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xfs
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xfs_acl.h

xfs_acl.h 2.2 KB
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  1. /*
    2. 

  2.  * Copyright (c) 2001-2005 Silicon Graphics, Inc.
    3. 

  3.  * All Rights Reserved.
    4. 

  4.  *
    5. 

  5.  * This program is free software; you can redistribute it and/or
    6. 

  6.  * modify it under the terms of the GNU General Public License as
    7. 

  7.  * published by the Free Software Foundation.
    8. 

  8.  *
    9. 

  9.  * This program is distributed in the hope that it would be useful,
    10. 

  10.  * but WITHOUT ANY WARRANTY; without even the implied warranty of
    11. 

  11.  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    12. 

  12.  * GNU General Public License for more details.
    13. 

  13.  *
    14. 

  14.  * You should have received a copy of the GNU General Public License
    15. 

  15.  * along with this program; if not, write the Free Software Foundation,
    16. 

  16.  * Inc.,  51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
    17. 

  17.  */
    18. 

  18. #ifndef __XFS_ACL_H__
    19. 

  19. #define __XFS_ACL_H__
    20. 

  20. 

  21. struct inode;
    22. 

  22. struct posix_acl;
    23. 

  23. struct xfs_inode;
    24. 

  24. 

  25. #define XFS_ACL_MAX_ENTRIES 25
    26. 

  26. #define XFS_ACL_NOT_PRESENT (-1)
    27. 

  27. 

  28. /* On-disk XFS access control list structure */
    29. 

  29. struct xfs_acl {
    30. 

  30. 	__be32		acl_cnt;
    31. 

  31. 	struct xfs_acl_entry {
    32. 

  32. 		__be32	ae_tag;
    33. 

  33. 		__be32	ae_id;
    34. 

  34. 		__be16	ae_perm;
    35. 

  35. 	} acl_entry[XFS_ACL_MAX_ENTRIES];
    36. 

  36. };
    37. 

  37. 

  38. /* On-disk XFS extended attribute names */
    39. 

  39. #define SGI_ACL_FILE		(unsigned char *)"SGI_ACL_FILE"
    40. 

  40. #define SGI_ACL_DEFAULT		(unsigned char *)"SGI_ACL_DEFAULT"
    41. 

  41. #define SGI_ACL_FILE_SIZE	(sizeof(SGI_ACL_FILE)-1)
    42. 

  42. #define SGI_ACL_DEFAULT_SIZE	(sizeof(SGI_ACL_DEFAULT)-1)
    43. 

  43. 

  44. #ifdef CONFIG_XFS_POSIX_ACL
    45. 

  45. extern int xfs_check_acl(struct inode *inode, int mask, unsigned int flags);
    46. 

  46. extern struct posix_acl *xfs_get_acl(struct inode *inode, int type);
    47. 

  47. extern int xfs_inherit_acl(struct inode *inode, struct posix_acl *default_acl);
    48. 

  48. extern int xfs_acl_chmod(struct inode *inode);
    49. 

  49. extern int posix_acl_access_exists(struct inode *inode);
    50. 

  50. extern int posix_acl_default_exists(struct inode *inode);
    51. 

  51. 

  52. extern const struct xattr_handler xfs_xattr_acl_access_handler;
    53. 

  53. extern const struct xattr_handler xfs_xattr_acl_default_handler;
    54. 

  54. #else
    55. 

  55. # define xfs_check_acl					NULL
    56. 

  56. # define xfs_get_acl(inode, type)			NULL
    57. 

  57. # define xfs_inherit_acl(inode, default_acl)		0
    58. 

  58. # define xfs_acl_chmod(inode)				0
    59. 

  59. # define posix_acl_access_exists(inode)			0
    60. 

  60. # define posix_acl_default_exists(inode)		0
    61. 

  61. #endif /* CONFIG_XFS_POSIX_ACL */
    62. 

  62. #endif	/* __XFS_ACL_H__ */
    63. 

  63.