| /* Copyright (C) 1995,1996,1997,2000,2001,2002,2003 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, 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 <bits/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) */ |
| |
| /* Segment low boundary address multiple. */ |
| #define SHMLBA 0x40000 |
| |
| |
| /* Type to count number of attaches. */ |
| typedef unsigned long int shmatt_t; |
| |
| /* Data structure describing a set of semaphores. */ |
| 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 __unused1; |
| unsigned long int __unused2; |
| }; |
| |
| #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 */ |
| # define SHM_HUGETLB 04000 /* segment is mapped via hugetlb */ |
| |
| 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 __unused1; |
| unsigned long int __unused2; |
| unsigned long int __unused3; |
| unsigned long int __unused4; |
| }; |
| |
| 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 */ |