classes/kernel: No symlink in postinst without KERNEL_IMAGETYPE_SYMLINK

The commit “Use a copy of image for kernel*.rpm if fs doesn't support
symlinks” [1] added postinst and postrm scripts to the kernel package which
create a symlink after package installation. This should not happen if
`KERNEL_IMAGETYPE_SYMLINK` is not `1`.

Background: The u-boot implementation of jffs2 does not support symlinks.
Using a hardlink or removing `${KERNEL_VERSION}` from the file name fails,
because the current postinst script replaces the file with the symlink.

[1] 8b6b95106a5d4f1f6d34209ec5c475c900270ecd

Cc: Bruce Ashfield <bruce.ashfield@gmail.com>
Cc: Richard Purdie <richard.purdie@linuxfoundation.org>
Cc: Yanfei Xu <yanfei.xu@windriver.com>
(From OE-Core rev: 6916c19c8a09d8d0334c957ae541aafcbbcf92df)

Signed-off-by: Jörg Sommer <joerg.sommer@navimatix.de>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
(cherry picked from commit 6a763401862d9ee96749ad18378b6344778c2c66)
Signed-off-by: Steve Sakoman <steve@sakoman.com>

1 files changed, 4 insertions, 2 deletions

diff --git a/meta/classes-recipe/kernel.bbclass b/meta/classes-recipe/kernel.bbclass
index c0a2056fec..4c1cb89a46 100644
--- a/meta/classes-recipe/kernel.bbclass
+++ b/meta/classes-recipe/kernel.bbclass
@@ -115,7 +115,9 @@ python __anonymous () {
 
         d.setVar('PKG:%s-image-%s' % (kname,typelower), '%s-image-%s-${KERNEL_VERSION_PKG_NAME}' % (kname, typelower))
         d.setVar('ALLOW_EMPTY:%s-image-%s' % (kname, typelower), '1')
-        d.prependVar('pkg_postinst:%s-image-%s' % (kname,typelower), """set +e
+
+        if d.getVar('KERNEL_IMAGETYPE_SYMLINK') == '1':
+            d.prependVar('pkg_postinst:%s-image-%s' % (kname,typelower), """set +e
 if [ -n "$D" ]; then
     ln -sf %s-${KERNEL_VERSION} $D/${KERNEL_IMAGEDEST}/%s > /dev/null 2>&1
 else
@@ -127,7 +129,7 @@ else
 fi
 set -e
 """ % (type, type, type, type, type, type, type))
-        d.setVar('pkg_postrm:%s-image-%s' % (kname,typelower), """set +e
+            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