vfs_suser(9)
check if credentials have superuser privileges for a mount point
SYNOPSIS
In sys/param.h
In sys/systm.h
In sys/mount.h
Ft int
Fn vfs_suser struct mount *mp struct thread *td
DESCRIPTION
The
Fn 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
priv_check9
would have returned.
RETURN VALUES
The
Fn 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
Fn suser
in which a TRUE response indicates superuser powers.
HISTORY
The
Fn vfs_suser
function was introduced in
Fx 5.2 .
AUTHORS
This manual page was written by
An Alfred Perlstein .
