#! /usr/sbin/dtrace -s
/* samba-file-io.d: report file I/O performed by samba.
*
* Copyright (C) 2006 Apple Computer Inc. All rights reserved.
*/
#pragma D option quiet
BEGIN
{
progname = "smbd";
printf("%5s %20s %20s %20s\n",
"FD", "Function", "IO Size (bytes)", "Elapsed nsec");
}
syscall::read:entry,
syscall::pread:entry,
syscall::read_nocancel:entry,
syscall::pread_nocancel:entry,
syscall::write:entry,
syscall::pwrite:entry,
syscall::write_nocancel:entry,
syscall::pwrite_nocancel:entry
/ execname == progname /
{
self->fd = arg0;
/* arg1 is the buffer pointer */
self->size = arg2;
/* arg3 is the offset for p* variants */
self->stamp = timestamp;
}
syscall::readv:entry,
syscall::writev:entry,
syscall::readv_nocancel:entry,
syscall::writev_nocancel:entry
/ execname == progname /
{
/* FIXME */
trace(arg0);
}
syscall::aio_read:entry,
syscall::aio_write:entry
/ execname == progname /
{
/* FIXME */
trace(arg0);
}
syscall::sendfile:entry
/ execname == progname /
{
self->fd = arg0;
/* arg1 is the socket fd */
/* arg2 is the file offset */
self->size = *(int64_t *)copyin(arg3, 8);
/* arg4 is the header/footer iovec */
/* arg5 is the flags */
self->stamp = timestamp;
}
syscall::read:return,
syscall::pread:return,
syscall::read_nocancel:return,
syscall::pread_nocancel:return,
syscall::write:return,
syscall::pwrite:return,
syscall::write_nocancel:return,
syscall::pwrite_nocancel:return,
syscall::sendfile:return
/ execname == progname /
{
elapsed = timestamp - self->stamp;
printf("%5d %20s %20u %20u\n",
self->fd, probefunc, self->size, elapsed);
}