22 static struct wpabuf_trace * wpabuf_get_trace(const struct wpabuf *buf)  in wpabuf_get_trace()  argument
25 		((const u8 *) buf - sizeof(struct wpabuf_trace));  in wpabuf_get_trace()
30 static void wpabuf_overflow(const struct wpabuf *buf, size_t len)  in wpabuf_overflow()  argument
33 	struct wpabuf_trace *trace = wpabuf_get_trace(buf);  in wpabuf_overflow()
40 		   buf, (unsigned long) buf->size, (unsigned long) buf->used,  in wpabuf_overflow()
49 	struct wpabuf *buf = *_buf;  in wpabuf_resize()  local
54 	if (buf == NULL) {  in wpabuf_resize()
60 	trace = wpabuf_get_trace(buf);  in wpabuf_resize()
69 	if (buf->used + add_len > buf->size) {  in wpabuf_resize()
71 		if (buf->flags & WPABUF_FLAG_EXT_DATA) {  in wpabuf_resize()
72 			nbuf = os_realloc(buf->buf, buf->used + add_len);  in wpabuf_resize()
75 			os_memset(nbuf + buf->used, 0, add_len);  in wpabuf_resize()
76 			buf->buf = nbuf;  in wpabuf_resize()
81 					  buf->used + add_len);  in wpabuf_resize()
85 			buf = (struct wpabuf *) (trace + 1);  in wpabuf_resize()
87 				  sizeof(struct wpabuf) + buf->used, 0,  in wpabuf_resize()
90 			nbuf = os_realloc(buf, sizeof(struct wpabuf) +  in wpabuf_resize()
91 					  buf->used + add_len);  in wpabuf_resize()
94 			buf = (struct wpabuf *) nbuf;  in wpabuf_resize()
95 			os_memset(nbuf + sizeof(struct wpabuf) + buf->used, 0,  in wpabuf_resize()
98 			buf->buf = (u8 *) (buf + 1);  in wpabuf_resize()
99 			*_buf = buf;  in wpabuf_resize()
101 		buf->size = buf->used + add_len;  in wpabuf_resize()
118 	struct wpabuf *buf;  in wpabuf_alloc()  local
122 	buf = (struct wpabuf *) (trace + 1);  in wpabuf_alloc()
124 	struct wpabuf *buf = os_zalloc(sizeof(struct wpabuf) + len);  in wpabuf_alloc()
125 	if (buf == NULL)  in wpabuf_alloc()
129 	buf->size = len;  in wpabuf_alloc()
130 	buf->buf = (u8 *) (buf + 1);  in wpabuf_alloc()
131 	return buf;  in wpabuf_alloc()
140 	struct wpabuf *buf;  in wpabuf_alloc_ext_data()  local
144 	buf = (struct wpabuf *) (trace + 1);  in wpabuf_alloc_ext_data()
146 	struct wpabuf *buf = os_zalloc(sizeof(struct wpabuf));  in wpabuf_alloc_ext_data()
147 	if (buf == NULL)  in wpabuf_alloc_ext_data()
151 	buf->size = len;  in wpabuf_alloc_ext_data()
152 	buf->used = len;  in wpabuf_alloc_ext_data()
153 	buf->buf = data;  in wpabuf_alloc_ext_data()
154 	buf->flags |= WPABUF_FLAG_EXT_DATA;  in wpabuf_alloc_ext_data()
156 	return buf;  in wpabuf_alloc_ext_data()
162 	struct wpabuf *buf = wpabuf_alloc(len);  in wpabuf_alloc_copy()  local
163 	if (buf)  in wpabuf_alloc_copy()
164 		wpabuf_put_data(buf, data, len);  in wpabuf_alloc_copy()
165 	return buf;  in wpabuf_alloc_copy()
171 	struct wpabuf *buf = wpabuf_alloc(wpabuf_len(src));  in wpabuf_dup()  local
172 	if (buf)  in wpabuf_dup()
173 		wpabuf_put_data(buf, wpabuf_head(src), wpabuf_len(src));  in wpabuf_dup()
174 	return buf;  in wpabuf_dup()
182 void wpabuf_free(struct wpabuf *buf)  in wpabuf_free()  argument
186 	if (buf == NULL)  in wpabuf_free()
188 	trace = wpabuf_get_trace(buf);  in wpabuf_free()
195 	if (buf->flags & WPABUF_FLAG_EXT_DATA)  in wpabuf_free()
196 		os_free(buf->buf);  in wpabuf_free()
199 	if (buf == NULL)  in wpabuf_free()
201 	if (buf->flags & WPABUF_FLAG_EXT_DATA)  in wpabuf_free()
202 		os_free(buf->buf);  in wpabuf_free()
203 	os_free(buf);  in wpabuf_free()
208 void wpabuf_clear_free(struct wpabuf *buf)  in wpabuf_clear_free()  argument
210 	if (buf) {  in wpabuf_clear_free()
211 		os_memset(wpabuf_mhead(buf), 0, wpabuf_len(buf));  in wpabuf_clear_free()
212 		wpabuf_free(buf);  in wpabuf_clear_free()
217 void * wpabuf_put(struct wpabuf *buf, size_t len)  in wpabuf_put()  argument
219 	void *tmp = wpabuf_mhead_u8(buf) + wpabuf_len(buf);  in wpabuf_put()
220 	buf->used += len;  in wpabuf_put()
221 	if (buf->used > buf->size) {  in wpabuf_put()
222 		wpabuf_overflow(buf, len);  in wpabuf_put()
277 struct wpabuf * wpabuf_zeropad(struct wpabuf *buf, size_t len)  in wpabuf_zeropad()  argument
282 	if (buf == NULL)  in wpabuf_zeropad()
285 	blen = wpabuf_len(buf);  in wpabuf_zeropad()
287 		return buf;  in wpabuf_zeropad()
292 		wpabuf_put_buf(ret, buf);  in wpabuf_zeropad()
294 	wpabuf_free(buf);  in wpabuf_zeropad()
300 void wpabuf_printf(struct wpabuf *buf, char *fmt, ...)  in wpabuf_printf()  argument
303 	void *tmp = wpabuf_mhead_u8(buf) + wpabuf_len(buf);  in wpabuf_printf()
307 	res = vsnprintf(tmp, buf->size - buf->used, fmt, ap);  in wpabuf_printf()
309 	if (res < 0 || (size_t) res >= buf->size - buf->used)  in wpabuf_printf()
310 		wpabuf_overflow(buf, res);  in wpabuf_printf()
311 	buf->used += res;  in wpabuf_printf()