From: Lothar Waßmann LW@KARO-electronics.de

When the U-Boot base directory happens to have the same name as the branch that buildman is directed to use via the '-b' option and no output directory is specified with '-o', buildman happily starts removing the whole U-Boot sources eventually only stopped with the error message:

OSError: [Errno 20] Not a directory: '../<branch-name>/boards.cfg

Add a check to avoid this and also deal with the case where '-o' points to the source directory, or any subdirectory of it.

Finally, tidy up the confusing logic for removing the old tree when using -b. This is only done when building a branch.

Signed-off-by: Lothar Waßmann LW@KARO-electronics.de Signed-off-by: Simon Glass sjg@chromium.org ---

Changes in v3: - Avoid splitting the error string in CheckOutputDir()

Changes in v2: - Updated to check directories on start-up as per comments on v1 patch - Added a test - Expanded check to handle subdirectories

tools/buildman/builderthread.py | 4 ++++ tools/buildman/control.py | 28 +++++++++++++++++++++++++--- tools/buildman/func_test.py | 9 +++++++++ 3 files changed, 38 insertions(+), 3 deletions(-)

diff --git a/tools/buildman/builderthread.py b/tools/buildman/builderthread.py index 9ac101a5a4..16a3fa452d 100644 --- a/tools/buildman/builderthread.py +++ b/tools/buildman/builderthread.py @@ -7,6 +7,7 @@ import errno import glob import os import shutil +import sys import threading

import command @@ -27,6 +28,9 @@ def Mkdir(dirname, parents = False): os.mkdir(dirname) except OSError as err: if err.errno == errno.EEXIST: + if os.path.realpath('.') == os.path.realpath(dirname): + print "Cannot create the current working directory '%s'!" % dirname + sys.exit(1) pass else: raise diff --git a/tools/buildman/control.py b/tools/buildman/control.py index 3cac9f7cf6..e2037c3f61 100644 --- a/tools/buildman/control.py +++ b/tools/buildman/control.py @@ -81,6 +81,28 @@ def ShowActions(series, why_selected, boards_selected, builder, options): print ('Total boards to build for each commit: %d\n' % len(why_selected['all']))

+def CheckOutputDir(output_dir): + """Make sure that the output directory is not within the current directory + + If we try to use an output directory which is within the current directory + (which is assumed to hold the U-Boot source) we may end up deleting the + U-Boot source code. Detect this and print an error in this case. + + Args: + output_dir: Output directory path to check + """ + path = os.path.realpath(output_dir) + cwd_path = os.path.realpath('.') + while True: + if os.path.realpath(path) == cwd_path: + Print("Cannot use output directory '%s' since it is within the current directtory '%s'" % + (path, cwd_path)) + sys.exit(1) + parent = os.path.dirname(path) + if parent == path: + break + path = parent + def DoBuildman(options, args, toolchains=None, make_func=None, boards=None, clean_dir=False): """The main control code for buildman @@ -252,9 +274,9 @@ def DoBuildman(options, args, toolchains=None, make_func=None, boards=None, # output directory itself rather than any subdirectory. if not options.no_subdirs: output_dir = os.path.join(options.output_dir, dirname) - if (clean_dir and output_dir != options.output_dir and - os.path.exists(output_dir)): - shutil.rmtree(output_dir) + if clean_dir and os.path.exists(output_dir): + shutil.rmtree(output_dir) + CheckOutputDir(output_dir) builder = Builder(toolchains, output_dir, options.git_dir, options.threads, options.jobs, gnu_make=gnu_make, checkout=True, show_unknown=options.show_unknown, step=options.step, diff --git a/tools/buildman/func_test.py b/tools/buildman/func_test.py index eec0f9bd37..4df1679842 100644 --- a/tools/buildman/func_test.py +++ b/tools/buildman/func_test.py @@ -521,3 +521,12 @@ class TestFunctional(unittest.TestCase): self._RunControl('-b', self._test_branch, clean_dir=False) self.assertEqual(self._builder.count, self._total_builds) self.assertEqual(self._builder.fail, 0) + + def testBadOutputDir(self): + """Test building with an output dir the same as out current dir""" + self._test_branch = '/__dev/__testbranch' + with self.assertRaises(SystemExit): + self._RunControl('-b', self._test_branch, '-o', os.getcwd()) + with self.assertRaises(SystemExit): + self._RunControl('-b', self._test_branch, '-o', + os.path.join(os.getcwd(), 'test'))