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base-passwd/useradd: Various improvements to useradd with RSS

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Currently there are multiple issues with useradd:

* If base-passwd rebuilds, it wipes out recipe specific user/group additions
  to sysroots and causes errors
* If recipe A adds a user and recipe B depends on A, it can't see any of the
  users/groups A adds.

This patch changes base-passwd so it always works as a postinst script
within the sysroot and copies in the master files, then runs any
postinst-useradd-* scripts afterwards to add additional user/groups.

The postinst-useradd-* scripts are tweaked so that if /etc/passwd doesn't exist
they just exit, knowning they'll be executed later. We also add a dummy entry to
the dummy passwd file from pseudo so we can avoid this too.

There is a problem where if recipe A adds a user and recipe B depends on A but
doesn't care about users, it may not have a dependency on the useradd/groupadd
tools which would therefore not be available in B's sysroot. We therefore also
tweak postinst-useradd-* scripts so that if the tools aren't present we simply
don't add users. If you need the users, you add a dependency on the tools in the
recipe and they'll be added.

We add postinst-* to SSTATE_SCAN_FILES since almost any postinst script of this
kind is going to need relocation help.

We also ensure that the postinst-useradd script is written into the sstate
object as the current script was only being added in a recipe local way.

Thanks to Peter Kjellerstedt <pkj@axis.com> and Patrick Ohly for some pieces
of this patch.

[Yocto #11124]

(From OE-Core rev: 1b5afaf437f7a1107d4edca8eeb668b9618a5488)

Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Richard Purdie
2017-04-12 18:29:09 +01:00
parent 053e545b9d
commit b5c383074a
4 changed files with 51 additions and 7 deletions
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2
meta/classes/sstate.bbclass
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@@ -31,7 +31,7 @@ SSTATE_DUPWHITELIST += "${STAGING_ETCDIR_NATIVE}/sgml ${STAGING_DATADIR_NATIVE}/
# Archive the sources for many architectures in one deploy folder
SSTATE_DUPWHITELIST += "${DEPLOY_DIR_SRC}"
SSTATE_SCAN_FILES ?= "*.la *-config *_config"
SSTATE_SCAN_FILES ?= "*.la *-config *_config postinst-*"
SSTATE_SCAN_CMD ??= 'find ${SSTATE_BUILDDIR} \( -name "${@"\" -o -name \"".join(d.getVar("SSTATE_SCAN_FILES").split())}" \) -type f'
SSTATE_SCAN_CMD_NATIVE ??= 'grep -Irl -e ${RECIPE_SYSROOT} -e ${RECIPE_SYSROOT_NATIVE} ${SSTATE_BUILDDIR}'