types/struct_semid_ds.h>
/* Flags for `semop'. */
#define SEM_UNDO 0x1000 /* undo the operation on exit */
@@ -34,29 +35,6 @@
#define SETVAL 16 /* set semval */
#define SETALL 17 /* set all semval's */
-
-#if __SEM_PAD_BEFORE_TIME
-# define __SEM_PAD_TIME(NAME, RES) \
- __syscall_ulong_t __glibc_reserved ## RES; __time_t NAME
-#elif __SEM_PAD_AFTER_TIME
-# define __SEM_PAD_TIME(NAME, RES) \
- __time_t NAME; __syscall_ulong_t __glibc_reserved ## RES
-#else
-# define __SEM_PAD_TIME(NAME, RES) \
- __time_t NAME
-#endif
-
-/* Data structure describing a set of semaphores. */
-struct semid_ds
-{
- struct ipc_perm sem_perm; /* operation permission struct */
- __SEM_PAD_TIME (sem_otime, 1); /* last semop() time */
- __SEM_PAD_TIME (sem_ctime, 2); /* last time changed by semctl() */
- __syscall_ulong_t sem_nsems; /* number of semaphores in set */
- __syscall_ulong_t __glibc_reserved3;
- __syscall_ulong_t __glibc_reserved4;
-};
-
/* The user should define a union like the following to use it for arguments
for `semctl'.
diff --git a/sysdeps/unix/sysv/linux/bits/types/struct_semid_ds.h b/sysdeps/unix/sysv/linux/bits/types/struct_semid_ds.h
new file mode 100644
index 0000000000..0e136961d5
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/bits/types/struct_semid_ds.h
@@ -0,0 +1,43 @@
+/* Generic implementation of the semaphore struct semid_ds.
+ Copyright (C) 1995-2020 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
+ <https://www.gnu.org/licenses/>. */
+
+#ifndef _SYS_SEM_H
+# error "Never include <bits/types/struct_semid_ds.h> directly; use <sys/sem.h> instead."
+#endif
+
+#if __SEM_PAD_BEFORE_TIME
+# define __SEM_PAD_TIME(NAME, RES) \
+ __syscall_ulong_t __glibc_reserved ## RES; __time_t NAME
+#elif __SEM_PAD_AFTER_TIME
+# define __SEM_PAD_TIME(NAME, RES) \
+ __time_t NAME; __syscall_ulong_t __glibc_reserved ## RES
+#else
+# define __SEM_PAD_TIME(NAME, RES) \
+ __time_t NAME
+#endif
+
+/* Data structure describing a set of semaphores. */
+struct semid_ds
+{
+ struct ipc_perm sem_perm; /* operation permission struct */
+ __SEM_PAD_TIME (sem_otime, 1); /* last semop() time */
+ __SEM_PAD_TIME (sem_ctime, 2); /* last time changed by semctl() */
+ __syscall_ulong_t sem_nsems; /* number of semaphores in set */
+ __syscall_ulong_t __glibc_reserved3;
+ __syscall_ulong_t __glibc_reserved4;
+};
--
2.26.2
next prev parent reply other threads:[~2020-04-28 22:13 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-28 22:05 [PATCH v6 0/3] Support y2038 semctl_syscall() Alistair Francis
2020-04-28 22:05 ` Alistair Francis [this message]
2020-04-28 22:05 ` [PATCH v6 2/3] semctl: Remove the sem-pad.h file Alistair Francis
2020-04-28 22:05 ` [PATCH v6 3/3] sysv: linux: Pass 64-bit version of semctl syscall Alistair Francis
2020-04-29 21:09 ` Adhemerval Zanella
2020-04-29 23:24 ` Alistair Francis
2020-04-30 15:06 ` Adhemerval Zanella
2020-04-30 21:25 ` Alistair Francis
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