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/*
* diskdump.c
*
* NOTE: The Red Hat diskdump module currently creates
* vmcore dumpfiles that are identical to those made
* by the Red Hat netdump module, and therefore the
* dumpfile is recognized as such. But just in case
* there's ever a divergence, this file is being kept
* in place, along with the DISKDUMP-related #define's
* and their usage throughout the crash sources.
*
* Copyright (C) 2004 David Anderson
* Copyright (C) 2004 Red Hat, Inc. All rights reserved.
*
* This software may be freely redistributed under the terms of the
* GNU General Public License.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* Author: David Anderson
*
* CVS: $Revision: 1.6 $ $Date: 2004/05/12 20:26:19 $
*/
#include "defs.h"
#include "diskdump.h"
struct diskdump_data {
ulong flags; /* DISKDUMP_LOCAL, plus anything else... */
int dfd; /* dumpfile file descriptor */
FILE *ofp; /* fprintf(dd->ofp, "xxx"); */
int machine_type; /* machine type identifier */
};
static struct diskdump_data diskdump_data = { 0 };
static struct diskdump_data *dd = &diskdump_data;
/*
* Determine whether a file is a diskdump creation, and if TRUE,
* initialize the diskdump_data structure based upon the contents
* of the diskdump header data.
*/
int
is_diskdump(char *file)
{
return FALSE;
}
/*
* Perform any post-dumpfile determination stuff here.
* At a minimum
*/
int
diskdump_init(char *unused, FILE *fptr)
{
if (!DISKDUMP_VALID())
return FALSE;
dd->ofp = fptr;
return TRUE;
}
/*
* Read from a diskdump-created dumpfile.
*/
int
read_diskdump(int fd, void *bufptr, int cnt, ulong addr, physaddr_t paddr)
{
return 0;
}
/*
* Write to a diskdump-created dumpfile.
*/
int
write_diskdump(int fd, void *bufptr, int cnt, ulong addr, physaddr_t paddr)
{
return 0;
}
ulong
get_diskdump_panic_task(void)
{
return NO_TASK;
}
/*
* Send the request to the proper architecture hander.
*/
void
get_diskdump_regs(struct bt_info *bt, ulong *eip, ulong *esp)
{
switch (dd->machine_type)
{
default:
error(FATAL,
"diskdump support for this machine type is not available\n");
}
}
/*
* Return the processor page size.
*/
uint
diskdump_page_size(void)
{
return 0;
}
/*
* diskdump_free_memory(), and diskdump_memory_used()
* are debug only, and probably unnecessary to implement.
*/
int
diskdump_free_memory(void)
{
return 0;
}
int diskdump_memory_used(void)
{
return 0;
}
/*
* This function is dump-type independent, and could be used
* to dump the diskdump_data structure contents and perhaps
* the diskdump header data.
*/
int
diskdump_memory_dump(FILE *fp)
{
return 0;
}
/*
* Get the switch_stack address of the passed-in task.
*/
ulong
get_diskdump_switch_stack(ulong task)
{
return 0;
}
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