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We shouldn't destroy IPC objects of system users on logout.
http://lists.freedesktop.org/archives/systemd-devel/2014-April/018373.html
This introduces SYSTEM_UID_MAX defined to the maximum UID of system
users. This value is determined compile-time, either as configure switch
or from /etc/login.defs. (We don't read that file at runtime, since this
is really a choice for a system builder, not the end user.)
While we are at it we then also update journald to use SYSTEM_UID_MAX
when we decide whether to split out log data for a specific client.
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No functional change expected :)
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introduced in cafc7f91306ea17ace4a6c3d76d81c8780c87452
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... it turns out that the duplicates in our own catalog were not real
duplicates, but translations.
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- Negative/positive errno mixup caused duplicates not to be detected properly.
Now we get a warning about some duplicate entries in our own catalogs...
- Errors in update_catalog would be ignored, but they should not be.
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greedy_realloc() and greedy_realloc0() now store the allocated
size as the count, not bytes.
Replace GREEDY_REALLOC uses with GREEDY_REALLOC_T everywhere,
and then rename GREEDY_REALLOC_T to GREEDY_REALLOC. It is just
too error-prone to have two slightly different macros which do the
same thing.
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Found with scan-build
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safe_close_pair() is more like safe_close(), except that it handles
pairs of fds, and doesn't make and misleading allusion, as it works
similarly well for socketpairs() as for pipe()s...
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CLOCK_BOOTTIME_ALARM, too
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safe_close() automatically becomes a NOP when a negative fd is passed,
and returns -1 unconditionally. This makes it easy to write lines like
this:
fd = safe_close(fd);
Which will close an fd if it is open, and reset the fd variable
correctly.
By making use of this new scheme we can drop a > 200 lines of code that
was required to test for non-negative fds or to reset the closed fd
variable afterwards.
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It seems that resources are properly deallocated by MHD_destroy_response,
even if enqueuing the request fails.
Also replace a trivial printf with alloca and fixup log message
(it'll now be something like "Connection from CN=some.host.name",
which seems clear enough.)
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This chunk got lost in one of the rebases :(
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Now --listen-http=-3 --listen-https=-4 can be used to spawn a µhttpd
server on those two ports, in http and https modes respectively.
As before, --listen-http=3 --listen-https=4 will launch µhttpd servers
on ports 3 and 4.
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Most of the messages we send do not require a allocating and
freeing a buffer, to optimize this by using const strings.
Also, rename respond_error to mhd_respond*, since it is used
not only for errors.
Make use of information from printf to avoid one extra call to
strlen.
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The whole tool is made dependent on µhttpd availability. It should be
easy to make the µhttpd parts conditional, but since transfer over
HTTP seems to be the primary use case, currently this is not done.
Current implementation uses nested epoll loops: sd-event is used for
the external event loop, and µhttpd uses epoll in its own
loop. Unfortunately µhttpd does not expose enough information to add
the descriptors it uses to the external event loop. This means that
starvation of other events is possible, if one of the inner µhttpd
loops is constantly busy. This means that µhttpd servers should not
be mixed with other sources.
The TLS authentication parts haven't been really tested properly, and
should not be take too seriously.
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If --trust=ca.crt is used, only clients presenting certificates signed
by the ca will be allowed to proceed. No hostname matching is
performed, so any client wielding a signed certificate will be
authorized.
Error functions are moved from journal-gateway to microhttp-util and
made non-static, since now they are used in two source files.
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Prefix "gnutls: " is added. Some semi-random mapping of gnutls levels
to syslog levels is done, but since gnutls levels seem to be used
rather loosely, most end up as debug.
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A certificate authority certificate will be presented to clients,
causing them to present their client certificate, if it is signed by
this authority (default behaviour of most clients). No certificate
checking is actually performed.
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In preparation for use elsewhere.
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GCC optimizes strlen("string constant") to a constant, even with -O0.
Thus, replace patterns like sizeof("string constant")-1 with
strlen("string constant") where possible, for clarity. In particular,
for expressions intended to add up the lengths of components going into
a string, this often makes it clearer that the expression counts the
trailing '\0' exactly once, by putting the +1 for the '\0' at the end of
the expression, rather than hidden in a sizeof in the middle of the
expression.
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This will let journald forward logs as messages sent to all logged in
users (like wall).
Two options are added:
* ForwardToWall (default yes)
* MaxLevelWall (default emerg)
'ForwardToWall' is overridable by kernel command line option
'systemd.journald.forward_to_wall'.
This is used to emulate the traditional syslogd behaviour of sending
emergency messages to all logged in users.
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Bring some arrays that are used for DEFINE_STRING_TABLE_LOOKUP() in the
same order than the enums they reference.
Also, pass the corresponding _MAX value to the array initalizer where
appropriate.
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If we encounter an inconsistency in a file, let's just
ignore it. Otherwise, after previous patch, we would try,
and fail, to use this file in every invocation of sd_journal_next
or sd_journal_previous that happens afterwards.
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With a corrupted file, we can get in a situation where two entries
in the entry array point to the same object. Then journal_file_next_entry
will find the first one using generic_arrray_bisect, and try to move to
the second one, but since the address is the same, generic_array_get will
return the first one. journal_file_next_entry ends up in an infinite loop.
https://bugzilla.redhat.com/show_bug.cgi?id=1047039
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"level" is a bit too generic, let's clarify what kind of level we are
referring to here.
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Positional arguments only make sense with the default action.
For other actions, complain instead of ignoring them silently.
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As pointed-out by clang -Wunreachable-code.
No behaviour changes.
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https://bugzilla.redhat.com/show_bug.cgi?id=1047148
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for sizes
According to Wikipedia it is customary to specify hardware metrics and
transfer speeds to the basis 1000 (SI decimal), while software metrics
and physical volatile memory (RAM) sizes to the basis 1024 (IEC binary).
So far we specified everything in IEC, let's fix that and be more
true to what's otherwise customary. Since we don't want to parse "Mi"
instead of "M" we document each time what the context used is.
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Prior to 3.2, /proc/sys/kernel/hostname isn't a pollable file and
sd_event_add_io will return EPERM. Ignore this failure, since it isn't
critical to journald operation.
Reported and tested by user sraue on IRC.
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gcc (4.8.2, arm) does not understand that journal_file_append_field()
will always set 'fo' when it returns 0, so this warning is bogus.
Anyway, fix it by initialiting fo = NULL.
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gcc (4.8.2, arm) does not understand that next_beyond_location() will
always set 'p' when it returns > 0. Initialize p in order to fix this.
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first (or second)
Previously the returned object of constructor functions where sometimes
returned as last, sometimes as first and sometimes as second parameter.
Let's clean this up a bit. Here are the new rules:
1. The object the new object is derived from is put first, if there is any
2. The object we are creating will be returned in the next arguments
3. This is followed by any additional arguments
Rationale:
For functions that operate on an object we always put that object first.
Constructors should probably not be too different in this regard. Also,
if the additional parameters might want to use varargs which suggests to
put them last.
Note that this new scheme only applies to constructor functions, not to
all other functions. We do give a lot of freedom for those.
Note that this commit only changes the order of the new functions we
added, for old ones we accept the wrong order and leave it like that.
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sd_journal_get_cutoff_realtime_usec() on failure
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If -flto is used then gcc will generate a lot more warnings than before,
among them a number of use-without-initialization warnings. Most of them
without are false positives, but let's make them go away, because it
doesn't really matter.
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Resolve spotted issues related to missing or extraneous commas, dashes.
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