vfs_suser
- check if credentials have superuser privileges for a mount point
SYNOPSIS
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/mount.h> int
vfs_suser (struct mount *mp struct thread *td);
DESCRIPTION
The
vfs_suser ();
function checks if the credentials given include superuser powers
for the given mount point.
It will check to see if the thread
passed in has the same credentials as the user that mounted the
file system.
If so, it returns 0, otherwise it returns what
suser(9)
would have returned.
RETURN VALUES
The
vfs_suser ();
function returns 0 if the user has superuser powers and
Er EPERM
otherwise.
This is the
reverse logic
of some other implementations of
suser ();
in which a TRUE response indicates superuser powers.
