[ptxdist] [PATCH] rootfs: support for symlink resolv.conf to /run

[ptxdist] [PATCH] rootfs: support for symlink resolv.conf to /run

[Jan Luebbe]

This allows using NetworkManager on a read-only root FS.

Signed-off-by: Jan Luebbe <jlu@pengutronix.de>
---
 rules/rootfs.in   |    8 ++++++++
 rules/rootfs.make |    3 +++
 2 files changed, 11 insertions(+)

diff --git a/rules/rootfs.in b/rules/rootfs.in
index 179e331..c36a79a 100644
--- a/rules/rootfs.in
+++ b/rules/rootfs.in
@@ -407,6 +407,14 @@ choice
 		help
 		  If enabled, it installs /etc/resolv.conf as a link to /proc/net/pnp.
 
+	config ROOTFS_RESOLV_RUN
+		bool
+		prompt "link to /run/resolv.conf"
+		help
+		  If enabled, it installs /etc/resolv.conf as a link to
+		  /run/resolv.conf. This is useful if the root filesystem is mounted
+		  read-only.
+
 	config ROOTFS_RESOLV_NONE
 		bool
 		prompt "none"
diff --git a/rules/rootfs.make b/rules/rootfs.make
index c60b840..4ba33d1 100644
--- a/rules/rootfs.make
+++ b/rules/rootfs.make
@@ -229,6 +229,9 @@ endif
 ifdef PTXCONF_ROOTFS_RESOLV_LINK
 	@$(call install_link, rootfs, /proc/net/pnp, /etc/resolv.conf)
 endif
+ifdef PTXCONF_ROOTFS_RESOLV_RUN
+	@$(call install_link, rootfs, /run/resolv.conf, /etc/resolv.conf)
+endif
 ifdef PTXCONF_ROOTFS_SERVICES
 	@$(call install_alternative, rootfs, 0, 0, 0644, /etc/services)
 endif
-- 
1.7.10.4


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