/*
 * tools/lib/lv_create_remove.c
 *
 * Copyright (C) 1997, 1999  Heinz Mauelshagen, Sistina Software
 *
 * March 1997
 * January 1999
 * January 2000
 *
 *
 * This LVM library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This LVM library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public
 * License along with this LVM library; if not, write to the Free
 * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
 * MA 02111-1307, USA
 *
 */

/*
 * Changelog
 *
 *    26/01/1999 - made volume group directory prefix a preprocessor option
 *    31/01/2000 - use debug_enter()/debug_leave()
 *
 */

#include <liblvm.h>

/* internal function */
int lv_create_remove ( vg_t *, lv_t *, char *, int);


inline int lv_create ( vg_t *vg, lv_t *lv, char *lv_name) {
   return lv_create_remove ( vg, lv, lv_name, LV_CREATE);
}


inline int lv_remove ( vg_t *vg, lv_t *lv, char *lv_name) {
   return lv_create_remove ( vg, lv, lv_name, LV_REMOVE);
}


int lv_create_remove ( vg_t *vg, lv_t *lv, char *lv_name, int cr) {
   int group = -1;
   int ret = 0;
   char group_file[NAME_LEN] = { 0, };
   lv_req_t req;

#ifdef DEBUG
   debug_enter ( "lv_create_remove -- CALLED\n");
#endif

   if ( vg == NULL ||
        ( ret = vg_check_consistency ( vg)) < 0 ||
        lv == NULL ||
        ( ret = lv_check_consistency ( lv)) < 0 ||
        lv_name == NULL ||
        lv_check_name ( lv_name) < 0) {
      ret = -LVM_EPARAM;
      goto lv_create_remove_end;
   }

   sprintf ( group_file, LVM_DIR_PREFIX "%s/group%c", vg->vg_name, 0);
   strcpy ( req.lv_name, lv_name);
   req.lv = lv;
   if ( ( group = open ( group_file, O_RDWR)) == -1) {
      ret = -LVM_ELV_CREATE_REMOVE_OPEN;
      goto lv_create_remove_end;
   }

#ifdef DEBUG
   debug ( "lv_create_remove -- BEFORE ioctl\n");
#endif

   if ( ( ret = ioctl ( group, cr, &req)) == -1) ret = -errno;
   close ( group);
   if ( ret < 0) goto lv_create_remove_end;
#ifdef DEBUG
   debug ( "lv_create_remove -- BEFORE pv_change_all_pv_for_lv_of_vg\n");
#endif
   if ( cr == LV_CREATE)
      ret = pv_change_all_pv_for_lv_of_vg ( vg->vg_name, lv_name, vg);
   else
      ret = pv_change_all_pv_of_vg ( vg->vg_name, vg);

lv_create_remove_end:
#ifdef DEBUG
   debug_leave ( "lv_create_remove -- LEAVING with ret: %d\n", ret);
#endif
   return ret;
}
