2002-10-13 20:33:33 +00:00
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/*-
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* Copyright (c) 2002 Poul-Henning Kamp
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* Copyright (c) 2002 Networks Associates Technology, Inc.
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* All rights reserved.
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*
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* This software was developed for the FreeBSD Project by Poul-Henning Kamp
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* and NAI Labs, the Security Research Division of Network Associates, Inc.
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* under DARPA/SPAWAR contract N66001-01-C-8035 ("CBOSS"), as part of the
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* DARPA CHATS research program.
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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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* 3. The names of the authors may not be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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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* $FreeBSD$
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*/
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#include "opt_geom.h"
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#include <sys/param.h>
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#include <sys/systm.h>
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#include <sys/kernel.h>
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#include <sys/sysctl.h>
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#include <sys/bio.h>
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#include <sys/conf.h>
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#include <sys/disk.h>
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#include <sys/malloc.h>
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#include <sys/sysctl.h>
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2003-04-23 07:50:01 +00:00
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#include <sys/sbuf.h>
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2002-10-13 20:33:33 +00:00
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#include <sys/lock.h>
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#include <sys/mutex.h>
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2003-03-23 10:16:14 +00:00
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#include <vm/vm.h>
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#include <vm/vm_extern.h>
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2002-10-13 20:33:33 +00:00
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#include <geom/geom.h>
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#include <geom/geom_int.h>
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2003-03-27 14:35:00 +00:00
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#define GCTL_TABLE 1
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2003-03-23 10:16:14 +00:00
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#include <geom/geom_ctl.h>
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#include <geom/geom_ext.h>
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2003-04-23 07:50:01 +00:00
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#include <machine/stdarg.h>
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2002-10-13 20:33:33 +00:00
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static d_ioctl_t g_ctl_ioctl;
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2003-03-24 13:37:15 +00:00
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static struct cdevsw g_ctl_cdevsw = {
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.d_open = nullopen,
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.d_close = nullclose,
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.d_ioctl = g_ctl_ioctl,
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.d_name = "g_ctl",
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2002-10-13 20:33:33 +00:00
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};
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2003-03-24 13:37:15 +00:00
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void
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2002-10-13 20:33:33 +00:00
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g_ctl_init(void)
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{
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2003-03-24 13:37:15 +00:00
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make_dev(&g_ctl_cdevsw, 0,
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UID_ROOT, GID_OPERATOR, 0640, PATH_GEOM_CTL);
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2003-03-27 14:35:00 +00:00
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KASSERT(GCTL_PARAM_RD == VM_PROT_READ,
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("GCTL_PARAM_RD != VM_PROT_READ"));
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KASSERT(GCTL_PARAM_WR == VM_PROT_WRITE,
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("GCTL_PARAM_WR != VM_PROT_WRITE"));
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2002-10-13 20:33:33 +00:00
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}
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2003-03-23 10:16:14 +00:00
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/*
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* Report an error back to the user in ascii format. Return whatever copyout
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* returned, or EINVAL if it succeeded.
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* XXX: should not be static.
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* XXX: should take printf like args.
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*/
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2003-03-27 14:35:00 +00:00
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int
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2003-04-23 07:50:01 +00:00
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gctl_error(struct gctl_req *req, const char *fmt, ...)
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2003-03-23 10:16:14 +00:00
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{
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int error;
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2003-04-23 07:50:01 +00:00
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va_list ap;
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struct sbuf *sb;
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2003-03-23 10:16:14 +00:00
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2003-04-23 07:50:01 +00:00
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sb = sbuf_new(NULL, NULL, 0, SBUF_AUTOEXTEND);
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if (sb == NULL) {
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error = copyout(fmt, req->error,
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imin(req->lerror, strlen(fmt) + 1));
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} else {
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va_start(ap, fmt);
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sbuf_vprintf(sb, fmt, ap);
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sbuf_finish(sb);
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if (g_debugflags & G_F_CTLDUMP)
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printf("gctl %p error \"%s\"\n", req, sbuf_data(sb));
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error = copyout(sbuf_data(sb), req->error,
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imin(req->lerror, sbuf_len(sb) + 1));
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}
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2003-03-23 10:16:14 +00:00
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if (!error)
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error = EINVAL;
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2003-04-23 07:50:01 +00:00
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sbuf_delete(sb);
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2003-03-23 10:16:14 +00:00
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return (error);
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}
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/*
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* Allocate space and copyin() something.
