NAME
magic — magic numbers for HP-UX implementations
DESCRIPTION
The
magic.h
file localizes all information about
HP-UX
``magic numbers'' in one file,
thus facilitating uniform treatment of magic numbers.
This file specifies the location of the magic number in a file
(always the start of the file) and the structure of the magic number:
struct magic_number {
unsigned short system_id;
unsigned short file_type;
};
typedef struct magic_number MAGIC;
magic.h
includes definitions for the system
IDs of all
HP
machines running
HP-UX,
and file types that are common to all implementations.
There may be additional implementation-dependent file types.
The predefined file types are:
/* for object code files */
#define RELOC_MAGIC 0x106 /* relocatable only */
#define EXEC_MAGIC 0x107 /* normal executable */
#define SHARE_MAGIC 0x108 /* shared executable */
#define DEMAND_MAGIC 0x10B /* demand-load executable */
#define LISP_MAGIC 0x10C /* compiled Lisp */
#define DL_MAGIC 0x10D /* dynamic load library */
#define SHL_MAGIC 0x10E /* shared library */
#define HPE_MAGIC 0x150 /* HPE boot image */
The values for
system_id
are defined in
model(4).
WARNINGS
Files managed by
cpio
use a different form of magic number that is incompatible with
<magic.h>.
