Compatibility with GCC < 4.0 is not needed any longer

[libucw.git] / ucw / mainloop.h

diff --git a/ucw/mainloop.h b/ucw/mainloop.h
index 8fd2e6edee3be1e67bb16b73a0dd1f231d8bc2bf..98722e599459c2a4baa327d88b1820e776846f33 100644 (file)
--- a/ucw/mainloop.h
+++ b/ucw/mainloop.h
@@ -422,7 +422,7 @@ struct main_block_io {
   struct main_file file;
   byte *rbuf;                                  /* Read/write pointers for use by file_read/write */
   uint rpos, rlen;
-  byte *wbuf;
+  const byte *wbuf;
   uint wpos, wlen;
   void (*read_done)(struct main_block_io *bio);        /* [*] Called when file_read is finished; rpos < rlen if EOF */
   void (*write_done)(struct main_block_io *bio);       /* [*] Called when file_write is finished */
@@ -475,7 +475,7 @@ void block_io_read(struct main_block_io *bio, void *buf, uint len);
  * If you call it with zero @len, it will cancel the previous write, but note
  * that some data may already be written.
  **/
-void block_io_write(struct main_block_io *bio, void *buf, uint len);
+void block_io_write(struct main_block_io *bio, const void *buf, uint len);
 
 /**
  * Sets a timer for a file @bio. If the timer is not overwritten or disabled
@@ -580,7 +580,7 @@ void rec_io_stop_read(struct main_rec_io *rio);
 /** Analogous to @block_io_set_timeout(). **/
 void rec_io_set_timeout(struct main_rec_io *rio, timestamp_t expires_delta);
 
-void rec_io_write(struct main_rec_io *rio, void *data, uint len);
+void rec_io_write(struct main_rec_io *rio, const void *data, uint len);
 
 /**
  * An auxiliary function used for parsing of lines. When called in the @read_handler,