| /* 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> |
| |
| /* 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 sem_perm; /* operation permission struct */ |
| int shm_segsz; /* size of segment in bytes */ |
| __time_t sem_atime; /* time of last shmat() */ |
| __time_t sem_dtime; /* time of last shmdt() */ |
| __time_t sem_ctime; /* time of last change by shmctl() */ |
| __pid_t shm_cpid; /* pid of creator */ |
| __pid_t shm_lpid; /* pid of last shmop */ |
| unsigned short int shm_nattch; /* number of current attaches */ |
| }; |