Hi, Thanks for replying. Actually, I just wanted to know what kernel config variables are needed to make tftp work in vanilla linux. I get the message "tftp: sendto: Network is unreachable". With another default config, I can use tftp on qemu machine but still the kernel image size is big so I tried to reduce the size and reduce the experiment cycle time. But now I know I can build my test platform driver into a kernel module I can do away with it. Maybe I'll just try this "finding minimal config for tftp " later. (I though because the shell itself is the busybox, maybe I could find where the program is loaded and set breakpoint in the tftp entrance or condition, but couldn't find where busybox was loaded.) Thank you. Chan Kim >-----Original Message----- >From: Richard <richard_siegfried@xxxxxxxxxxxx> >Sent: Friday, July 8, 2022 8:46 AM >To: kernelnewbies@xxxxxxxxxxxxxxxxx >Subject: Re: Can I debug busybox program running on a qemu virtual machine >using gdb? > >Hi, > >If the goal is only to understand tftp and it's not something hardware >dependend I would debug it on my normal desktop system/notebook. My distro >(debian) has a busybox package. It does not provide the symlinks to change >the ARGV[0] but you can create them manually and then debug locally as >usually with your prefered tool (emacs recommended :) ). > >If it has to be in quemu, I see no reason against it, the normal rules for >remote debugging apply. > >-- Richard Sailer > >On 07/07/2022 11:27, Chan Kim wrote: >> Hi all, >> >> I'm trying to track how tftp program runs when I run tftp provided by >> busybox on qemu virtual machine. >> I can debug the linux source but I cannot debug tftp (busybox) program. >> Can I debug busybox program using gdb in this case? >> Any hint or advice will be very appreciated. >> Thank you! >> >> Chan Kim >> >> >> >> >> >> _______________________________________________ >> Kernelnewbies mailing list >> Kernelnewbies@xxxxxxxxxxxxxxxxx >> https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies > >_______________________________________________ >Kernelnewbies mailing list >Kernelnewbies@xxxxxxxxxxxxxxxxx >https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies _______________________________________________ Kernelnewbies mailing list Kernelnewbies@xxxxxxxxxxxxxxxxx https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
