vfs_getvfs(9) returns a mount point given its file system identifier

SYNOPSIS

In sys/param.h In sys/mount.h Ft struct mount * Fn vfs_getvfs fsid_t *fsid

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 vfs_getnewfsid9; otherwise, it will not be found.

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.

RETURN VALUES

If Fa fsid is found, the mount point for the ID is returned; otherwise, NULL is returned.

PSEUDOCODE

if ((mp = vfs_getvfs(&fhp->fh_fsid)) == NULL) {
        error = ESTALE;
        goto out;
}

AUTHORS

This manual page was written by An Chad David Aq [email protected] .