On 07/10/14 18:39, Andreas Oberritter wrote:
On 08.10.2014 00:49, Aníbal Limón wrote:
I reviewed the patches and looks good, only i have a comment
in this file,

http://git.openembedded.org/openembedded-core-contrib/commit/?h=obi/dora&id=a5f18409d1bf2877f898b902cafc317cbf7462e4


I didn't know if the same apply for rpm and ipk.
I guess so. I'm pretty certain that opkg behaves just like dpkg in this
regard. I never used rpm, though.

To reproduce the problem, boot an image containing busybox, but not
bash. Then install bash and deinstall it again. Deinstallation fails,
resulting in a dangling symlink (/bin/sh -> /bin/bash).

There are a lot of patches,  Do you have a plan to port them to master?

I can help with that.
I'd like to, but I won't have time to do any testing with master during
the next weeks. I could rebase my patches onto master and provide a tree
for you to test. Or you could cherry-pick whatever patches you like and
submit them to the mailing list after testing. Most patches should apply
without changes, but those touching rootfs_deb.bbclass and
package_deb.bbclass will need some porting. What do you think?

I think we need to port these patches in small changes in order to do
a good review,

I propose,

1. dpkg update-alternatives offline
2. apt-get upgrade version
3. another minor changes like pkg-config

Makes sense?


Regards,
Andreas


Best regards.

On 07/10/14 15:36, Andreas Oberritter wrote:
Hello Aníbal,

On 07.10.2014 22:00, Aníbal Limón wrote:
Busybox prerm scripts create temp directory and fill with
symlinks to common utilities in order to upgrade itself, PATH
is exported but dpkg didn't take a look of this links and fails.

In order to fix,

     Changed temp directory to /usr/loca/bin in debian packages.
     Added missing links for utilities tar, find, tail, cut.

Busybox syslog prerm script tries to stop the daemon but if already
stopped returns 1 then causes that dpkg fails because it expects 0.

In order to fix,

     Added workaround to exit 0 in debian packages.

[YOCTO #6768]
please don't overwrite files in /usr/local/bin! People may have their
own tools there.

This, and the creation of these symlinks in a tmpdir in the first place,
looks wrong to me.

I think you'd better get rid of update-alternatives-cworth and use an
implementation written in C.

See
http://git.openembedded.org/openembedded-core-contrib/log/?h=obi/dora
for many dpkg-related fixes including an offline-capable version of
dpkg's update-alternatives. I couldn't test these with master, but this
branch contains most if not all patches to dpkg backported from master
to dora.

Regards,
Andreas

Signed-off-by: Aníbal Limón <anibal.li...@linux.intel.com>
---
   meta/recipes-core/busybox/busybox.inc | 46
++++++++++++++++++++++++++++++++++-
   1 file changed, 45 insertions(+), 1 deletion(-)

diff --git a/meta/recipes-core/busybox/busybox.inc
b/meta/recipes-core/busybox/busybox.inc
index bd66e4f..61f12b4 100644
--- a/meta/recipes-core/busybox/busybox.inc
+++ b/meta/recipes-core/busybox/busybox.inc
@@ -377,13 +377,46 @@ pkg_postinst_${PN} () {
               fi
           done
       fi
+
+    # Workaround for deb packages, clean
+        if [ "$DPKG_MAINTSCRIPT_PACKAGE"x != x ]; then
+        tmpdir='/usr/local/bin'
+        rm -f $tmpdir/[
+        rm -f $tmpdir/test
+        rm -f $tmpdir/head
+        rm -f $tmpdir/sh
+        rm -f $tmpdir/basename
+        rm -f $tmpdir/echo
+        rm -f $tmpdir/mv
+        rm -f $tmpdir/ln
+        rm -f $tmpdir/dirname
+        rm -f $tmpdir/rm
+        rm -f $tmpdir/sed
+        rm -f $tmpdir/sort
+        rm -f $tmpdir/grep
+        rm -f $tmpdir/tar
+        rm -f $tmpdir/find
+        rm -f $tmpdir/tail
+        rm -f $tmpdir/cut
+        fi
   }
     pkg_prerm_${PN} () {
       # This is so you can make busybox commit suicide - removing
busybox with no other packages
       # providing its files, this will make update-alternatives work,
but the update-rc.d part
       # for syslog, httpd and/or udhcpd will fail if there is no
other package providing sh
-    tmpdir=`mktemp -d /tmp/busyboxrm-XXXXXX`
+
+        # Workaround for deb packages, dpkg don't take into account
exported PATH variable,
+        # use instead local directory.
+        if [ "$DPKG_MAINTSCRIPT_PACKAGE"x == x ]; then
+        tmpdir=`mktemp -d /tmp/busyboxrm-XXXXXX`
+        else
+        tmpdir='/usr/local/bin'
+        if [ ! -e $tmpdir ]; then
+            mkdir -p $tmpdir
+        fi
+    fi
+
       ln -s /bin/busybox $tmpdir/[
       ln -s /bin/busybox $tmpdir/test
       ln -s /bin/busybox $tmpdir/head
@@ -397,6 +430,11 @@ pkg_prerm_${PN} () {
       ln -s /bin/busybox $tmpdir/sed
       ln -s /bin/busybox $tmpdir/sort
       ln -s /bin/busybox $tmpdir/grep
+    ln -s /bin/busybox $tmpdir/tar
+    ln -s /bin/busybox $tmpdir/find
+    ln -s /bin/busybox $tmpdir/tail
+    ln -s /bin/busybox $tmpdir/cut
+
       export PATH=$PATH:$tmpdir
   }
   @@ -405,6 +443,12 @@ pkg_prerm_${PN}-syslog () {
       if test "x$D" = "x"; then
           if test "$1" = "upgrade" -o "$1" = "remove"; then
               /etc/init.d/syslog stop
+
+            # Workaround for deb packages, if syslog is already
stopped returns
+            # 1 but dpkg expects 0 and then fails.
+            if [ "$DPKG_MAINTSCRIPT_PACKAGE"x != x ]; then
+                exit 0
+            fi
           fi
       fi
   }


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