Changeset 670 for trunk/kernel/syscalls/sys_chdir.c

Timestamp:

Nov 19, 2020, 11:45:52 PM (4 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/syscalls/sys_chdir.c (modified) (5 diffs)

trunk/kernel/syscalls/sys_chdir.c

@@ -46 +46 @@
     process_t * process = this->process;
 
-#if (DEBUG_SYS_CHDIR || CONFIG_INSTRUMENTATION_SYSCALLS)
+#if DEBUG_SYS_CHDIR || DEBUG_SYSCALLS_ERROR || CONFIG_INSTRUMENTATION_SYSCALLS
 uint64_t     tm_start = hal_get_cycles();
 #endif
@@ -55 +55 @@
 
 #if DEBUG_SYSCALLS_ERROR
+if( DEBUG_SYSCALLS_ERROR < (uint32_t)tm_start )
 printk("\n[ERROR] in %s : pathname too long / thread[%x,%x]\n",
 __FUNCTION__, process->pid, this->trdid );
@@ -67 +68 @@
 
 #if DEBUG_SYSCALLS_ERROR
+if( DEBUG_SYSCALLS_ERROR < (uint32_t)tm_start )
 printk("\n[ERROR] in %s : user buffer unmapped %x for thread[%x,%x]\n",
 __FUNCTION__ , (intptr_t)pathname , process->pid, this->trdid );
@@ -80 +82 @@
 
 #if DEBUG_SYS_CHDIR
-if( DEBUG_SYS_CHDIR < tm_start )
+if( DEBUG_SYS_CHDIR < (uint32_t)tm_start )
 printk("\n[%s] thread[%x,%x] enter for <%s> / cycle %d\n",
 __FUNCTION__, process->pid, this->trdid, kbuf, (uint32_t)tm_start );
@@ -109 +111 @@
 
 #if DEBUG_SYSCALLS_ERROR
+if( DEBUG_SYSCALLS_ERROR < (uint32_t)tm_start )
 printk("\n[ERROR] in %s / thread[%x,%x] : cannot change CWD\n",
 __FUNCTION__ , process->pid , this->trdid );