/usr/include/gutenprint/module.h is in libgutenprint-dev 5.2.11-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* "$Id: module.h,v 1.1 2004/09/17 18:38:01 rleigh Exp $"
*
* libgimpprint module loader - load modules with libltdl/libdl.
*
* Copyright 1997-2000 Michael Sweet (mike@easysw.com),
* Robert Krawitz (rlk@alum.mit.edu) and Michael Natterer (mitch@gimp.org)
* Copyright 2002 Roger Leigh (rleigh@debian.org)
*
* This program is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2 of the License, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/**
* @file gutenprint/module.h
* @brief Module functions.
*/
/*
* This file must include only standard C header files. The core code must
* compile on generic platforms that don't support glib, gimp, gtk, etc.
*/
#ifndef GUTENPRINT_MODULE_H
#define GUTENPRINT_MODULE_H
#ifdef __cplusplus
extern "C" {
#endif
#include <gutenprint/list.h>
#ifdef USE_LTDL
#include <ltdl.h>
#elif defined(USE_DLOPEN)
#include <dlfcn.h>
#endif
#ifdef USE_LTDL
#define DLOPEN(Filename) lt_dlopen(Filename)
#define DLSYM(Handle, Symbol) lt_dlsym(Handle, Symbol)
#define DLCLOSE(Handle) lt_dlclose(Handle)
#define DLERROR() lt_dlerror()
#elif defined(USE_DLOPEN)
#define DLOPEN(Filename) dlopen(Filename, RTLD_LAZY)
#define DLSYM(Handle, Symbol) stp_dlsym(Handle, Symbol, modulename)
#define DLCLOSE(Handle) dlclose(Handle)
#define DLERROR() dlerror()
#endif
typedef struct stp_module_version
{
int major;
int minor;
} stp_module_version_t;
typedef enum
{
STP_MODULE_CLASS_INVALID,
STP_MODULE_CLASS_MISC,
STP_MODULE_CLASS_FAMILY,
STP_MODULE_CLASS_COLOR,
STP_MODULE_CLASS_DITHER
} stp_module_class_t;
typedef struct stp_module
{
const char *name; /* module name */
const char *version; /* module version number */
const char *comment; /* description of module function */
stp_module_class_t class; /* type of module */
#ifdef USE_LTDL
lt_dlhandle handle; /* ltdl module pointer (set by libgimpprint) */
#else
void *handle; /* dlopen or static module pointer */
#endif
int (*init)(void); /* initialisation function */
int (*fini)(void); /* finalise (cleanup and removal) function */
void *syms; /* pointer to e.g. a struct containing
internal module symbols (class-specific
functions and data) */
} stp_module_t;
extern int stp_module_load(void);
extern int stp_module_exit(void);
extern int stp_module_open(const char *modulename);
extern int stp_module_init(void);
extern int stp_module_close(stp_list_item_t *module);
extern stp_list_t *stp_module_get_class(stp_module_class_t class);
#ifdef __cplusplus
}
#endif
#endif /* GUTENPRINT_MODULE_H */
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