Re: base R3.14.1 "example" application booting problem, and rdbg questions

[Eric Norum <norume@aps.anl.gov>]

> "M.C.Shao" wrote:
> 
> hello,all
> Questions again.
> I have update to EPICS baseR3.14.1 now. And build the "example"
> application for RTEMS-pc386 target.
> After boot the "exmaple" application on my target machine, there are
> some errors delivered:
> --------------
> ...
> *****starting EPICS application*****
>     assert failed:
> .../../../../../../../rtems-ss-20021118/cpukit/posix/src/types.c:40 0
> EXECUTIVE SHUTDOWN!Any key to reboot...
> --------------
> Here are related contents in types.c:
> 38:    int POSIX_NOT_IMPLEMENTED()
> 39:    {
> 40:      assert( 0 );
> 41:      return 0;
> 42:    }
> 
> what does this mean? Where/when is this function called?
> When I configure RTEMS, I have had the configuration option
> "--enable-posix" turned on.

Drat.  I forgot that this problem has been fixed in the RTEMS CVS
repository but not in the 20021118 snapshot.  The problem is that the
RTEMS sysconf is being excessivly paranoid about requests for which it
has no information.

Here's the patch.  

diff -ur rtems-ss-20021118.orig/cpukit/posix/src/sysconf.c
rtems-ss-20021118/cpukit/posix/src/sysconf.c
--- rtems-ss-20021118.orig/cpukit/posix/src/sysconf.c   Thu Sep 13
16:04:21 2001
+++ rtems-ss-20021118/cpukit/posix/src/sysconf.c        Mon Jan 20
15:07:16 2003
@@ -8,6 +8,7 @@
 
 #include <time.h>
 #include <unistd.h>
+#include <errno.h>
 
 #include <rtems/system.h>
 #include <rtems/score/tod.h>
@@ -31,6 +32,9 @@
         return rtems_libio_number_iops;
       }
 
+    case _SC_GETPW_R_SIZE_MAX:
+        return 1024;
+
 #if defined(__sparc__)
     case 515: /* Solaris _SC_STACK_PROT */
      return 0;
@@ -40,5 +44,6 @@
       break;
   }
 
-  return POSIX_NOT_IMPLEMENTED();
+  errno = EINVAL;
+  return -1;
 }


-- 
Eric Norum <norume@aps.anl.gov>
Advanced Photon Source
(630) 252-4793