The new PT_IO ptrace(2) request doesn't work, since it doesn't release a lock. Since PT_IO is similar to PT_READ_D/PT_WRITE_D, I copied the PROC_UNLOCK from there and inserted in the same location. Patch, against version 1.103 of sys_process.c, attached.
This patch is also available as: http://members.chello.nl/~m.m.kettenis/FreeBSD/5-current/pt_io.patch. A bug report was filed using send-pr. It has ID kern/44065. Mark P.S. GDB will soon use this request for its data transfers if it is available. Really helps with large data transfers :-). Would be great if this problem would be fixed first though. We don't want GDB crashing the kernel, don't we ;-). --- /usr/src/sys/kern/sys_process.c.orig Wed Sep 11 10:13:54 2002 +++ /usr/src/sys/kern/sys_process.c Mon Oct 14 23:22:01 2002 @@ -647,6 +647,7 @@ kern_ptrace(struct thread *td, int req, return (error); case PT_IO: + PROC_UNLOCK(p); piod = addr; iov.iov_base = piod->piod_addr; iov.iov_len = piod->piod_len; To Unsubscribe: send mail to [EMAIL PROTECTED] with "unsubscribe freebsd-current" in the body of the message
