697ab8be86
as the renaming only changes internal gvinum names and will not alter the geom topology. - The topology lock was not held when calling g_wither_geom after renaming.
262 lines
7.1 KiB
C
262 lines
7.1 KiB
C
/*-
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* Copyright (c) 2005 Chris Jones
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* All rights reserved.
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*
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* This software was developed for the FreeBSD Project by Chris Jones
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* thanks to the support of Google's Summer of Code program and
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* mentoring by Lukas Ertl.
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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 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 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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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/param.h>
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#include <sys/libkern.h>
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#include <sys/malloc.h>
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#include <geom/geom.h>
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#include <geom/vinum/geom_vinum_var.h>
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#include <geom/vinum/geom_vinum.h>
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void
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gv_rename(struct g_geom *gp, struct gctl_req *req)
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{
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struct gv_softc *sc;
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struct gv_volume *v;
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struct gv_plex *p;
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struct gv_sd *s;
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struct gv_drive *d;
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char *newname, *object, *name;
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int *flags, type;
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sc = gp->softc;
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flags = gctl_get_paraml(req, "flags", sizeof(*flags));
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if (flags == NULL) {
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gctl_error(req, "no flags given");
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return;
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}
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newname = gctl_get_param(req, "newname", NULL);
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if (newname == NULL) {
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gctl_error(req, "no new name given");
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return;
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}
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object = gctl_get_param(req, "object", NULL);
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if (object == NULL) {
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gctl_error(req, "no object given");
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return;
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}
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type = gv_object_type(sc, object);
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switch (type) {
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case GV_TYPE_VOL:
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v = gv_find_vol(sc, object);
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if (v == NULL) {
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gctl_error(req, "unknown volume '%s'", object);
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return;
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}
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name = g_malloc(GV_MAXVOLNAME, M_WAITOK | M_ZERO);
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strlcpy(name, newname, GV_MAXVOLNAME);
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gv_post_event(sc, GV_EVENT_RENAME_VOL, v, name, *flags, 0);
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break;
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case GV_TYPE_PLEX:
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p = gv_find_plex(sc, object);
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if (p == NULL) {
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gctl_error(req, "unknown plex '%s'", object);
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return;
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}
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name = g_malloc(GV_MAXPLEXNAME, M_WAITOK | M_ZERO);
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strlcpy(name, newname, GV_MAXPLEXNAME);
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gv_post_event(sc, GV_EVENT_RENAME_PLEX, p, name, *flags, 0);
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break;
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case GV_TYPE_SD:
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s = gv_find_sd(sc, object);
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if (s == NULL) {
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gctl_error(req, "unknown subdisk '%s'", object);
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return;
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}
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name = g_malloc(GV_MAXSDNAME, M_WAITOK | M_ZERO);
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strlcpy(name, newname, GV_MAXSDNAME);
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gv_post_event(sc, GV_EVENT_RENAME_SD, s, name, *flags, 0);
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break;
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case GV_TYPE_DRIVE:
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d = gv_find_drive(sc, object);
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if (d == NULL) {
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gctl_error(req, "unknown drive '%s'", object);
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return;
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}
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name = g_malloc(GV_MAXDRIVENAME, M_WAITOK | M_ZERO);
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strlcpy(name, newname, GV_MAXDRIVENAME);
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gv_post_event(sc, GV_EVENT_RENAME_DRIVE, d, name, *flags, 0);
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break;
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default:
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gctl_error(req, "unknown object '%s'", object);
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return;
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}
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}
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int
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gv_rename_drive(struct gv_softc *sc, struct gv_drive *d, char *newname,
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int flags)
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{
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struct gv_sd *s;
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KASSERT(d != NULL, ("gv_rename_drive: NULL d"));
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if (gv_object_type(sc, newname) != GV_ERR_NOTFOUND) {
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G_VINUM_DEBUG(1, "drive name '%s' already in use", newname);
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return (GV_ERR_NAMETAKEN);
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}
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strlcpy(d->name, newname, sizeof(d->name));
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if (d->hdr != NULL)
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strlcpy(d->hdr->label.name, newname, sizeof(d->hdr->label.name));
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LIST_FOREACH(s, &d->subdisks, from_drive)
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strlcpy(s->drive, d->name, sizeof(s->drive));
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return (0);
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}
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int
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gv_rename_plex(struct gv_softc *sc, struct gv_plex *p, char *newname, int flags)
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{
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char newsd[GV_MAXSDNAME];
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struct gv_sd *s;
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char *ptr;
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int err;
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KASSERT(p != NULL, ("gv_rename_plex: NULL p"));
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if (gv_object_type(sc, newname) != GV_ERR_NOTFOUND) {
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G_VINUM_DEBUG(1, "plex name '%s' already in use", newname);
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return (GV_ERR_NAMETAKEN);
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}
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/*
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* Locate the plex number part of the plex names.
