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author | Joseph Myers <joseph@codesourcery.com> | 2018-10-17 11:56:28 +0000 |
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committer | Joseph Myers <joseph@codesourcery.com> | 2018-10-17 11:56:28 +0000 |
commit | 729f34028a7f494b599a29889df825cf826b6de0 (patch) | |
tree | 240e9b7f62d704af1e262f1223bec5c077b5790c /sysdeps/unix/sysv/linux/mips/bits/shm.h | |
parent | 8c8d2a8aff71e0c53b372871f158c121289452cf (diff) | |
download | glibc-729f34028a7f494b599a29889df825cf826b6de0.zip glibc-729f34028a7f494b599a29889df825cf826b6de0.tar.gz glibc-729f34028a7f494b599a29889df825cf826b6de0.tar.bz2 |
Use single bits/shm.h for all architectures.
After my patch to move SHMLBA to its own header, the bits/shm.h
headers for architectures using the Linux kernel still vary in a few
ways: the use of __syscall_ulong_t; whether padding for 32-bit systems
is present before or after time fields, or missing altogether (mips,
x32); whether shm_segsz is before or after the time fields; whether,
if after time fields, there is extra padding before shm_segsz.
This patch arranges for a single header to be used. __syscall_ulong_t
is safe to use everywhere, while bits/shm-pad.h is added with new
macros __SHM_PAD_AFTER_TIME, __SHM_PAD_BEFORE_TIME,
__SHM_SEGSZ_AFTER_TIME and __SHM_PAD_BETWEEN_TIME_AND_SEGSZ to
describe the differences.
Tested for x86_64 and x86, and with build-many-glibcs.py.
* sysdeps/unix/sysv/linux/Makefile (sysdep_headers): Add
bits/shm-pad.h.
* sysdeps/unix/sysv/linux/bits/shm.h: Include <bits/shm-pad.h>.
(shmatt_t): Define as __syscall_ulong_t.
(__SHM_PAD_TIME): New macro, depending on [__SHM_PAD_BEFORE_TIME]
and [__SHM_PAD_AFTER_TIME].
(struct shmid_ds): Define time fields using __SHM_PAD_TIME.
Define shm_segsz and associated padding based on
[__SHM_SEGSZ_AFTER_TIME] and [__SHM_PAD_BETWEEN_TIME_AND_SEGSZ].
Use __syscall_ulong_t instead of unsigned long int.
[__USE_MISC] (struct shminfo): Use __syscall_ulong_t instead of
unsigned long int.
[__USE_MISC] (struct shm_info): Likewise.
* sysdeps/unix/sysv/linux/bits/shm-pad.h: New file.
* sysdeps/unix/sysv/linux/hppa/bits/shm-pad.h: Likewise.
* sysdeps/unix/sysv/linux/mips/bits/shm-pad.h: Likewise.
* sysdeps/unix/sysv/linux/powerpc/bits/shm-pad.h: Likewise.
* sysdeps/unix/sysv/linux/sparc/bits/shm-pad.h: Likewise.
* sysdeps/unix/sysv/linux/x86/bits/shm-pad.h: Likewise.
* sysdeps/unix/sysv/linux/hppa/bits/shm.h: Remove.
* sysdeps/unix/sysv/linux/mips/bits/shm.h: Likewise.
* sysdeps/unix/sysv/linux/powerpc/bits/shm.h: Likewise.
* sysdeps/unix/sysv/linux/sparc/bits/shm.h: Likewise.
* sysdeps/unix/sysv/linux/x86/bits/shm.h: Likewise.
Diffstat (limited to 'sysdeps/unix/sysv/linux/mips/bits/shm.h')
-rw-r--r-- | sysdeps/unix/sysv/linux/mips/bits/shm.h | 94 |
1 files changed, 0 insertions, 94 deletions
diff --git a/sysdeps/unix/sysv/linux/mips/bits/shm.h b/sysdeps/unix/sysv/linux/mips/bits/shm.h deleted file mode 100644 index 4320bd4..0000000 --- a/sysdeps/unix/sysv/linux/mips/bits/shm.h +++ /dev/null @@ -1,94 +0,0 @@ -/* Copyright (C) 1995-2018 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 _SYS_SHM_H -# error "Never include <bits/shm.h> directly; use <sys/shm.h> instead." -#endif - -#include <bits/types.h> -#include <bits/shmlba.h> - -/* Permission flag for shmget. */ -#define SHM_R 0400 /* or S_IRUGO from <linux/stat.h> */ -#define SHM_W 0200 /* or S_IWUGO from <linux/stat.h> */ - -/* Flags for `shmat'. */ -#define SHM_RDONLY 010000 /* attach read-only else read-write */ -#define SHM_RND 020000 /* round attach address to SHMLBA */ -#define SHM_REMAP 040000 /* take-over region on attach */ -#define SHM_EXEC 0100000 /* execution access */ - -/* Commands for `shmctl'. */ -#define SHM_LOCK 11 /* lock segment (root only) */ -#define SHM_UNLOCK 12 /* unlock segment (root only) */ - - -/* Type to count number of attaches. */ -typedef unsigned long int shmatt_t; - -/* Data structure describing a shared memory segment. */ -struct shmid_ds - { - struct ipc_perm shm_perm; /* operation permission struct */ - size_t shm_segsz; /* size of segment in bytes */ - __time_t shm_atime; /* time of last shmat() */ - __time_t shm_dtime; /* time of last shmdt() */ - __time_t shm_ctime; /* time of last change by shmctl() */ - __pid_t shm_cpid; /* pid of creator */ - __pid_t shm_lpid; /* pid of last shmop */ - shmatt_t shm_nattch; /* number of current attaches */ - unsigned long int __glibc_reserved1; - unsigned long int __glibc_reserved2; - }; - -#ifdef __USE_MISC - -/* ipcs ctl commands */ -# define SHM_STAT 13 -# define SHM_INFO 14 -# define SHM_STAT_ANY 15 - -/* shm_mode upper byte flags */ -# define SHM_DEST 01000 /* segment will be destroyed on last detach */ -# define SHM_LOCKED 02000 /* segment will not be swapped */ -# define SHM_HUGETLB 04000 /* segment is mapped via hugetlb */ -# define SHM_NORESERVE 010000 /* don't check for reservations */ - -struct shminfo - { - unsigned long int shmmax; - unsigned long int shmmin; - unsigned long int shmmni; - unsigned long int shmseg; - unsigned long int shmall; - unsigned long int __glibc_reserved1; - unsigned long int __glibc_reserved2; - unsigned long int __glibc_reserved3; - unsigned long int __glibc_reserved4; - }; - -struct shm_info - { - int used_ids; - unsigned long int shm_tot; /* total allocated shm */ - unsigned long int shm_rss; /* total resident shm */ - unsigned long int shm_swp; /* total swapped shm */ - unsigned long int swap_attempts; - unsigned long int swap_successes; - }; - -#endif /* __USE_MISC */ |