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      1 /****************************************************************************
      2  ****************************************************************************
      3  ***
      4  ***   This header was automatically generated from a Linux kernel header
      5  ***   of the same name, to make information necessary for userspace to
      6  ***   call into the kernel available to libc.  It contains only constants,
      7  ***   structures, and macros generated from the original header, and thus,
      8  ***   contains no copyrightable information.
      9  ***
     10  ***   To edit the content of this header, modify the corresponding
     11  ***   source file (e.g. under external/kernel-headers/original/) then
     12  ***   run bionic/libc/kernel/tools/update_all.py
     13  ***
     14  ***   Any manual change here will be lost the next time this script will
     15  ***   be run. You've been warned!
     16  ***
     17  ****************************************************************************
     18  ****************************************************************************/
     19 #ifndef _UAPI_LINUX_SHM_H_
     20 #define _UAPI_LINUX_SHM_H_
     21 #include <linux/ipc.h>
     22 #include <linux/errno.h>
     23 #include <unistd.h>
     24 #define SHMMIN 1
     25 #define SHMMNI 4096
     26 #define SHMMAX (ULONG_MAX - (1UL << 24))
     27 #define SHMALL (ULONG_MAX - (1UL << 24))
     28 #define SHMSEG SHMMNI
     29 struct __kernel_legacy_shmid_ds {
     30   struct __kernel_legacy_ipc_perm shm_perm;
     31   int shm_segsz;
     32   __kernel_time_t shm_atime;
     33   __kernel_time_t shm_dtime;
     34   __kernel_time_t shm_ctime;
     35   __kernel_ipc_pid_t shm_cpid;
     36   __kernel_ipc_pid_t shm_lpid;
     37   unsigned short shm_nattch;
     38   unsigned short shm_unused;
     39   void * shm_unused2;
     40   void * shm_unused3;
     41 };
     42 #include <asm/shmbuf.h>
     43 #define SHM_R 0400
     44 #define SHM_W 0200
     45 #define SHM_RDONLY 010000
     46 #define SHM_RND 020000
     47 #define SHM_REMAP 040000
     48 #define SHM_EXEC 0100000
     49 #define SHM_LOCK 11
     50 #define SHM_UNLOCK 12
     51 #define SHM_STAT 13
     52 #define SHM_INFO 14
     53 struct shminfo {
     54   int shmmax;
     55   int shmmin;
     56   int shmmni;
     57   int shmseg;
     58   int shmall;
     59 };
     60 struct shm_info {
     61   int used_ids;
     62   __kernel_ulong_t shm_tot;
     63   __kernel_ulong_t shm_rss;
     64   __kernel_ulong_t shm_swp;
     65   __kernel_ulong_t swap_attempts;
     66   __kernel_ulong_t swap_successes;
     67 };
     68 #endif
     69