pivot_root: umount ., not /

This fixes pivot_root on 3.11 and older kernels. Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com> Acked-by: Stéphane Graber <stgraber@ubuntu.com>

pivot_root: umount ., not /
7981ea46 · Serge Hallyn · Stéphane Graber · 888cf064 · 7981ea46
Commit 7981ea46 authored Sep 29, 2014 by Serge Hallyn Committed by Stéphane Graber Sep 29, 2014
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conf.c src/lxc/conf.c +1 -1

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--- a/src/lxc/conf.c
+++ b/src/lxc/conf.c
@@ -1062,7 +1062,7 @@ static int setup_rootfs_pivot_root(const char *rootfs, const char *pivotdir)
 		SYSERROR("Error entering oldroot");
 		goto fail;
 	}
-	if (umount2("/", MNT_DETACH) < 0) {
+	if (umount2(".", MNT_DETACH) < 0) {
 		SYSERROR("Error detaching old root");
 		goto fail;
 	}