The
vfs_getnewfsid()
function allocates a new file system identifier for the mount point given.
File systems typically call
vfs_getnewfsid()
in their mount routine in order to acquire a unique ID within the system
which can later be used to uniquely identify the file system via calls such as
vfs_getvfs(9).
The actual
fsid
is made up of two 32 bit integers, that are stored in the
statfs
structure of
mp.
The first integer is unique in the set of mounted file systems,
while the second holds the file system type.
typedef struct fsid {
int32_t val[2];
} fsid_t;
