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* [U-Boot] [PATCH 1/2] patman: Convert byte arrays to strings
@ 2017-03-30 14:44 George McCollister
  2017-03-30 14:44 ` [U-Boot] [PATCH 2/2] dtoc: Decode val if it's a byte string George McCollister
  2017-04-01  4:23 ` [U-Boot] [PATCH 1/2] patman: Convert byte arrays to strings Simon Glass
  0 siblings, 2 replies; 6+ messages in thread
From: George McCollister @ 2017-03-30 14:44 UTC (permalink / raw)
  To: u-boot

os.read() returns a byte array in Python 3.5.2 and needs to be converted
into a string. Check if the returned value is an instance of bytes and
if it is decode it as a utf-8 string. If it is not a utf-8 encoded string
the decoding may fail with an exception.

Prior to this fix the comparisions check data == "" would fail when data
was b'' and would cause an infinite memory leaking loop. joins would
also fail with an exception below but due to the infinite loop it never
made it that far.

Signed-off-by: George McCollister <george.mccollister@gmail.com>
---
 tools/patman/cros_subprocess.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tools/patman/cros_subprocess.py b/tools/patman/cros_subprocess.py
index ebd4300dfd..7c76014340 100644
--- a/tools/patman/cros_subprocess.py
+++ b/tools/patman/cros_subprocess.py
@@ -190,6 +190,8 @@ class Popen(subprocess.Popen):
                 # We will get an error on read if the pty is closed
                 try:
                     data = os.read(self.stdout.fileno(), 1024)
+                    if isinstance(data, bytes):
+                        data = data.decode('utf-8')
                 except OSError:
                     pass
                 if data == "":
@@ -205,6 +207,8 @@ class Popen(subprocess.Popen):
                 # We will get an error on read if the pty is closed
                 try:
                     data = os.read(self.stderr.fileno(), 1024)
+                    if isinstance(data, bytes):
+                        data = data.decode('utf-8')
                 except OSError:
                     pass
                 if data == "":
-- 
2.11.0

^ permalink raw reply related	[flat|nested] 6+ messages in thread

end of thread, other threads:[~2017-04-13 21:16 UTC | newest]

Thread overview: 6+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2017-03-30 14:44 [U-Boot] [PATCH 1/2] patman: Convert byte arrays to strings George McCollister
2017-03-30 14:44 ` [U-Boot] [PATCH 2/2] dtoc: Decode val if it's a byte string George McCollister
2017-04-01  4:23   ` Simon Glass
2017-04-13 21:16     ` Simon Glass
2017-04-01  4:23 ` [U-Boot] [PATCH 1/2] patman: Convert byte arrays to strings Simon Glass
2017-04-13 21:16   ` Simon Glass

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