[uml-devel] Re: Bug#260111: user-mode-linux: upgrade hangs at "NET4: Linux TCP/IP 1.0 for NET4.0 "

[Allen Chan <alydar@users.sourceforge.net>]

FYI... The same problem occurs in the 2.6.7-1um kernel after applying 
the remove-user-code patch from the "Current patches" site.  Except 
this time, instead of hanging, the guest kernel simply exits without 
warning.  The last output lines before exiting were:

...... [snipped] ......
Initializing stdio console driver
kjournald starting.  Commit interval 5 seconds

While compiling chan_kern.c, the following warnings were issued:

  CC      arch/um/drivers/chan_kern.o
arch/um/drivers/chan_kern.c: In function `generic_console_write':
arch/um/drivers/chan_kern.c:121: warning: implicit declaration of 
function `isatty'
arch/um/drivers/chan_kern.c:122: warning: implicit declaration of 
function `tcgetattr'
arch/um/drivers/chan_kern.c:125: warning: implicit declaration of 
function `tcsetattr'
arch/um/drivers/chan_kern.c: At top level:
arch/um/drivers/chan_kern.c:79: warning: `not_configged_ops' defined 
but not used

While isatty() is in <unistd.h> and tcgetattr() and tcsetattr() are in 
<termios.h> in /usr/include, there does not appear to exist 
equivalent kernel header files that will make those warnings go away 
for chan_kern.c.  Do these functions have to be implemented 
differently if placed at the kernel level?

On Friday 30 July 2004 02:49 pm, Jeff Dike wrote:
> Yeah, this definitely needs more investigation.



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