diff options
| -rw-r--r-- | include/features.h | 1 | ||||
| -rw-r--r-- | include/sys/ipc.h | 38 | ||||
| -rw-r--r-- | include/sys/shm.h | 56 | ||||
| -rw-r--r-- | libc/sysdeps/linux/i386/bits/ipc.h | 50 | ||||
| -rw-r--r-- | libc/sysdeps/linux/i386/bits/shm.h | 84 |
5 files changed, 229 insertions, 0 deletions
diff --git a/include/features.h b/include/features.h index dd2c5ae03..bc80fc541 100644 --- a/include/features.h +++ b/include/features.h @@ -52,6 +52,7 @@ #define __USE_MISC #define __USE_POSIX #define __USE_POSIX2 +#define __USE_XOPEN #define _POSIX_THREAD_SAFE_FUNCTIONS diff --git a/include/sys/ipc.h b/include/sys/ipc.h new file mode 100644 index 000000000..f1ba7ff18 --- /dev/null +++ b/include/sys/ipc.h @@ -0,0 +1,38 @@ +/* Copyright (C) 1995, 1996, 1997 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 Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#ifndef _SYS_IPC_H +#define _SYS_IPC_H 1 + +#include <features.h> + +/* Get system dependent definition of `struct ipc_perm' and more. */ +#include <bits/ipc.h> + +#if !defined __USE_SVID && !defined __USE_XOPEN && __GNUC__ >= 2 +# warning "Files using this header must be compiled with _SVID_SOURCE or _XOPEN_SOURCE" +#endif + +__BEGIN_DECLS + +/* Generates key for System V style IPC. */ +extern key_t ftok __P ((__const char *__pathname, int __proj_id)); + +__END_DECLS + +#endif /* sys/ipc.h */ diff --git a/include/sys/shm.h b/include/sys/shm.h new file mode 100644 index 000000000..09e21d60e --- /dev/null +++ b/include/sys/shm.h @@ -0,0 +1,56 @@ +/* Copyright (C) 1995, 1996, 1997, 1998, 1999 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 Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#ifndef _SYS_SHM_H +#define _SYS_SHM_H 1 + +#include <features.h> + +#include <unistd.h> /* for `getpagesize' declaration */ +#include <sys/types.h> + +/* Get common definition of System V style IPC. */ +#include <sys/ipc.h> + +/* Get system dependent definition of `struct shmid_ds' and more. */ +#include <bits/shm.h> + + +/* Segment low boundary address multiple. */ +#define SHMLBA (getpagesize ()) + +/* The following System V style IPC functions implement a shared memory + facility. The definition is found in XPG4.2. */ + +__BEGIN_DECLS + +/* Shared memory control operation. */ +extern int shmctl __P ((int __shmid, int __cmd, struct shmid_ds *__buf)); + +/* Get shared memory segment. */ +extern int shmget __P ((key_t __key, size_t __size, int __shmflg)); + +/* Attach shared memory segment. */ +extern void *shmat __P ((int __shmid, __const void *__shmaddr, int __shmflg)); + +/* Detach shared memory segment. */ +extern int shmdt __P ((__const void *__shmaddr)); + +__END_DECLS + +#endif /* sys/shm.h */ diff --git a/libc/sysdeps/linux/i386/bits/ipc.h b/libc/sysdeps/linux/i386/bits/ipc.h new file mode 100644 index 000000000..c4e37358e --- /dev/null +++ b/libc/sysdeps/linux/i386/bits/ipc.h @@ -0,0 +1,50 @@ +/* Copyright (C) 1995, 1996, 1997, 1998 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 Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#ifndef _SYS_IPC_H +# error "Never use <bits/ipc.h> directly; include <sys/ipc.h> instead." +#endif + +#include <sys/types.h> + +/* Mode bits for `msgget', `semget', and `shmget'. */ +#define IPC_CREAT 01000 /* Create key if key does not exist. */ +#define IPC_EXCL 02000 /* Fail if key exists. */ +#define IPC_NOWAIT 04000 /* Return error on wait. */ + +/* Control commands for `msgctl', `semctl', and `shmctl'. */ +#define IPC_RMID 0 /* Remove identifier. */ +#define IPC_SET 1 /* Set `ipc_perm' options. */ +#define IPC_STAT 2 /* Get `ipc_perm' options. */ +#define IPC_INFO 3 /* See ipcs. */ + +/* Special key values. */ +#define IPC_PRIVATE ((__key_t) 0) /* Private key. */ + + +/* Data structure used to pass permission information to IPC operations. */ +struct ipc_perm + { + __key_t __key; /* Key. */ + unsigned short int uid; /* Owner's user ID. */ + unsigned short int gid; /* Owner's group ID. */ + unsigned short int cuid; /* Creator's user ID. */ + unsigned short int cgid; /* Creator's group ID. */ + unsigned short int mode; /* Read/write permission. */ + unsigned short int __seq; /* Sequence number. */ + }; diff --git a/libc/sysdeps/linux/i386/bits/shm.h b/libc/sysdeps/linux/i386/bits/shm.h new file mode 100644 index 000000000..c7070595b --- /dev/null +++ b/libc/sysdeps/linux/i386/bits/shm.h @@ -0,0 +1,84 @@ +/* Copyright (C) 1995, 1996, 1997 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 Library General Public License as + published by the Free Software Foundation; either version 2 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 + Library General Public License for more details. + + You should have received a copy of the GNU Library General Public + License along with the GNU C Library; see the file COPYING.LIB. If not, + write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, + Boston, MA 02111-1307, USA. */ + +#ifndef _SYS_SHM_H +# error "Never include <bits/shm.h> directly; use <sys/shm.h> instead." +#endif + +#include <sys/types.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 */ + +/* Commands for `shmctl'. */ +#define SHM_LOCK 11 /* lock segment (root only) */ +#define SHM_UNLOCK 12 /* unlock segment (root only) */ + + +/* Data structure describing a set of semaphores. */ +struct shmid_ds + { + struct ipc_perm shm_perm; /* operation permission struct */ + int 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() */ + __ipc_pid_t shm_cpid; /* pid of creator */ + __ipc_pid_t shm_lpid; /* pid of last shmop */ + unsigned short int shm_nattch; /* number of current attaches */ + unsigned short int __shm_npages; /* size of segment (pages) */ + unsigned long int *__shm_pages; /* array of ptrs to frames -> SHMMAX */ + struct vm_area_struct *__attaches; /* descriptors for attaches */ + }; + +#ifdef __USE_MISC + +/* ipcs ctl commands */ +# define SHM_STAT 13 +# define SHM_INFO 14 + +/* 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 */ + +struct shminfo + { + int shmmax; + int shmmin; + int shmmni; + int shmseg; + int shmall; + }; + +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 */ |