Changeset 669 for trunk/kernel/kern/chdev.h

Timestamp:

Nov 19, 2020, 11:44:34 PM (3 years ago)

Author:

alain

Message:

1) Introduce up to 4 command lines arguments in the KSH "load" command.
These arguments are transfered to the user process through the
argc/argv mechanism, using the user space "args" vseg.

2) Introduce the named and anonymous "pipes", for inter-process communication
through the pipe() and mkfifo() syscalls.

3) Introduce the "chat" application to validate the two above mechanisms.

4) Improve printk() and assert() fonctions in printk.c.

File:

• trunk/kernel/kern/chdev.h (modified) (2 diffs)

trunk/kernel/kern/chdev.h

@@ -66 +66 @@
 
 /****************************************************************************************
- * This define the generic prototypes for the three functions that must be defined
- * by the drivers implementing a generic device:
+ * This defines the generic prototypes for the functions that must be defined
+ * by all drivers implementing a generic device:
  * - "cmd"     : start a blocking I/O operation.
  * - "isr"     : complete an I/O operation.
@@ -272 +272 @@
 /****************************************************************************************
  * This function returns an extended pointer on the chdev associated to a pseudo file
- * descriptor (type INODE_TYPE_DEV) identified by the <file_xp> argument.
+ * descriptor (type FILE_TYPE_DEV) identified by the <file_xp> argument.
  * It can be called by a thread running in any cluster.
  * It enters kernel panic if the inode has not the expected type.