Values for alert revive/select callbacks

diff --git a/include/minix/com.h b/include/minix/com.h
index 030f2dee36409d361c9e03026a6b5381ee22a3de..53145f63a6bcf3e04fdd59e713b2b39dde888219 100755 (executable)
--- a/include/minix/com.h
+++ b/include/minix/com.h
@@ -1,3 +1,7 @@
+
+#ifndef _MINIX_COM_H
+#define _MINIX_COM_H 1
+
 /*===========================================================================*
  *                             Magic process numbers                        *
  *===========================================================================*/
@@ -109,13 +113,14 @@
 #define DEV_GATHER      9      /* fcn code for reading into a vector */
 #define TTY_SETPGRP    10      /* fcn code for setpgroup */
 #define TTY_EXIT       11      /* a process group leader has exited */ 
-#define DEV_SELECT     12      /* request select() attention */
-#define DEV_STATUS     (DEV_RQ_BASE + 13)      /* request driver status */
+#define DEV_SELECT     (DEV_RQ_BASE + 12) /* request select() attention */
+#define DEV_STATUS     (DEV_RQ_BASE + 13) /* request driver status */
 
-#define DEV_REPLY       (DEV_RS_BASE + 0)      /* general task reply */
-#define DEV_CLONED      (DEV_RS_BASE + 1)      /* return cloned minor */
-#define DEV_REVIVE      (DEV_RS_BASE + 2)      /* driver revives process */
-#define DEV_IO_READY    (DEV_RS_BASE + 3)      /* selected device ready */
+#define DEV_REPLY       (DEV_RS_BASE + 0) /* general task reply */
+#define DEV_CLONED      (DEV_RS_BASE + 1) /* return cloned minor */
+#define DEV_REVIVE      (DEV_RS_BASE + 2) /* driver revives process */
+#define DEV_IO_READY    (DEV_RS_BASE + 3) /* selected device ready */
+#define DEV_NO_STATUS   (DEV_RS_BASE + 4) /* empty status reply */
 
 #define SUSPEND                -998    /* used in interrupts when tty has no data */
 
@@ -128,7 +133,7 @@
 #define ADDRESS        m2_p1   /* core buffer address */
 
 /* Field names for DEV_SELECT messages to device drivers. */
-#define DEVICE         m2_i1   /* minor device */
+#define DEV_MINOR      m2_i1   /* minor device */
 #define DEV_SEL_OPS    m2_i2   /* which select operations are requested */
 #define DEV_SEL_WATCH  m2_i3   /* request notify if no operations are ready */
 
@@ -433,3 +438,4 @@
 #  define DIAG_PROC_NR         m1_i2
 
 
+#endif