[OE-core] Ownership issue in package contents

Tue Mar 31 21:21:58 UTC 2015

On Tue, 31 Mar 2015 16:09:42 -0500 Mark Hatle <mark.hatle at windriver.com> wrote:

> On 3/31/15 4:01 PM, Mario Domenech Goulart wrote:
>> On Tue, 31 Mar 2015 15:51:50 -0500 Mark Hatle <mark.hatle at windriver.com> wrote:
>> 
>>> On 3/31/15 3:33 PM, Mario Domenech Goulart wrote:
>>>>
>>>> On Tue, 31 Mar 2015 13:23:00 -0500 Mark Hatle <mark.hatle at windriver.com> wrote:
>>>>
>>>>> On 3/31/15 12:20 PM, Mario Domenech Goulart wrote:
>>>>>>
>>>>>> On Tue, 31 Mar 2015 14:50:06 +0100 "Burton, Ross" <ross.burton at intel.com> wrote:
>>>>>>
>>>>>>> On 27 March 2015 at 17:31, Mario Domenech Goulart <mario at ossystems.com.br> wrote:
>>>>>>>
>>>>>>>     Note that, although I run "chown -R foo:foo ${D}${libdir}/foo" in
>>>>>>>     the recipe, ./usr/lib/foo/ in the package is owned by root.
>>>>>>>     However, its content has the right ownership.
>>>>>>>
>>>>>>> Looks like a bug in pseudo to me, can you file a bug for that?
>>>>>>
>>>>>> Sure.  Filed #7554.
>>>>>
>>>>> I'd suggest you look at meta/classes/package.bbclass "fixup_perms" function.
>>>>>
>>>>> The ${D}${libdir} (and above) are "corrected" to be 'root:root' by this
>>>>> function.  I don't know why 'foo' would be, but if it's a standard defined
>>>>> variable -- or if 'directory walking' is enabled it could end up doing this as well.
>>>>>
>>>>> The control file for this is in meta/files/fs-perms.txt (unless otherwise
>>>>> defined by a distribution or other configuration file.)
>>>>
>>>> Thanks a lot.  You seem to have guided me exactly to what causes the
>>>> issue.
>>>>
>>>>>
>>>>> Format of the file is:
>>>>>
>>>>> # The format of this file
>>>>> #
>>>>> #<path> <mode>  <uid>   <gid>   <walk>  <fmode> <fuid>  <fgid>
>>>> ...
>>>>>
>>>>> The default is:
>>>> ...
>>>>> libexecdir	0755 root root false - - -
>>>> ...
>>>>
>>>> This variable seems to be the cause of problems:
>>>>
>>>> $ bitbake -e foo | grep libexecdir=
>>>> export libexecdir="/usr/lib/foo"
>>>>
>>>> As far as I understand, package.bbclass may use a user-configured
>>>> permissions table (via FILESYSTEM_PERMS_TABLES), but I'm not sure if
>>>> this is the right "fix" for the case in question.  I'd have to hardcode
>>>> the owner of /usr/lib/foo to be "foo", but foo may not be available when
>>>> packaging other recipes.
>>>
>>> Ok, good this answers the question as to "why" it's happening.  You can easily
>>> fix this by adding a configuration specific fs-perms.txt file (can name it
>>> anything) that overrides that setting and add it to the FILESYSTEM_PERMS_TABLES.
>>>  You can do this globally in a layer, a distribution or even just a recipe.
>>>
>>> In your recipe you can likely do something like:
>>>
>>> FILESYSTEM_PERMS_TABLES ?= "files/fs-perms.txt"
>>> FILESYSTEM_PERMS_TABLES += "${THISDIR}/files/recipe-perms.txt"
>>>
>>> (Do the ?= first in case it's already set by someone else, then add your recipe
>>> specific perms later)
>>>
>>> Contents of the "${THISDIR}/files/recipe-perms.txt":
>>>
>>> ${libexecdir} 0755 myuid mygid true - myuid mygid
>>>
>>> Then you can even skip the chown -R, as the system will do it for you.
>> 
>> I actually had tried that, but I got errors -- probably because the
>> ownership will be set for each package that installs ${libexecdir}, and
>> which is processed before the recipe that actually creates the
>> user/group specified for ${libexecdir} in the file pointed by
>> FILESYSTEM_PERMS_TABLES.
>
> This is a bug then.  The owner/group correction is supposed to be made AFTER the
> user/groups have been added to the system (sysroot) via the adduser.  THAT is a
> bug that IMHO should be fixed sooner, rather then later.
>
> It might be as simple as the install sysroot (${D}) configuration with pseudo
> isn't pointing to the right /etc/passwd and /etc/group.  I believe it should be
> pointing to the one in the regular sysroot repository.

I should also have mentioned that initially I set
FILESYSTEM_PERMS_TABLES globally.

Now I set it in the foo recipe, but still get errors:

----------------------------8<---------------------------------
ERROR: Error executing a python function in .../foo.bb:

The stack trace of python calls that resulted in this exception/failure was:
File: 'fixup_perms', lineno: 231, function: <module>
     0227:                    each_file = os.path.join(root, f)
     0228:                    fix_perms(each_file, fs_perms_table[dir].fmode, fs_perms_table[dir].fuid, fs_perms_table[dir].fgid, dir)
     0229:
     0230:
 *** 0231:fixup_perms(d)
     0232:
File: 'fixup_perms', lineno: 173, function: fixup_perms
     0169:                if len(lsplit) != 8 and not (len(lsplit) == 3 and lsplit[1].lower() == "link"):
     0170:                    msg = "Fixup perms: %s invalid line: %s" % (conf, line)
     0171:                    package_qa_handle_error("perm-line", msg, d)
     0172:                    continue
 *** 0173:                entry = fs_perms_entry(d.expand(line))
     0174:                if entry and entry.path:
     0175:                    fs_perms_table[entry.path] = entry
     0176:            f.close()
     0177:
File: 'fixup_perms', lineno: 32, function: __init__
  File "fixup_perms", line 32, in __init__

File: 'fixup_perms', lineno: 43, function: _setdir
  File "fixup_perms", line 43, in _setdir

File: 'fixup_perms', lineno: 67, function: _procuid
  File "fixup_perms", line 67, in _procuid

Exception: KeyError: 'getpwnam(): name not found: foo'
---------------------------->8---------------------------------

I still have the chown line in do_install, and that seems to "work"
(i.e., it doesn't cause errors).  The error above seems be caused by
something in do_package (fix_perms, specifically) that is not using the
proper authentication database.

Best wishes.
Mario
-- 
http://www.ossystems.com.br