get data to user space from kernel

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Hi,

I have a network driver that get specific informations from device
but I can't envisage the size of the informations. So I do a kmalloc
call when data come.

But my problem seems to come from the kmalloc because when I try to
send data to user space via an ioctl call I get a segmentation fault.

One solution would be to pass fixed size beetween the both but it
isn't the cleaner.

I've heard about copy_to_user method , is it the best way ?
Is there a way to create a struct in user space dynamicaly from kernel
space ?

thanks for any help ...

sebastien person
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• Next message: Stuart MacDonald: "Re: [PATCH] drivers/char/serial.c bug in ST16C654 detection"
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This archive was generated by hypermail 2b29 : Tue May 15 2001 - 21:00:41 EST