16 	sb->alloc = sb->len = 0;  in strbuf_init()
35 		*sz = sb->len;  in strbuf_detach()
43 	size_t nr = sb->len + extra + 1;  in strbuf_grow()
48 	if (nr <= sb->len)  in strbuf_grow()
73 	sb->buf[sb->len++] = c;  in strbuf_addch()
74 	sb->buf[sb->len] = '\0';  in strbuf_addch()
78 int strbuf_add(struct strbuf *sb, const void *data, size_t len)  in strbuf_add()  argument
80 	int ret = strbuf_grow(sb, len);  in strbuf_add()
84 	memcpy(sb->buf + sb->len, data, len);  in strbuf_add()
85 	return strbuf_setlen(sb, sb->len + len);  in strbuf_add()
90 	int len, ret;  in strbuf_addv()  local
100 	len = vsnprintf(sb->buf + sb->len, sb->alloc - sb->len, fmt, ap);  in strbuf_addv()
101 	if (len < 0)  in strbuf_addv()
102 		return len;  in strbuf_addv()
103 	if (len > strbuf_avail(sb)) {  in strbuf_addv()
104 		ret = strbuf_grow(sb, len);  in strbuf_addv()
107 		len = vsnprintf(sb->buf + sb->len, sb->alloc - sb->len, fmt, ap_saved);  in strbuf_addv()
109 		if (len > strbuf_avail(sb)) {  in strbuf_addv()
114 	return strbuf_setlen(sb, sb->len + len);  in strbuf_addv()
130 	size_t oldlen = sb->len;  in strbuf_read()
141 		cnt = read(fd, sb->buf + sb->len, sb->alloc - sb->len - 1);  in strbuf_read()
151 		sb->len += cnt;  in strbuf_read()
157 	sb->buf[sb->len] = '\0';  in strbuf_read()
158 	return sb->len - oldlen;  in strbuf_read()