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/*

 *  report errors and panics to RTEMS' stderr.

 *  Currently just used by RTEMS monitor.

 *

 *  $Id: error.c,v 1.2 2001-09-27 12:01:15 chris Exp $

 */

/*

 * These routines provide general purpose error reporting.

 * rtems_error reports an error to stderr and allows use of

 * printf style formatting.  A newline is appended to all messages.

 *

 * error_flag can be specified as any of the following:

 *

 *      RTEMS_ERROR_ERRNO       -- include errno text in output

 *      RTEMS_ERROR_PANIC       -- halts local system after output

 *      RTEMS_ERROR_ABORT       -- abort after output

 *

 * It can also include a rtems_status value which can be OR'd

 * with the above flags. *

 *

 * EXAMPLE

 *      #include <rtems.h>

 *      #include <rtems/error.h>

 *      rtems_error(0, "stray interrupt %d", intr);

 *

 * EXAMPLE

 *        if ((status = rtems_task_create(...)) != RTEMS_SUCCCESSFUL)

 *        {

 *            rtems_error(status | RTEMS_ERROR_ABORT,

 *                        "could not create task");

 *        }

 *

 * EXAMPLE

 *        if ((fd = open(pathname, O_RDNLY)) < 0)

 *        {

 *            rtems_error(RTEMS_ERROR_ERRNO, "open of '%s' failed", pathname);

 *            goto failed;

 *        }

 */

#define __RTEMS_VIOLATE_KERNEL_VISIBILITY__

#include <rtems.h>

#include "error.h"

#include <rtems/assoc.h>

#include <stdio.h>

#include <stdarg.h>

#include <errno.h>

#include <stdlib.h>

#include <string.h>

#include <unistd.h>             /* _exit() */

/* bug in hpux <errno.h>: no prototypes unless you are C++ */

#ifdef hpux9

char *strerror(int);

#endif

extern char *rtems_progname;

int          rtems_panic_in_progress;

rtems_assoc_t rtems_status_assoc[] = {

    { "successful completion",              RTEMS_SUCCESSFUL, },

    { "returned from a thread",             RTEMS_TASK_EXITTED, },

    { "multiprocessing not configured",     RTEMS_MP_NOT_CONFIGURED, },

    { "invalid object name",                RTEMS_INVALID_NAME, },

    { "invalid object id",                  RTEMS_INVALID_ID, },

    { "too many",                           RTEMS_TOO_MANY, },

    { "timed out waiting",                  RTEMS_TIMEOUT, },

    { "object deleted while waiting",       RTEMS_OBJECT_WAS_DELETED, },

    { "specified size was invalid",         RTEMS_INVALID_SIZE, },

    { "address specified is invalid",       RTEMS_INVALID_ADDRESS, },

    { "number was invalid",                 RTEMS_INVALID_NUMBER, },

    { "item has not been initialized",      RTEMS_NOT_DEFINED, },

    { "resources still outstanding",        RTEMS_RESOURCE_IN_USE, },

    { "request not satisfied",              RTEMS_UNSATISFIED, },

    { "thread is in wrong state",           RTEMS_INCORRECT_STATE, },

    { "thread already in state",            RTEMS_ALREADY_SUSPENDED, },

    { "illegal on calling thread",          RTEMS_ILLEGAL_ON_SELF, },

    { "illegal for remote object",          RTEMS_ILLEGAL_ON_REMOTE_OBJECT, },

    { "called from wrong environment",      RTEMS_CALLED_FROM_ISR, },

    { "invalid thread priority",            RTEMS_INVALID_PRIORITY, },

    { "invalid date/time",                  RTEMS_INVALID_CLOCK, },

    { "invalid node id",                    RTEMS_INVALID_NODE, },

    { "directive not configured",           RTEMS_NOT_CONFIGURED, },

    { "not owner of resource",              RTEMS_NOT_OWNER_OF_RESOURCE , },

    { "directive not implemented",          RTEMS_NOT_IMPLEMENTED, },

    { "RTEMS inconsistency detected",       RTEMS_INTERNAL_ERROR, },

    { "could not get enough memory",        RTEMS_NO_MEMORY, },

    { "driver IO error",                    RTEMS_IO_ERROR, },

    { "internal multiprocessing only",      THREAD_STATUS_PROXY_BLOCKING, },

    { 0, 0, 0 },

};

const char *

rtems_status_text(

    rtems_status_code status

)

{

    return rtems_assoc_name_by_local(rtems_status_assoc, status);

}

static int rtems_verror(

    unsigned32   error_flag,

    const char   *printf_format,

    va_list      arglist

)

{

    int               local_errno = 0;

    int               chars_written = 0;

    rtems_status_code status;

    if (error_flag & RTEMS_ERROR_PANIC)

    {

        if (rtems_panic_in_progress++)

            _Thread_Disable_dispatch();       /* disable task switches */

        /* don't aggravate things */

        if (rtems_panic_in_progress > 2)

            return 0;

    }

    (void) fflush(stdout);          /* in case stdout/stderr same */

    status = error_flag & ~RTEMS_ERROR_MASK;

    if (error_flag & RTEMS_ERROR_ERRNO)     /* include errno? */

        local_errno = errno;

    if (_System_state_Is_multiprocessing)

        fprintf(stderr, "[%d] ", _Configuration_MP_table->node);

    if (rtems_progname && *rtems_progname)

        chars_written += fprintf(stderr, "%s: ", rtems_progname);

    chars_written += vfprintf(stderr, printf_format, arglist);

    if (status)

        chars_written += fprintf(stderr, " (status: %s)", rtems_status_text(status));

    if (local_errno)

    {

      if ((local_errno > 0) && *strerror(local_errno))

        chars_written += fprintf(stderr, " (errno: %s)", strerror(local_errno));

      else

        chars_written += fprintf(stderr, " (unknown errno=%d)", local_errno);

    }

    chars_written += fprintf(stderr, "\n");

    (void) fflush(stderr);

    if (error_flag & (RTEMS_ERROR_PANIC | RTEMS_ERROR_ABORT))

    {

        if (error_flag & RTEMS_ERROR_PANIC)

        {

            rtems_error(0, "fatal error, exiting");

            _exit(local_errno);

        }

        else

        {

            rtems_error(0, "fatal error, aborting");

            abort();

        }

    }

    return chars_written;

}

/*

 * Report an error.

 * error_flag is as above; printf_format is a normal

 * printf(3) format string, with its concommitant arguments.

 *

 * Returns the number of characters written.

 */

int rtems_error(

    int   error_flag,

    const char *printf_format,

    ...

  )

{

    va_list arglist;

    int chars_written;

    va_start(arglist, printf_format);

    chars_written = rtems_verror(error_flag, printf_format, arglist);

    va_end(arglist);

    return chars_written;

}

/*

 * rtems_panic is shorthand for rtems_error(RTEMS_ERROR_PANIC, ...)

 */

void rtems_panic(

    const char *printf_format,

    ...

  )

{

    va_list arglist;

    va_start(arglist, printf_format);

    (void) rtems_verror(RTEMS_ERROR_PANIC, printf_format, arglist);

    va_end(arglist);

}