Time Issue on OpenBSD 4.2 with rc.69 (Was: Re: Sparc64 OpenBSD4.1 Compile issue)

[Eric Pancer]

On Sun, 2008-02-10 at 16:33:50 -0500, Carter Bullard proclaimed...

> So in back tracking, this shouldn't be a little endian machine, but  the
> only code that works on this buffer before the routine you looked at,  is
> ArgusNtoH().  To see if its messing things up in ra():
> 
> So, in gdb()
> (gdb) l ArgusNtoH
> (gdb) break 13669
> (gdb) run
> 
> to see if we ever break here.
> If so, do this:
> 
> (gdb) x/5x dsr
> 
> then slowly step until you reach the 'break', and print again
> (gdb) x/5x dsr

Hiya -

Here we go.........

$ gdb ra
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This GDB was configured as "i386-unknown-openbsd4.2"...
(gdb) l ArgusNtoH
13465   #endif
13466
13467
13468   void
13469   ArgusNtoH (struct ArgusRecord *argus)
13470   {
13471   #if defined(_LITTLE_ENDIAN)
13472      struct ArgusRecordHeader *hdr = &argus->hdr;
13473      struct ArgusDSRHeader *dsr = (struct ArgusDSRHeader *) (hdr + 1);
13474
(gdb) break 13669
Breakpoint 1 at 0x1c0348e4: file argus_util.c, line 13669.
(gdb) run
Starting program: /usr/local/argus/bin/ra
[Switching to process 18619, thread 0x8bcde000]

Breakpoint 1, ArgusNtoH (argus=0x84f2e01c) at argus_util.c:13669
13669                  for (i = 1; i < dsr->argus_dsrvl8.len; i++)
(gdb) x/5x dsr
0x84f2e040:     0x03180903      0x0e480a00      0x4e000000      0x02060110
0x84f2e050:     0x4e000100
(gdb) n
13670                     dtime[i] = ntohl(dtime[i]);
(gdb) n
13669                  for (i = 1; i < dsr->argus_dsrvl8.len; i++)
(gdb) n
13670                     dtime[i] = ntohl(dtime[i]);
(gdb) n
13669                  for (i = 1; i < dsr->argus_dsrvl8.len; i++)
(gdb) n
13965            if (dsr->subtype & ARGUS_LEN_16BITS)
(gdb) n
13968            if ((cnt = (((dsr->type & ARGUS_IMMEDIATE_DATA) ? 1 :
(gdb) n
13971               dsr = (struct ArgusDSRHeader *)((char *)dsr + cnt);
(gdb) n
13513         while ((char *) dsr < ((char *) argus + (hdr->len * 4))) {
(gdb) n
13514            switch (dsr->type & 0x7F) {
(gdb) n
13675                  if (dsr->subtype & ARGUS_METER_PKTS_BYTES) {
(gdb) n
13676                     switch (dsr->argus_dsrvl8.qual & 0x0F) {
(gdb) n
13701                           ((unsigned short *)(dsr + 1))[0] = ntohs(((unsigned short *)(dsr + 1))[0]);
(gdb) n
13702                           ((unsigned short *)(dsr + 1))[1] = ntohs(((unsigned short *)(dsr + 1))[1]);
(gdb) n
13703                           break;
(gdb) x/5x dsr
0x84f2e04c:     0x02060110      0x004e0001      0x05000330      0x02000000
0x84f2e05c:     0x7b4f9929

Thanks,

- Eric