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xtensa
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shmbuf.h

shmbuf.h 1.5 KB
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  1. /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
    2. 

  2. /*
    3. 

  3.  * include/asm-xtensa/shmbuf.h
    4. 

  4.  *
    5. 

  5.  * The shmid64_ds structure for Xtensa architecture.
    6. 

  6.  * Note extra padding because this structure is passed back and forth
    7. 

  7.  * between kernel and user space, but the padding is on the wrong
    8. 

  8.  * side for big-endian xtensa, for historic reasons.
    9. 

  9.  *
    10. 

  10.  * Pad space is left for:
    11. 

  11.  * - 2 miscellaneous 32-bit values
    12. 

  12.  *
    13. 

  13.  * This file is subject to the terms and conditions of the GNU General Public
    14. 

  14.  * License.  See the file "COPYING" in the main directory of this archive
    15. 

  15.  * for more details.
    16. 

  16.  *
    17. 

  17.  * Copyright (C) 2001 - 2005 Tensilica Inc.
    18. 

  18.  */
    19. 

  19. 

  20. #ifndef _XTENSA_SHMBUF_H
    21. 

  21. #define _XTENSA_SHMBUF_H
    22. 

  22. 

  23. struct shmid64_ds {
    24. 

  24. 	struct ipc64_perm	shm_perm;	/* operation perms */
    25. 

  25. 	size_t			shm_segsz;	/* size of segment (bytes) */
    26. 

  26. 	unsigned long		shm_atime;	/* last attach time */
    27. 

  27. 	unsigned long		shm_atime_high;
    28. 

  28. 	unsigned long		shm_dtime;	/* last detach time */
    29. 

  29. 	unsigned long		shm_dtime_high;
    30. 

  30. 	unsigned long		shm_ctime;	/* last change time */
    31. 

  31. 	unsigned long		shm_ctime_high;
    32. 

  32. 	__kernel_pid_t		shm_cpid;	/* pid of creator */
    33. 

  33. 	__kernel_pid_t		shm_lpid;	/* pid of last operator */
    34. 

  34. 	unsigned long		shm_nattch;	/* no. of current attaches */
    35. 

  35. 	unsigned long		__unused4;
    36. 

  36. 	unsigned long		__unused5;
    37. 

  37. };
    38. 

  38. 

  39. struct shminfo64 {
    40. 

  40. 	unsigned long	shmmax;
    41. 

  41. 	unsigned long	shmmin;
    42. 

  42. 	unsigned long	shmmni;
    43. 

  43. 	unsigned long	shmseg;
    44. 

  44. 	unsigned long	shmall;
    45. 

  45. 	unsigned long	__unused1;
    46. 

  46. 	unsigned long	__unused2;
    47. 

  47. 	unsigned long	__unused3;
    48. 

  48. 	unsigned long	__unused4;
    49. 

  49. };
    50. 

  50. 

  51. #endif	/* _XTENSA_SHMBUF_H */
    52.