Memory Safety

Wrappers around string.h functions that force sizeof() safety. More...

Macros
#define	MEM_ZERO(ptr, size)
	Wraps memset to explicitly write 0s to a block of memory.
#define	MEM_ZERO_STRUCT(ptr)
	Zeroes out a struct securely using the pointer's inner type size.
#define	MEM_ZERO_ARRAY(arr)
	Zeroes out a static array securely using the array's full size.
#define	MEM_COPY(dst, src, size)
	Wraps memmove for standard memory copying.
#define	MEM_COPY_STRUCT(dst, src)
	Safely copies data from one struct pointer to another.
#define	MEM_COPY_ARRAY(dst, src)
	Safely copies data from one static array to another.

Detailed Description

Wrappers around string.h functions that force sizeof() safety.

Macro Definition Documentation

MEM_COPY

#define MEM_COPY	(		dst,
			src,
			size )

Value:

memmove((dst), (src), (size))

Wraps memmove for standard memory copying.

Definition at line 410 of file base_macros.h.

MEM_COPY_ARRAY

#define MEM_COPY_ARRAY	(		dst,
			src )

Value:

MEM_COPY((dst), (src), MIN(sizeof(dst), sizeof(src)))

Safely copies data from one static array to another.

Note

Automatically clamps the copy size to the smallest array to prevent overflows.

Parameters

dst	Destination array.
src	Source array.

Definition at line 426 of file base_macros.h.

MEM_COPY_STRUCT

#define MEM_COPY_STRUCT	(		dst,
			src )

Value:

MEM_COPY((dst), (src), MIN(sizeof(*(dst)), sizeof(*(src))))

Safely copies data from one struct pointer to another.

Note

Automatically clamps the copy size to the smallest of either struct to prevent overflows.

Parameters

dst	Pointer to the destination struct.
src	Pointer to the source struct.

Definition at line 418 of file base_macros.h.

MEM_ZERO

#define MEM_ZERO	(		ptr,
			size )

Value:

memset((ptr), 0, (size))

Wraps memset to explicitly write 0s to a block of memory.

Definition at line 395 of file base_macros.h.

MEM_ZERO_ARRAY

#define MEM_ZERO_ARRAY

(

arr

)

Value:

MEM_ZERO((arr), sizeof(arr))

Zeroes out a static array securely using the array's full size.

Parameters

arr	The statically allocated array.

Definition at line 407 of file base_macros.h.

MEM_ZERO_STRUCT

#define MEM_ZERO_STRUCT

(

ptr

)

Value:

MEM_ZERO((ptr), sizeof(*(ptr)))

Zeroes out a struct securely using the pointer's inner type size.

Parameters

ptr	Pointer to the struct.

Definition at line 401 of file base_macros.h.