Copyright (C) 2001 Chad David <davidc@acns.ab.ca>. All rights reserved.

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$FreeBSD$

.Dd November 21, 2001 .Dt VFS_GETVFS 9 .Os .Sh NAME .Nm vfs_getvfs .Nd "returns a mount point given its file system identifier" .Sh SYNOPSIS n sys/param.h n sys/mount.h .Ft "struct mount *" .Fn vfs_getvfs "fsid_t *fsid" .Sh DESCRIPTION The .Fn vfs_getvfs function returns the mount point structure for a file system given its file system identifier. The file system ID should have been allocated by calling .Xr vfs_getnewfsid 9 ; otherwise, it will not be found.

p A major user of .Fn vfs_getvfs is NFS, which uses the .Vt fsid as part of file handles in order to determine the file system a given RPC is for. If .Fn vfs_getvfs fails to find the mount point related to .Fa fsid , the file system is considered stale. .Sh RETURN VALUES If .Fa fsid is found, the mount point for the ID is returned; otherwise, .Dv NULL is returned. .Sh PSEUDOCODE d -literal if ((mp = vfs_getvfs(&fhp->fh_fsid)) == NULL) { error = ESTALE; goto out; } .Ed .Sh SEE ALSO .Xr vfs_getnewfsid 9 .Sh AUTHORS This manual page was written by .An Chad David Aq davidc@acns.ab.ca .