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This adds the new library call sd_journal_open_container() and a new
"-M" switch to journalctl. Particular care is taken that journalctl's
"-b" switch resolves to the current boot ID of the container, not the
host.
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In the time it takes to process incoming log messages, the process we
are logging details for may exit. This means the cgroup data is no
longer available from '/proc'. Unfortunately, the way the code was
structured before, we never log _SYSTEMD_UNIT if we don't have this
cgroup information.
Add an else if case that allows the passed in unit_id to be logged even
if we couldn't capture cgroup information. This ensures a command like
`journalctl -u run-XXX` will return all log messages from a oneshot
process.
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Just as 'identifier' is strdup-ed and freed, we need to do the same for
unit_id.
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The only problem is that libgen.h #defines basename to point to it's
own broken implementation instead of the GNU one. This can be fixed
by #undefining basename.
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- Add space between if/for and the opening parentheses
- Place the opening brace on same line as the function (not for udev)
From the CODING_STYLE
Try to use this:
void foo() {
}
instead of this:
void foo()
{
}
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"syslog(3) and sd_journal_print() may largely be used interchangeably
functionality-wise" according to sd_journal_print(3). This socket
should be always available except in rare circumstatances, and we
don't random applications to fail on logging, so let's do what syslog
did. The alternative of forcing all callers to do error handling for
this rare case doesn't really have any benefits, since if they can't
log there isn't much they can do anyway.
https://bugzilla.redhat.com/show_bug.cgi?id=1023041
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let's just do a single fallocate() as far as possible, and don't
distuingish between allocated space and file size.
This way we can save a syscall for each append, which makes quite some
benefits.
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files into a single new one
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chain element
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This way we can do a quick restart limiting a bit how wildly we need to
jump around during the bisection process.
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Also for log_error() except where a specific error is specified
e.g. errno ? strerror(errno) : "Some user specified message"
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Pass on the line on which a section was decleared to the parsers, so they
can distinguish between multiple sections (if they chose to). Currently
no parsers take advantage of this, but a follow-up patch will do that
to distinguish
[Address]
Address=192.168.0.1/24
Label=one
[Address]
Address=192.168.0.2/24
Label=two
from
[Address]
Address=192.168.0.1/24
Label=one
Address=192.168.0.2/24
Label=two
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journald mimics the kernel here: timestamps will be printed if
/sys/module/printk/parameters/time contains "Y".
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everywhere
We want to emphasize bus connections as per-thread communication
primitives, hence introduce a concept of a per-thread default bus, and
make use of it everywhere.
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"make check-api-unused" informs us about code that is not used anymore
or that is exported but only used internally. Fix these all over the
place.
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Among other things this makes sure we always expose a --version command
and show it in the help texts.
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Instead of individually checking for containers in each user do this
once in a new call proc_cmdline() that read the file only if we are not
in a container.
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Suggested by David Wilkins <dwilkins@maths.tcd.ie> in
https://bugzilla.redhat.com/show_bug.cgi?id=967521:
> [Specific boot ID is a] bit of a palaver to obtain. I consulted the
> verbose dump of the journal to discover the _BOOT_ID for the
> timestamp, and then generated the journal dump for that boot using
> journalctl _BOOT_ID=foo -o short-monotonic.
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Among other things this also adds a few things necessary for the change:
- Considerably more powerful error returning APIs in libsystemd-bus
- Adapter for connecting an sd_bus to an sd_event
- As I reworked the PolicyKit logic to the new library I also made it
asynchronous, so that PolicyKit requests of one user cannot block out
another user anymore.
- We always use the macro names for common bus error. That way it is
harder to mistype them since the compiler will notice
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Always use our own macros, and name all our own macros the same style.
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each invocation
We can determine the list entry type via the typeof() gcc construct, and
so we should to make the macros much shorter to use.
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Emacs C indenting really gets confused by these lines if they carry no
trailing semicolon, hence let's make this nicer for good old emacs. The
other macros which define functions already do this too, so let's copy
the scheme here.
Also, let's use an uppercase name for the macro. So far our rough rule
was that macros that are totally not function-like (like this ones,
which define a function) are uppercase. (Well, admittedly it is a rough
rule only, for example function and variable decorators are all
lower-case SINCE THE CONSTANT YELLING IN THE SOURCES WOULD SUCK, and
also they at least got underscore prefixes.) Also, the macros that
define functions that we already have are all uppercase, so let's do the
same here...
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Since the invention of read-only memory, write-only memory has been
considered deprecated. Where appropriate, either make use of the
value, or avoid writing it, to make it clear that it is not used.
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This extends 62678ded 'efi: never call qsort on potentially
NULL arrays' to all other places where qsort is used and it
is not obvious that the count is non-zero.
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Always cache the results, and bypass low-level security calls when the
respective subsystem is not enabled.
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Before, when the user journal file was rotated, journal_file_rotate
could close the old file and fail to open the new file. In that
case, we would leave the old (deallocated) file in the hashmap.
On subsequent accesses, we could retrieve this stale entry, leading
to a segfault.
When journal_file_rotate fails with the file pointer set to 0,
old file is certainly gone, and cannot be used anymore.
https://bugzilla.redhat.com/show_bug.cgi?id=890463
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We already shew lines in full when using a pager or not on a
tty. The commit disables ellipsization in the sole remaining case,
namely when --follow is used.
This has been a popular request for a long time, and indeed, full
output seems much more useful. Old behaviour can still be requested by
using --no-full. Old options retain their behaviour for compatiblity,
but aren't advertised as much. This change applies only to jornalctl,
not to systemctl, when ellipsization is useful to keep the layout.
https://bugzilla.redhat.com/show_bug.cgi?id=984758
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Also print out unexpected epoll events explictly.
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clang FTW!
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