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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 <asm-generic/hugetlb_encode.h>
     24 #include <unistd.h>
     25 #define SHMMIN 1
     26 #define SHMMNI 4096
     27 #define SHMMAX (ULONG_MAX - (1UL << 24))
     28 #define SHMALL (ULONG_MAX - (1UL << 24))
     29 #define SHMSEG SHMMNI
     30 struct __kernel_legacy_shmid_ds {
     31   struct __kernel_legacy_ipc_perm shm_perm;
     32   int shm_segsz;
     33   __kernel_time_t shm_atime;
     34   __kernel_time_t shm_dtime;
     35   __kernel_time_t shm_ctime;
     36   __kernel_ipc_pid_t shm_cpid;
     37   __kernel_ipc_pid_t shm_lpid;
     38   unsigned short shm_nattch;
     39   unsigned short shm_unused;
     40   void * shm_unused2;
     41   void * shm_unused3;
     42 };
     43 #include <asm/shmbuf.h>
     44 #define SHM_R 0400
     45 #define SHM_W 0200
     46 #define SHM_HUGETLB 04000
     47 #define SHM_NORESERVE 010000
     48 #define SHM_HUGE_SHIFT HUGETLB_FLAG_ENCODE_SHIFT
     49 #define SHM_HUGE_MASK HUGETLB_FLAG_ENCODE_MASK
     50 #define SHM_HUGE_64KB HUGETLB_FLAG_ENCODE_64KB
     51 #define SHM_HUGE_512KB HUGETLB_FLAG_ENCODE_512KB
     52 #define SHM_HUGE_1MB HUGETLB_FLAG_ENCODE_1MB
     53 #define SHM_HUGE_2MB HUGETLB_FLAG_ENCODE_2MB
     54 #define SHM_HUGE_8MB HUGETLB_FLAG_ENCODE_8MB
     55 #define SHM_HUGE_16MB HUGETLB_FLAG_ENCODE_16MB
     56 #define SHM_HUGE_256MB HUGETLB_FLAG_ENCODE_256MB
     57 #define SHM_HUGE_1GB HUGETLB_FLAG_ENCODE_1GB
     58 #define SHM_HUGE_2GB HUGETLB_FLAG_ENCODE_2GB
     59 #define SHM_HUGE_16GB HUGETLB_FLAG_ENCODE_16GB
     60 #define SHM_RDONLY 010000
     61 #define SHM_RND 020000
     62 #define SHM_REMAP 040000
     63 #define SHM_EXEC 0100000
     64 #define SHM_LOCK 11
     65 #define SHM_UNLOCK 12
     66 #define SHM_STAT 13
     67 #define SHM_INFO 14
     68 struct shminfo {
     69   int shmmax;
     70   int shmmin;
     71   int shmmni;
     72   int shmseg;
     73   int shmall;
     74 };
     75 struct shm_info {
     76   int used_ids;
     77   __kernel_ulong_t shm_tot;
     78   __kernel_ulong_t shm_rss;
     79   __kernel_ulong_t shm_swp;
     80   __kernel_ulong_t swap_attempts;
     81   __kernel_ulong_t swap_successes;
     82 };
     83 #endif
     84