[Xfce-bugs] [Bug 15972] Segfault when un/mounting a device and tree view active

[bugzilla-daemon at xfce.org]

https://bugzilla.xfce.org/show_bug.cgi?id=15972

--- Comment #7 from fuank <greob at yahoo.com.sg> ---
Yes, sorry "backing file" was meant to be "fake_storage_file".


> Disk /fake_storage_file: 64 MiB, 67108864 bytes, 131072 sectors
> Units: sectors of 1 * 512 = 512 bytes
> Sector size (logical/physical): 512 bytes / 512 bytes
> I/O size (minimum/optimal): 512 bytes / 512 bytes
> Disklabel type: dos
> Disk identifier: 0xdbe8c6ec
> 
> Device                             Boot Start    End Sectors Size Id Type
> /fake_storage_filep1       2048 131071  129024  63M 83 Linux


The sector size is 512, but fdisk should also report the starting sector of the
"partition/file" in the "Start" column, in most cases it should be 2048, so
512*2048=1048516 which is the starting byte we give to losetup. 

More info there:
https://linux-sunxi.org/USB_Gadget/Mass_storage
https://unix.stackexchange.com/questions/373569/emulating-usb-device-with-a-file-using-g-mass-storage-udc-core-couldnt-find

Be wary that you need to remove the kernel module before suspending your
computer, or you may end up having the fake usb device blocking the entire
system, requiring a hard reboot! 

Sorry for the confusion. I haven't had time to look more into it yet but I sure
love learning more about gdb. ;)

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