946e2f3595
understand everything correctly, we don't really need it. - Provide default numeric value as strings. This allows to simplify a lot of code. - Bump version number.
127 lines
3.5 KiB
C
127 lines
3.5 KiB
C
/*-
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* Copyright (c) 2009 Fabio Checconi
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* Copyright (c) 2010 Luigi Rizzo, Universita` di Pisa
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* 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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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHORS 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 AUTHORS 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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/*
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* $Id$
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* $FreeBSD$
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*
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* This file implements the userspace library used by the 'geom'
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* command to load and manipulate disk schedulers.
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*/
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#include <sys/cdefs.h>
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#include <sys/param.h>
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#include <sys/linker.h>
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#include <sys/module.h>
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#include <stdio.h>
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#include <stdint.h>
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#include <libgeom.h>
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#include "core/geom.h"
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#include "misc/subr.h"
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#define G_SCHED_VERSION 0
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uint32_t lib_version = G_LIB_VERSION;
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uint32_t version = G_SCHED_VERSION;
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/*
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* storage for parameters used by this geom class.
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* Right now only the scheduler name is used.
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*/
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#define GSCHED_ALGO "rr" /* default scheduler */
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/*
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* Adapt to differences in geom library.
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* in V1 struct g_command misses gc_argname, eld, and G_BOOL is undefined
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*/
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#if G_LIB_VERSION <= 1
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#define G_TYPE_BOOL G_TYPE_NUMBER
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#endif
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#if G_LIB_VERSION >= 3 && G_LIB_VERSION <= 4
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#define G_ARGNAME NULL,
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#else
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#define G_ARGNAME
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#endif
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static void
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gcmd_createinsert(struct gctl_req *req, unsigned flags __unused)
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{
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const char *reqalgo;
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char name[64];
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if (gctl_has_param(req, "algo"))
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reqalgo = gctl_get_ascii(req, "algo");
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else
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reqalgo = GSCHED_ALGO;
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snprintf(name, sizeof(name), "gsched_%s", reqalgo);
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/*
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* Do not complain about errors here, gctl_issue()
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* will fail anyway.
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*/
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if (modfind(name) < 0)
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kldload(name);
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gctl_issue(req);
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}
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struct g_command class_commands[] = {
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{ "create", G_FLAG_VERBOSE | G_FLAG_LOADKLD, gcmd_createinsert,
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{
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{ 'a', "algo", GSCHED_ALGO, G_TYPE_STRING },
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G_OPT_SENTINEL
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},
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G_ARGNAME "[-v] [-a algorithm_name] dev ..."
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},
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{ "insert", G_FLAG_VERBOSE | G_FLAG_LOADKLD, gcmd_createinsert,
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{
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{ 'a', "algo", GSCHED_ALGO, G_TYPE_STRING },
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G_OPT_SENTINEL
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},
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G_ARGNAME "[-v] [-a algorithm_name] dev ..."
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},
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{ "configure", G_FLAG_VERBOSE, NULL,
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{
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{ 'a', "algo", GSCHED_ALGO, G_TYPE_STRING },
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G_OPT_SENTINEL
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},
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G_ARGNAME "[-v] [-a algorithm_name] prov ..."
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},
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{ "destroy", G_FLAG_VERBOSE, NULL,
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{
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{ 'f', "force", NULL, G_TYPE_BOOL },
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G_OPT_SENTINEL
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},
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G_ARGNAME "[-fv] prov ..."
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},
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{ "reset", G_FLAG_VERBOSE, NULL, G_NULL_OPTS,
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G_ARGNAME "[-v] prov ..."
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},
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G_CMD_SENTINEL
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};
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