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/*
* The Sleuth Kit
*
*
* Brian Carrier [carrier <at> sleuthkit [dot] org]
* Copyright (c) 2006-2008 Brian Carrier, Basis Technology. All rights reserved.
*/
/** \file mymalloc.c
* These functions allocate and realocate memory and set the error handling functions
* when an error occurs.
*/
/*++
* NAME
* tsk_malloc 3
* SUMMARY
* memory management wrappers
* SYNOPSIS
* #include <tsk_malloc.h>
*
* char *tsk_malloc(len)
* int len;
*
* char *tsk_realloc(ptr, len)
* char *ptr;
* int len;
*
* char *mystrdup(str)
*const char *str;
*DESCRIPTION
* This module performs low-level memory management with error
* handling. A call of these functions either succeeds or it does
* not return at all.
*
* tsk_malloc() allocates the requested amount of memory. The memory
* is not set to zero.
*
* tsk_realloc() resizes memory obtained from tsk_malloc() or tsk_realloc()
* to the requested size. The result pointer value may differ from
* that given via the \fBptr\fR argument.
*
* mystrdup() returns a dynamic-memory copy of its null-terminated
* argument. This routine uses tsk_malloc().
* SEE ALSO
* error(3) error reporting module.
* DIAGNOSTICS
* Fatal errors: the requested amount of memory is not available.
* LICENSE
* .ad
* .fi
* The IBM Public Licence must be distributed with this software.
* AUTHOR(S)
* Wietse Venema
* IBM T.J. Watson Research
* P.O. Box 704
* Yorktown Heights, NY 10598, USA
*--*/
#include "tsk_base_i.h"
#include <errno.h>
/* tsk_malloc - allocate and zero memory and set error values on error
*/
void *
tsk_malloc(size_t len)
{
void *ptr;
if ((ptr = malloc(len)) == 0) {
tsk_error_reset();
tsk_errno = TSK_ERR_AUX_MALLOC;
snprintf(tsk_errstr, TSK_ERRSTR_L, "tsk_malloc: %s",
strerror(errno));
}
else {
memset(ptr, 0, len);
}
return (ptr);
}
/* tsk_realloc - reallocate memory and set error values if needed */
void *
tsk_realloc(void *ptr, size_t len)
{
if ((ptr = realloc(ptr, len)) == 0) {
tsk_error_reset();
tsk_errno = TSK_ERR_AUX_MALLOC;
snprintf(tsk_errstr, TSK_ERRSTR_L, "tsk_realloc: %s",
strerror(errno));
}
return (ptr);
}
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