hurd: Fix vm_size_t incoherencies

In gnumach, 3e1702a65fb3 ("add rpc_versions for vm types") changed the type
of vm_size_t, making it always a unsigned long. This made it incompatible on
x86 with size_t. Even if we may want to revert it to unsigned int, it's
better to fix the types of parameters according to the .defs files.

hurd/fd-write.c

@@ -26,7 +26,7 @@ _hurd_fd_write (struct hurd_fd *fd,
 		const void *buf, size_t *nbytes, loff_t offset)
 {
   error_t err;
-  mach_msg_type_number_t wrote;
+  vm_size_t wrote;
 
   error_t writefd (io_t port)
     {

hurd/fopenport.c

@@ -48,7 +48,7 @@ readio (void *cookie, char *buf, size_t n)
 static ssize_t
 writeio (void *cookie, const char *buf, size_t n)
 {
-  mach_msg_type_number_t wrote;
+  vm_size_t wrote;
   error_t err;
 
   if (err = __io_write ((io_t) cookie, buf, n, -1, &wrote))

hurd/get-host.c

@@ -27,7 +27,8 @@ _hurd_get_host_config (const char *item, char *buf, size_t buflen)
 {
   error_t err;
   char *data;
-  mach_msg_type_number_t nread, more;
+  mach_msg_type_number_t nread;
+  vm_size_t more;
   file_t config;
 
   err = __hurd_file_name_lookup (&_hurd_ports_use, &__getdport, 0,

hurd/hurdioctl.c

@@ -70,7 +70,7 @@ fioctl (int fd,
 
     case FIONREAD:
       {
-	mach_msg_type_number_t navail;
+	vm_size_t navail;
 	err = HURD_DPORT_USE (fd, __io_readable (port, &navail));
 	if (!err)
 	  *arg = (int) navail;

hurd/set-host.c

@@ -24,7 +24,7 @@ ssize_t
 _hurd_set_host_config (const char *item, const char *value, size_t valuelen)
 {
   error_t err;
-  mach_msg_type_number_t nwrote;
+  vm_size_t nwrote;
   file_t new, dir;
   char *name;
 

hurd/vpprintf.c

@@ -25,8 +25,8 @@
 static ssize_t
 do_write (void *cookie,	const char *buf, size_t n)
 {
-  error_t error = __io_write ((io_t) cookie, buf, n, -1,
-			      (mach_msg_type_number_t *) &n);
+  vm_size_t amount = n;
+  error_t error = __io_write ((io_t) cookie, buf, n, -1, &amount);
   if (error)
     return __hurd_fail (error);
   return n;

sysdeps/mach/hurd/dl-sysdep.c

@@ -382,7 +382,7 @@ __ssize_t weak_function
 __write (int fd, const void *buf, size_t nbytes)
 {
   error_t err;
-  mach_msg_type_number_t nwrote;
+  vm_size_t nwrote;
 
   assert (fd < _hurd_init_dtablesize);
 
@@ -415,7 +415,7 @@ __writev (int fd, const struct iovec *iov, int niov)
     {
       char buf[total], *bufp = buf;
       error_t err;
-      mach_msg_type_number_t nwrote;
+      vm_size_t nwrote;
 
       for (i = 0; i < niov; ++i)
 	bufp = (memcpy (bufp, iov[i].iov_base, iov[i].iov_len)

sysdeps/mach/hurd/ptrace.c

@@ -47,8 +47,11 @@ ptrace (enum __ptrace_request request, ... )
     {
       /* Read the pages containing the addressed range.  */
       error_t err;
+      mach_msg_type_number_t nread;
       *size = round_page (addr + data) - trunc_page (addr);
-      err = __vm_read (task, trunc_page (addr), *size, ourpage, size);
+      err = __vm_read (task, trunc_page (addr), *size, ourpage, &nread);
+      if (!err)
+	*size = nread;
       return err;
     }
 

sysdeps/mach/hurd/send.c

@@ -27,7 +27,7 @@ ssize_t
 __send (int fd, const void *buf, size_t n, int flags)
 {
   error_t err;
-  size_t wrote;
+  vm_size_t wrote;
   int cancel_oldtype;
 
   cancel_oldtype = LIBC_CANCEL_ASYNC();

sysdeps/mach/hurd/sendfile64.c

@@ -42,7 +42,7 @@ __sendfile64 (int out_fd, int in_fd, off64_t *offset, size_t count)
 					   count));
   if (err == 0)
     {
-      size_t nwrote;
+      vm_size_t nwrote;
       if (datalen == 0)
 	return 0;
       err = HURD_DPORT_USE (out_fd, __io_write (port, data, datalen,

sysdeps/mach/hurd/sendmsg.c

@@ -47,7 +47,7 @@ __libc_sendmsg (int fd, const struct msghdr *message, int flags)
   } data = { .ptr = NULL };
   char data_buf[2048];
   mach_msg_type_number_t len;
-  mach_msg_type_number_t amount;
+  vm_size_t amount;
   int dealloc = 0;
   int socketrpc = 0;
   int i;

sysdeps/mach/hurd/sendto.c

@@ -37,7 +37,7 @@ __sendto (int fd,
 {
   addr_port_t aport = MACH_PORT_NULL;
   error_t err;
-  size_t wrote;
+  vm_size_t wrote;
 
   /* Get an address port for the desired destination address.  */
   error_t create_address_port (io_t port,