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* XXX: this should really be a standard function in the kernel.
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*/
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static void *
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2003-03-27 14:35:00 +00:00
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geom_alloc_copyin(struct gctl_req *req, void *uaddr, size_t len, int *errp)
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2003-03-23 10:16:14 +00:00
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{
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int error;
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void *ptr;
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ptr = g_malloc(len, M_WAITOK);
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if (ptr == NULL)
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error = ENOMEM;
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else
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error = copyin(uaddr, ptr, len);
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if (!error)
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return (ptr);
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2003-03-27 14:35:00 +00:00
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gctl_error(req, "no access to argument");
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2003-03-23 10:16:14 +00:00
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*errp = error;
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if (ptr != NULL)
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g_free(ptr);
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return (NULL);
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}
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/*
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* XXX: This function is a nightmare. It walks through the request and
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* XXX: makes sure that the various bits and pieces are there and copies
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* XXX: some of them into kernel memory to make things easier.
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* XXX: I really wish we had a standard marshalling layer somewhere.
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*/
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static int
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2003-03-27 14:35:00 +00:00
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gctl_copyin(struct gctl_req *req)
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2003-03-23 10:16:14 +00:00
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{
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int error, i, j;
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2003-03-27 14:35:00 +00:00
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struct gctl_req_arg *ap;
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2003-03-23 10:16:14 +00:00
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char *p;
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error = 0;
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2003-03-27 14:35:00 +00:00
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ap = geom_alloc_copyin(req, req->arg, req->narg * sizeof(*ap), &error);
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if (ap == NULL) {
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gctl_error(req, "copyin() of arguments failed");
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2003-03-23 10:16:14 +00:00
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return (error);
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2003-03-27 14:35:00 +00:00
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}
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2003-03-23 10:16:14 +00:00
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for (i = 0; !error && i < req->narg; i++) {
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2003-03-27 14:35:00 +00:00
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if (ap[i].len > 0 &&
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!useracc(ap[i].value, ap[i].len,
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ap[i].flag & GCTL_PARAM_RW))
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error = gctl_error(req, "no access to param data");
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2003-04-22 19:42:05 +00:00
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if (error)
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2003-03-27 14:35:00 +00:00
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break;
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2003-03-23 10:16:14 +00:00
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p = NULL;
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2003-03-27 14:35:00 +00:00
