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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>
#
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",
"mkswqp": "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:
rc, out = runner.runtool(cmd_and_args, catch)
else:
rc, out = runner.runtool(args, catch)
out = out.strip()
msger.debug("__exec_cmd: output for %s (rc = %d): %s" % \
(cmd_and_args, rc, out))
return (rc, out)
def exec_cmd(cmd_and_args, as_shell=False, catch=3):
"""
Execute command, catching stderr, stdout
Exits if rc non-zero
"""
rc, out = __exec_cmd(cmd_and_args, as_shell, catch)
if rc != 0:
msger.error("exec_cmd: %s returned '%s' instead of 0" % (cmd_and_args, rc))
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)
rc, out = __exec_cmd(native_cmd_and_args, True, catch)
if rc == 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 rc != 0:
msger.error("exec_cmd: '%s' returned '%s' instead of 0" % \
(cmd_and_args, rc))
return (rc, out)
# kickstart doesn't support variable substution in commands, so this
# is our current simplistic scheme for supporting that
wks_vars = dict()
def get_wks_var(key):
return wks_vars[key]
def add_wks_var(key, val):
wks_vars[key] = val
BOOTDD_EXTRA_SPACE = 16384
_BITBAKE_VARS = defaultdict(dict)
def get_bitbake_var(var, image=None):
"""
Get bitbake variable value lazy way, i.e. run
'bitbake -e' only when variable is requested.
"""
if image not in _BITBAKE_VARS:
# Get bitbake -e output
cmd = "bitbake -e"
if image:
cmd += " %s" % image
log_level = msger.get_loglevel()
msger.set_loglevel('normal')
rc, lines = __exec_cmd(cmd)
msger.set_loglevel(log_level)
if rc:
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'):
if "=" not in line:
continue
try:
key, val = line.split("=")
except ValueError:
continue
key = key.strip()
val = val.strip()
if key.replace('_', '').isalnum():
_BITBAKE_VARS[image][key] = val.strip('"')
# Make first image a default set of variables
images = [key for key in _BITBAKE_VARS if key]
if len(images) == 1:
_BITBAKE_VARS[None] = _BITBAKE_VARS[image]
return _BITBAKE_VARS[image].get(var)
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 p in params:
if not p:
continue
if not '=' in p:
key = p
val = None
else:
key, val = p.split('=')
params_dict[key] = val
return params_dict
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