What I should do to transmit mass of data from user to kernel space?

duyuyang · 12-31-2008, 08:39 PM

Any existent interface or tool could be suggested.

Happy New Year,
Shawn

jiml8 · 12-31-2008, 08:43 PM

Why would you want to do this? You need a driver in the kernel to support this. Then you would merely open() the driver by opening its entry in /dev then write() to it.

But you have to put that data someplace when you get it into the kernel's space, and you would ordinarily have some purpose for doing this.

jf.argentino · 01-05-2009, 06:29 AM

Or you have the mmap file ops, then you can directly use user space address space in kernel mode, and thus avoiding copy and memory space wasting... Take a look there http://lwn.net/Kernel/LDD3/

duyuyang · 01-07-2009, 03:20 AM

Thank you both.
I will use procfs and mmap() ioctl() to do it.

Cheers,
Shawn