errno ENOLCK

[Tamminen Eero <t150315@students.cc.tut.fi>]

I noticed that MiNTlib PL46 errno.h doesn't include defination for
ENOLCK (locking unavailable) and I replaced it with EINVAL (invalid
function) that ram-fs returns.  So, now I'm wondering whether this
will work on all MiNT filesystems not implementing locking?

	- Eero

------ excerpt from linux errno manual page --------
POSIX lists the following symbolic error names:
       E2BIG		Arg list too long
       EACCES		Permission denied
       EAGAIN		Resource temporarily unavailable
       EBADF		Bad file descriptor
       EBUSY		Resource busy
       ECHILD		No child processes
       EDEADLK		Resource deadlock avoided
       EDOM		Domain error
       EEXIST		File exists
       EFAULT		Bad address
       EFBIG		File too large
       EINTR		Interrupted function call
       EINVAL		Invalid argument
       EIO		Input/output error
       EISDIR		Is a directory
       EMFILE		Too many open files
       EMLINK		Too many links
       ENAMETOOLONG	Filename too long
       ENFILE		Too many open files in system
       ENODEV		No such device
       ENOENT		No such file or directory
       ENOEXEC		Exec format error
       ENOLCK		No locks available
       ENOMEM		Not enough space
       ENOSPC		No space left on device
       ENOSYS		Function not implemented
       ENOTDIR		Not a directory
       ENOTEMPTY	Directory not empty
       ENOTTY		Inappropriate I/O control operation
       ENXIO		No such device or address
       EPERM		Operation not permitted
       EPIPE		Broken pipe
       ERANGE		Result too large
       EROFS		Read-only file system
       ESPIPE		Invalid seek
       ESRCH		No such process
       EXDEV		Improper link