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git-subtree-dir: yocto-poky
git-subtree-split: ea562de57590c966cd5a75fda8defecd397e6436
diff --git a/scripts/lib/wic/utils/oe/misc.py b/scripts/lib/wic/utils/oe/misc.py
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+# ex:ts=4:sw=4:sts=4:et
+# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
+#
+# Copyright (c) 2013, Intel Corporation.
+# All rights reserved.
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License version 2 as
+# published by the Free Software Foundation.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program; if not, write to the Free Software Foundation, Inc.,
+# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+#
+# DESCRIPTION
+# This module provides a place to collect various wic-related utils
+# for the OpenEmbedded Image Tools.
+#
+# AUTHORS
+# Tom Zanussi <tom.zanussi (at] linux.intel.com>
+#
+"""Miscellaneous functions."""
+
+import os
+from collections import defaultdict
+
+from wic import msger
+from wic.utils import runner
+
+# executable -> recipe pairs for exec_native_cmd
+NATIVE_RECIPES = {"mcopy": "mtools",
+ "mkdosfs": "dosfstools",
+ "mkfs.btrfs": "btrfs-tools",
+ "mkfs.ext2": "e2fsprogs",
+ "mkfs.ext3": "e2fsprogs",
+ "mkfs.ext4": "e2fsprogs",
+ "mkfs.vfat": "dosfstools",
+ "mksquashfs": "squashfs-tools",
+ "mkswap": "util-linux",
+ "parted": "parted",
+ "sgdisk": "gptfdisk",
+ "syslinux": "syslinux"
+ }
+
+def _exec_cmd(cmd_and_args, as_shell=False, catch=3):
+ """
+ Execute command, catching stderr, stdout
+
+ Need to execute as_shell if the command uses wildcards
+ """
+ msger.debug("_exec_cmd: %s" % cmd_and_args)
+ args = cmd_and_args.split()
+ msger.debug(args)
+
+ if as_shell:
+ ret, out = runner.runtool(cmd_and_args, catch)
+ else:
+ ret, out = runner.runtool(args, catch)
+ out = out.strip()
+ msger.debug("_exec_cmd: output for %s (rc = %d): %s" % \
+ (cmd_and_args, ret, out))
+
+ return (ret, out)
+
+
+def exec_cmd(cmd_and_args, as_shell=False, catch=3):
+ """
+ Execute command, catching stderr, stdout
+
+ Exits if rc non-zero
+ """
+ ret, out = _exec_cmd(cmd_and_args, as_shell, catch)
+
+ if ret != 0:
+ msger.error("exec_cmd: %s returned '%s' instead of 0" % \
+ (cmd_and_args, ret))
+
+ return out
+
+
+def exec_native_cmd(cmd_and_args, native_sysroot, catch=3):
+ """
+ Execute native command, catching stderr, stdout
+
+ Need to execute as_shell if the command uses wildcards
+
+ Always need to execute native commands as_shell
+ """
+ native_paths = \
+ "export PATH=%s/sbin:%s/usr/sbin:%s/usr/bin" % \
+ (native_sysroot, native_sysroot, native_sysroot)
+ native_cmd_and_args = "%s;%s" % (native_paths, cmd_and_args)
+ msger.debug("exec_native_cmd: %s" % cmd_and_args)
+
+ args = cmd_and_args.split()
+ msger.debug(args)
+
+ ret, out = _exec_cmd(native_cmd_and_args, True, catch)
+
+ if ret == 127: # shell command-not-found
+ prog = args[0]
+ msg = "A native program %s required to build the image "\
+ "was not found (see details above).\n\n" % prog
+ recipe = NATIVE_RECIPES.get(prog)
+ if recipe:
+ msg += "Please bake it with 'bitbake %s-native' "\
+ "and try again.\n" % recipe
+ else:
+ msg += "Wic failed to find a recipe to build native %s. Please "\
+ "file a bug against wic.\n" % prog
+ msger.error(msg)
+ if out:
+ msger.debug('"%s" output: %s' % (args[0], out))
+
+ if ret != 0:
+ msger.error("exec_cmd: '%s' returned '%s' instead of 0" % \
+ (cmd_and_args, ret))
+
+ return ret, out
+
+BOOTDD_EXTRA_SPACE = 16384
+
+class BitbakeVars(defaultdict):
+ """
+ Container for Bitbake variables.
+ """
+ def __init__(self):
+ defaultdict.__init__(self, dict)
+
+ # default_image and vars_dir attributes should be set from outside
+ self.default_image = None
+ self.vars_dir = None
+
+ def _parse_line(self, line, image):
+ """
+ Parse one line from bitbake -e output or from .env file.
+ Put result key-value pair into the storage.
+ """
+ if "=" not in line:
+ return
+ try:
+ key, val = line.split("=")
+ except ValueError:
+ return
+ key = key.strip()
+ val = val.strip()
+ if key.replace('_', '').isalnum():
+ self[image][key] = val.strip('"')
+
+ def get_var(self, var, image=None):
+ """
+ Get bitbake variable from 'bitbake -e' output or from .env file.
+ This is a lazy method, i.e. it runs bitbake or parses file only when
+ only when variable is requested. It also caches results.
+ """
+ if not image:
+ image = self.default_image
+
+ if image not in self:
+ if image and self.vars_dir:
+ fname = os.path.join(self.vars_dir, image + '.env')
+ if os.path.isfile(fname):
+ # parse .env file
+ with open(fname) as varsfile:
+ for line in varsfile:
+ self._parse_line(line, image)
+ else:
+ print "Couldn't get bitbake variable from %s." % fname
+ print "File %s doesn't exist." % fname
+ return
+ else:
+ # Get bitbake -e output
+ cmd = "bitbake -e"
+ if image:
+ cmd += " %s" % image
+
+ log_level = msger.get_loglevel()
+ msger.set_loglevel('normal')
+ ret, lines = _exec_cmd(cmd)
+ msger.set_loglevel(log_level)
+
+ if ret:
+ print "Couldn't get '%s' output." % cmd
+ print "Bitbake failed with error:\n%s\n" % lines
+ return
+
+ # Parse bitbake -e output
+ for line in lines.split('\n'):
+ self._parse_line(line, image)
+
+ # Make first image a default set of variables
+ images = [key for key in self if key]
+ if len(images) == 1:
+ self[None] = self[image]
+
+ return self[image].get(var)
+
+# Create BB_VARS singleton
+BB_VARS = BitbakeVars()
+
+def get_bitbake_var(var, image=None):
+ """
+ Provide old get_bitbake_var API by wrapping
+ get_var method of BB_VARS singleton.
+ """
+ return BB_VARS.get_var(var, image)
+
+def parse_sourceparams(sourceparams):
+ """
+ Split sourceparams string of the form key1=val1[,key2=val2,...]
+ into a dict. Also accepts valueless keys i.e. without =.
+
+ Returns dict of param key/val pairs (note that val may be None).
+ """
+ params_dict = {}
+
+ params = sourceparams.split(',')
+ if params:
+ for par in params:
+ if not par:
+ continue
+ if not '=' in par:
+ key = par
+ val = None
+ else:
+ key, val = par.split('=')
+ params_dict[key] = val
+
+ return params_dict