FreeBSD 7.0 manual page repository

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VFS_FHTOVP - turn an NFS filehandle into a vnode



      VFS_FHTOVP - turn an NFS filehandle into a vnode


      #include <sys/param.h>
      #include <sys/mount.h>
      #include <sys/vnode.h>
      VFS_FHTOVP(struct mount *mp, struct fid *fhp, struct vnode **vpp);


      The VFS_FHTOVP() macro is used by the NFS server to turn an NFS filehanā€
      dle into a vnode.
      The arguments it expects are:
      mp   The file system.
      fhp  The filehandle to convert.
      vpp  Return parameter for the new locked vnode.
      The contents of the filehandle are defined by the file system and are not
      examined by any other part of the system.  It should contain enough
      information to uniquely identify a file within the file system as well as
      noticing when a file has been removed and the file system resources have
      been reused for a new file.  For instance, UFS file system stores the
      inode number and inode generation counter in its filehandle.
      A call to VFS_FHTOVP() should generally be preceded by a call to
      VFS_CHECKEXP(9) to check if the file is accessible to the client.
      The locked vnode for the file will be returned in *vpp.
      VFS(9), VFS_CHECKEXP(9), VFS_VPTOFH(9), vnode(9)


      This manual page was written by Doug Rabson.


Based on BSD UNIX
FreeBSD is an advanced operating system for x86 compatible (including Pentium and Athlon), amd64 compatible (including Opteron, Athlon64, and EM64T), UltraSPARC, IA-64, PC-98 and ARM architectures. It is derived from BSD, the version of UNIX developed at the University of California, Berkeley. It is developed and maintained by a large team of individuals. Additional platforms are in various stages of development.