linux man page for packfile_vtable

PACKFILE_VTABLE(3alleg4)					  Allegro manual					  PACKFILE_VTABLE(3alleg4)

NAME
       PACKFILE_VTABLE - Packfile vtable structure, for custom packfiles. Allegro game programming library.

SYNOPSIS
       #include <allegro.h>

       typedef struct PACKFILE_VTABLE

DESCRIPTION
	  int pf_fclose(void *userdata);
	  int pf_getc(void *userdata);
	  int pf_ungetc(int c, void *userdata);
	  long pf_fread(void *p, long n, void *userdata);
	  int pf_putc(int c, void *userdata);
	  long pf_fwrite(const void *p, long n, void *userdata);
	  int pf_fseek(void *userdata, int offset);
	  int pf_feof(void *userdata);
	  int pf_ferror(void *userdata);

       This  is the vtable which must be provided for custom packfiles, which then can read from and write to wherever you like (eg. files in mem-
       ory). You should provide all the entries of the vtable, even if they are empty stubs doing nothing, to avoid Allegro  (or  you)	calling  a
       NULL method at some point.

SEE ALSO
       pack_fopen_vtable(3alleg4), expackf(3alleg4)

Allegro 							   version 4.4.2					  PACKFILE_VTABLE(3alleg4)