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b9b68a8878
Add support to systat to display zfs arc cache status/info
69 lines
2.9 KiB
C
69 lines
2.9 KiB
C
/*-
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* Copyright (c) 1980, 1989, 1992, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* From: @(#)systat.h 8.1 (Berkeley) 6/6/93
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* $FreeBSD$
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*/
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#include <curses.h>
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struct cmdtab {
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const char *c_name; /* command name */
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void (*c_refresh)(void); /* display refresh */
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void (*c_fetch)(void); /* sets up data structures */
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void (*c_label)(void); /* label display */
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int (*c_init)(void); /* initialize namelist, etc. */
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WINDOW *(*c_open)(void); /* open display */
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void (*c_close)(WINDOW *); /* close display */
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int (*c_cmd)(const char *, const char *); /* display command interpreter */
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void (*c_reset)(void); /* reset ``mode since'' display */
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char c_flags; /* see below */
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};
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/*
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* If we are started with privileges, use a kmem interface for netstat handling,
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* otherwise use sysctl.
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* In case of many open sockets, the sysctl handling might become slow.
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*/
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extern int use_kvm;
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#define CF_INIT 0x1 /* been initialized */
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#define CF_LOADAV 0x2 /* display w/ load average */
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#define CF_ZFSARC 0x4 /* display w/ ZFS cache usage */
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#define TCP 0x1
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#define UDP 0x2
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#define MAINWIN_ROW 3 /* top row for the main/lower window */
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#define GETSYSCTL(name, var) getsysctl(name, &(var), sizeof(var))
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#define KREAD(addr, buf, len) kvm_ckread((addr), (buf), (len))
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#define NVAL(indx) namelist[(indx)].n_value
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#define NPTR(indx) (void *)NVAL((indx))
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#define NREAD(indx, buf, len) kvm_ckread(NPTR((indx)), (buf), (len))
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