[Fwd: [rtl] Command line arguments]

[Kay-Ulrich Scholl]

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Here's a short atoi-funtion:
include it in your source and everything wil work fine !

#define is_digit(c)     ((c) >= '0' && (c) <= '9')
static int atoi(const char *s)
{
  int i=0;

  while (is_digit(*s))
    i = i*10 + *(s++) - '0';
  return i;
}
    
Phil Daly wrote:
> 
> I am trying to pass command line arguments into a module (doesn't have to be
> a real time module, of course). I can get around the well-known problem of
> not being able to pass numeric values by hiding them in strings. The question
> is how to convert them back after - atoi does not work in the module.
> 
> To run the code (after compiling it):
> 
>   % insmod args arg1='dset=1024' arg2='freq=256' arg3='rate=8' arg4='time=4'
> 
> Here's the code
> 
> #include <linux/kernel.h>  /* printk */
> #include <linux/module.h>  /* module stuff */
> #include <stdlib.h>        /* atoi */
> 
> char *arg1 = "";
> char *arg2 = "";
> char *arg3 = "";
> char *arg4 = "";
> int dset = 0;
> int freq = 0;
> int rate = 0;
> int time = 0;
> 
> int cliParse( char *ptr )
> {
>   switch (ptr[0]) {
>     case 'd':
>     case 'D':
>       while ( *ptr != '=' ) ptr++;
>        ptr++;
>       /*
>          the following line fails - why?0
>          dset = atoi( ptr );
>          (void) printk("Decoded value = %d\n", dset);
>       */
>       ptr++;
>       (void) printk("Dset: %s\n",ptr);
>       break;
>     case 'f':
>     case 'F':
>       (void) printk("Freq: %s\n",ptr);
>       break;
>     case 'r':
>     case 'R':
>       (void) printk("Rate: %s\n",ptr);
>       break;
>     case 't':
>     case 'T':
>       (void) printk("Time: %s\n",ptr);
>       break;
>   }
>   return (0);
> }
> 
> int init_module( void )
> {
>   (void) cliParse(arg1);
>   (void) cliParse(arg2);
>   (void) cliParse(arg3);
>   (void) cliParse(arg4);
>   return (0);
> }
> 
> void cleanup_module( void )
> {
> }

-- 
     |\/\/\/|    
     |      |        Kay-Ulrich Scholl               |
     |      |        [EMAIL PROTECTED]                   |
     | (o)(o)       Forschungszentrum Informatik     |
     C      _)      Haid-und Neu-Str. 10-14          |
     | ,___|        D-76131 Karlsruhe                |
     |   /          0721/9654-218                    |
    /____\          FAX: 0721 / 9654 - 209           |
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