Function 30 - work with the current folder.

Subfunction 1 - set current folder for the thread.

• eax = 30 - function number
• ebx = 1 - subfunction number
• ecx = pointer to ASCIIZ-string with the path to new current folder

• function does not return value

Subfunction 2 - get current folder for the thread.

• eax = 30 - function number
• ebx = 2 - subfunction number
• ecx = pointer to buffer
• edx = size of buffer

• eax = size of the current folder's name (including terminating 0)

• If the buffer is too small to hold all data, only first (edx-1) bytes are copied and than terminating 0 is inserted.