zfs_znode.h 1.9 KB

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  1. /* SPDX-License-Identifier: GPL-2.0+ */
  2. /*
  3. * GRUB -- GRand Unified Bootloader
  4. * Copyright (C) 1999,2000,2001,2002,2003,2004 Free Software Foundation, Inc.
  5. */
  6. /*
  7. * Copyright 2010 Sun Microsystems, Inc. All rights reserved.
  8. * Use is subject to license terms.
  9. */
  10. #ifndef _SYS_FS_ZFS_ZNODE_H
  11. #define _SYS_FS_ZFS_ZNODE_H
  12. #include <zfs/zfs_acl.h>
  13. #define MASTER_NODE_OBJ 1
  14. #define ZFS_ROOT_OBJ "ROOT"
  15. #define ZPL_VERSION_STR "VERSION"
  16. #define ZFS_SA_ATTRS "SA_ATTRS"
  17. #define ZPL_VERSION 5ULL
  18. #define ZFS_DIRENT_OBJ(de) BF64_GET(de, 0, 48)
  19. /*
  20. * This is the persistent portion of the znode. It is stored
  21. * in the "bonus buffer" of the file. Short symbolic links
  22. * are also stored in the bonus buffer.
  23. */
  24. typedef struct znode_phys {
  25. uint64_t zp_atime[2]; /* 0 - last file access time */
  26. uint64_t zp_mtime[2]; /* 16 - last file modification time */
  27. uint64_t zp_ctime[2]; /* 32 - last file change time */
  28. uint64_t zp_crtime[2]; /* 48 - creation time */
  29. uint64_t zp_gen; /* 64 - generation (txg of creation) */
  30. uint64_t zp_mode; /* 72 - file mode bits */
  31. uint64_t zp_size; /* 80 - size of file */
  32. uint64_t zp_parent; /* 88 - directory parent (`..') */
  33. uint64_t zp_links; /* 96 - number of links to file */
  34. uint64_t zp_xattr; /* 104 - DMU object for xattrs */
  35. uint64_t zp_rdev; /* 112 - dev_t for VBLK & VCHR files */
  36. uint64_t zp_flags; /* 120 - persistent flags */
  37. uint64_t zp_uid; /* 128 - file owner */
  38. uint64_t zp_gid; /* 136 - owning group */
  39. uint64_t zp_pad[4]; /* 144 - future */
  40. zfs_znode_acl_t zp_acl; /* 176 - 263 ACL */
  41. /*
  42. * Data may pad out any remaining bytes in the znode buffer, eg:
  43. *
  44. * |<---------------------- dnode_phys (512) ------------------------>|
  45. * |<-- dnode (192) --->|<----------- "bonus" buffer (320) ---------->|
  46. * |<---- znode (264) ---->|<---- data (56) ---->|
  47. *
  48. * At present, we only use this space to store symbolic links.
  49. */
  50. } znode_phys_t;
  51. #endif /* _SYS_FS_ZFS_ZNODE_H */