From: Leonardo Augusto <leo...@gmail.com>
Python subprocess' shell=True defaults to /bin/sh[1][2], which
often refers to a POSIX-compliant shell. As the -e flag is
not defined in the POSIX standard[3], some shells may
interpret "-e" as the first argument to the echo command,
causing the rest of the command line to fail.
In this particular case, "echo -e 'cd {}'" is interpreted
as "-e cd {}", which causes the first line of the command
to fail, and causing cp to always place the source file
in the filesystem's root.
Replacing "echo -e" for a printf command makes this
more portable.
This issue only affects "wic cp" for ext* filesystems.
[1] https://docs.python.org/2/library/subprocess.html
[2] https://docs.python.org/3/library/subprocess.html
[3] http://pubs.opengroup.org/onlinepubs/9699919799
(From OE-Core rev: 9a5b703d4e60c3ccdf80b5289b8e6fc91133fcde)
Signed-off-by: Leonardo Augusto <leo...@gmail.com>
Signed-off-by: Richard Purdie <richard.pur...@linuxfoundation.org>
Signed-off-by: Armin Kuster <akuster...@gmail.com>
---
scripts/lib/wic/engine.py | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/scripts/lib/wic/engine.py b/scripts/lib/wic/engine.py
index 4eefc94..951bf30 100644
--- a/scripts/lib/wic/engine.py
+++ b/scripts/lib/wic/engine.py
@@ -331,7 +331,7 @@ class Disk:
def copy(self, src, pnum, path):
"""Copy partition image into wic image."""
if self.partitions[pnum].fstype.startswith('ext'):
- cmd = "echo -e 'cd {}\nwrite {} {}' | {} -w {}".\
+ cmd = "printf 'cd {}\nwrite {} {}' | {} -w {}".\
format(path, src, os.path.basename(src),
self.debugfs, self._get_part_image(pnum))
else: # fat
--
2.7.4
--
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