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if (ap[i].nlen < 1 || ap[i].nlen > SPECNAMELEN) {
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error = gctl_error(req, "wrong param name length");
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2003-03-23 10:16:14 +00:00
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break;
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2003-03-27 14:35:00 +00:00
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}
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p = geom_alloc_copyin(req, ap[i].name, ap[i].nlen, &error);
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if (p == NULL)
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2003-03-23 10:16:14 +00:00
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break;
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2003-03-27 14:35:00 +00:00
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if (p[ap[i].nlen - 1] != '\0') {
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error = gctl_error(req, "unterminated param name");
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2003-03-23 10:16:14 +00:00
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g_free(p);
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break;
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}
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2003-03-27 14:35:00 +00:00
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ap[i].name = p;
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ap[i].nlen = 0;
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2003-03-23 10:16:14 +00:00
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}
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if (!error) {
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req->arg = ap;
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return (0);
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}
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for (j = 0; j < i; j++)
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if (ap[j].nlen == 0 && ap[j].name != NULL)
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g_free(ap[j].name);
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g_free(ap);
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return (error);
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}
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static void
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2003-03-27 14:35:00 +00:00
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gctl_dump(struct gctl_req *req)
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2003-03-23 10:16:14 +00:00
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{
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u_int i;
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int j, error;
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2003-03-27 14:35:00 +00:00
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struct gctl_req_arg *ap;
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2003-03-23 10:16:14 +00:00
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void *p;
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2003-03-27 14:35:00 +00:00
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printf("Dump of gctl %s request at %p:\n", req->reqt->name, req);
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2003-03-23 10:16:14 +00:00
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if (req->lerror > 0) {
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2003-03-27 14:35:00 +00:00
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p = geom_alloc_copyin(req, req->error, req->lerror, &error);
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2003-03-23 10:16:14 +00:00
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if (p != NULL) {
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((char *)p)[req->lerror - 1] = '\0';
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printf(" error:\t\"%s\"\n", (char *)p);
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g_free(p);
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}
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}
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for (i = 0; i < req->narg; i++) {
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ap = &req->arg[i];
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2003-04-22 19:42:05 +00:00
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printf(" param:\t\"%s\"", ap->name);
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2003-03-27 14:35:00 +00:00
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printf(" [%s%s%d] = ",
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ap->flag & GCTL_PARAM_RD ? "R" : "",
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ap->flag & GCTL_PARAM_WR ? "W" : "",
