Date: Fri, 02 Sep 2005 13:56:43 -0400 From: Ben Thomas <bthomas@virtualiron.com> To: FreeBSD-gnats-submit@FreeBSD.org Subject: kern/85649: [patch] allow mounting msdos files systems as root device Message-ID: <4318925B.6070507@virtualiron.com> Resent-Message-ID: <200509021800.j82I0YgK055152@freefall.freebsd.org>
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>Number: 85649
>Category: kern
>Synopsis: [patch] allow mounting msdos files systems as root device
>Confidential: no
>Severity: non-critical
>Priority: low
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: change-request
>Submitter-Id: current-users
>Arrival-Date: Fri Sep 02 18:00:34 GMT 2005
>Closed-Date:
>Last-Modified:
>Originator: Ben Thomas
>Release: FreeBSD 5.4-RELEASE i386
>Organization:
Virtual Iron Software
>Environment:
System: FreeBSD bthomas4.katana-technology.com 5.4-RELEASE FreeBSD 5.4-RELEASE #10: Sun Aug 28 13:48:00 EDT 2005 ben@bthomas4.katana-technology.com:/usr/obj/usr/home/ben/BSD/RELENG_5_4_0_RELEASE/src/sys/BEN i386
>Description:
Support mounting of msdosfs file systems as root. Yes, it's unusual. Yes,
it was needed.
This patch is against the 5_4_0_RELEASE code
>How-To-Repeat:
>Fix:
--- msdosfs_vfsops.c-DIFF begins here ---
--- /usr/src.original/sys/fs/msdosfs/msdosfs_vfsops.c Mon Jan 31 18:25:56 2005
+++ /usr/src/sys/fs/msdosfs/msdosfs_vfsops.c Thu Aug 11 16:16:26 2005
@@ -197,6 +197,25 @@
int error, flags;
mode_t accessmode;
+ /*
+ * Use NULL path to indicate we are mounting the root filesystem.
+ */
+ struct vnode *rootvp;
+ if (path == NULL) {
+ if ((error = bdevvp(rootdev, &rootvp))) {
+ printf("msdosfs_mountroot: can't find rootvp\n");
+ return (error);
+ }
+
+ if ((error = mountmsdosfs(rootvp, mp, td, NULL)) != 0)
+ return (error);
+ (void)VFS_STATFS(mp, &mp->mnt_stat, td);
+ (void) msdosfs_statfs(mp, &mp->mnt_stat, td);
+ args.mask = ALLPERMS;
+ update_mp(mp, &args, td);
+ return (0);
+ }
+
error = copyin(data, (caddr_t)&args, sizeof(struct msdosfs_args));
if (error)
return (error);
--- msdosfs_vfsops.c-DIFF ends here ---
>Release-Note:
>Audit-Trail:
>Unformatted:
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