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Full Discussion: Running bin file from a module
Top Forums Programming Running bin file from a module Post 302505549 by Chrisdot on Thursday 17th of March 2011 07:31:06 AM
Old 03-17-2011
Well, Corona688 I see you have very large knowledge about writing linux drivers, so I would be very pleased to receive any help from you.
Let's go to the very begining. I have such files:

Code:
SimpleBin:
void main() {
 write(2, "Write\n", 6);
}

Code:
CallSimpleBin:
#include <stdlib.h>

void main() {
  system("./SimpleBin");
}

Running 'CallSimpleBin' I can call 'SimpleBin'.
Now I would like to call SimpleBin from module:

Code:
SimpleModule:
#include <linux/module.h>
#include <linux/kernel.h>
#include <linux/init.h>

MODULE_LICENSE("GPL");

static int mymodule_init(void) {
 printk(KERN_ALERT "mymodule init\n");
/* here I would like to call SimpleBin */
 return 0;
}

static int mymodule_exit(void) {
 printk(KERN_ALERT "mymodule exit\n");
}
 
module_init(mymodule_init);
module_exit(mymodule_exit);

I also created static library:
Code:
SimpleLib:
void writeToScreen(char* str, int length) {
 write(2, str, length);
}

and I can call it from my user space application:
Code:
extern void writeToScreen(char* str, int length);

void main() {
 writeToScreen("Hi\n", 3);
}

it works. Unfortunatelly I cannot call 'writeToScreen' from module - it even could not compile.

Could you tell me some hints how I can do that?
I really apreciate any of your help.
Last edited by Chrisdot; 03-17-2011 at 11:32 AM..
 

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LEARN ABOUT MOJAVE

locale::codes::langext

Locale::Codes::LangExt(3pm)				 Perl Programmers Reference Guide			       Locale::Codes::LangExt(3pm)

NAME

       Locale::Codes::LangExt - standard codes for language extension identification

SYNOPSIS

	  use Locale::Codes::LangExt;

	  $lext = code2langext('acm');		       # $lext gets 'Mesopotamian Arabic'
	  $code = langext2code('Mesopotamian Arabic'); # $code gets 'acm'

	  @codes   = all_langext_codes();
	  @names   = all_langext_names();

DESCRIPTION

       The "Locale::Codes::LangExt" module provides access to standard codes used for identifying language extensions, such as those as defined in
       the IANA language registry.

       Most of the routines take an optional additional argument which specifies the code set to use. If not specified, the default IANA language
       registry codes will be used.

SUPPORTED CODE SETS

       There are several different code sets you can use for identifying language extensions. A code set may be specified using either a name, or
       a constant that is automatically exported by this module.

       For example, the two are equivalent:

	  $lext = code2langext('acm','alpha');
	  $lext = code2langext('acm',LOCALE_LANGEXT_ALPHA);

       The codesets currently supported are:

       alpha
	   This is the set of three-letter (lowercase) codes from the IANA language registry, such as 'acm' for Mesopotamian Arabic.

	   This is the default code set.

ROUTINES

       code2langext ( CODE [,CODESET] )
       langext2code ( NAME [,CODESET] )
       langext_code2code ( CODE ,CODESET ,CODESET2 )
       all_langext_codes ( [CODESET] )
       all_langext_names ( [CODESET] )
       Locale::Codes::LangExt::rename_langext  ( CODE ,NEW_NAME [,CODESET] )
       Locale::Codes::LangExt::add_langext  ( CODE ,NAME [,CODESET] )
       Locale::Codes::LangExt::delete_langext  ( CODE [,CODESET] )
       Locale::Codes::LangExt::add_langext_alias  ( NAME ,NEW_NAME )
       Locale::Codes::LangExt::delete_langext_alias  ( NAME )
       Locale::Codes::LangExt::rename_langext_code  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Codes::LangExt::add_langext_code_alias  ( CODE ,NEW_CODE [,CODESET] )
       Locale::Codes::LangExt::delete_langext_code_alias  ( CODE [,CODESET] )
	   These routines are all documented in the Locale::Codes::API man page.

SEE ALSO

       Locale::Codes
	   The Locale-Codes distribution.

       Locale::Codes::API
	   The list of functions supported by this module.

       http://www.iana.org/assignments/language-subtag-registry
	   The IANA language subtag registry.

AUTHOR

       See Locale::Codes for full author history.

       Currently maintained by Sullivan Beck (sbeck@cpan.org).

COPYRIGHT

	  Copyright (c) 2011-2013 Sullivan Beck

       This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself.

perl v5.18.2							    2013-11-04					       Locale::Codes::LangExt(3pm)
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