Fix const warnings

Now that the RPCs have const, this forces us cleaning our const-meant
functions.

7 files changed, 17 insertions, 17 deletions

diff --git a/libpipe/dgram.c b/libpipe/dgram.c
index 30695f1e..96731ff2 100644
--- a/libpipe/dgram.c
+++ b/libpipe/dgram.c
@@ -25,9 +25,9 @@
 
 /* See the definition of struct pipe_class in "pipe.h" for documentation.  */
 
-static error_t 
+static error_t
 dgram_write (struct pq *pq, void *source,
-	     char *data, size_t data_len, size_t *amount)
+	     const char *data, size_t data_len, size_t *amount)
 {
   struct packet *packet = pq_queue (pq, PACKET_TYPE_DATA, source);
   if (!packet)
diff --git a/libpipe/pipe.c b/libpipe/pipe.c
index 8713a069..53b761d2 100644
--- a/libpipe/pipe.c
+++ b/libpipe/pipe.c
@@ -328,9 +328,9 @@ pipe_pair_select (struct pipe *rpipe, struct pipe *wpipe,
    returned, nothing is done.  */
 error_t
 pipe_send (struct pipe *pipe, int noblock, void *source,
-	   char *data, size_t data_len,
-	   char *control, size_t control_len,
-	   mach_port_t *ports, size_t num_ports,
+	   const char *data, size_t data_len,
+	   const char *control, size_t control_len,
+	   const mach_port_t *ports, size_t num_ports,
 	   size_t *amount)
 {
   error_t err;
diff --git a/libpipe/pipe.h b/libpipe/pipe.h
index eda38d24..1b1ef82f 100644
--- a/libpipe/pipe.h
+++ b/libpipe/pipe.h
@@ -51,7 +51,7 @@ struct pipe_class
 		  char **data, size_t *data_len, size_t amount);
   /* Write DATA &c into the packet queue PQ.  */
   error_t (*write)(struct pq *pq, void *source,
-		   char *data, size_t data_len, size_t *amount);
+		   const char *data, size_t data_len, size_t *amount);
 };
 
 /* pipe_class flags  */
@@ -377,9 +377,9 @@ pipe_drain (struct pipe *pipe)
    of the data, to be provided to any readers of it; if no reader ever reads
    it, it's deallocated by calling pipe_dealloc_addr.  */
 error_t pipe_send (struct pipe *pipe, int noblock, void *source,
-		   char *data, size_t data_len,
-		   char *control, size_t control_len,
-		   mach_port_t *ports, size_t num_ports,
+		   const char *data, size_t data_len,
+		   const char *control, size_t control_len,
+		   const mach_port_t *ports, size_t num_ports,
 		   size_t *amount);
 
 /* Writes up to LEN bytes of DATA, to PIPE, which should be locked, and
diff --git a/libpipe/pq.c b/libpipe/pq.c
index fe7dd8ae..af380274 100644
--- a/libpipe/pq.c
+++ b/libpipe/pq.c
@@ -292,7 +292,7 @@ packet_dealloc_ports (struct packet *packet)
    if a memory allocation error occurred, otherwise, 0.  */
 error_t
 packet_set_ports (struct packet *packet,
-		  mach_port_t *ports, size_t num_ports)
+		  const mach_port_t *ports, size_t num_ports)
 {
   if (packet->num_ports > 0)
     packet_dealloc_ports (packet);
@@ -333,7 +333,7 @@ packet_read_ports (struct packet *packet,
    and return the amount appended in AMOUNT if that's not the null pointer.  */
 error_t
 packet_write (struct packet *packet,
-	      char *data, size_t data_len, size_t *amount)
+	      const char *data, size_t data_len, size_t *amount)
 {
   error_t err = packet_ensure (packet, data_len);
 
diff --git a/libpipe/pq.h b/libpipe/pq.h
index 7238ace0..c2f64613 100644
--- a/libpipe/pq.h
+++ b/libpipe/pq.h
@@ -68,7 +68,7 @@ struct packet
 /* Sets PACKET's ports to be PORTS, of length NUM_PORTS.  ENOMEM is returned
    if a memory allocation error occurred, otherwise, 0.  */
 error_t packet_set_ports (struct packet *packet,
-			  mach_port_t *ports, size_t num_ports);
+			  const mach_port_t *ports, size_t num_ports);
 
 /* If PACKET has any ports, deallocates them.  */
 void packet_dealloc_ports (struct packet *packet);
@@ -89,7 +89,7 @@ packet_readable (struct packet *packet)
 /* Append the bytes in DATA, of length DATA_LEN, to what's already in PACKET,
    and return the amount appended in AMOUNT if that's not the null pointer.  */
 error_t packet_write (struct packet *packet,
-		      char *data, size_t data_len, size_t *amount);
+		      const char *data, size_t data_len, size_t *amount);
 
 /* Removes up to AMOUNT bytes from the beginning of the data in PACKET, and
    puts it into *DATA, and the amount read into DATA_LEN.  If more than the
diff --git a/libpipe/seqpack.c b/libpipe/seqpack.c
index 041abb74..e34a5379 100644
--- a/libpipe/seqpack.c
+++ b/libpipe/seqpack.c
@@ -28,9 +28,9 @@
 /* This type of pipe is the same as a SOCK_STREAM, but maintains record
    boundaries.  */
 
-static error_t 
+static error_t
 seqpack_write (struct pq *pq, void *source,
-	       char *data, size_t data_len, size_t *amount)
+	       const char *data, size_t data_len, size_t *amount)
 {
   struct packet *packet = pq_queue (pq, PACKET_TYPE_DATA, source);
   if (!packet)
diff --git a/libpipe/stream.c b/libpipe/stream.c
index 671907e7..758ebb64 100644
--- a/libpipe/stream.c
+++ b/libpipe/stream.c
@@ -31,9 +31,9 @@ static inline int page_aligned (vm_offset_t num)
   return trunc_page (num) == num;
 }
 
-static error_t 
+static error_t
 stream_write (struct pq *pq, void *source,
-	      char *data, size_t data_len, size_t *amount)
+	      const char *data, size_t data_len, size_t *amount)
 {
   struct packet *packet = pq_tail (pq, PACKET_TYPE_DATA, source);