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136 lines
2.4 KiB
C
136 lines
2.4 KiB
C
/*
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* CDDL HEADER START
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*
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* The contents of this file are subject to the terms of the
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* Common Development and Distribution License (the "License").
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* You may not use this file except in compliance with the License.
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*
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* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
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* or http://www.opensolaris.org/os/licensing.
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* See the License for the specific language governing permissions
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* and limitations under the License.
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*
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* When distributing Covered Code, include this CDDL HEADER in each
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* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
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* If applicable, add the following below this CDDL HEADER, with the
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* fields enclosed by brackets "[]" replaced with your own identifying
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* information: Portions Copyright [yyyy] [name of copyright owner]
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*
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* CDDL HEADER END
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*/
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/*
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* Copyright (c) 2004, 2010, Oracle and/or its affiliates. All rights reserved.
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*/
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#include "libuutil_common.h"
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#include <stdarg.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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void *
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uu_zalloc(size_t n)
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{
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void *p = malloc(n);
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if (p == NULL) {
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uu_set_error(UU_ERROR_SYSTEM);
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return (NULL);
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}
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(void) memset(p, 0, n);
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return (p);
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}
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void
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uu_free(void *p)
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{
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free(p);
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}
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char *
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uu_strdup(const char *str)
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{
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char *buf = NULL;
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if (str != NULL) {
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size_t sz;
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sz = strlen(str) + 1;
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buf = uu_zalloc(sz);
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if (buf != NULL)
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(void) memcpy(buf, str, sz);
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}
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return (buf);
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}
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/*
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* Duplicate up to n bytes of a string. Kind of sort of like
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* strdup(strlcpy(s, n)).
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*/
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char *
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uu_strndup(const char *s, size_t n)
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{
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size_t len;
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char *p;
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len = strnlen(s, n);
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p = uu_zalloc(len + 1);
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if (p == NULL)
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return (NULL);
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if (len > 0)
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(void) memcpy(p, s, len);
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p[len] = '\0';
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return (p);
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}
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/*
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* Duplicate a block of memory. Combines malloc with memcpy, much as
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* strdup combines malloc, strlen, and strcpy.
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*/
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void *
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uu_memdup(const void *buf, size_t sz)
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{
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void *p;
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p = uu_zalloc(sz);
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if (p == NULL)
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return (NULL);
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(void) memcpy(p, buf, sz);
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return (p);
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}
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char *
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uu_msprintf(const char *format, ...)
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{
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va_list args;
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char attic[1];
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uint_t M, m;
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char *b;
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va_start(args, format);
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M = vsnprintf(attic, 1, format, args);
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va_end(args);
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for (;;) {
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m = M;
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if ((b = uu_zalloc(m + 1)) == NULL)
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return (NULL);
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va_start(args, format);
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M = vsnprintf(b, m + 1, format, args);
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va_end(args);
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if (M == m)
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break; /* sizes match */
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uu_free(b);
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}
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return (b);
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}
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