memcpy(r, p, l);
return r;
}
+
+int fd_inc_sndbuf(int fd, size_t n) {
+ int r, value;
+ socklen_t l = sizeof(value);
+
+ r = getsockopt(fd, SOL_SOCKET, SO_SNDBUF, &value, &l);
+ if (r >= 0 &&
+ l == sizeof(value) &&
+ (size_t) value >= n*2)
+ return 0;
+
+ value = (int) n;
+ r = setsockopt(fd, SOL_SOCKET, SO_SNDBUF, &value, sizeof(value));
+ if (r < 0)
+ return -errno;
+
+ return 1;
+}
+
+int fd_inc_rcvbuf(int fd, size_t n) {
+ int r, value;
+ socklen_t l = sizeof(value);
+
+ r = getsockopt(fd, SOL_SOCKET, SO_RCVBUF, &value, &l);
+ if (r >= 0 &&
+ l == sizeof(value) &&
+ (size_t) value >= n*2)
+ return 0;
+
+ value = (int) n;
+ r = setsockopt(fd, SOL_SOCKET, SO_RCVBUF, &value, sizeof(value));
+ if (r < 0)
+ return -errno;
+
+ return 1;
+}