On Thu, Sep 01, 2011 at 11:38:42PM +0200, Francois Tigeot wrote: > > The initial name of the mount point can only be known from the > nullfs_mount function; if this patch is not applied, VOP_STATFS will > never be able to return the correct values.
New patch attached. -- Francois Tigeot
>From 8648f8f4f2e0a2797f8230d70c3046808fcd40d1 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Fran=C3=A7ois=20Tigeot?= <[email protected]> Date: Sun, 14 Aug 2011 15:13:30 +0200 Subject: [PATCH] Fix a bug in nullfs_mount() and nullfs_statfs() Most filesystems register the name of their mount point at mount time and are able to return it later with a VFS_STATFS call. nullfs did not. --- sys/vfs/nullfs/null_vfsops.c | 7 +++++++ 1 files changed, 7 insertions(+), 0 deletions(-) diff --git a/sys/vfs/nullfs/null_vfsops.c b/sys/vfs/nullfs/null_vfsops.c index 520fd1c..052be60 100644 --- a/sys/vfs/nullfs/null_vfsops.c +++ b/sys/vfs/nullfs/null_vfsops.c @@ -194,6 +194,12 @@ nullfs_mount(struct mount *mp, char *path, caddr_t data, struct ucred *cred) NULLFSDEBUG("nullfs_mount: lower %s, alias at %s\n", mp->mnt_stat.f_mntfromname, mp->mnt_stat.f_mntfromname); + bzero(mp->mnt_stat.f_mntonname, MNAMELEN); + if (path != NULL) { + (void) copyinstr(path, mp->mnt_stat.f_mntonname, MNAMELEN - 1, + &size); + } + /* * Set NCALIASED so unmount won't complain about namecache refs * still existing. @@ -286,6 +292,7 @@ nullfs_statfs(struct mount *mp, struct statfs *sbp, struct ucred *cred) if (sbp != &mp->mnt_stat) { bcopy(&mp->mnt_stat.f_fsid, &sbp->f_fsid, sizeof(sbp->f_fsid)); bcopy(mp->mnt_stat.f_mntfromname, sbp->f_mntfromname, MNAMELEN); + bcopy(mp->mnt_stat.f_mntonname, sbp->f_mntonname, MNAMELEN); } return (0); } -- 1.7.5.4
