Hi all,
Just playing with the kernel code, I added a silly function
struct file_operations *get_socket_fileops ()
{
return &socket_file_ops;
}
at the bottom of net/socket.c, and
EXPORT_SYMBOL(get_socket_fileops);
into net/netsyms.c, expecting to be able to call this function
from a loadable module and to printk the function addresses
from the file_operations struct.
However, on rebooting into this modified kernel, my test module
fails to load, saying
foo.o: unresolved symbol get_socket_fileops
even though the symbol looks exported in vmlinux (nm) and
in /boot/System.map:
c020ca90 T get_socket_fileops
0c2b52bf ? __kstrtab_get_socket_fileops
0c2ba358 ? __ksymtab_get_socket_fileops
which looks exactly like sock_create, which the module *is*
able to address.
Any pointers?
thanks,
-prasad.
------------------------
V. Guruprasad ('prasad'),
http://www.columbia.edu/~vg96
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This archive was generated by hypermail 2b29 : Tue Apr 30 2002 - 22:00:17 EST