problem with usb driver

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originally posted by hippo@Jun 5 2006, 08:41 PM

add "make -c user/busybox clean" after step2.

boot uclinux,

run "busybox", to see what you have built in busybox.

what is your rc now?

<div align='right'><{post_snapback}> (index.php?act=findpost&pid=15934)

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Hi,hippo.

It can mount usb disk automatic,but show another erro:

<div class='quotetop'>QUOTE </div>

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Command: mount -t vfat /dev/sda1 /mnt

Kernel panic - not syncing: Attempted to kill init!

Execution Finished,Exiting[/b]

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My rc:

<div class='quotetop'>QUOTE </div>

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hostname uClinux

mount -t proc proc /proc

mount -t sysfs sysfs /sys

mount -t usbfs none /proc/bus/usb

mkdir /var/tmp

mkdir /var/log

mkdir /var/run

mkdir /var/lock

mkdir /var/empty

ifconfig lo 127.0.0.1

route add -net 127.0.0.0 netmask 255.0.0.0 lo# dhcpcd -p -a eth0 &

cat /etc/motd

sleep 15

mount -t vfat /dev/sda1 /mnt[/b]

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Now,i hope that it mount usb automatic when usb disk be detected,how can i do?

Check,

http://www.tldp.org/howto/flash-memory-howto/ (http://www.tldp.org/howto/flash-memory-howto/)

but I didn&#39;t try it yet.

I wrote a little shell script to mount the USB stick, but I dont know if this is the best solution. I wanted to port autofs first but it was to heavyweight.

For the shell script I use /proc/partitions and /proc/mounts to automount.

# !/bin/sh

while true

do

grep sda /proc/partitions > /dev/zero

if test $? -eq 0; then

grep sda /proc/mounts > /dev/zero

if test $? -eq 1; then

echo "*** mount usbdisk ***"

mount -n -t vfat /dev/sda /mnt/usb

fi

else

grep sda /proc/mounts > /dev/zero

if test $? -eq 0; then

echo "*** unmount usbdisk ***"

umount -n /mnt/usb

fi

fi

sleep 1

done

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originally posted by nacide@Jun 8 2006, 03:03 AM

i wrote a little shell script to mount the usb stick, but i dont know if this is the best solution. i wanted to port autofs first but it was to heavyweight.

for the shell script i use /proc/partitions and /proc/mounts to automount.

# !/bin/sh

while true

do

grep sda /proc/partitions > /dev/zero

if test $? -eq 0; then

grep sda /proc/mounts > /dev/zero

if test $? -eq 1; then

echo "*** mount usbdisk ***"

mount -n -t vfat /dev/sda /mnt/usb

fi

else

grep sda /proc/mounts > /dev/zero

if test $? -eq 0; then

echo "*** unmount usbdisk ***"

umount -n /mnt/usb

fi

fi

sleep 1

done

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hi,

Thank your reply.

I did follow your reply,but it can&#39;t work.

It show "Bad command or file name" for every command which your reply.

Can anyone tell me where i take a mistake?

hi,

Another question:

How to run a shell script in my apps by execve() or other programmes?

Thank you!

zhengkaike,

You need to have the commands that are called like mount, umount, grep, test, echo and sleep in your rootfs.

Maybe it will also work with the busybox versions but I did not test this.

I call the shellscript from the rc script in /etc

for example

automount.sh &

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originally posted by nacide@Jun 13 2006, 04:05 AM

zhengkaike,

you need to have the commands that are called like mount, umount, grep, test, echo and sleep in your rootfs.

maybe it will also work with the busybox versions but i did not test this.

i call the shellscript from the rc script in /etc

for example

automount.sh &

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Hi,nacide,

Thank you!

May be my busybox has some bugs,there are many errors when compiled.

I have resolved the problem by using mount() and umount(), it can work successful although it&#39;s not a best method. The code:

<div class='quotetop'>QUOTE </div>

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char spe_file[20]="/dev/sda1";

char cur_dir[]="/mnt/usb";

char um_dir[]="/mnt";

char subum_dir[]="usb/";

int main(void)

{

if(mkdir(cur_dir,O_RDWR)==-1)

{

//"/mnt/usb"exsit

if(umount(cur_dir)==-1)

{

printf("erro : umount usb!\n");

exit(1);

}

chdir(um_dir);

if(rmdir(subum_dir)==-1)

{

printf("error rmdir %s \n",subum_dir);

exit(1);

}

printf("umount usb ok!\n");

return 0;

}

if(mount(spe_file,cur_dir,"vfat",2,(char *)NULL)==-1)

{

printf("error :mount");

exit(1);

}

printf("mount usb ok!\n");

return 0;

}[/b]

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Thank you for your reply again.