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Signed-off-by: Gergely Nagy <algernon@balabit.hu>
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Add high-precision timestamp to the JSON payload (unless disabled).
Signed-off-by: Gergely Nagy <algernon@balabit.hu>
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For documentation purposes, and for clarity, export the syslog()
wrappers under a sensible name.
Signed-off-by: Gergely Nagy <algernon@balabit.hu>
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We now cache the uid and gid upon openlog(), and add it to the
automatic fields unless discovery is disabled.
The caching can be turned off by passing either the LOG_CEE_NOCACHE or
the LOG_CEE_NOCACHE_UID flag to openlog(). The latter also disables
caching the gid.
Signed-off-by: Gergely Nagy <algernon@balabit.hu>
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Since we'd like to avoid doing useless work during logging, wrap
setlogmask() too, and save the mask set, so during _cee_vsyslog(), we
can bail out early, if our priority is not set in the mask.
Signed-off-by: Gergely Nagy <algernon@madhouse-project.org>
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Changed the API, so that we have cee_(v)syslog(), which is the
enhanced syslog API, that takes key-value pairs in addition to the
traditional message, and outputs CEE-JSON to syslog.
We also have (v)syslog() overrides, that do the same, just without the
extra key-value pairs.
Both of these add some extra stuff, via _cee_discover(): at the
moment, this is the facility, the priority and the pid.
We also override openlog(), that stores some info in thread-local
storage. That info is used by _cee_discover().
For future use, this patch also defines LOG_CEE_NODISCOVER and
LOG_CEE_NOCACHE. They're not used anywhere yet, though.
Signed-off-by: Gergely Nagy <algernon@madhouse-project.org>
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The formatting itself is now lifted out to _cee_vformat(), which
returns a const char *, and puts the JSON object into its first
(output) parameter.
We then export cee_format() and cee_vformat(), that use this, strdup
and return the result, and free the JSON object too.
cee_vsyslog() was changed to use _cee_vformat(), because it does not
need to strdup() the result.
Signed-off-by: Gergely Nagy <algernon@balabit.hu>
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