createrepo: Implement --dbpath command line option

--dbpath option can be used in cases where users don't want
createrepo to use system rpm db to avoid possible collisiouns
with other programs.

For bitbake builds it would be possible to specify different
databases even for every createrepo run. Considering that rootfs
builds can run multiple createrepo in parallel, it can help to avoid
race conditions caused by accessing or creating the same rpm database
by multiple createrepo instances at the same time.

(From OE-Core rev: 7dc6d50ac1fc20a262b62330d950a8e30acdf0b6)

Signed-off-by: Ed Bartosh <ed.bartosh@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-support/createrepo/createrepo/createrepo-dbpath.patch

@@ -0,0 +1,61 @@
+createrepo: Implement --dbpath command line option
+
+--dbpath option allows to specify path to the directory
+with rpm database. By default createrepo uses or creates
+rpm database in /var/lib/rpm/
+
+Upstream-Status: Pending
+
+Signed-off-by: Ed Bartosh <ed.bartosh@linux.intel.com>
+
+--- createrepo-0.4.11.orig/genpkgmetadata.py 2015-03-30 22:18:19.904000000 +0300
++++ createrepo-0.4.11/genpkgmetadata.py 2015-03-30 22:28:49.208000000 +0300
+@@ -65,6 +65,7 @@
+      -p, --pretty = output xml files in pretty format.
+      --update = update existing metadata (if present)
+      -d, --database = generate the sqlite databases.
++     --dbpath <dir> = specify path to rpm db directory.
+     """)
+ 
+     sys.exit(retval)
+@@ -72,10 +73,13 @@
+ class MetaDataGenerator:
+     def __init__(self, cmds):
+         self.cmds = cmds
+-        self.ts = rpm.TransactionSet()
+         self.pkgcount = 0
+         self.files = []
+ 
++        if self.cmds['dbpath']:
++            rpm.addMacro("_dbpath", self.cmds['dbpath'])
++        self.ts = rpm.TransactionSet()
++
+     def _os_path_walk(self, top, func, arg):
+         """Directory tree walk with callback function.
+          copy of os.path.walk, fixes the link/stating problem
+@@ -435,6 +439,7 @@
+     cmds['dir-pattern-match'] = ['.*bin\/.*', '^\/etc\/.*']
+     cmds['skip-symlinks'] = False
+     cmds['pkglist'] = []
++    cmds['dbpath'] = None
+ 
+     try:
+         gopts, argsleft = getopt.getopt(args, 'phqVvndg:s:x:u:c:o:CSi:', ['help', 'exclude=',
+@@ -442,7 +447,7 @@
+                                                                   'baseurl=', 'groupfile=', 'checksum=',
+                                                                   'version', 'pretty', 'split', 'outputdir=',
+                                                                   'noepoch', 'checkts', 'database', 'update',
+-                                                                  'skip-symlinks', 'pkglist='])
++                                                                  'skip-symlinks', 'pkglist=', 'dbpath='])
+     except getopt.error, e:
+         errorprint(_('Options Error: %s.') % e)
+         usage()
+@@ -516,6 +521,8 @@
+                 cmds['skip-symlinks'] = True
+             elif arg in ['-i', '--pkglist']:
+                 cmds['pkglist'] = a
++            elif arg == '--dbpath':
++                cmds['dbpath'] = os.path.realpath(a)
+                                 
+     except ValueError, e:
+         errorprint(_('Options Error: %s') % e)

meta/recipes-support/createrepo/createrepo_0.4.11.bb

@@ -14,6 +14,7 @@ SRC_URI= "http://createrepo.baseurl.org/download/${BP}.tar.gz \
           file://python-scripts-should-use-interpreter-from-env.patch \
 	  file://createrepo-rpm549.patch \
 	  file://recommends.patch \
+	  file://createrepo-dbpath.patch \
 	  file://rpm-createsolvedb.py \
          "