Date: Wed, 27 Sep 1995 00:23:06 -0400 From: smpatel@wam.umd.edu To: FreeBSD-gnats-submit@freebsd.org Subject: kern/742: syslog errors accessing Mac hard disks [patch] Message-ID: <199509270423.AAA00560@xi.dorm.umd.edu> Resent-Message-ID: <199509270430.VAA12523@freefall.freebsd.org>
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>Number: 742
>Category: kern
>Synopsis: syslog errors accessing Mac hard disks [patch]
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-bugs
>State: open
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Tue Sep 26 21:30:01 PDT 1995
>Last-Modified:
>Originator: Sujal Patel
>Organization:
>Release: FreeBSD 2.0-BUILT-19950628 i386
>Environment:
>Description:
Every access to Mac hard disks causes errors because the partition table is
not valid. It gets a little ugly after a lot of accesses :)
>How-To-Repeat:
if /dev/sd2 is a Mac disk:
more < /dev/sd2
>Fix:
Patch to detect and ignore Mac disks is attached (/usr/src/sys/i386/isa):
--- diskslice_machdep.c.old Tue Sep 12 04:46:57 1995
+++ diskslice_machdep.c Tue Sep 26 23:58:32 1995
@@ -208,6 +208,12 @@
cp = bp->b_un.b_addr;
sname = dsname(dname, dkunit(dev), WHOLE_DISK_SLICE, RAW_PART,
partname);
+ /* Ignore Mac disks */
+ if (cp[0] == 0x45 && cp[1] == 0x52 &&
+ (cp[0x1FE] != 0x55 || cp[0x1FF] != 0xAA)) {
+ error = EINVAL;
+ goto done;
+ }
if (cp[0x1FE] != 0x55 || cp[0x1FF] != 0xAA) {
printf("%s: invalid primary partition table: no magic\n",
sname);
>Audit-Trail:
>Unformatted:
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