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Moved some tests around between test_umberlog and
test_umberlog_preload, so only those tests remain in
test_umberlog_preload that do test something that the LD_PRELOAD lib
variant provides.
Also added a comment above each test to quickly clarify what they're
meant to test.
Signed-off-by: Gergely Nagy <algernon@balabit.hu>
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Based on a suggestion by Miloslav Trmač <mitr@redhat.com>, rename
LOG_UL_NODISCOVER to LOG_UL_NOIMPLICIT, and clarify the documentation
slightly.
Signed-off-by: Gergely Nagy <algernon@balabit.hu>
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When compiled with --disable-discovery, the LD_PRELOAD variant will
have automatic field discovery disabled. This does not affect the
linkable library, which always has them enabled by default.
Signed-off-by: Gergely Nagy <algernon@balabit.hu>
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Instead of piggy-backing on ul_openlog(), and accepting new flags at
openlog()-time, use a separate function, ul_set_log_flags() to achieve
the same.
This way, anyone who wants to flip any of the new flags, will have to
use ul_set_log_flags(), as ul_openlog() ignores them from now on.
This is based on work done by Miloslav Trmač <mitr@redhat.com>, and is
both an API and an ABI breakage.
Signed-off-by: Gergely Nagy <algernon@balabit.hu>
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In order to satisfy the desire of using libumberlog, specifically
ul_format(), without having to worry about syslog() & friends being
overridden, split the library into two parts:
A linkable library, which provides the new API, but does not override
the legacy syslog() functions; and a new, LD_PRELOAD-able part, which
does override the old ones.
Signed-off-by: Gergely Nagy <algernon@balabit.hu>
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