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1# ex:ts=4:sw=4:sts=4:et
2# -*- tab-width: 4; c-basic-offset: 4; indent-tabs-mode: nil -*-
3#
4# Copyright (c) 2013, Intel Corporation.
5# All rights reserved.
6#
7# This program is free software; you can redistribute it and/or modify
8# it under the terms of the GNU General Public License version 2 as
9# published by the Free Software Foundation.
10#
11# This program is distributed in the hope that it will be useful,
12# but WITHOUT ANY WARRANTY; without even the implied warranty of
13# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14# GNU General Public License for more details.
15#
16# You should have received a copy of the GNU General Public License along
17# with this program; if not, write to the Free Software Foundation, Inc.,
18# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
19#
20# DESCRIPTION
21# This module provides a place to collect various wic-related utils
22# for the OpenEmbedded Image Tools.
23#
24# AUTHORS
25# Tom Zanussi <tom.zanussi (at] linux.intel.com>
26#
27
28from wic import msger
29from wic.utils import runner
30
31def __exec_cmd(cmd_and_args, as_shell = False, catch = 3):
32 """
33 Execute command, catching stderr, stdout
34
35 Need to execute as_shell if the command uses wildcards
36 """
37 msger.debug("__exec_cmd: %s" % cmd_and_args)
38 args = cmd_and_args.split()
39 msger.debug(args)
40
41 if (as_shell):
42 rc, out = runner.runtool(cmd_and_args, catch)
43 else:
44 rc, out = runner.runtool(args, catch)
45 out = out.strip()
46 msger.debug("__exec_cmd: output for %s (rc = %d): %s" % \
47 (cmd_and_args, rc, out))
48
49 return (rc, out)
50
51
52def exec_cmd(cmd_and_args, as_shell = False, catch = 3):
53 """
54 Execute command, catching stderr, stdout
55
56 Exits if rc non-zero
57 """
58 rc, out = __exec_cmd(cmd_and_args, as_shell, catch)
59
60 if rc != 0:
61 msger.error("exec_cmd: %s returned '%s' instead of 0" % (cmd_and_args, rc))
62
63 return out
64
65
66def exec_cmd_quiet(cmd_and_args, as_shell = False):
67 """
68 Execute command, catching nothing in the output
69
70 Exits if rc non-zero
71 """
72 return exec_cmd(cmd_and_args, as_shell, 0)
73
74
75def exec_native_cmd(cmd_and_args, native_sysroot, catch = 3):
76 """
77 Execute native command, catching stderr, stdout
78
79 Need to execute as_shell if the command uses wildcards
80
81 Always need to execute native commands as_shell
82 """
83 native_paths = \
84 "export PATH=%s/sbin:%s/usr/sbin:%s/usr/bin:$PATH" % \
85 (native_sysroot, native_sysroot, native_sysroot)
86 native_cmd_and_args = "%s;%s" % (native_paths, cmd_and_args)
87 msger.debug("exec_native_cmd: %s" % cmd_and_args)
88
89 args = cmd_and_args.split()
90 msger.debug(args)
91
92 rc, out = __exec_cmd(native_cmd_and_args, True, catch)
93
94 if rc == 127: # shell command-not-found
95 msger.error("A native (host) program required to build the image "
96 "was not found (see details above). Please make sure "
97 "it's installed and try again.")
98
99 return (rc, out)
100
101
102def exec_native_cmd_quiet(cmd_and_args, native_sysroot):
103 """
104 Execute native command, catching nothing in the output
105
106 Need to execute as_shell if the command uses wildcards
107
108 Always need to execute native commands as_shell
109 """
110 return exec_native_cmd(cmd_and_args, native_sysroot, 0)
111
112
113# kickstart doesn't support variable substution in commands, so this
114# is our current simplistic scheme for supporting that
115
116wks_vars = dict()
117
118def get_wks_var(key):
119 return wks_vars[key]
120
121def add_wks_var(key, val):
122 wks_vars[key] = val
123
124BOOTDD_EXTRA_SPACE = 16384
125IMAGE_EXTRA_SPACE = 10240
126
127__bitbake_env_lines = ""
128
129def set_bitbake_env_lines(bitbake_env_lines):
130 global __bitbake_env_lines
131 __bitbake_env_lines = bitbake_env_lines
132
133def get_bitbake_env_lines():
134 return __bitbake_env_lines
135
136def find_bitbake_env_lines(image_name):
137 """
138 If image_name is empty, plugins might still be able to use the
139 environment, so set it regardless.
140 """
141 if image_name:
142 bitbake_env_cmd = "bitbake -e %s" % image_name
143 else:
144 bitbake_env_cmd = "bitbake -e"
145 rc, bitbake_env_lines = __exec_cmd(bitbake_env_cmd)
146 if rc != 0:
147 print "Couldn't get '%s' output." % bitbake_env_cmd
148 return None
149
150 return bitbake_env_lines
151
152def find_artifact(bitbake_env_lines, variable):
153 """
154 Gather the build artifact for the current image (the image_name
155 e.g. core-image-minimal) for the current MACHINE set in local.conf
156 """
157 retval = ""
158
159 for line in bitbake_env_lines.split('\n'):
160 if (get_line_val(line, variable)):
161 retval = get_line_val(line, variable)
162 break
163
164 return retval
165
166def get_line_val(line, key):
167 """
168 Extract the value from the VAR="val" string
169 """
170 if line.startswith(key + "="):
171 stripped_line = line.split('=')[1]
172 stripped_line = stripped_line.replace('\"', '')
173 return stripped_line
174 return None
175
176def get_bitbake_var(key):
177 for line in __bitbake_env_lines.split('\n'):
178 if (get_line_val(line, key)):
179 val = get_line_val(line, key)
180 return val
181 return None