classes/kernel: Use a copy of image for kernel*.rpm if fs doesn't support symlinks

Some filesystems don't support symlink, then you will get failure when
you install or update the kernel rpm package. Now we use a copy of
image for these filesystems instead of symlink.

Suggested-by: Bruce Ashfield <bruce.ashfield@gmail.com>
Suggested-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(From OE-Core rev: bb946b8cdbd01408bfa0ba8e53f9e09931dfb29d)

Signed-off-by: Yanfei Xu <yanfei.xu@windriver.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

1 files changed, 19 insertions, 3 deletions

diff --git a/meta/classes/kernel.bbclass b/meta/classes/kernel.bbclass
index c9044befbe..c834aad033 100644
--- a/meta/classes/kernel.bbclass
+++ b/meta/classes/kernel.bbclass
@@ -95,6 +95,25 @@ python __anonymous () {
         d.appendVar('RDEPENDS_%s-image' % kname, ' %s-image-%s' % (kname, typelower))
         d.setVar('PKG_%s-image-%s' % (kname,typelower), '%s-image-%s-${KERNEL_VERSION_PKG_NAME}' % (kname, typelower))
         d.setVar('ALLOW_EMPTY_%s-image-%s' % (kname, typelower), '1')
+        d.setVar('pkg_postinst_%s-image-%s' % (kname,typelower), """set +e
+if [ -n "$D" ]; then
+    ln -sf %s-${KERNEL_VERSION} $D/${KERNEL_IMAGEDEST}/%s > /dev/null 2>&1
+else
+    ln -sf %s-${KERNEL_VERSION} ${KERNEL_IMAGEDEST}/%s > /dev/null 2>&1
+    if [ $? -ne 0 ]; then
+        echo "Filesystem on ${KERNEL_IMAGEDEST}/ doesn't support symlinks, falling back to copied image (%s)."
+        install -m 0644 ${KERNEL_IMAGEDEST}/%s-${KERNEL_VERSION} ${KERNEL_IMAGEDEST}/%s
+    fi
+fi
+set -e
+""" % (type, type, type, type, type, type, type))
+        d.setVar('pkg_postrm_%s-image-%s' % (kname,typelower), """set +e
+if [ -f "${KERNEL_IMAGEDEST}/%s" -o -L "${KERNEL_IMAGEDEST}/%s" ]; then
+    rm -f ${KERNEL_IMAGEDEST}/%s  > /dev/null 2>&1
+fi
+set -e
+""" % (type, type, type))
+
 
     image = d.getVar('INITRAMFS_IMAGE')
     # If the INTIRAMFS_IMAGE is set but the INITRAMFS_IMAGE_BUNDLE is set to 0,
@@ -386,9 +405,6 @@ kernel_do_install() {
         install -d ${D}/boot
         for imageType in ${KERNEL_IMAGETYPES} ; do
                 install -m 0644 ${KERNEL_OUTPUT_DIR}/${imageType} ${D}/${KERNEL_IMAGEDEST}/${imageType}-${KERNEL_VERSION}
-                if [ "${KERNEL_PACKAGE_NAME}" = "kernel" ]; then
-                        ln -sf ${imageType}-${KERNEL_VERSION} ${D}/${KERNEL_IMAGEDEST}/${imageType}
-                fi
         done
         install -m 0644 System.map ${D}/boot/System.map-${KERNEL_VERSION}
         install -m 0644 .config ${D}/boot/config-${KERNEL_VERSION}