Партнёры:
Хостинг:
suser suser_cred - check if credentials have superuser privileges
These interfaces have now been obsoleted by priv(9), and are provided only for compatibility with third party kernel modules that have not yet been updated to the new interface. They should not be used in any new kernel code.
The
suser ();
function is the most common, and should be used unless special
circumstances dictate otherwise.
The
suser_cred ();
function should be used when the credentials to be checked are
not the thread's own, when there is no thread, when superuser
powers should be extended to imprisoned roots, or when the credential
to be checked is the real user rather than the effective user.
Whether or not a privilege is permitted in a
jail(8)
depends on logic in
prison_priv_check (.);
In general, privileges are assigned based on the effective user ID; in some cases, the real user ID may be used.
The Fa flags field is currently unused.
The
suser ();
and
suser_cred ();
functions note the fact that superuser powers have been used in the
process structure of the process specified.
Because part of their function is to notice
whether superuser powers have been used,
the functions should only be called after other permission
possibilities have been exhausted.
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