clone: only update <rootfs>/etc/hostname if it exists

Signed-off-by: Dwight Engen <dwight.engen@oracle.com> Signed-off-by: Serge Hallyn <serge.hallyn@ubuntu.com>

clone: only update <rootfs>/etc/hostname if it exists
8058be39 · Dwight Engen · Serge Hallyn · 819554fe · 8058be39
Commit 8058be39 authored Jul 16, 2013 by Dwight Engen Committed by Serge Hallyn Jul 16, 2013
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lxccontainer.c src/lxc/lxccontainer.c +2 -0

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--- a/src/lxc/lxccontainer.c
+++ b/src/lxc/lxccontainer.c
@@ -1987,6 +1987,8 @@ static int clone_update_rootfs(struct lxc_container *c0,
 		ret = snprintf(path, MAXPATHLEN, "%s/etc/hostname", bdev->dest);
 		if (ret < 0 || ret >= MAXPATHLEN)
 			exit(1);
+		if (!file_exists(path))
+			exit(0);
 		if (!(fout = fopen(path, "w"))) {
 			SYSERROR("unable to open %s: ignoring\n", path);
 			exit(0);