VFS_MOUNT(9)

VFS_MOUNT9

Mount a file system

Usage

#include <sys/param.h>

#include <sys/mount.h>

#include <sys/vnode.h>

int

VFS_MOUNT(struct mount *mp);

Overview

The VFS_MOUNT() macro mounts a file system into the system's namespace or updates the attributes of an already mounted file system.

The arguments it expects are:

mp

Structure representing the file system.

The VFS_MOUNT() macro is called both to mount new file systems and to change the attributes of an existing file system. If the MNT_UPDATE flag is set in mp->mnt_flag then the file system should update its internal state from the value of mp->mnt_flag. This can be used, for instance, to convert a read-only file system to read-write. It is also used by mountd(8) to update the NFS export information for the file system.

If the MNT_UPDATE flag is not specified, then this is a newly mounted file system. The file system code should allocate and initialize any private data needed to represent the file system (it can use the mp->mnt_data field to store this information).

Releases

83 releases since FreeBSD 2.2.2-RELEASE; the text changed 43 times.

  1. 2.2.2–2.2.5
  2. 2.2.6–2.2.8
  3. 2.2.9
  4. 3.0–3.2
  5. 3.3–3.4
  6. 3.5–3.5.1
  7. 4.0–4.4
  8. 4.5–4.11
  9. 5.0–5.1
  10. 5.2–5.3
  11. 5.4–5.5
  12. 6.0–6.3
  13. 6.4
  14. 7.0
  15. 7.1
  16. 7.2
  17. 7.3
  18. 7.4
  19. 8.0
  20. 8.1
  21. 8.2
  22. 8.3
  23. 8.4
  24. 9.0
  25. 9.1
  26. 9.2
  27. 9.3
  28. 10.0
  29. 10.1
  30. 10.2
  31. 10.3
  32. 10.4
  33. 11.0
  34. 11.1
  35. 11.2
  36. 11.3
  37. 11.4
  38. 12.0
  39. 12.1
  40. 12.2
  41. 12.3
  42. 12.4
  43. 13.0–13.2
  44. 13.3–16.0

Authors

This manual page was written by Doug Rabson.

From base 16.0-CURRENT-20261027-61c70dc16a79 in FreeBSD 16.0-CURRENT (2026-10-27). Parsed by carta from the page's mdoc source.