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ct_status_read(3contract)
Contract Management Library Functions ct_status_read(3CONTRACT)
NAME
ct_status_read, ct_status_free, ct_status_get_id, ct_status_get_zoneid,
ct_status_get_type, ct_status_get_state, ct_status_get_holder, ct_sta‐
tus_get_nevents, ct_status_get_ntime, ct_status_get_qtime, ct_sta‐
tus_get_nevid, ct_status_get_cookie, ct_status_get_informative, ct_sta‐
tus_get_critical - common contract status functions
SYNOPSIS
cc [ flag... ] file... -D_LARGEFILE64_SOURCE -lcontract [ library... ]
#include <libcontract.h>
int ct_status_read(int fd, int detail, ct_stathdl_t *stathdlp);
void ct_status_free(ct_stathdl_t stathdl);
ctid_t ct_status_get_id(ct_stathdl_t stathdl);
zoneid_t ct_status_get_zoneid(ct_stathdl_t stathdl);
char *ct_status_get_type(ct_stathdl_t stathdl);
uint_t ct_status_get_state(ct_stathdl_t stathdl);
pid_t ct_status_get_holder(ct_stathdl_t stathdl);
int ct_status_get_nevents(ct_stathdl_t stathdl);
int ct_status_get_ntime(ct_stathdl_t stathdl);
int ct_status_get_qtime(ct_stathdl_t stathdl);
ctevid_t ct_status_get_nevid(ct_stathdl_t stathdl);
uint64_t ct_status_get_cookie(ct_stathdl_t stathdl);
ctevid_t ct_status_get_informative(ct_stathdl_t stathdl);
uint_t ct_status_get_critical(ct_stathdl_t stathdl);
DESCRIPTION
These functions operate on contract status file descriptors obtained
from the contract(5) file system and status object handles returned by
ct_status_read().
The ct_status_read() function reads the contract's status and initial‐
izes the status object handle pointed to by stathdlp. After a success‐
ful call to ct_status_read(), the caller is responsible for calling
ct_status_free() on this status object handle when it has finished
using it. Because the amount of information available for a contract
might be large, the detail argument allows the caller to specify how
much information ct_status_read() should obtain. A value of CTD_COMMON
fetches only those data accessible by the functions on this manual
page. CTD_FIXED fetches CTD_COMMON data as well as fixed-size contract
type-specific data. CTD_ALL fetches CTD_FIXED data as well as variable
lengthed data, such as arrays. See the manual pages for contract type-
specific status accessor functions for information concerning which
data are fetched by CTD_FIXED and CTD_ALL.
The ct_status_free() function frees any storage associated with the
specified status object handle.
The remaining functions all return contract information obtained from a
status object.
The ct_status_get_id() function returns the contract's ID.
The ct_status_get_zoneid() function returns the contract's creator's
zone ID, or −1 if the creator's zone no longer exists.
The ct_status_get_type() function returns the contract's type. The
string should be neither modified nor freed.
The ct_status_get_state() function returns the state of the contract.
Valid state values are:
CTS_OWNED a contract that is currently owned by a process
CTS_INHERITED a contract that has been inherited by a regent process
contract
CTS_ORPHAN a contract that has no owner and has not been inher‐
ited
CTS_DEAD a contract that is no longer in effect and will be
automatically removed from the system as soon as the
last reference to it is release (for example, an open
status file descriptor)
The ct_status_get_holder() function returns the process ID of the con‐
tract's owner if the contract is in the CTS_OWNED state, or the ID of
the regent process contract if the contract is in the CTS_INHERITED
state.
The ct_status_get_nevents() function returns the number of unacknowl‐
edged critical events on the contract's event queue.
The ct_status_get_ntime() function returns the amount of time remaining
(in seconds) before the ongoing exit negotiation times out, or -1 if
there is no negotiation ongoing.
The ct_status_get_qtime() function returns the amount of time remaining
(in seconds) in the quantum before the ongoing exit negotiation times
out, or -1 if there is no negotiation ongoing.
The ct_status_get_nevid() function returns the event ID of the ongoing
negotiation, or 0 if there are none.
The ct_status_get_cookie() function returns the cookie term of the con‐
tract.
The ct_status_get_critical() function is used to read the critical
event set term. The value is a collection of bits as described in the
contract type's manual page.
The ct_status_get_informative() function is used to read the informa‐
tive 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_status_read() returns 0. Otherwise, it
returns a non-zero error value.
Upon successful completion, ct_status_get_id(), ct_status_get_type(),
ct_status_get_holder(), ct_status_get_state(), ct_status_get_nevents(),
ct_status_get_ntime(), ct_status_get_qtime(), ct_status_get_nevid(),
ct_status_get_cookie(), ct_status_get_critical(), and ct_sta‐
tus_get_informative() return the data described in the DESCRIPTION.
ERRORS
The ct_status_read() function will fail if:
EINVAL The detail level specified is invalid.
ATTRIBUTES
See attributes(7) for descriptions of the following attributes:
tab() box; cw(2.75i) |cw(2.75i) lw(2.75i) |lw(2.75i) ATTRIBUTE TYPEAT‐
TRIBUTE VALUE _ Interface StabilityCommitted _ MT-LevelSafe
SEE ALSO
libcontract(3LIB), contract(5), attributes(7), lfcompile(7)
Oracle Solaris 11.4 1 Apr 2004 ct_status_read(3CONTRACT)