kstat_open(3KSTAT) Kernel Statistics Library Functions kstat_open(3KSTAT)NAME
kstat_open, kstat_close - initialize kernel statistics facility
SYNOPSIS
cc[ flag... ] file... -lkstat [ library...]
#include <kstat.h>
kstat_ctl_t *kstat_open(void);
int kstat_close(kstat_ctl_t *kc);
DESCRIPTION
The kstat_open() function initializes a kstat control structure that
provides access to the kernel statistics library. It returns a pointer
to this structure, which must be supplied as the kc argument in subse‐
quent libkstat function calls.
The kstat_close() function frees all resources that were associated
with kc. This is performed automatically on exit(2) and execve(2).
RETURN VALUES
Upon successful completion, kstat_open() returns a pointer to a kstat
control structure. Otherwise, it returns NULL, no resources are allo‐
cated, and errno is set to indicate the error.
Upon successful completion, kstat_close() returns 0. Otherwise, −1 is
returned and errno is set to indicate the error.
ERRORS
The kstat_open() function will fail if:
ENOMEM Insufficient storage space is available.
EAGAIN The kstat was temporarily unavailable for reading or
writing.
ENXIO The given kstat could not be located for reading.
EOVERFLOW The data for the given kstat was too large to be stored
in the structure.
The kstat_open() function can also return the error values for open(2).
The kstat_close() function can also return the error values for
close(2).
FILES
/dev/kstat kernel statistics driver
ATTRIBUTES
See attributes(5) for descriptions of the following attributes:
┌─────────────────────────────┬─────────────────────────────┐
│ ATTRIBUTE TYPE │ ATTRIBUTE VALUE │
├─────────────────────────────┼─────────────────────────────┤
│Interface Stability │Stable │
├─────────────────────────────┼─────────────────────────────┤
│MT-Level │Unsafe │
└─────────────────────────────┴─────────────────────────────┘
SEE ALSOclose(2), execve(2), open(2), exit(2), kstat(3KSTAT),
kstat_chain_update(3KSTAT), kstat_lookup(3KSTAT), kstat_read(3KSTAT),
attributes(5)SunOS 5.10 3 Aug 2004 kstat_open(3KSTAT)
