29 static struct wpabuf_trace * wpabuf_get_trace(const struct wpabuf *buf)  in wpabuf_get_trace()  argument
32 		((const u8 *) buf - sizeof(struct wpabuf_trace));  in wpabuf_get_trace()
37 static void wpabuf_overflow(const struct wpabuf *buf, size_t len)  in wpabuf_overflow()  argument
40 	struct wpabuf_trace *trace = wpabuf_get_trace(buf);  in wpabuf_overflow()
47 		   buf, (unsigned long) buf->size, (unsigned long) buf->used,  in wpabuf_overflow()
54 	struct wpabuf *buf = *_buf;  in wpabuf_resize()  local
59 	if (buf == NULL) {  in wpabuf_resize()
65 	trace = wpabuf_get_trace(buf);  in wpabuf_resize()
73 	if (buf->used + add_len > buf->size) {  in wpabuf_resize()
75 		if (buf->flags & WPABUF_FLAG_EXT_DATA) {  in wpabuf_resize()
76 			nbuf = os_realloc(buf->buf, buf->used + add_len);  in wpabuf_resize()
79 			memset(nbuf + buf->used, 0, add_len);  in wpabuf_resize()
80 			buf->buf = nbuf;  in wpabuf_resize()
85 					  buf->used + add_len);  in wpabuf_resize()
89 			buf = (struct wpabuf *) (trace + 1);  in wpabuf_resize()
91 				  sizeof(struct wpabuf) + buf->used, 0,  in wpabuf_resize()
94 			nbuf = (unsigned char*)os_realloc(buf, sizeof(struct wpabuf) +  in wpabuf_resize()
95 					  buf->used + add_len);  in wpabuf_resize()
98 			buf = (struct wpabuf *) nbuf;  in wpabuf_resize()
99 			memset(nbuf + sizeof(struct wpabuf) + buf->used, 0,  in wpabuf_resize()
102 			buf->buf = (u8 *) (buf + 1);  in wpabuf_resize()
103 			*_buf = buf;  in wpabuf_resize()
105 		buf->size = buf->used + add_len;  in wpabuf_resize()
122 	struct wpabuf *buf;  in wpabuf_alloc()  local
126 	buf = (struct wpabuf *) (trace + 1);  in wpabuf_alloc()
128 	struct wpabuf *buf = (struct wpabuf *)os_zalloc(sizeof(struct wpabuf) + len);  in wpabuf_alloc()
129 	if (buf == NULL)  in wpabuf_alloc()
133 	buf->size = len;  in wpabuf_alloc()
134 	buf->buf = (u8 *) (buf + 1);  in wpabuf_alloc()
135 	return buf;  in wpabuf_alloc()
143 	struct wpabuf *buf;  in wpabuf_alloc_ext_data()  local
147 	buf = (struct wpabuf *) (trace + 1);  in wpabuf_alloc_ext_data()
149 	struct wpabuf *buf = (struct wpabuf *)os_zalloc(sizeof(struct wpabuf));  in wpabuf_alloc_ext_data()
150 	if (buf == NULL)  in wpabuf_alloc_ext_data()
154 	buf->size = len;  in wpabuf_alloc_ext_data()
155 	buf->used = len;  in wpabuf_alloc_ext_data()
156 	buf->buf = data;  in wpabuf_alloc_ext_data()
157 	buf->flags |= WPABUF_FLAG_EXT_DATA;  in wpabuf_alloc_ext_data()
159 	return buf;  in wpabuf_alloc_ext_data()
165 	struct wpabuf *buf = wpabuf_alloc(len);  in wpabuf_alloc_copy()  local
166 	if (buf)  in wpabuf_alloc_copy()
167 		wpabuf_put_data(buf, data, len);  in wpabuf_alloc_copy()
168 	return buf;  in wpabuf_alloc_copy()
174 	struct wpabuf *buf = wpabuf_alloc(wpabuf_len(src));  in wpabuf_dup()  local
175 	if (buf)  in wpabuf_dup()
176 		wpabuf_put_data(buf, wpabuf_head(src), wpabuf_len(src));  in wpabuf_dup()
177 	return buf;  in wpabuf_dup()
185 void wpabuf_free(struct wpabuf *buf)  in wpabuf_free()  argument
189 	if (buf == NULL)  in wpabuf_free()
191 	trace = wpabuf_get_trace(buf);  in wpabuf_free()
197 	if (buf->flags & WPABUF_FLAG_EXT_DATA)  in wpabuf_free()
198 		os_free(buf->buf);  in wpabuf_free()
201 	if (buf == NULL)  in wpabuf_free()
203 	if (buf->flags & WPABUF_FLAG_EXT_DATA)  in wpabuf_free()
204 		os_free(buf->buf);  in wpabuf_free()
205 	os_free(buf);  in wpabuf_free()
210 void wpabuf_clear_free(struct wpabuf *buf)  in wpabuf_clear_free()  argument
212 	if (buf) {  in wpabuf_clear_free()
213 		os_memset(wpabuf_mhead(buf), 0, wpabuf_len(buf));  in wpabuf_clear_free()
214 		wpabuf_free(buf);  in wpabuf_clear_free()
219 void * wpabuf_put(struct wpabuf *buf, size_t len)  in wpabuf_put()  argument
221 	void *tmp = wpabuf_mhead_u8(buf) + wpabuf_len(buf);  in wpabuf_put()
222 	buf->used += len;  in wpabuf_put()
223 	if (buf->used > buf->size) {  in wpabuf_put()
224 		wpabuf_overflow(buf, len);  in wpabuf_put()
279 struct wpabuf * wpabuf_zeropad(struct wpabuf *buf, size_t len)  in wpabuf_zeropad()  argument
284 	if (buf == NULL)  in wpabuf_zeropad()
287 	blen = wpabuf_len(buf);  in wpabuf_zeropad()
289 		return buf;  in wpabuf_zeropad()
294 		wpabuf_put_buf(ret, buf);  in wpabuf_zeropad()
296 	wpabuf_free(buf);  in wpabuf_zeropad()
301 void wpabuf_printf(struct wpabuf *buf, const char *fmt, ...)  in wpabuf_printf()  argument
304 	void *tmp = wpabuf_mhead_u8(buf) + wpabuf_len(buf);  in wpabuf_printf()
308         res = vsnprintf(tmp, buf->size - buf->used, fmt, ap);  in wpabuf_printf()
310 	if (res < 0 || (size_t) res >= buf->size - buf->used)  in wpabuf_printf()
311 		wpabuf_overflow(buf, res);  in wpabuf_printf()
312 	buf->used += res;  in wpabuf_printf()