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* XXX: might be a good idea to sanitize input a bit more
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*/
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ptr = strrchr(newname, '.');
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if (ptr == NULL) {
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G_VINUM_DEBUG(0, "proposed plex name '%s' is not a valid plex "
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"name", newname);
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return (GV_ERR_INVNAME);
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}
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strlcpy(p->name, newname, sizeof(p->name));
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/* Fix up references and potentially rename subdisks. */
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LIST_FOREACH(s, &p->subdisks, in_plex) {
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strlcpy(s->plex, p->name, sizeof(s->plex));
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if (flags && GV_FLAG_R) {
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/*
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* Look for the two last dots in the string, and assume
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* that the old value was ok.
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*/
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ptr = strrchr(s->name, '.');
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if (ptr == NULL)
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return (GV_ERR_INVNAME);
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ptr++;
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snprintf(newsd, sizeof(newsd), "%s.%s", p->name, ptr);
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err = gv_rename_sd(sc, s, newsd, flags);
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if (err)
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return (err);
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}
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}
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return (0);
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}
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/*
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* gv_rename_sd: renames a subdisk. Note that the 'flags' argument is ignored,
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* since there are no structures below a subdisk. Similarly, we don't have to
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* clean up any references elsewhere to the subdisk's name.
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*/
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int
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gv_rename_sd(struct gv_softc *sc, struct gv_sd *s, char *newname, int flags)
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{
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char *dot1, *dot2;
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KASSERT(s != NULL, ("gv_rename_sd: NULL s"));
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if (gv_object_type(sc, newname) != GV_ERR_NOTFOUND) {
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G_VINUM_DEBUG(1, "subdisk name %s already in use", newname);
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return (GV_ERR_NAMETAKEN);
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}
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/* Locate the sd number part of the sd names. */
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dot1 = strchr(newname, '.');
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if (dot1 == NULL || (dot2 = strchr(dot1 + 1, '.')) == NULL) {
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G_VINUM_DEBUG(0, "proposed sd name '%s' is not a valid sd name",
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newname);
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return (GV_ERR_INVNAME);
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}
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strlcpy(s->name, newname, sizeof(s->name));
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return (0);
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}
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int
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gv_rename_vol(struct gv_softc *sc, struct gv_volume *v, char *newname,
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int flags)
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{
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struct g_provider *pp;
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struct gv_plex *p;
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char newplex[GV_MAXPLEXNAME], *ptr;
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int err;
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KASSERT(v != NULL, ("gv_rename_vol: NULL v"));
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pp = v->provider;
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KASSERT(pp != NULL, ("gv_rename_vol: NULL pp"));
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if (gv_object_type(sc, newname) != GV_ERR_NOTFOUND) {
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G_VINUM_DEBUG(1, "volume name %s already in use", newname);
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return (GV_ERR_NAMETAKEN);
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}
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/* Rename the volume. */
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strlcpy(v->name, newname, sizeof(v->name));
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/* Fix up references and potentially rename plexes. */
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LIST_FOREACH(p, &v->plexes, in_volume) {
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strlcpy(p->volume, v->name, sizeof(p->volume));
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if (flags && GV_FLAG_R) {
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/*
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* Look for the last dot in the string, and assume that
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* the old value was ok.
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*/
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ptr = strrchr(p->name, '.');
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ptr++;
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snprintf(newplex, sizeof(newplex), "%s.%s", v->name, ptr);
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err = gv_rename_plex(sc, p, newplex, flags);
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if (err)
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return (err);
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}
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}
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return (0);
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}
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