[Qemu-devel] [Bug 1748612] Re: qemu-user option -strace -D <file> doesn't work

[mou]

If this is not for strace, then why when I launch qemu as subprocess (example: 
from a python script)
with option -strace -D <file> it creates a log file called <file>-strace? Seems 
like a bug to me.
Anyway, I understand you don't want to break the current behavior, is there any 
chance this gets added in the near future?

-- 
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1748612

Title:
  qemu-user option -strace -D <file> doesn't work

Status in QEMU:
  New

Bug description:
  I have been trying to access qemu -strace output from a script
  The main problem was it was on stderr, the strace output was merged with my 
program's stderr output.
  Then I tried to use the -D option, to log the output to a file.
  This didn't work even if the log file was created, but it was empty.

  I have looked at the source code and found the print function was not
  qemu_log with -strace but gemu_log (to be clear it was GEMU NOT QEMU)

  
  I have then replaced all gemu_log by qemu_log removed declaration of gemu_log 
and recompiled, it seems to works just fine right now.

  removed declaration here and here:
  https://github.com/qemu/qemu/blob/master/linux-user/main.c#L108
  https://github.com/qemu/qemu/blob/master/linux-user/qemu.h#L203

To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1748612/+subscriptions