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ap->len);
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if (ap->flag & GCTL_PARAM_ASCII) {
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p = geom_alloc_copyin(req, ap->value, ap->len, &error);
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if (p != NULL) {
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((char *)p)[ap->len - 1] = '\0';
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2003-03-23 10:16:14 +00:00
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printf("\"%s\"", (char *)p);
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2003-03-27 14:35:00 +00:00
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}
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2003-03-23 10:16:14 +00:00
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g_free(p);
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} else if (ap->len > 0) {
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2003-03-27 14:35:00 +00:00
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p = geom_alloc_copyin(req, ap->value, ap->len, &error);
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2003-03-23 10:16:14 +00:00
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for (j = 0; j < ap->len; j++)
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printf(" %02x", ((u_char *)p)[j]);
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g_free(p);
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} else {
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printf(" = %p", ap->value);
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}
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printf("\n");
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}
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}
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2003-03-27 14:35:00 +00:00
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void *
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gctl_get_param(struct gctl_req *req, const char *param, int *len)
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{
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int i, error, j;
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void *p;
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struct gctl_req_arg *ap;
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for (i = 0; i < req->narg; i++) {
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ap = &req->arg[i];
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if (strcmp(param, ap->name))
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continue;
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if (!(ap->flag & GCTL_PARAM_RD))
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continue;
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if (ap->len > 0)
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j = ap->len;
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else
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j = 0;
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if (j != 0)
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p = geom_alloc_copyin(req, ap->value, j, &error);
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/* XXX: should not fail, tested prviously */
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else
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p = ap->value;
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if (len != NULL)
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*len = j;
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return (p);
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}
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return (NULL);
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}
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2003-04-23 08:03:47 +00:00
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void *
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gctl_get_paraml(struct gctl_req *req, const char *param, int len)
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{
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int i;
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void *p;
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p = gctl_get_param(req, param, &i);
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if (p == NULL)
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gctl_error(req, "Missing %s argument", param);
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else if (i != len) {
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g_free(p);
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p = NULL;
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gctl_error(req, "Wrong length %s argument", param);
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}
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return (p);
