Date: Mon, 10 Jul 2000 04:51:32 +0900 From: Motomichi Matsuzaki <mzaki@e-mail.ne.jp> To: FreeBSD-hackers@FreeBSD.ORG Subject: Re: why the RockRidge message? Message-ID: <20000710045132W.mzaki@tkc.att.ne.jp> In-Reply-To: In your message of "Sun, 9 Jul 2000 20:04:16 %2B0200" <20000709200416.B760@freebie.wbnet> References: <20000708200629.A2570@freebie.wbnet> <396871AD.B41ADFAB@newsguy.com> <863dljweu5.wl@tkc.att.ne.jp> <20000709200416.B760@freebie.wbnet>
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[-- Attachment #1 --]
Hi,
At Sun, 9 Jul 2000 20:04:16 +0200,
Wilko Bulte <wkb@chello.nl> wrote:
> > >> I really don't understand why the cd9660 filesystem needs to whine about the
> > >> RockRidge extensions everytime one mounts a RR cdrom.
> > > The right solution would be return this
> > > information upon request through some mean.
> Wouldn't it be possible to display this when one types 'mount'?
technically possible,
but there is few room on the bit fields for this purpose.
see <sys/mount.h>
MNT_* are defined for mnt_flag in struct mount,
its unused fields are only 4bits (0x0f000000).
yes, 4bits are enough for representing extension types,
however, this is the limited resource.
if extending mnt_flag to 64bit is allowed in future, we shall go ahead.
and sample implementation is attached
--
Motomichi Matsuzaki <mzaki@e-mail.ne.jp>
Dept. of Biological Sciences, Grad. School of Science, Univ. of Tokyo, Japan
[-- Attachment #2 --]
--- sys/isofs/cd9660/cd9660_vfsops.c.original Thu Jun 29 12:06:16 2000
+++ sys/isofs/cd9660/cd9660_vfsops.c Mon Jul 10 03:45:36 2000
@@ -469,6 +469,7 @@
if (high_sierra) {
/* this effectively ignores all the mount flags */
- log(LOG_INFO, "cd9660: High Sierra Format\n");
isomp->iso_ftype = ISO_FTYPE_HIGH_SIERRA;
} else
switch (isomp->im_flags&(ISOFSMNT_NORRIP|ISOFSMNT_GENS)) {
@@ -479,7 +480,7 @@
isomp->iso_ftype = ISO_FTYPE_9660;
break;
case 0:
- log(LOG_INFO, "cd9660: RockRidge Extension\n");
+ mp->mnt_flag |= MNT_ROCKRIDGE;
isomp->iso_ftype = ISO_FTYPE_RRIP;
break;
}
@@ -487,7 +488,7 @@
/* Decide whether to use the Joliet descriptor */
if (isomp->iso_ftype != ISO_FTYPE_RRIP && joliet_level) {
- log(LOG_INFO, "cd9660: Joliet Extension\n");
+ mp->mnt_flag |= MNT_JOLIET;
rootp = (struct iso_directory_record *)
sup->root_directory_record;
bcopy (rootp, isomp->root, sizeof isomp->root);
--- sys/sys/mount.h.original Wed Jul 5 06:02:16 2000
+++ sys/sys/mount.h Mon Jul 10 03:52:07 2000
@@ -152,6 +152,12 @@
#define MNT_EXPUBLIC 0x20000000 /* public export (WebNFS) */
/*
+ * cd9660 related flags.
+ */
+#define MNT_ROCKRIDGE 0x01000000
+#define MNT_JOLIET 0x02000000
+
+/*
* Flags set by internal operations,
* but visible to the user.
* XXX some of these are not quite right.. (I've never seen the root flag set)
@@ -171,6 +177,7 @@
MNT_NOSUID | MNT_NODEV | MNT_UNION | \
MNT_ASYNC | MNT_EXRDONLY | MNT_EXPORTED | \
MNT_DEFEXPORTED | MNT_EXPORTANON| MNT_EXKERB | \
+ MNT_ROCKRIDGE | MNT_JOLIET | \
MNT_LOCAL | MNT_USER | MNT_QUOTA | \
MNT_ROOTFS | MNT_NOATIME | MNT_NOCLUSTERR| \
MNT_NOCLUSTERW | MNT_SUIDDIR | MNT_SOFTDEP | \
--- sbin/mount/mount.c.original Sat Jan 15 23:28:13 2000
+++ sbin/mount/mount.c Mon Jul 10 04:45:30 2000
@@ -92,6 +92,8 @@
const char *o_name;
} optnames[] = {
{ MNT_ASYNC, "asynchronous" },
+ { MNT_ROCKRIDGE, "RockRidge extension" },
+ { MNT_JOLIET, "Joliet extension" },
{ MNT_EXPORTED, "NFS exported" },
{ MNT_LOCAL, "local" },
{ MNT_NOATIME, "noatime" },
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