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linux-vybrid_pu...
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fs
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gfs2
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quota.h

quota.h 1.5 KB
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  1. /*
    2. 

  2.  * Copyright (C) Sistina Software, Inc.  1997-2003 All rights reserved.
    3. 

  3.  * Copyright (C) 2004-2006 Red Hat, Inc.  All rights reserved.
    4. 

  4.  *
    5. 

  5.  * This copyrighted material is made available to anyone wishing to use,
    6. 

  6.  * modify, copy, or redistribute it subject to the terms and conditions
    7. 

  7.  * of the GNU General Public License version 2.
    8. 

  8.  */
    9. 

  9. 

  10. #ifndef __QUOTA_DOT_H__
    11. 

  11. #define __QUOTA_DOT_H__
    12. 

  12. 

  13. struct gfs2_inode;
    14. 

  14. struct gfs2_sbd;
    15. 

  15. 

  16. #define NO_QUOTA_CHANGE ((u32)-1)
    17. 

  17. 

  18. int gfs2_quota_hold(struct gfs2_inode *ip, u32 uid, u32 gid);
    19. 

  19. void gfs2_quota_unhold(struct gfs2_inode *ip);
    20. 

  20. 

  21. int gfs2_quota_lock(struct gfs2_inode *ip, u32 uid, u32 gid);
    22. 

  22. void gfs2_quota_unlock(struct gfs2_inode *ip);
    23. 

  23. 

  24. int gfs2_quota_check(struct gfs2_inode *ip, u32 uid, u32 gid);
    25. 

  25. void gfs2_quota_change(struct gfs2_inode *ip, s64 change,
    26. 

  26. 		       u32 uid, u32 gid);
    27. 

  27. 

  28. int gfs2_quota_sync(struct gfs2_sbd *sdp);
    29. 

  29. int gfs2_quota_refresh(struct gfs2_sbd *sdp, int user, u32 id);
    30. 

  30. 

  31. int gfs2_quota_init(struct gfs2_sbd *sdp);
    32. 

  32. void gfs2_quota_scan(struct gfs2_sbd *sdp);
    33. 

  33. void gfs2_quota_cleanup(struct gfs2_sbd *sdp);
    34. 

  34. 

  35. static inline int gfs2_quota_lock_check(struct gfs2_inode *ip)
    36. 

  36. {
    37. 

  37. 	struct gfs2_sbd *sdp = GFS2_SB(&ip->i_inode);
    38. 

  38. 	int ret;
    39. 

  39. 	if (sdp->sd_args.ar_quota == GFS2_QUOTA_OFF)
    40. 

  40. 		return 0;
    41. 

  41. 	ret = gfs2_quota_lock(ip, NO_QUOTA_CHANGE, NO_QUOTA_CHANGE);
    42. 

  42. 	if (ret)
    43. 

  43. 		return ret;
    44. 

  44. 	if (sdp->sd_args.ar_quota != GFS2_QUOTA_ON)
    45. 

  45. 		return 0;
    46. 

  46. 	ret = gfs2_quota_check(ip, ip->i_inode.i_uid, ip->i_inode.i_gid);
    47. 

  47. 	if (ret)
    48. 

  48. 		gfs2_quota_unlock(ip);
    49. 

  49. 	return ret;
    50. 

  50. }
    51. 

  51. 

  52. #endif /* __QUOTA_DOT_H__ */
    53.