wic: use native parted

Used exec_native_cmd instead of find_binary_path to run parted.
Got rid of find_binary_path as it's not used anywhere else.

There are several tools wic is trying to find not only in sysroot,
but also in host root. Parted is a special as on some distros it's
installed in /usr/sbin, which is not in the user's PATH. This makes
wic to fail with error "External command 'parted' not found, exiting."

[YOCTO #7122]

(From OE-Core rev: 76adf38c0d8e0faf04a5ecb3fcfbe831c85bb81f)

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

scripts/lib/wic/imager/direct.py

@@ -241,7 +241,7 @@ class DirectImageCreator(BaseImageCreator):
         """
         parts = self._get_parts()
 
-        self.__image = Image()
+        self.__image = Image(self.native_sysroot)
 
         for p in parts:
             # as a convenience, set source to the boot partition source

scripts/lib/wic/utils/fs_related.py

@@ -25,24 +25,6 @@ from wic.utils import runner
 from wic.utils.errors import *
 from wic.utils.oe.misc import *
 
-def find_binary_path(binary):
-    if os.environ.has_key("PATH"):
-        paths = os.environ["PATH"].split(":")
-    else:
-        paths = []
-        if os.environ.has_key("HOME"):
-            paths += [os.environ["HOME"] + "/bin"]
-        paths += ["/usr/local/sbin", "/usr/local/bin", "/usr/sbin", "/usr/bin", "/sbin", "/bin"]
-
-    for path in paths:
-        bin_path = "%s/%s" % (path, binary)
-        if os.path.exists(bin_path):
-            return bin_path
-
-    print "External command '%s' not found, exiting." % binary
-    print "  (Please install '%s' on your host system)" % binary
-    sys.exit(1)
-
 def makedirs(dirname):
     """A version of os.makedirs() that doesn't throw an
     exception if the leaf directory already exists.

scripts/lib/wic/utils/partitionedfs.py

@@ -40,13 +40,13 @@ class Image:
     An Image is a container for a set of DiskImages and associated
     partitions.
     """
-    def __init__(self):
+    def __init__(self, native_sysroot=None):
         self.disks = {}
         self.partitions = []
-        self.parted = find_binary_path("parted")
         # Size of a sector used in calculations
         self.sector_size = SECTOR_SIZE
         self._partitions_layed_out = False
+        self.native_sysroot = native_sysroot
 
     def __add_disk(self, disk_name):
         """ Add a disk 'disk_name' to the internal list of disks. Note,
@@ -225,11 +225,12 @@ class Image:
     def __run_parted(self, args):
         """ Run parted with arguments specified in the 'args' list. """
 
-        args.insert(0, self.parted)
+        args.insert(0, "parted")
+        args = ' '.join(args)
         msger.debug(args)
 
-        rc, out = runner.runtool(args, catch = 3)
-        out = out.strip()
+        rc, out = exec_native_cmd(args, self.native_sysroot)
+
         if out:
             msger.debug('"parted" output: %s' % out)