xavier.montagne ha scritto:
> OK, it is an idea !
> Do you know how to rmmod and insmod a driver from an application ?
>
You can do it with a system.
If useful attached the piece of code that I use.
regards,
daniele
> Cordialement,
> Xavier MONTAGNE
> Pragmatec
> 06.98.06.21.55
>
> ----- Original Message -----
> *From:* Daniele Ziglioli <mailto:[EMAIL PROTECTED]>
> *To:* uClinux development list <mailto:[email protected]>
> *Sent:* Tuesday, September 11, 2007 4:56 PM
> *Subject:* Re: [uClinux-dev] USB and /dev/sdx interface
>
> xavier.montagne ha scritto:
>> Hi,
>> Everytime I insert a new USB key to my SL811 controler, the
>> kernel detects properly the key and affect a new interface :
>> /dev/sda1
>> /dev/sdb1
>> /dev/sdc1
>> If I reuse the same key Linux succeeds to see it and affect the
>> same previous interface (/dev/sdb for instance).
>> But how to use everytime the same interface /dev/sda, even if I
>> remove the key and insert a different one into the same slot ?
>> Is it a standard Linux behavior to lock a /dev/sdx interface for
>> a dedicated peripheral once detected ?
>>
>> Cordialement,
>> Xavier MONTAGNE
>> Pragmatec
>> 06.98.06.21.55
>> ------------------------------------------------------------------------
>>
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> If applicable, I do rmmod/insmod of the usb storage kernel module,
> every time insert a usbkey, to avoid this.
>
> --
> Daniele Ziglioli
> Signal S.r.l.
>
> ------------------------------------------------------------------------
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--
Daniele Ziglioli
Signal S.r.l.
/*///////////////////////////////////////////////////////////////////////////
//
// This file is released under the GPL license.
//
//
// Module: usbmount
//
// Description:
// automatic usb disk mount/umount
//
// History :
// 01.00 04/01/03 DZ prima versione
// 01.01 31/08/07 DZ sleep a 3
//
///////////////////////////////////////////////////////////////////////////*/
#define TRACE printf
//#define TRACE //
#include <stdio.h>
#include <string.h>
#include <signal.h>
#include <termios.h>
#include <math.h>
#include <sys/stat.h>
#include <sys/times.h>
static void usage(int rc)
{
printf("usbmount: automatic usb disk mount/umount \n");
printf("(C) Signal s.r.l. (DZ) Ver 1.01 %s %s \n", __DATE__,
__TIME__);
printf("usage : usbmount mount_dir [umount]\n");
printf(" mount_dir : where to mount usb disk\n");
printf(" umount : to unmount a previous mounted dir\n");
exit(rc);
}
#define MAX_BUFF 512
#ifdef __NO_SBB__
int main(int argc,char **argv)
#else
int main_usbmount(int argc,char **argv)
#endif
{
int ret, tmp;
FILE *fp;
FILE *fp_part;
char buff[MAX_BUFF], *p;
char strApp[MAX_BUFF];
char strApp2[MAX_BUFF];
int found=0;
if(argc < 2) {
usage(1);
}
if(argc == 3) {
if(strcmp(argv[2], "umount")==0) {
sprintf(strApp2, "umount %s", argv[1]);
system(strApp2);
system("rmmod usb-storage");
system("rmmod hc_sl811");
exit(0);
}
}
if((fp_part = fopen("/proc/partitions", "r")) == NULL)
return 0;
sprintf(strApp2, "umount %s", argv[1]);
system(strApp2);
system("rmmod usb-storage");
system("rmmod hc_sl811");
sleep(1);
// system("rmmod usb-storage");
system("insmod hc_sl811");
system("insmod usb-storage");
sleep(3);
// cerca solo partizoni con finale numero tipo sda[1-9]
while(fgets(buff, MAX_BUFF, fp_part) && !found) {
TRACE(buff);
if(p=strstr(buff, "sd")) {
sscanf(p, "%s", strApp);
tmp = strlen(strApp)-1;
if(strApp[tmp] < '1' || strApp[tmp] > '9')
continue;
printf("TRY: mount -t vfat /dev/%s %s\n", strApp,
argv[1]);
sprintf(strApp2, "mount -t vfat /dev/%s %s", strApp,
argv[1]);
if(system(strApp2) == 0) {
TRACE("%s\n", strApp2);
found=1;
goto _ex1;
}
}
}
// riprova per tutte
printf("RETRY\n");
fseek(fp_part, 0, SEEK_SET);
while(fgets(buff, MAX_BUFF, fp_part) && !found) {
TRACE(buff);
if(p=strstr(buff, "sd")) {
sscanf(p, "%s", strApp);
printf("TRY: mount -t vfat /dev/%s %s\n", strApp,
argv[1]);
sprintf(strApp2, "mount -t vfat /dev/%s %s", strApp,
argv[1]);
if(system(strApp2) == 0) {
TRACE("%s\n", strApp2);
found=1;
goto _ex1;
}
}
}
_ex1:
fclose(fp_part);
if(found)
exit(0);
exit(1);
return 0;
}
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