17c478bd9Sstevel@tonic-gate /*
27c478bd9Sstevel@tonic-gate * CDDL HEADER START
37c478bd9Sstevel@tonic-gate *
47c478bd9Sstevel@tonic-gate * The contents of this file are subject to the terms of the
57c478bd9Sstevel@tonic-gate * Common Development and Distribution License, Version 1.0 only
67c478bd9Sstevel@tonic-gate * (the "License"). You may not use this file except in compliance
77c478bd9Sstevel@tonic-gate * with the License.
87c478bd9Sstevel@tonic-gate *
97c478bd9Sstevel@tonic-gate * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
107c478bd9Sstevel@tonic-gate * or http://www.opensolaris.org/os/licensing.
117c478bd9Sstevel@tonic-gate * See the License for the specific language governing permissions
127c478bd9Sstevel@tonic-gate * and limitations under the License.
137c478bd9Sstevel@tonic-gate *
147c478bd9Sstevel@tonic-gate * When distributing Covered Code, include this CDDL HEADER in each
157c478bd9Sstevel@tonic-gate * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
167c478bd9Sstevel@tonic-gate * If applicable, add the following below this CDDL HEADER, with the
177c478bd9Sstevel@tonic-gate * fields enclosed by brackets "[]" replaced with your own identifying
187c478bd9Sstevel@tonic-gate * information: Portions Copyright [yyyy] [name of copyright owner]
197c478bd9Sstevel@tonic-gate *
207c478bd9Sstevel@tonic-gate * CDDL HEADER END
217c478bd9Sstevel@tonic-gate */
227c478bd9Sstevel@tonic-gate /*
237c478bd9Sstevel@tonic-gate * Copyright (c) 1998 by Sun Microsystems, Inc.
247c478bd9Sstevel@tonic-gate * All rights reserved.
257c478bd9Sstevel@tonic-gate */
267c478bd9Sstevel@tonic-gate
277c478bd9Sstevel@tonic-gate #include <sys/param.h>
287c478bd9Sstevel@tonic-gate #include <string.h>
297c478bd9Sstevel@tonic-gate #include <stdlib.h>
307c478bd9Sstevel@tonic-gate #include <stdio.h>
317c478bd9Sstevel@tonic-gate
327c478bd9Sstevel@tonic-gate #include "utils.h"
337c478bd9Sstevel@tonic-gate #include "swap.h"
347c478bd9Sstevel@tonic-gate
357c478bd9Sstevel@tonic-gate swaptbl_t *
swap_list(void)367c478bd9Sstevel@tonic-gate swap_list(void)
377c478bd9Sstevel@tonic-gate {
387c478bd9Sstevel@tonic-gate swaptbl_t *swt;
397c478bd9Sstevel@tonic-gate
407c478bd9Sstevel@tonic-gate int n, i;
417c478bd9Sstevel@tonic-gate char *p;
427c478bd9Sstevel@tonic-gate
437c478bd9Sstevel@tonic-gate if ((n = swapctl(SC_GETNSWP, NULL)) == -1) {
447c478bd9Sstevel@tonic-gate warn(gettext("failed to get swap table size"));
457c478bd9Sstevel@tonic-gate return (NULL);
467c478bd9Sstevel@tonic-gate }
477c478bd9Sstevel@tonic-gate
487c478bd9Sstevel@tonic-gate swt = malloc(sizeof (int) + n * sizeof (swapent_t) + n * MAXPATHLEN);
497c478bd9Sstevel@tonic-gate
507c478bd9Sstevel@tonic-gate if (swt == NULL) {
517c478bd9Sstevel@tonic-gate warn(gettext("failed to allocate swap table"));
