1#include "stdio_impl.h" 2 3/* This function makes no attempt to protect the user from his/her own 4 * stupidity. If called any time but when then ISO C standard specifically 5 * allows it, all hell can and will break loose, especially with threads! 6 * 7 * This implementation ignores all arguments except the buffering type, 8 * and uses the existing buffer allocated alongside the FILE object. 9 * In the case of stderr where the preexisting buffer is length 1, it 10 * is not possible to set line buffering or full buffering. */ 11 12int setvbuf(FILE *restrict f, char *restrict buf, int type, size_t size) 13{ 14 f->lbf = EOF; 15 16 if (type == _IONBF) 17 f->buf_size = 0; 18 else if (type == _IOLBF) 19 f->lbf = '\n'; 20 21 f->flags |= F_SVB; 22 23 return 0; 24} 25