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Signed-off-by: Karel Zak <kzak@redhat.com>
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Signed-off-by: Karel Zak <kzak@redhat.com>
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The mcookie should reuse existing code, and there is definitely no need
to prefer /dev/random for this utility. See reference for explanation
about later statement.
References: http://www.2uo.de/myths-about-urandom/
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
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This reverts commit 6126f7a53c57485a9a29ddd772765695f23c92e6
and fixes the double open and leaking descriptor in a different way,
that is by using newly introduced function 'have_random_source()'
to check whether good random source is available while deciding
which uuid type to generate (random/time).
This is better than calling random_get_fd() twice, passing the file
descriptor down the stack and reusing it in next call to
random_get_fd().
Signed-off-by: Petr Uzel <petr.uzel@suse.cz>
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We are opening /dev/urandom twice in uuid_generate(): first to check if
the file is available and then later __uuid_generate_random() again to
actually get the random data. Moreover, descriptor from the first open
is leaking.
Fix by passign the descriptor down the stack and reusing it there.
References: http://marc.info/?l=util-linux-ng&m=133406051131131&w=2
Signed-off-by: Petr Uzel <petr.uzel@suse.cz>
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Add a random number(s) generator specific file. The intial functions are based
on what libuuid provide. I did some modifications like avoid WIN32 checks - this
is util-LINUX.
[kzak@redhat.com: - move jrand_seed to lib/randutils.c
- use TLS for jrand_seed (like original code from libuuid)
- use size_t for buffer sizes
- add close() to random_get_bytes]
Signed-off-by: Davidlohr Bueso <dave@gnu.org>
Signed-off-by: Karel Zak <kzak@redhat.com>
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