Tribblix: manual page: ct_tmpl

CT_TMPL_ACTIVATE(3CONTRACT) Contract Management Library Functions

NAME

ct_tmpl_activate, ct_tmpl_clear, ct_tmpl_create, ct_tmpl_set_cookie,
ct_tmpl_set_critical, ct_tmpl_set_informative, ct_tmpl_get_cookie,
ct_tmpl_get_critical, ct_tmpl_get_informative - common contract
template functions

SYNOPSIS

cc [ flag... ] file... -D_LARGEFILE64_SOURCE -lcontract [ library... ]
#include <libcontract.h>

int ct_tmpl_activate(int fd);

int ct_tmpl_clear(int fd);

int ct_tmpl_create(int fd, ctid_t *idp);

int ct_tmpl_set_cookie(int fd, uint64_t cookie);

int ct_tmpl_set_critical(int fd, uint_t events);

int ct_tmpl_set_informative(int fd, uint_t events);

int ct_tmpl_get_cookie(int fd, uint64_t *cookiep);

int ct_tmpl_get_critical(int fd, uint_t *eventsp);

int ct_tmpl_get_informative(int fd, uint_t *eventsp);

DESCRIPTION

These functions operate on contract template file descriptors
obtained from the contract(5) file system.

The ct_tmpl_activate() function makes the template referenced by the
file descriptor fd the active template for the calling thread.

The ct_tmpl_clear() function clears calling thread's active template.

The ct_tmpl_create() function uses the template referenced by the
file descriptor fd to create a new contract. If successful, the ID of
the newly created contract is placed in *idp.

The ct_tmpl_set_cookie() and ct_tmpl_get_cookie() functions write and
read the cookie term of a contract template. The cookie term is
ignored by the system, except to include its value in a resulting
contract's status object. The default cookie term is 0.

The ct_tmpl_set_critical() and ct_tmpl_get_critical() functions write
and read the critical event set term. The value is a collection of
bits as described in the contract type's manual page.

The ct_tmpl_set_informative() and ct_tmpl_get_informative() functions
write and read the informative event set term. The value is a
collection of bits as described in the contract type's manual page.

RETURN VALUES

Upon successful completion, ct_tmpl_activate(), ct_tmpl_create(),
ct_tmpl_set_cookie(), ct_tmpl_get_cookie(), ct_tmpl_set_critical(),
ct_tmpl_get_critical(), ct_tmpl_set_informative(), and
ct_tmpl_get_informative() return 0. Otherwise, they return a non-
zero error value.

ERRORS

The ct_tmpl_create() function will fail if:

ERANGE
The terms specified in the template were unsatisfied at the
time of the call.

EAGAIN
The project.max-contracts resource control would have been
exceeded.

The ct_tmpl_set_critical() and ct_tmpl_set_informative() functions
will fail if:

EINVAL
An invalid event was specified.

The ct_tmpl_set_critical() function will fail if:

EPERM
One of the specified events was disallowed given other
contract terms (see contract(5)) and {PRIV_CONTRACT_EVENT}
was not in the effective set for the calling process.