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vfs_getvfs (9)

>> vfs_getvfs (9) ( FreeBSD man: Ядро )

BSD mandoc

NAME



vfs_getvfs

 - returns a mount point given its file system identifier

SYNOPSIS

#include <sys/param.h>
#include <sys/mount.h>
struct mount * vfs_getvfs (fsid_t *fsid);

DESCRIPTION

The 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 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 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] .

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Created 1996-2024 by Maxim Chirkov
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