[PATCH] fs: make sure do_change_type() gets a valid type.
in [Kernel]
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From: Maxime Bizon on 28 Jun 2010 12:50 Hi, Busybox mount does not support --make-shared, and -o shared is used instead. This has the side effect that MS_SILENT can be passed too, and that prevents do_change_type() from working. This patch fixes this by computing type using only relevant bits. Signed-off-by: Maxime Bizon <mbizon(a)freebox.fr> --- fs/namespace.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/fs/namespace.c b/fs/namespace.c index f20cb57..5360463 100644 --- a/fs/namespace.c +++ b/fs/namespace.c @@ -1456,7 +1456,7 @@ static int do_change_type(struct path *path, int flag) { struct vfsmount *m, *mnt = path->mnt; int recurse = flag & MS_REC; - int type = flag & ~MS_REC; + int type = flag & (MS_SHARED | MS_PRIVATE | MS_SLAVE | MS_UNBINDABLE); int err = 0; if (!capable(CAP_SYS_ADMIN)) -- 1.7.1 -- Maxime -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |