Series 500 Implementation

NAME

core − format of core image file

DESCRIPTION

The HP-UX system writes out a core image of a terminated process when any of various errors occur.  See signal(2) for the list of reasons; the most common are memory violations, illegal instructions, floating point exceptions, and user-generated quit signals. The core image is called core and is written in the process’s working directory (provided it can be; normal access controls apply).  A process with an effective user ID different from the real user ID will not produce a core image. 

The first section of the core image is a header which contains information about the terminated process.  The remainder represents the actual contents of the user’s core area when the core image was written. This area contains the stack, user global data, and heap segments. The last object in the core image is the code segment fixup map which maps user code segments into real addresses. 

The format of the information in the first section is described by the user structure of the system, defined in <sys/user.h>. 

SEE ALSO

cdb(1), setuid(2), signal(2). 
 
 
 

Hewlett-Packard Company  —  April 12, 1993