54 	struct fmemopen_cookie *ck;  in fmemopen()  local
84 	ck = malloc(sizeof(struct fmemopen_cookie));  in fmemopen()
85 	if (ck == NULL) {  in fmemopen()
89 	ck->off  = 0;  in fmemopen()
90 	ck->size = size;  in fmemopen()
93 	ck->own = ((ck->buf = buf) == NULL);  in fmemopen()
94 	if (ck->own) {  in fmemopen()
95 		ck->buf = malloc(size);  in fmemopen()
96 		if (ck->buf == NULL) {  in fmemopen()
97 			free(ck);  in fmemopen()
106 	if (ck->own || mode[0] == 'w') {  in fmemopen()
107 		ck->buf[0] = '\0';  in fmemopen()
111 	ck->bin = strchr(mode, 'b') != NULL;  in fmemopen()
128 		ck->off = ck->len = strnlen(ck->buf, ck->size);  in fmemopen()
131 		ck->len = size;  in fmemopen()
134 		ck->len = 0;  in fmemopen()
139 	f = funopen(ck,  in fmemopen()
145 		if (ck->own)  in fmemopen()
146 			free(ck->buf);  in fmemopen()
147 		free(ck);  in fmemopen()
166 	struct fmemopen_cookie *ck = cookie;  in fmemopen_read()  local
168 	if (nbytes > ck->len - ck->off)  in fmemopen_read()
169 		nbytes = ck->len - ck->off;  in fmemopen_read()
174 	memcpy(buf, ck->buf + ck->off, nbytes);  in fmemopen_read()
176 	ck->off += nbytes;  in fmemopen_read()
184 	struct fmemopen_cookie *ck = cookie;  in fmemopen_write()  local
186 	if (nbytes > ck->size - ck->off)  in fmemopen_write()
187 		nbytes = ck->size - ck->off;  in fmemopen_write()
192 	memcpy(ck->buf + ck->off, buf, nbytes);  in fmemopen_write()
194 	ck->off += nbytes;  in fmemopen_write()
196 	if (ck->off > ck->len)  in fmemopen_write()
197 		ck->len = ck->off;  in fmemopen_write()
205 	if (!ck->bin && ck->off < ck->size && ck->buf[ck->off - 1] != '\0')  in fmemopen_write()
206 		ck->buf[ck->off] = '\0';  in fmemopen_write()
214 	struct fmemopen_cookie *ck = cookie;  in fmemopen_seek()  local
219 		if (offset > ck->size) {  in fmemopen_seek()
223 		ck->off = offset;  in fmemopen_seek()
227 		if (ck->off + offset > ck->size) {  in fmemopen_seek()
231 		ck->off += offset;  in fmemopen_seek()
235 		if (offset > 0 || -offset > ck->len) {  in fmemopen_seek()
239 		ck->off = ck->len + offset;  in fmemopen_seek()
247 	return (ck->off);  in fmemopen_seek()
253 	struct fmemopen_cookie *ck = cookie;  in fmemopen_close()  local
255 	if (ck->own)  in fmemopen_close()
256 		free(ck->buf);  in fmemopen_close()
258 	free(ck);  in fmemopen_close()