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authorphk <phk@FreeBSD.org>1999-05-11 19:55:07 +0000
committerphk <phk@FreeBSD.org>1999-05-11 19:55:07 +0000
commit7e26ca1d1a4bb6507cb6f9241f2d35b1048eaecd (patch)
tree31ecebf331e4a644fafb96ecafe7d2b6b1a24d39 /sys/dev/vn
parentc783fdfffac012af2a31c3939b62a23b94680404 (diff)
downloadFreeBSD-src-7e26ca1d1a4bb6507cb6f9241f2d35b1048eaecd.zip
FreeBSD-src-7e26ca1d1a4bb6507cb6f9241f2d35b1048eaecd.tar.gz
Divorce "dev_t" from the "major|minor" bitmap, which is now called
udev_t in the kernel but still called dev_t in userland. Provide functions to manipulate both types: major() umajor() minor() uminor() makedev() umakedev() dev2udev() udev2dev() For now they're functions, they will become in-line functions after one of the next two steps in this process. Return major/minor/makedev to macro-hood for userland. Register a name in cdevsw[] for the "filedescriptor" driver. In the kernel the udev_t appears in places where we have the major/minor number combination, (ie: a potential device: we may not have the driver nor the device), like in inodes, vattr, cdevsw registration and so on, whereas the dev_t appears where we carry around a reference to a actual device. In the future the cdevsw and the aliased-from vnode will be hung directly from the dev_t, along with up to two softc pointers for the device driver and a few houskeeping bits. This will essentially replace the current "alias" check code (same buck, bigger bang). A little stunt has been provided to try to catch places where the wrong type is being used (dev_t vs udev_t), if you see something not working, #undef DEVT_FASCIST in kern/kern_conf.c and see if it makes a difference. If it does, please try to track it down (many hands make light work) or at least try to reproduce it as simply as possible, and describe how to do that. Without DEVT_FASCIST I belive this patch is a no-op. Stylistic/posixoid comments about the userland view of the <sys/*.h> files welcome now, from userland they now contain the end result. Next planned step: make all dev_t's refer to the same devsw[] which means convert BLK's to CHR's at the perimeter of the vnodes and other places where they enter the game (bootdev, mknod, sysctl).
Diffstat (limited to 'sys/dev/vn')
-rw-r--r--sys/dev/vn/vn.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/sys/dev/vn/vn.c b/sys/dev/vn/vn.c
index a26100c..f3db336 100644
--- a/sys/dev/vn/vn.c
+++ b/sys/dev/vn/vn.c
@@ -38,7 +38,7 @@
* from: Utah Hdr: vn.c 1.13 94/04/02
*
* from: @(#)vn.c 8.6 (Berkeley) 4/1/94
- * $Id: vn.c,v 1.77 1999/05/07 07:03:20 phk Exp $
+ * $Id: vn.c,v 1.78 1999/05/07 10:10:10 phk Exp $
*/
/*
@@ -80,6 +80,7 @@
#include <sys/mount.h>
#include <sys/vnode.h>
#include <sys/fcntl.h>
+#include <sys/conf.h>
#include <sys/disklabel.h>
#include <sys/diskslice.h>
#include <sys/stat.h>
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