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}
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2003-03-27 14:35:00 +00:00
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static struct g_class*
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gctl_get_class(struct gctl_req *req)
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{
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char *p;
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int len;
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struct g_class *cp;
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p = gctl_get_param(req, "class", &len);
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if (p == NULL)
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return (NULL);
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if (p[len - 1] != '\0') {
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gctl_error(req, "Unterminated class name");
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g_free(p);
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return (NULL);
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}
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LIST_FOREACH(cp, &g_classes, class) {
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if (!strcmp(p, cp->name)) {
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g_free(p);
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return (cp);
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}
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}
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gctl_error(req, "Class not found");
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return (NULL);
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}
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static struct g_geom*
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gctl_get_geom(struct gctl_req *req, struct g_class *mpr)
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{
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char *p;
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int len;
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struct g_class *mp;
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struct g_geom *gp;
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p = gctl_get_param(req, "geom", &len);
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if (p == NULL)
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return (NULL);
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if (p[len - 1] != '\0') {
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gctl_error(req, "Unterminated provider name");
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|
g_free(p);
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
LIST_FOREACH(mp, &g_classes, class) {
|
|
|
|
if (mpr != NULL && mpr != mp)
|
|
|
|
continue;
|
|
|
|
LIST_FOREACH(gp, &mp->geom, geom) {
|
|
|
|
if (!strcmp(p, gp->name)) {
|
|
|
|
g_free(p);
|
|
|
|
return (gp);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
gctl_error(req, "Geom not found");
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
|
|
|
|
static struct g_provider*
|
|
|
|
gctl_get_provider(struct gctl_req *req)
|
|
|
|
{
|
|
|
|
char *p;
|
|
|
|
int len;
|
|
|
|
struct g_class *cp;
|
|
|
|
struct g_geom *gp;
|
|
|
|
struct g_provider *pp;
|
|
|
|
|
|
|
|
p = gctl_get_param(req, "provider", &len);
|
|
|
|
if (p == NULL)
|
|
|
|
return (NULL);
|
|
|
|
if (p[len - 1] != '\0') {
|
|
|
|
gctl_error(req, "Unterminated provider name");
|
|
|
|
g_free(p);
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
LIST_FOREACH(cp, &g_classes, class) {
|
|
|
|
LIST_FOREACH(gp, &cp->geom, geom) {
|
|
|
|
LIST_FOREACH(pp, &gp->provider, provider) {
|
|
|
|
if (!strcmp(p, pp->name)) {
|
|
|
|
g_free(p);
|
|
|
|
return (pp);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
gctl_error(req, "Provider not found");
|
|
|
|
return (NULL);
|
|
|
|
}
|
|
|
|
|
2003-04-03 11:19:24 +00:00
|
|
|
static int
|
2003-03-27 14:35:00 +00:00
|
|
|
gctl_create_geom(struct gctl_req *req)
|
|
|
|
{
|
|
|
|
struct g_class *mp;
|
|
|
|
struct g_provider *pp;
|
2003-04-03 11:19:24 +00:00
|
|
|
int error;
|
2003-03-27 14:35:00 +00:00
|
|
|
|
|
|
|
g_topology_assert();
|
|
|
|
mp = gctl_get_class(req);
|
|
|
|
if (mp == NULL)
|
2003-04-03 11:19:24 +00:00
|
|
|
return (gctl_error(req, "Class not found"));
|
|
|
|
if (mp->create_geom == NULL)
|
|
|
|
return (gctl_error(req, "Class has no create_geom method"));
|
2003-03-27 14:35:00 +00:00
|
|
|
pp = gctl_get_provider(req);
|
2003-04-03 11:19:24 +00:00
|
|
|
error = mp->create_geom(req, mp, pp);
|
2003-03-27 14:35:00 +00:00
|
|
|
g_topology_assert();
|
2003-04-03 11:19:24 +00:00
|
|
|
return (error);
|
2003-03-27 14:35:00 +00:00
|
|
|
}
|
|
|
|
|
2003-04-03 11:19:24 +00:00
|
|
|
static int
|
2003-03-27 14:35:00 +00:00
|
|
|
gctl_destroy_geom(struct gctl_req *req)
|
|
|