527c478bd9Sstevel@tonic-gate return (NULL);
537c478bd9Sstevel@tonic-gate }
547c478bd9Sstevel@tonic-gate
557c478bd9Sstevel@tonic-gate swt->swt_n = n;
567c478bd9Sstevel@tonic-gate p = (char *)swt + (sizeof (int) + n * sizeof (swapent_t));
577c478bd9Sstevel@tonic-gate
587c478bd9Sstevel@tonic-gate for (i = 0; i < n; i++) {
597c478bd9Sstevel@tonic-gate swt->swt_ent[i].ste_path = p;
607c478bd9Sstevel@tonic-gate p += MAXPATHLEN;
617c478bd9Sstevel@tonic-gate }
627c478bd9Sstevel@tonic-gate
637c478bd9Sstevel@tonic-gate if ((n = swapctl(SC_LIST, swt)) == -1) {
647c478bd9Sstevel@tonic-gate warn(gettext("failed to get swap table"));
657c478bd9Sstevel@tonic-gate free(swt);
667c478bd9Sstevel@tonic-gate return (NULL);
677c478bd9Sstevel@tonic-gate }
687c478bd9Sstevel@tonic-gate
697c478bd9Sstevel@tonic-gate swt->swt_n = n; /* Number of entries filled in */
707c478bd9Sstevel@tonic-gate n = 0; /* Number of valid entries */
717c478bd9Sstevel@tonic-gate
727c478bd9Sstevel@tonic-gate /*
737c478bd9Sstevel@tonic-gate * Shrink the array of swapent_t structures by stripping out
747c478bd9Sstevel@tonic-gate * all those which are ST_INDEL or ST_DOINGDEL.
757c478bd9Sstevel@tonic-gate */
767c478bd9Sstevel@tonic-gate for (i = 0; i < swt->swt_n; i++) {
777c478bd9Sstevel@tonic-gate if (!(swt->swt_ent[i].ste_flags & (ST_INDEL | ST_DOINGDEL))) {
787c478bd9Sstevel@tonic-gate /*
797c478bd9Sstevel@tonic-gate * If i is ahead of the valid count (n), copy the
807c478bd9Sstevel@tonic-gate * ith entry back to the nth entry so valid entries
817c478bd9Sstevel@tonic-gate * fill the initial part of swt_ent[].
827c478bd9Sstevel@tonic-gate */
837c478bd9Sstevel@tonic-gate if (i > n) {
847c478bd9Sstevel@tonic-gate (void) memcpy(&swt->swt_ent[n],
857c478bd9Sstevel@tonic-gate &swt->swt_ent[i], sizeof (swapent_t));
867c478bd9Sstevel@tonic-gate }
877c478bd9Sstevel@tonic-gate
887c478bd9Sstevel@tonic-gate /*
897c478bd9Sstevel@tonic-gate * If the pathname isn't absolute, assume it begins
90*bbf21555SRichard Lowe * with /dev as swap(8) does.
917c478bd9Sstevel@tonic-gate */
927c478bd9Sstevel@tonic-gate if (swt->swt_ent[n].ste_path[0] != '/') {
937c478bd9Sstevel@tonic-gate char buf[MAXPATHLEN];
947c478bd9Sstevel@tonic-gate
957c478bd9Sstevel@tonic-gate (void) snprintf(buf, sizeof (buf), "/dev/%s",
967c478bd9Sstevel@tonic-gate swt->swt_ent[n].ste_path);
977c478bd9Sstevel@tonic-gate (void) strcpy(swt->swt_ent[n].ste_path, buf);
987c478bd9Sstevel@tonic-gate }
997c478bd9Sstevel@tonic-gate
1007c478bd9Sstevel@tonic-gate n++;
1017c478bd9Sstevel@tonic-gate }
1027c478bd9Sstevel@tonic-gate }
1037c478bd9Sstevel@tonic-gate
1047c478bd9Sstevel@tonic-gate swt->swt_n = n; /* Update swt_n with number of valid entries */
1057c478bd9Sstevel@tonic-gate return (swt);
1067c478bd9Sstevel@tonic-gate }
107