mmap bug in 2.2.13 (or in documentation)

Abramo Bagnara (abramo@alsa-project.org)
Wed, 29 Dec 1999 13:24:46 +0100

Cause the fall through in do_mmap (around mm/mmap.c:223) all kind of
file mmap are denied with EACCES if file is not open for reading.
This is contrary to mmap(2):

ERRORS
...
EACCES MAP_PRIVATE was asked, but fd is not open for read-
ing. Or MAP_SHARED was asked and PROT_WRITE is
set, fd is not open for writing.

As I'm unable to understand why a file opened WR_ONLY cannot be mmap'ed
PROT_WRITE, MAP_SHARED I deduce that a break is missing at line 222.

Another for me incomprehensible option is that mmap(2) is wrong... can
someone
clarify this?

-- 
Abramo Bagnara                       mailto:abramo@alsa-project.org


Opera Unica
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It sounds good!


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