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/* Netfilter Driver for IPSec VPN Client
*
* Copyright(c) 2012 Samsung Electronics
*
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
/*
* kernel_alloc.
*
* Engine memory allocation API implementation for kernel space.
*
*/
#include "sshincludes.h"
#include "kernel_alloc.h"
#include "kernel_mutex.h"
void *
ssh_malloc_flags(size_t size, SshUInt32 flags)
{
return ssh_kernel_alloc(size, flags);
}
void *
ssh_malloc(size_t size)
{
return ssh_malloc_flags(size, SSH_KERNEL_ALLOC_NOWAIT);
}
void *
ssh_realloc_flags(void *oldptr, size_t oldsize, size_t newsize,
SshUInt32 flags)
{
void * newptr;
if (oldptr == NULL)
return ssh_kernel_alloc(newsize, flags);
if (newsize <= oldsize)
return oldptr;
if ((newptr = ssh_kernel_alloc(newsize, flags)) == NULL)
return NULL;
/* newsize > oldsize, see above */
if (oldsize > 0)
memcpy(newptr, oldptr, oldsize);
/* Success, thus we can release the old memory */
ssh_kernel_free(oldptr);
return newptr;
}
void *
ssh_realloc(void * oldptr, size_t oldsize, size_t newsize)
{
return ssh_realloc_flags(oldptr, oldsize, newsize, SSH_KERNEL_ALLOC_NOWAIT);
}
/* coverity[ -tainted_data_sink : arg-0 ] */
void ssh_free (void * ptr)
{
if (ptr != NULL)
ssh_kernel_free(ptr);
}
void*
ssh_calloc_flags (size_t nitems, size_t isize, SshUInt32 flags)
{
void * ptr;
unsigned long size;
size = isize * nitems;
if ((ptr = ssh_malloc_flags(size ? size : 1, flags)) == NULL)
return NULL;
if (size > 0)
memset(ptr, 0, size);
return ptr;
}
void *
ssh_calloc(size_t nitems, size_t isize)
{
return ssh_calloc_flags(nitems, isize, SSH_KERNEL_ALLOC_NOWAIT);
}
void *ssh_strdup (const void * p)
{
const char * str;
char * cp;
SSH_PRECOND(p != NULL);
str = (const char *) p;
if ((cp = (char *) ssh_malloc(strlen(str) + 1)) == NULL)
return NULL;
strcpy(cp, str);
return (void *) cp;
}
void *ssh_memdup(const void * p, size_t len)
{
void * cp;
if ((cp = ssh_malloc(len + 1)) == NULL)
return NULL;
memcpy(cp, p, (size_t)len);
((unsigned char *) cp)[len] = '\0';
return cp;
}
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