mirror of
https://git.proxmox.com/git/mirror_zfs.git
synced 2024-12-27 11:29:36 +03:00
136 lines
2.4 KiB
C
136 lines
2.4 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 (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
|
|
*/
|
|
|
|
#include "libuutil_common.h"
|
|
|
|
#include <stdarg.h>
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
void *
|
|
uu_zalloc(size_t n)
|
|
{
|
|
void *p = malloc(n);
|
|
|
|
if (p == NULL) {
|
|
uu_set_error(UU_ERROR_SYSTEM);
|
|
return (NULL);
|
|
}
|
|
|
|
(void) memset(p, 0, n);
|
|
|
|
return (p);
|
|
}
|
|
|
|
void
|
|
uu_free(void *p)
|
|
{
|
|
free(p);
|
|
}
|
|
|
|
char *
|
|
uu_strdup(const char *str)
|
|
{
|
|
char *buf = NULL;
|
|
|
|
if (str != NULL) {
|
|
size_t sz;
|
|
|
|
sz = strlen(str) + 1;
|
|
buf = uu_zalloc(sz);
|
|
if (buf != NULL)
|
|
(void) memcpy(buf, str, sz);
|
|
}
|
|
return (buf);
|
|
}
|
|
|
|
/*
|
|
* Duplicate up to n bytes of a string. Kind of sort of like
|
|
* strdup(strlcpy(s, n)).
|
|
*/
|
|
char *
|
|
uu_strndup(const char *s, size_t n)
|
|
{
|
|
size_t len;
|
|
char *p;
|
|
|
|
len = strnlen(s, n);
|
|
p = uu_zalloc(len + 1);
|
|
if (p == NULL)
|
|
return (NULL);
|
|
|
|
if (len > 0)
|
|
(void) memcpy(p, s, len);
|
|
p[len] = '\0';
|
|
|
|
return (p);
|
|
}
|
|
|
|
/*
|
|
* Duplicate a block of memory. Combines malloc with memcpy, much as
|
|
* strdup combines malloc, strlen, and strcpy.
|
|
*/
|
|
void *
|
|
uu_memdup(const void *buf, size_t sz)
|
|
{
|
|
void *p;
|
|
|
|
p = uu_zalloc(sz);
|
|
if (p == NULL)
|
|
return (NULL);
|
|
(void) memcpy(p, buf, sz);
|
|
return (p);
|
|
}
|
|
|
|
char *
|
|
uu_msprintf(const char *format, ...)
|
|
{
|
|
va_list args;
|
|
char attic[1];
|
|
uint_t M, m;
|
|
char *b;
|
|
|
|
va_start(args, format);
|
|
M = vsnprintf(attic, 1, format, args);
|
|
va_end(args);
|
|
|
|
for (;;) {
|
|
m = M;
|
|
if ((b = uu_zalloc(m + 1)) == NULL)
|
|
return (NULL);
|
|
|
|
va_start(args, format);
|
|
M = vsnprintf(b, m + 1, format, args);
|
|
va_end(args);
|
|
|
|
if (M == m)
|
|
break; /* sizes match */
|
|
|
|
uu_free(b);
|
|
}
|
|
|
|
return (b);
|
|
}
|