strlcpy()
Defined in string.h, the strlcpy() function copies up to size-1NUL-terminated string src to dst.
Syntax
externsize_t strlcpy(char*dst,const char*src, size_tsize);
Usage
strlcpy() takes the full size
of the buffer, not only the length, and terminates the result with NUL as
long as size is greater than 0. Include a byte for
the NUL in your size value.
The strlcpy() function returns the total
length of the string that would have been copied
if there was unlimited space. This might or might not be equal to
the length of the string actually copied, depending
on whether there was enough space. This means that you can call strlcpy() once
to find out how much space is required, then allocate it if you
do not have enough, and finally call strlcpy() a
second time to do the required copy.
This function is a common BSD-derived extension to many C libraries.