usr/share/man/cat5/core.0

CORE(5)                     BSD Programmer's Manual                    CORE(5)

N\bNA\bAM\bME\bE
     c\bco\bor\bre\be - memory image file format

S\bSY\bYN\bNO\bOP\bPS\bSI\bIS\bS
     #\b#i\bin\bnc\bcl\blu\bud\bde\be <\b<s\bsy\bys\bs/\b/p\bpa\bar\bra\bam\bm.\b.h\bh>\b>

D\bDE\bES\bSC\bCR\bRI\bIP\bPT\bTI\bIO\bON\bN
     A small number of signals which cause abnormal termination of a process
     also cause a record of the process's in-core state to be written to disk
     for later examination by one of the aviailable debuggers.  (See
     sigaction(2).)  This memory image is written to a file named c\bco\bor\bre\be in the
     working directory; provided the terminated process had write permission
     in the directory, and provided the abnormality did not caused a system
     crash.  (In this event, the decision to save the core file is arbitrary,
     see savecore(8).)

     The maximum size of a c\bco\bor\bre\be file is limited by setrlimit(2).  Files which
     would be larger than the limit are not created.

     The c\bco\bor\bre\be file consists of the _\bu. area, whose size (in pages) is defined
     by the UPAGES manifest in the <_\bs_\by_\bs_\b/_\bp_\ba_\br_\ba_\bm_\b._\bh> file.  The _\bu. area starts
     with a _\bu_\bs_\be_\br structure as given in <_\bs_\by_\bs_\b/_\bu_\bs_\be_\br_\b._\bh>. The remainder of the c\bco\bor\bre\be
     file consists of the data pages followed by the stack pages of the pro-
     cess image.  The amount of data space image in the c\bco\bor\bre\be file is given (in
     pages) by the variable _\bu_\b__\bd_\bs_\bi_\bz_\be in the _\bu. area.  The amount of stack image
     in the core file is given (in pages) by the variable _\bu_\b__\bs_\bs_\bi_\bz_\be in the _\bu.
     area.  The size of a ``page'' is given by the constant NBPG (also from
     <_\bs_\by_\bs_\b/_\bp_\ba_\br_\ba_\bm_\b._\bh>).

S\bSE\bEE\bE A\bAL\bLS\bSO\bO
     adb(1),  dbx(1),  gdb(1),  kgdb(1),  sigaction(2),  setrlimit(2)

H\bHI\bIS\bST\bTO\bOR\bRY\bY
     A c\bco\bor\bre\be file format appeared in Version 6 AT&T UNIX.

4th Berkeley Distribution        June 5, 1993                                1