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#!/usr/bin/env python
# Copyright (c) 2012 Wind River Systems, Inc.
#
# 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
import os
import sys
import optparse
import re
import subprocess
import shutil
pkg_cur_dirs = {}
obsolete_dirs = []
parser = None
def err_quit(msg):
print msg
parser.print_usage()
sys.exit(1)
def parse_version(verstr):
elems = verstr.split(':')
epoch = elems[0]
if len(epoch) == 0:
return elems[1]
else:
return epoch + '_' + elems[1]
def run_command(cmd):
pipe = subprocess.Popen(cmd, stdout=subprocess.PIPE, shell=True)
output = pipe.communicate()[0]
if pipe.returncode != 0:
print "Execute command '%s' failed." % cmd
sys.exit(1)
return output
def get_cur_arch_dirs(workdir, arch_dirs):
pattern = workdir + '/(.*?)/'
# select thest 5 packages to get the dirs of current arch
pkgs = ['hicolor-icon-theme', 'base-files', 'acl-native', 'binutils-crosssdk', 'nativesdk-autoconf']
for pkg in pkgs:
cmd = "bitbake -e " + pkg + " | grep ^IMAGE_ROOTFS="
output = run_command(cmd)
output = output.split('"')[1]
m = re.match(pattern, output)
arch_dirs.append(m.group(1))
def main():
global parser
parser = optparse.OptionParser(
usage = """%prog
%prog removes the obsolete packages' build directories in WORKDIR.
This script must be ran under BUILDDIR after source file \"oe-init-build-env\".
Any file or directory under WORKDIR which is not created by Yocto
will be deleted. Be CAUTIOUS.""")
options, args = parser.parse_args(sys.argv)
builddir = run_command('echo $BUILDDIR').strip()
if len(builddir) == 0:
err_quit("Please source file \"oe-init-build-env\" first.\n")
if os.getcwd() != builddir:
err_quit("Please run %s under: %s\n" % (os.path.basename(args[0]), builddir))
print 'Updating bitbake caches...'
cmd = "bitbake -s"
output = run_command(cmd)
output = output.split('\n')
index = 0
while len(output[index]) > 0:
index += 1
alllines = output[index+1:]
for line in alllines:
# empty again means end of the versions output
if len(line) == 0:
break
line = line.strip()
line = re.sub('\s+', ' ', line)
elems = line.split(' ')
if len(elems) == 2:
version = parse_version(elems[1])
else:
version = parse_version(elems[2])
pkg_cur_dirs[elems[0]] = version
cmd = "bitbake -e"
output = run_command(cmd)
tmpdir = None
image_rootfs = None
output = output.split('\n')
for line in output:
if tmpdir and image_rootfs:
break
if not tmpdir:
m = re.match('TMPDIR="(.*)"', line)
if m:
tmpdir = m.group(1)
if not image_rootfs:
m = re.match('IMAGE_ROOTFS="(.*)"', line)
if m:
image_rootfs = m.group(1)
# won't fail just in case
if not tmpdir or not image_rootfs:
print "Can't get TMPDIR or IMAGE_ROOTFS."
return 1
pattern = tmpdir + '/(.*?)/(.*?)/'
m = re.match(pattern, image_rootfs)
if not m:
print "Can't get WORKDIR."
return 1
workdir = os.path.join(tmpdir, m.group(1))
# we only deal the dirs of current arch, total numbers of dirs are 6
cur_arch_dirs = [m.group(2)]
get_cur_arch_dirs(workdir, cur_arch_dirs)
for workroot, dirs, files in os.walk(workdir):
# For the files, they should NOT exist in WORKDIR. Remove them.
for f in files:
obsolete_dirs.append(os.path.join(workroot, f))
for d in dirs:
if d not in cur_arch_dirs:
continue
for pkgroot, pkgdirs, filenames in os.walk(os.path.join(workroot, d)):
for f in filenames:
obsolete_dirs.append(os.path.join(pkgroot, f))
for pkgdir in sorted(pkgdirs):
if pkgdir not in pkg_cur_dirs:
obsolete_dirs.append(os.path.join(pkgroot, pkgdir))
else:
for verroot, verdirs, verfiles in os.walk(os.path.join(pkgroot, pkgdir)):
for f in verfiles:
obsolete_dirs.append(os.path.join(pkgroot, f))
for v in sorted(verdirs):
if v not in pkg_cur_dirs[pkgdir]:
obsolete_dirs.append(os.path.join(pkgroot, pkgdir, v))
break
# just process the top dir of every package under tmp/work/*/,
# then jump out of the above os.walk()
break
# it is convenient to use os.walk() to get dirs and files at same time
# both of them have been dealed in the loop, so jump out
break
for d in obsolete_dirs:
print "Deleting %s" % d
shutil.rmtree(d, True)
if len(obsolete_dirs):
print '\nTotal %d items.' % len(obsolete_dirs)
else:
print '\nNo obsolete directory found under %s.' % workdir
return 0
if __name__ == '__main__':
try:
ret = main()
except Exception:
ret = 2
import traceback
traceback.print_exc(3)
sys.exit(ret)
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