strcpy inside kernel space

vishalbutte · 02-28-2006, 09:02 AM

strcpy function is used many times in the kernel though its a library function..

But i am not able to use it successfully in kernel space.
i want to copy one string into buffer and then concatenate another string to buffer.

But its not working..

Is there any equivalent function to "strcpy" that can be used inside kernel space.

Library function from same linux/string.h that is "strcmp"
works out very well inside kernl space.

ta0kira · 02-28-2006, 06:34 PM

AFAIK modules can't be dynamically linked (or linked at all before 2.6), however it isn't that hard to do manually:

Code:

char *start1 = /* start point */, *start2 = start1, *copy = 0;

unsigned int size = 0;
while (*start1++) size++;

if (size) copy = new char[size];

while (size--) *copy++ = *start2++;

BTW; since the kernel isn't built with the same options as a module, it can be statically linked, which is why it can use 'strcpy'.
ta0kira