[FFmpeg-devel] [PATCH] lavf: add subfile protocol.

[Nicolas George]

Le nonidi 9 ventôse, an CCXXII, Lukasz Marek a écrit :
> In file protocol lseek is used. If you pass SEEK_SET and n as new
> pos it always returns n and errno = 0. Even when seeking beyond end
> of the file or before beginning.  When you look at code file.c it
> will return 0 in case seeking to position before beginning.

I think you read the code wrong. In the file protocol, as you say, lseek is
used, and it returns whatever lseek returns. After your first mail, I
checked in the specs, and I just re-checked by experiment: both confirm that
seeking below 0 is not legal and just fails with EINVAL.

Seeking past the end of the file is legal, although useless for reading.

I therefore believe this part of the patch is fine.

Regards,

-- 
  Nicolas George
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