[sane-devel] Running sane din docker

[m. allan noah]

I'm confused- you mention exposing usb device files to the container,
then you talk about saned. Are you scanning from a network attached
scanner, or USB? And for that matter- what scanner and what version of
sane-backends is this?

allan

On Sat, Jul 29, 2017 at 2:20 PM, Jan De Luyck <sub+sanedevel at kcore.org> wrote:
> Hello,
>
> I'm currently trying to get Sane to run inside a docker container.
> Reasons being that I can't modify the OS of the underlying machine, but
> I can play with docker containers.
>
> By sharing the /dev/bus/usb filesystem to the container, and mapping the
> necessary ports, I've gotten it to run (using runit to keep the services
> up and running). The scanner is detected, and I can start a remote scan
> - unfortunately it never completes, it fails shortly in the scan with a
> SIGPIPE error, and the client app (being scanimage or xsane) bombs out.
>
> The docker container is based on Debian Stable, I have dbus running
> inside it and ahavi is available.
>
> Running scanimage -T returns:
> $ scanimage -T
> scanimage: scanning image of size 638x877 pixels at 24 bits/pixel
> scanimage: acquiring RGB frame, 8 bits/sample
> scanimage: reading one scanline, 1914 bytes...  FAIL No data
> scanimage: reading one byte...          FAIL No data
> scanimage: stepped read, 2 bytes...     FAIL No data
> scanimage: stepped read, 4 bytes...     FAIL No data
> scanimage: stepped read, 8 bytes...     FAIL No data
> scanimage: stepped read, 16 bytes...    FAIL No data
> scanimage: stepped read, 32 bytes...    FAIL No data
> scanimage: stepped read, 64 bytes...    FAIL No data
> scanimage: stepped read, 128 bytes...   FAIL No data
> scanimage: stepped read, 256 bytes...   FAIL No data
> scanimage: stepped read, 512 bytes...   FAIL No data
> scanimage: stepped read, 1024 bytes...  FAIL No data
> scanimage: stepped read, 2048 bytes...  FAIL No data
> scanimage: stepped read, 2047 bytes...  FAIL No data
> scanimage: stepped read, 1023 bytes...  FAIL No data
> scanimage: stepped read, 511 bytes...   FAIL No data
> scanimage: stepped read, 255 bytes...   FAIL No data
> scanimage: stepped read, 127 bytes...   FAIL No data
> scanimage: stepped read, 63 bytes...    FAIL No data
> scanimage: stepped read, 31 bytes...    FAIL No data
> scanimage: stepped read, 15 bytes...    FAIL No data
> scanimage: stepped read, 7 bytes...     FAIL No data
> scanimage: stepped read, 3 bytes...     FAIL No data
> scanimage: received signal 13
> scanimage: trying to stop scanner
> Segmentation fault
>
> The last messages I get from saned -d128 are:
>
> [saned] do_scan: trying to write 8192 bytes to client
> [saned] quit: received signal 13
>
> Stracing saned gave me:
> 960  write(2, "[saned] ", 8)           = 8
> 1960  write(2, "do_scan: trying to read 8188 bytes from scanner\n", 48)
> = 48
> 1960  write(2, "[saned] ", 8)           = 8
> 1960  write(2, "do_scan: read 8188 bytes from scanner\n", 38) = 38
> 1960  select(135, [4], [134], NULL, {tv_sec=0, tv_usec=0}) = 1 (out
> [134], left {tv_sec=0, tv_usec=0})
> 1960  write(2, "[saned] ", 8)           = 8
> 1960  write(2, "do_scan: trying to write 8192 bytes to client\n", 46) =
> 46
> 1960  write(2, "do_scan: trying to read 8188 bytes from scanner\n", 48)
> = 48
> 1960  write(2, "[saned] ", 8)           = 8
> 1960  write(2, "do_scan: read 8188 bytes from scanner\n", 38) = 38
> 1960  select(135, [4], [134], NULL, {tv_sec=0, tv_usec=0}) = 1 (out
> [134], left {tv_sec=0, tv_usec=0})
> 1960  write(2, "[saned] ", 8)           = 8
> 1960  write(2, "do_scan: trying to write 8192 bytes to client\n", 46) =
> 46
> 1960  select(135, [4], [134], NULL, {tv_sec=0, tv_usec=0}) = 1 (out
> [134], left {tv_sec=0, tv_usec=0})
> 1960  write(2, "[saned] ", 8)           = 8
> 1960  write(2, "do_scan: trying to write 8192 bytes to client\n", 46) =
> 46
> 1960  write(134,
> "\0\0\37\374\372\370\373\372\370\374\373\371\374\373\371\374\373\371\374\373\371\374\373\371\371\370\3
> 66\372\371\367\372\371\367\373\372\370\373\372\370\372\371\367\372\371\367\371\370\366\372\372\370\372\372\370\372\372\
> 370\372\372\370\372\372\370\372\372\370\372\372\370\372\372\370\372\372\370\372\372\370\372\372\370\372\372\370\372\372
> "..., 8192) = -1 EPIPE (Broken pipe)
> 1960  --- SIGPIPE {si_signo=SIGPIPE, si_code=SI_USER, si_pid=1960,
> si_uid=0} ---
> 1960  write(2, "[saned] ", 8)           = 8
> 1960  write(2, "quit: received signal 13\n", 25) = 25
>
> Does anyone here have any idea how I could figure out what's going wrong
> here? The first 8192 bytes of data get send, the second always fails.
>
> Thanks in advance for any answers,
>
> Jan
>
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