freebsd-dev/sys/geom/raid/g_raid_ctl.c
Pedro F. Giffuni 3728855a0f sys/geom: adoption of SPDX licensing ID tags.
Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.
2017-11-27 15:17:37 +00:00

252 lines
6.5 KiB
C

/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2010 Alexander Motin <mav@FreeBSD.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/kernel.h>
#include <sys/module.h>
#include <sys/lock.h>
#include <sys/mutex.h>
#include <sys/bio.h>
#include <sys/sysctl.h>
#include <sys/malloc.h>
#include <sys/bitstring.h>
#include <vm/uma.h>
#include <machine/atomic.h>
#include <geom/geom.h>
#include <sys/proc.h>
#include <sys/kthread.h>
#include <geom/raid/g_raid.h>
#include "g_raid_md_if.h"
static struct g_raid_softc *
g_raid_find_node(struct g_class *mp, const char *name)
{
struct g_raid_softc *sc;
struct g_geom *gp;
struct g_provider *pp;
struct g_raid_volume *vol;
/* Look for geom with specified name. */
LIST_FOREACH(gp, &mp->geom, geom) {
sc = gp->softc;
if (sc == NULL)
continue;
if (sc->sc_stopping != 0)
continue;
if (strcasecmp(sc->sc_name, name) == 0)
return (sc);
}
/* Look for provider with specified name. */
LIST_FOREACH(gp, &mp->geom, geom) {
sc = gp->softc;
if (sc == NULL)
continue;
if (sc->sc_stopping != 0)
continue;
LIST_FOREACH(pp, &gp->provider, provider) {
if (strcmp(pp->name, name) == 0)
return (sc);
if (strncmp(pp->name, "raid/", 5) == 0 &&
strcmp(pp->name + 5, name) == 0)
return (sc);
}
}
/* Look for volume with specified name. */
LIST_FOREACH(gp, &mp->geom, geom) {
sc = gp->softc;
if (sc == NULL)
continue;
if (sc->sc_stopping != 0)
continue;
TAILQ_FOREACH(vol, &sc->sc_volumes, v_next) {
if (strcmp(vol->v_name, name) == 0)
return (sc);
}
}
return (NULL);
}
static void
g_raid_ctl_label(struct gctl_req *req, struct g_class *mp)
{
struct g_geom *geom;
struct g_raid_softc *sc;
const char *format;
int *nargs;
int crstatus, ctlstatus;
char buf[64];
nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
if (nargs == NULL) {
gctl_error(req, "No '%s' argument.", "nargs");
return;
}
if (*nargs < 4) {
gctl_error(req, "Invalid number of arguments.");
return;
}
format = gctl_get_asciiparam(req, "arg0");
if (format == NULL) {
gctl_error(req, "No format received.");
return;
}
crstatus = g_raid_create_node_format(format, req, &geom);
if (crstatus == G_RAID_MD_TASTE_FAIL) {
gctl_error(req, "Failed to create array with format '%s'.",
format);
return;
}
sc = (struct g_raid_softc *)geom->softc;
g_topology_unlock();
sx_xlock(&sc->sc_lock);
ctlstatus = G_RAID_MD_CTL(sc->sc_md, req);
if (ctlstatus < 0) {
gctl_error(req, "Command failed: %d.", ctlstatus);
if (crstatus == G_RAID_MD_TASTE_NEW)
g_raid_destroy_node(sc, 0);
} else {
if (crstatus == G_RAID_MD_TASTE_NEW)
snprintf(buf, sizeof(buf), "%s created\n", sc->sc_name);
else
snprintf(buf, sizeof(buf), "%s reused\n", sc->sc_name);
gctl_set_param_err(req, "output", buf, strlen(buf) + 1);
}
sx_xunlock(&sc->sc_lock);
g_topology_lock();
}
static void
g_raid_ctl_stop(struct gctl_req *req, struct g_class *mp)
{
struct g_raid_softc *sc;
const char *nodename;
int *nargs, *force;
int error, how;
nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
if (nargs == NULL) {
gctl_error(req, "No '%s' argument.", "nargs");
return;
}
if (*nargs != 1) {
gctl_error(req, "Invalid number of arguments.");
return;
}
nodename = gctl_get_asciiparam(req, "arg0");
if (nodename == NULL) {
gctl_error(req, "No array name received.");
return;
}
sc = g_raid_find_node(mp, nodename);
if (sc == NULL) {
gctl_error(req, "Array '%s' not found.", nodename);
return;
}
force = gctl_get_paraml(req, "force", sizeof(*force));
if (force != NULL && *force)
how = G_RAID_DESTROY_HARD;
else
how = G_RAID_DESTROY_SOFT;
g_topology_unlock();
sx_xlock(&sc->sc_lock);
error = g_raid_destroy(sc, how);
if (error != 0)
gctl_error(req, "Array is busy.");
g_topology_lock();
}
static void
g_raid_ctl_other(struct gctl_req *req, struct g_class *mp)
{
struct g_raid_softc *sc;
const char *nodename;
int *nargs;
int ctlstatus;
nargs = gctl_get_paraml(req, "nargs", sizeof(*nargs));
if (nargs == NULL) {
gctl_error(req, "No '%s' argument.", "nargs");
return;
}
if (*nargs < 1) {
gctl_error(req, "Invalid number of arguments.");
return;
}
nodename = gctl_get_asciiparam(req, "arg0");
if (nodename == NULL) {
gctl_error(req, "No array name received.");
return;
}
sc = g_raid_find_node(mp, nodename);
if (sc == NULL) {
gctl_error(req, "Array '%s' not found.", nodename);
return;
}
g_topology_unlock();
sx_xlock(&sc->sc_lock);
if (sc->sc_md != NULL) {
ctlstatus = G_RAID_MD_CTL(sc->sc_md, req);
if (ctlstatus < 0)
gctl_error(req, "Command failed: %d.", ctlstatus);
}
sx_xunlock(&sc->sc_lock);
g_topology_lock();
}
void
g_raid_ctl(struct gctl_req *req, struct g_class *mp, const char *verb)
{
uint32_t *version;
g_topology_assert();
version = gctl_get_paraml(req, "version", sizeof(*version));
if (version == NULL) {
gctl_error(req, "No '%s' argument.", "version");
return;
}
if (*version != G_RAID_VERSION) {
gctl_error(req, "Userland and kernel parts are out of sync.");
return;
}
if (strcmp(verb, "label") == 0)
g_raid_ctl_label(req, mp);
else if (strcmp(verb, "stop") == 0)
g_raid_ctl_stop(req, mp);
else
g_raid_ctl_other(req, mp);
}