After a system crash on SunSITE UK the system started complaining about
lack of memory (BTW SunSITE is *big*)!
After much faffing around I found that the reason for running out of
memory was a rogue exim!
I eventully tracked it down to a corrupt q file. Basically a block of
nulls had been tacked onto the end of the file, probably as a result of
the system crash while writing. A couple of loops in spool_read_header
were not spotting the nulls and were infinitely looping.
Result no more swap!
The following patch overcomes the problem. I think the loops in
question need to be investigated more closely as my patch isn't a
general solution.
Lee
--
Lee McLoughlin. Phone: +44 171 594 8388
IC-Parc, Imperial College, Fax: +44 171 594 8449
South Kensington, London. SW7 2BZ. UK. Email: L.McLoughlin@???
*** spool_in.c.ORIG Thu Apr 4 20:39:00 1996
--- spool_in.c Thu Apr 4 20:34:50 1996
***************
*** 242,247 ****
--- 242,251 ----
int nn;
char *receiver;
if (fgets(big_buffer, BIG_BUFFER_SIZE, f) == NULL) goto SPOOL_READ_ERROR;
+ /* LMJM: Look out for a block of nulls in a file - this can happen if
+ * the system crashes while writing a file. If you get this skip the
+ * file */
+ if (big_buffer[0] == '\0') goto SPOOL_FORMAT_ERROR;
nn = (int)strlen(big_buffer);
receiver = store_malloc(nn);
big_buffer[nn-1] = 0;
***************
*** 261,267 ****
if (fgets(big_buffer, BIG_BUFFER_SIZE, f) == NULL) goto SPOOL_READ_ERROR;
if (big_buffer[0] != '\n') goto SPOOL_FORMAT_ERROR;
! while ((n = fgetc(f)) != EOF)
{
header_line *h;
char flag[4];
--- 265,274 ----
if (fgets(big_buffer, BIG_BUFFER_SIZE, f) == NULL) goto SPOOL_READ_ERROR;
if (big_buffer[0] != '\n') goto SPOOL_FORMAT_ERROR;
! /* LMJM: Look out for a block of nulls in a file - this can happen if
! * the system crashes while writing a file. If you get this skip the
! * file */
! while ((n = fgetc(f)) != EOF && n != 0)
{
header_line *h;
char flag[4];
