wpabuf.h File Reference

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Classes
struct	wpabuf
Functions
struct wpabuf *	wpabuf_alloc (size_t len)
struct wpabuf *	wpabuf_alloc_copy (const void *data, size_t len)
struct wpabuf *	wpabuf_alloc_ext_data (u8 *data, size_t len)
struct wpabuf *	wpabuf_concat (struct wpabuf *a, struct wpabuf *b)
struct wpabuf *	wpabuf_dup (const struct wpabuf *src)
void	wpabuf_free (struct wpabuf *buf)
static const void *	wpabuf_head (const struct wpabuf *buf)
static const u8 *	wpabuf_head_u8 (const struct wpabuf *buf)
static size_t	wpabuf_len (const struct wpabuf *buf)
static void *	wpabuf_mhead (struct wpabuf *buf)
static u8 *	wpabuf_mhead_u8 (struct wpabuf *buf)
void	wpabuf_printf (struct wpabuf *buf, char *fmt,...) PRINTF_FORMAT(2
void *	wpabuf_put (struct wpabuf *buf, size_t len)
static void	wpabuf_put_be16 (struct wpabuf *buf, u16 data)
static void	wpabuf_put_be24 (struct wpabuf *buf, u32 data)
static void	wpabuf_put_be32 (struct wpabuf *buf, u32 data)
static void	wpabuf_put_buf (struct wpabuf *dst, const struct wpabuf *src)
static void	wpabuf_put_data (struct wpabuf *buf, const void *data, size_t len)
static void	wpabuf_put_le16 (struct wpabuf *buf, u16 data)
static void	wpabuf_put_str (struct wpabuf *dst, const char *str)
static void	wpabuf_put_u8 (struct wpabuf *buf, u8 data)
int	wpabuf_resize (struct wpabuf **buf, size_t add_len)
static void	wpabuf_set (struct wpabuf *buf, const void *data, size_t len)
void static size_t	wpabuf_size (const struct wpabuf *buf)
static size_t	wpabuf_tailroom (const struct wpabuf *buf)
struct wpabuf *	wpabuf_zeropad (struct wpabuf *buf, size_t len)

---

Function Documentation

struct wpabuf* wpabuf_alloc

(

size_t

len

)

[read]

wpabuf_alloc - Allocate a wpabuf of the given size : Length for the allocated buffer Returns: Buffer to the allocated wpabuf or NULL on failure

Definition at line 118 of file wpabuf.c.

struct wpabuf* wpabuf_alloc_copy	(	const void *	data,
		size_t	len
	)		[read]

Definition at line 163 of file wpabuf.c.

struct wpabuf* wpabuf_alloc_ext_data	(	u8 *	data,
		size_t	len
	)		[read]

Definition at line 139 of file wpabuf.c.

struct wpabuf* wpabuf_concat	(	struct wpabuf *	a,
		struct wpabuf *	b
	)		[read]

wpabuf_concat - Concatenate two buffers into a newly allocated one : First buffer : Second buffer Returns: wpabuf with concatenated a + b data or NULL on failure

Both buffers a and b will be freed regardless of the return value. Input buffers can be NULL which is interpreted as an empty buffer.

Definition at line 229 of file wpabuf.c.

struct wpabuf* wpabuf_dup

(

const struct wpabuf *

src

)

[read]

Definition at line 172 of file wpabuf.c.

void wpabuf_free

(

struct wpabuf *

buf

)

wpabuf_free - Free a wpabuf : wpabuf buffer

Definition at line 185 of file wpabuf.c.

static const void* wpabuf_head

(

const struct wpabuf *

buf

)

[inline, static]

wpabuf_head - Get pointer to the head of the buffer data : wpabuf buffer Returns: Pointer to the head of the buffer data

Definition at line 79 of file wpabuf.h.

static const u8* wpabuf_head_u8

(

const struct wpabuf *

buf

)

[inline, static]

Definition at line 86 of file wpabuf.h.

static size_t wpabuf_len

(

const struct wpabuf *

buf

)

[inline, static]

wpabuf_len - Get the current length of a wpabuf buffer data : wpabuf buffer Returns: Currently used length of the buffer

Definition at line 59 of file wpabuf.h.

static void* wpabuf_mhead

(

struct wpabuf *

buf

)

[inline, static]

wpabuf_mhead - Get modifiable pointer to the head of the buffer data : wpabuf buffer Returns: Pointer to the head of the buffer data

Definition at line 96 of file wpabuf.h.

static u8* wpabuf_mhead_u8

(

struct wpabuf *

buf

)

[inline, static]

Definition at line 103 of file wpabuf.h.

void wpabuf_printf	(	struct wpabuf *	buf,
		char *	fmt,
			...
	)

void* wpabuf_put	(	struct wpabuf *	buf,
		size_t	len
	)

Definition at line 209 of file wpabuf.c.

static void wpabuf_put_be16	(	struct wpabuf *	buf,
		u16	data
	)		[inline, static]

Definition at line 120 of file wpabuf.h.

static void wpabuf_put_be24	(	struct wpabuf *	buf,
		u32	data
	)		[inline, static]

Definition at line 126 of file wpabuf.h.

static void wpabuf_put_be32	(	struct wpabuf *	buf,
		u32	data
	)		[inline, static]

Definition at line 132 of file wpabuf.h.

static void wpabuf_put_buf	(	struct wpabuf *	dst,
		const struct wpabuf *	src
	)		[inline, static]

Definition at line 145 of file wpabuf.h.

static void wpabuf_put_data	(	struct wpabuf *	buf,
		const void *	data,
		size_t	len
	)		[inline, static]

Definition at line 138 of file wpabuf.h.

static void wpabuf_put_le16	(	struct wpabuf *	buf,
		u16	data
	)		[inline, static]

Definition at line 114 of file wpabuf.h.

static void wpabuf_put_str	(	struct wpabuf *	dst,
		const char *	str
	)		[inline, static]

Definition at line 157 of file wpabuf.h.

static void wpabuf_put_u8	(	struct wpabuf *	buf,
		u8	data
	)		[inline, static]

Definition at line 108 of file wpabuf.h.

int wpabuf_resize	(	struct wpabuf **	buf,
		size_t	add_len
	)

Definition at line 53 of file wpabuf.c.

static void wpabuf_set	(	struct wpabuf *	buf,
		const void *	data,
		size_t	len
	)		[inline, static]

Definition at line 151 of file wpabuf.h.

void static size_t wpabuf_size

(

const struct wpabuf *

buf

)

[inline, static]

wpabuf_size - Get the currently allocated size of a wpabuf buffer : wpabuf buffer Returns: Currently allocated size of the buffer

Definition at line 49 of file wpabuf.h.

static size_t wpabuf_tailroom

(

const struct wpabuf *

buf

)

[inline, static]

wpabuf_tailroom - Get size of available tail room in the end of the buffer : wpabuf buffer Returns: Tail room (in bytes) of available space in the end of the buffer

Definition at line 69 of file wpabuf.h.

struct wpabuf* wpabuf_zeropad	(	struct wpabuf *	buf,
		size_t	len
	)		[read]

wpabuf_zeropad - Pad buffer with 0x00 octets (prefix) to specified length : Buffer to be padded : Length for the padded buffer Returns: wpabuf padded to len octets or NULL on failure

If buf is longer than len octets or of same size, it will be returned as-is. Otherwise a new buffer is allocated and prefixed with 0x00 octets followed by the source data. The source buffer will be freed on error, i.e., caller will only be responsible on freeing the returned buffer. If buf is NULL, NULL will be returned.

Definition at line 269 of file wpabuf.c.