[OE-core] [PATCH] init-install*: /etc/mtab make a link rather than a copy

[Awais Belal]

Using a copy would only make management of devices erroneous
and makes the system unstable in some scenarios as tools will
have to manipulate both files separately. A link ensures that
both files /proc/mounts and /etc/mtab will have the same
information at all times and this is how it is handled
on newer systems where there is such a need. Same is
suggested by busybox.

Signed-off-by: Awais Belal <awais_belal at mentor.com>
---
 meta/recipes-core/initrdscripts/files/init-install-efi.sh | 2 +-
 meta/recipes-core/initrdscripts/files/init-install.sh     | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/meta/recipes-core/initrdscripts/files/init-install-efi.sh b/meta/recipes-core/initrdscripts/files/init-install-efi.sh
index f564f4e..53f6508 100644
--- a/meta/recipes-core/initrdscripts/files/init-install-efi.sh
+++ b/meta/recipes-core/initrdscripts/files/init-install-efi.sh
@@ -123,7 +123,7 @@ mkdir -p /tmp
 
 # Create /etc/mtab if not present
 if [ ! -e /etc/mtab ]; then
-    cat /proc/mounts > /etc/mtab
+    ln -sf /etc/mtab /proc/mounts
 fi
 
 disk_size=$(parted ${device} unit mb print | grep '^Disk .*: .*MB' | cut -d" " -f 3 | sed -e "s/MB//")
diff --git a/meta/recipes-core/initrdscripts/files/init-install.sh b/meta/recipes-core/initrdscripts/files/init-install.sh
index 72ce92b..21ae0a6 100644
--- a/meta/recipes-core/initrdscripts/files/init-install.sh
+++ b/meta/recipes-core/initrdscripts/files/init-install.sh
@@ -119,7 +119,7 @@ fi
 
 mkdir -p /tmp
 if [ ! -L /etc/mtab ]; then
-    cat /proc/mounts > /etc/mtab
+    ln -sf /etc/mtab /proc/mounts
 fi
 
 disk_size=$(parted ${device} unit mb print | grep '^Disk .*: .*MB' | cut -d" " -f 3 | sed -e "s/MB//")
-- 
1.9.1