coredump: fix dumping through pipes

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The offset in the core file used to be tracked with ->written field of
the coredump_params structure. The field was retired in favour of
file->f_pos.

However, ->f_pos is not maintained for pipes which leads to breakage.

Restore explicit tracking of the offset in coredump_params. Introduce
->pos field for this purpose since ->written was already reused.

Fixes: a008393951 ("get rid of coredump_params->written").

Reported-by: Zbigniew Jędrzejewski-Szmek <zbyszek@in.waw.pl>
Signed-off-by: Mateusz Guzik <mguzik@redhat.com>
Reviewed-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

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Mateusz Guzik 2016-06-05 23:14:14 +02:00 • committed by Al Viro

parent a01e718f72

commit 1607f09c22

5 changed files with 7 additions and 4 deletions

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arch/powerpc/platforms/cell/spufs/coredump.c

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