|
{
|
|
|
|
struct g_class *mp;
|
|
|
|
struct g_geom *gp;
|
2003-04-03 11:19:24 +00:00
|
|
|
int error;
|
2003-03-27 14:35:00 +00:00
|
|
|
|
|
|
|
g_topology_assert();
|
|
|
|
mp = gctl_get_class(req);
|
|
|
|
if (mp == NULL)
|
2003-04-03 11:19:24 +00:00
|
|
|
return (gctl_error(req, "Class not found"));
|
|
|
|
if (mp->destroy_geom == NULL)
|
|
|
|
return (gctl_error(req, "Class has no destroy_geom method"));
|
2003-03-27 14:35:00 +00:00
|
|
|
gp = gctl_get_geom(req, mp);
|
2003-04-03 11:19:24 +00:00
|
|
|
if (gp == NULL)
|
|
|
|
return (gctl_error(req, "Geom not specified"));
|
|
|
|
if (gp->class != mp)
|
|
|
|
return (gctl_error(req, "Geom not of specificed class"));
|
|
|
|
error = mp->destroy_geom(req, mp, gp);
|
2003-03-27 14:35:00 +00:00
|
|
|
g_topology_assert();
|
2003-04-03 11:19:24 +00:00
|
|
|
return (error);
|
2003-03-27 14:35:00 +00:00
|
|
|
}
|
|
|
|
|
2003-04-22 21:01:46 +00:00
|
|
|
static int
|
|
|
|
gctl_config_geom(struct gctl_req *req)
|
|
|
|
{
|
|
|
|
struct g_class *mp;
|
|
|
|
struct g_geom *gp;
|
|
|
|
char *verb;
|
|
|
|
int error, vlen;
|
|
|
|
|
|
|
|
g_topology_assert();
|
|
|
|
mp = gctl_get_class(req);
|
|
|
|
if (mp == NULL)
|
|
|
|
return (gctl_error(req, "Class not found"));
|
|
|
|
if (mp->config_geom == NULL)
|
|
|
|
return (gctl_error(req, "Class has no config_geom method"));
|
|
|
|
gp = gctl_get_geom(req, mp);
|
|
|
|
if (gp == NULL)
|
|
|
|
return (gctl_error(req, "Geom not specified"));
|
|
|
|
if (gp->class != mp)
|
|
|
|
return (gctl_error(req, "Geom not of specificed class"));
|
|
|
|
verb = gctl_get_param(req, "verb", &vlen);
|
|
|
|
if (verb == NULL)
|
|
|
|
return (gctl_error(req, "Missing verb parameter"));
|
|
|
|
if (vlen < 2) {
|
|
|
|
g_free(verb);
|
|
|
|
return (gctl_error(req, "Too short verb parameter"));
|
|
|
|
}
|
|
|
|
if (verb[vlen - 1] != '\0') {
|
|
|
|
g_free(verb);
|
|
|
|
return (gctl_error(req, "Unterminated verb parameter"));
|
|
|
|
}
|
|
|
|
error = mp->config_geom(req, gp, verb);
|
|
|
|
g_free(verb);
|
|
|
|
g_topology_assert();
|
|
|
|
return (error);
|
|
|
|
}
|
|
|
|
|
2003-03-23 10:16:14 +00:00
|
|
|
/*
|
|
|
|
* Handle ioctl from libgeom::geom_ctl.c
|
|
|
|
*/
|
|
|
|
static int
|
|
|
|
g_ctl_ioctl_ctl(dev_t dev, u_long cmd, caddr_t data, int fflag, struct thread *td)
|
|
|
|
{
|
|
|
|
int error;
|
|
|
|
int i;
|
2003-03-27 14:35:00 +00:00
|
|
|
struct gctl_req *req;
|
2003-03-23 10:16:14 +00:00
|
|
|
|
|
|
|
req = (void *)data;
|
2003-03-27 14:35:00 +00:00
|
|
|
/* It is an error if we cannot return an error text */
|
2003-03-23 10:16:14 +00:00
|
|
|
if (req->lerror < 1)
|
|
|
|
return (EINVAL);
|
2003-03-27 14:35:00 +00:00
|
|
|
if (!useracc(req->error, req->lerror, VM_PROT_WRITE))
|
|
|
|
return (EINVAL);
|
|
|
|
|
|
|
|
/* Check the version */
|
|
|
|
if (req->version != GCTL_VERSION)
|
|
|
|
return (gctl_error(req,
|
|
|
|
"kernel and libgeom version mismatch."));
|
|
|
|
|
|
|
|
/* Check the request type */
|
|
|
|
for (i = 0; gcrt[i].request != GCTL_INVALID_REQUEST; i++)
|
|
|
|
if (gcrt[i].request == req->request)
|
2003-03-23 10:16:14 +00:00
|
|
|
break;
|
2003-03-27 14:35:00 +00:00
|
|
|
if (gcrt[i].request == GCTL_INVALID_REQUEST)
|
|
|
|
return (gctl_error(req, "invalid request"));
|
|
|
|
req->reqt = &gcrt[i];
|
|
|
|
|
|
|
|
/* Get things on board */
|
|
|
|
error = gctl_copyin(req);
|
2003-03-23 10:16:14 +00:00
|
|
|
if (error)
|
|
|
|
return (error);
|
2003-03-27 14:35:00 +00:00
|
|
|
|
2003-03-31 18:35:37 +00:00
|
|
|
if (g_debugflags & G_F_CTLDUMP)
|
|
|
|
gctl_dump(req);
|
2003-03-27 14:35:00 +00:00
|
|
|
g_topology_lock();
|
|
|
|
switch (req->request) {
|
|
|
|
case GCTL_CREATE_GEOM:
|
2003-04-03 11:19:24 +00:00
|
|
|
error = gctl_create_geom(req);
|
2003-03-27 14:35:00 +00:00
|
|
|
break;
|
|
|
|
case GCTL_DESTROY_GEOM:
|
2003-04-03 11:19:24 +00:00
|
|
|
error = gctl_destroy_geom(req);
|
2003-03-27 14:35:00 +00:00
|
|
|
break;
|
2003-04-22 21:01:46 +00:00
|
|
|
case GCTL_CONFIG_GEOM:
|
|
|
|
error = gctl_config_geom(req);
|
|
|
|
break;
|
2003-03-27 14:35:00 +00:00
|
|
|
default:
|
2003-04-03 11:19:24 +00:00
|
|
|
error = gctl_error(req, "XXX: TBD");
|
2003-03-27 14:35:00 +00:00
|
|
|
break;
|
|
|
|
}
|
|
|
|
g_topology_unlock();
|
2003-04-03 11:19:24 +00:00
|
|
|
return (error);
|
2003-03-23 10:16:14 +00:00
|
|
|
}
|
|
|
|
|
2002-10-13 20:33:33 +00:00
|
|
|
static int
|
|
|
|
g_ctl_ioctl(dev_t dev, u_long cmd, caddr_t data, int fflag, struct thread *td)
|
|
|
|
{
|
|
|
|
int error;
|
|
|
|
|
|
|
|
switch(cmd) {
|
2003-03-23 10:16:14 +00:00
|
|
|
case GEOM_CTL:
|
2003-03-27 14:35:00 +00:00
|
|
|
DROP_GIANT();
|
2003-03-23 10:16:14 +00:00
|
|
|
error = g_ctl_ioctl_ctl(dev, cmd, data, fflag, td);
|
2003-03-27 14:35:00 +00:00
|
|
|
PICKUP_GIANT();
|
2003-03-23 10:16:14 +00:00
|
|
|
break;
|
2002-10-13 20:33:33 +00:00
|
|
|
default:
|
|
|
|
error = ENOTTY;
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
return (error);
|
|
|
|
|
|
|
|
}
|