From ccc4092e238c5e074a32e2c5794ab01934f272df Mon Sep 17 00:00:00 2001
From: Marcus Brinkmann <marcus@gnu.org>
Date: Thu, 13 Jun 2002 00:24:26 +0000
Subject: 2002-06-13  Marcus Brinkmann  <marcus@gnu.org>

	* Makefile (DIST_FILES): New target.
	(MIGSTUBS): Likewise.
	(OBJS): Add $(MIGSTUBS).
	* ourfs_notify.defs: New file.
	* console.c: Diddle order of typedefs.
	(netfs_attempt_read): Clip AMT to bytes left to read before
	calling display_read.
	(netfs_S_file_notice_changes): New function.
	* console.h: Include <stdint.h>, not <sys/types.h>.
	Change all types from u_int32_t to uint32_t.
	* display.c: Include <stddef.h> and "outfs_notify_U.h".  Change
	all u_int_32 types to uint32_t.
	(struct modreq): New structure.
	(struct display): New member filemod_reqs.
	(free_modreqs): New function.
	(display_notice_changes): Likewise.
	(display_notice_filechange): Likewise.
	(display_destroy): Free filemod_reqs member of DISPLAY.
	(MATRIX_POS): Macro removed.
	(screen_fill): Rewritten.
	(screen_shift_left): New function.
	(screen_shift_right): Likewise.
	(screen_scroll_up): Function removed.
	(screen_scroll_down): Likewise.
	(screen_scroll_left): Likewise.
	(screen_scroll_right): Likewise.
	(handle_esc_bracket): Use new screen_* functions.
	(display_output_one): Store old cursor and screen attributes, and
	if they have been changed, send file change notifications.
	* display.h: New prototype for display_notice_changes.
---
 console/console.c | 41 ++++++++++++++++++++++++++++++++---------
 1 file changed, 32 insertions(+), 9 deletions(-)

(limited to 'console/console.c')

diff --git a/console/console.c b/console/console.c
index 3c1c5ce2..7d12db9f 100644
--- a/console/console.c
+++ b/console/console.c
@@ -52,6 +52,12 @@ volatile struct mapped_time_value *console_maptime;
 #define DEFAULT_ENCODING "ISO-8859-1"
 
 
+/* A handle for a console device.  */
+typedef struct cons *cons_t;
+
+/* A handle for a virtual console device.  */
+typedef struct vcons *vcons_t;
+
 struct vcons
 {
   /* Protected by cons->lock.  */
@@ -75,8 +81,6 @@ struct vcons
   struct node *disp_node;
   struct node *inpt_node;
 };
-/* A handle for a virtual console device.  */
-typedef struct vcons *vcons_t;
 
 struct cons
 {
@@ -93,8 +97,6 @@ struct cons
   /* A template for the stat information of all nodes.  */
   struct stat stat_template;
 };
-/* A handle for a console device.  */
-typedef struct cons *cons_t;
 
 
 /* Lookup the virtual console with number ID in the console CONS,
@@ -1051,11 +1053,14 @@ netfs_attempt_read (struct iouser *cred, struct node *np,
       ssize_t amt = *len;
       assert (np == vcons->disp_node);
 
-      if (amt > np->nn_stat.st_size)
-	amt = np->nn_stat.st_size;
-      amt = display_read (vcons->display,
-			  /* cred->po->openstat & O_NONBLOCK */ 0,
-			  offset, data, amt);
+      if (offset + amt > np->nn_stat.st_size)
+	amt = np->nn_stat.st_size - offset;
+      if (amt < 0)
+	amt = 0;
+      else
+	amt = display_read (vcons->display,
+			    /* cred->po->openstat & O_NONBLOCK */ 0,
+			    offset, data, amt);
       if (amt == -1)
 	err = errno;
       else
@@ -1165,6 +1170,24 @@ netfs_S_io_map (struct protid *cred,
   return errno;
 }
 
+
+kern_return_t
+netfs_S_file_notice_changes (struct protid *cred, mach_port_t notify)
+{
+  struct node *np;
+  vcons_t vcons;
+
+  if (!cred)
+    return EOPNOTSUPP;
+
+  np = cred->po->np;
+  vcons = np->nn->vcons;
+  if (!vcons || np != vcons->disp_node)
+    return EOPNOTSUPP;
+
+  return display_notice_changes (vcons->display, notify);
+}
+
 
 static const struct argp_option options[] =
 {
-- 
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