Changes between Version 49 and Version 50 of io_operations

Timestamp:

Jan 19, 2018, 1:30:39 PM (7 years ago)

Author:

alain

Comment:

--

io_operations

@@ -142 +142 @@
 '''1)''' The TXT[0] terminal is reserved for the kernel. It is normally used by the kernel to display log and/or debug messages. It can only be used by the user processes for debug, through some specific system calls such as the panic() or display_xxx() functions, that should not be used in normal exploitation.
 
-'''2)''' The other (NB_TXT_CHANNELS - 1) terminals TXT[i] are shared resources used by user processes. During kernel initialization,  ALMOS-MKH creates the first INIT user process, that creates itself (NB_TXT_CHANNELS -1) KSH user processes (one shell per user text terminal). All processes created by a KSH[i] process share the same TXT[i] terminal as the parent process, and belong to the same group of process.  
- 
+'''2)''' The other (NB_TXT_CHANNELS - 1) terminals TXT[i] are shared resources used by user processes. During kernel initialization,  ALMOS-MKH creates the first INIT user process, that creates itself (NB_TXT_CHANNELS -1) KSH user processes (one shell per user text terminal). All processes created by a KSH[i] process share the same TXT[i] terminal as the parent process, and belong to the same group of process. 
+
 '''3)''' In the present implementation, the INIT process and the the KSH[i] processes are never deleted : they do not call the exit() scale, and cannot be killed.
 
@@ -152 +152 @@
 '''6)''' The control characters (ctrlC , ctrlZ) typed in a TXT_RX[i] terminal are only routed to the foreground process attached to this terminal.
 
-'''7)''' When a new process is launched in a KSH (using the ''load''command), it becomes the TXT terminal owner, and run in foreground, unless it is launched with the ''&'' attribute on command line. When a child process is directly created by a parent process (using the ''fork()'' syscall), it does not get the the TXT terminal ownership, and run in background. 
+'''7)''' When a new process is launched in a KSH (using the ''load'' command), it becomes the TXT terminal owner, and run in foreground, unless it is launched with the ''&'' attribute on command line. When a child process is directly created by a parent process (using the ''fork()'' syscall), it does not get the the TXT terminal ownership, and run in background. 
  
 == I) Hardware Specific  ==