mirror of
https://git.proxmox.com/git/mirror_zfs.git
synced 2024-11-18 02:20:59 +03:00
3283f137d7
Factor Linux specific functions out of the zpool command.
Reviewed-by: Allan Jude <allanjude@freebsd.org>
Reviewed-by: Ryan Moeller <ryan@ixsystems.com>
Reviewed-by: Sean Eric Fagan <sef@ixsystems.com>
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Reviewed-by: loli10K <ezomori.nozomu@gmail.com>
Signed-off-by: Matt Macy <mmacy@FreeBSD.org>
Closes #9333
126 lines
2.6 KiB
C
126 lines
2.6 KiB
C
/*
|
|
* CDDL HEADER START
|
|
*
|
|
* The contents of this file are subject to the terms of the
|
|
* Common Development and Distribution License (the "License").
|
|
* You may not use this file except in compliance with the License.
|
|
*
|
|
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
|
|
* or http://www.opensolaris.org/os/licensing.
|
|
* See the License for the specific language governing permissions
|
|
* and limitations under the License.
|
|
*
|
|
* When distributing Covered Code, include this CDDL HEADER in each
|
|
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
|
|
* If applicable, add the following below this CDDL HEADER, with the
|
|
* fields enclosed by brackets "[]" replaced with your own identifying
|
|
* information: Portions Copyright [yyyy] [name of copyright owner]
|
|
*
|
|
* CDDL HEADER END
|
|
*/
|
|
/*
|
|
* Copyright 2009 Sun Microsystems, Inc. All rights reserved.
|
|
* Use is subject to license terms.
|
|
*/
|
|
|
|
#include <errno.h>
|
|
#include <libgen.h>
|
|
#include <libintl.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <strings.h>
|
|
#include <ctype.h>
|
|
|
|
#include "zpool_util.h"
|
|
|
|
/*
|
|
* Utility function to guarantee malloc() success.
|
|
*/
|
|
void *
|
|
safe_malloc(size_t size)
|
|
{
|
|
void *data;
|
|
|
|
if ((data = calloc(1, size)) == NULL) {
|
|
(void) fprintf(stderr, "internal error: out of memory\n");
|
|
exit(1);
|
|
}
|
|
|
|
return (data);
|
|
}
|
|
|
|
/*
|
|
* Display an out of memory error message and abort the current program.
|
|
*/
|
|
void
|
|
zpool_no_memory(void)
|
|
{
|
|
assert(errno == ENOMEM);
|
|
(void) fprintf(stderr,
|
|
gettext("internal error: out of memory\n"));
|
|
exit(1);
|
|
}
|
|
|
|
/*
|
|
* Return the number of logs in supplied nvlist
|
|
*/
|
|
uint_t
|
|
num_logs(nvlist_t *nv)
|
|
{
|
|
uint_t nlogs = 0;
|
|
uint_t c, children;
|
|
nvlist_t **child;
|
|
|
|
if (nvlist_lookup_nvlist_array(nv, ZPOOL_CONFIG_CHILDREN,
|
|
&child, &children) != 0)
|
|
return (0);
|
|
|
|
for (c = 0; c < children; c++) {
|
|
uint64_t is_log = B_FALSE;
|
|
|
|
(void) nvlist_lookup_uint64(child[c], ZPOOL_CONFIG_IS_LOG,
|
|
&is_log);
|
|
if (is_log)
|
|
nlogs++;
|
|
}
|
|
return (nlogs);
|
|
}
|
|
|
|
/* Find the max element in an array of uint64_t values */
|
|
uint64_t
|
|
array64_max(uint64_t array[], unsigned int len)
|
|
{
|
|
uint64_t max = 0;
|
|
int i;
|
|
for (i = 0; i < len; i++)
|
|
max = MAX(max, array[i]);
|
|
|
|
return (max);
|
|
}
|
|
|
|
/*
|
|
* Find highest one bit set.
|
|
* Returns bit number + 1 of highest bit that is set, otherwise returns 0.
|
|
*/
|
|
int
|
|
highbit64(uint64_t i)
|
|
{
|
|
if (i == 0)
|
|
return (0);
|
|
|
|
return (NBBY * sizeof (uint64_t) - __builtin_clzll(i));
|
|
}
|
|
|
|
/*
|
|
* Find lowest one bit set.
|
|
* Returns bit number + 1 of lowest bit that is set, otherwise returns 0.
|
|
*/
|
|
int
|
|
lowbit64(uint64_t i)
|
|
{
|
|
if (i == 0)
|
|
return (0);
|
|
|
|
return (__builtin_ffsll(i));
|
|
}
|