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2 lines after the changed line we assign err to efi_get_variable(...)
unconditionally, so it makes no sense to initialize it to some value.
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This fixes a bug pointed out by http://css.csail.mit.edu/stack/
(Optimization-unstable code)
It is a similar fix as f146f5e159 (2013-12-30, core:
Forgot to dereference pointer when checking for NULL)
To explain this bug consider the following similar, but simpler code:
if (!p)
free(*p)
Assume the if condition evaluates to true, then we will access *p,
which means the compiler can assume p is a valid pointer, so it could
dereference p and use the value *p.
Assuming p as a valid pointer, !p will be false.
But initally we assumed the condition evaluates to true.
By this reasoning the optimizing compiler can deduce, we have dead code.
("The if will never be taken, as *p must be valid, because otherwise
accessing *p inside the if would segfault")
This led to an error message of the static code checker, so I checked the
code in question.
As we access *modes and *states before the check in the changed line of
this patch, I assume the line to be wrong and we actually wanted to check
for *modes and *states being both non null.
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Directly before the changed line there is:
while ((parent->next_ps && parent->pid != ps->ppid))
parent = parent->next_ps;
which looks one element ahead of the list, hence we can rely on parent
being non null here.
If 'parent' were NULL at that while loop already, it would crash as we're
dereferencing 'parent' when checking for next_ps already.
Signed-off-by: Stefan Beller <stefanbeller@googlemail.com>
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As suggested by Kay, it is better to describe what is done,
not what might happen.
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Actually we already checked for !rt before, now we'd like to examine
the return value of the memory allocation.
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The return value of 0 would be treated as failure by mistake,
resulting in " SystemError: error return without exception set".
The way that set_error() is used is changed to be the same
everywhere.
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Nspawn has --setenv, and systemd itself accepts systemd.setenv.
It is nice to have the same parameter name everywhere.
Old name is accepted, but not advertised.
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This was causing a nasty coredump
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SELinux check will be done using the context of the unit file as as a
target instead of the default init_t context, allowing selinux control
on the level of individual units.
https://bugzilla.redhat.com/show_bug.cgi?id=1022762
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compat parser
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to kdbus
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Suggested-by: Russ Allbery <rra@debian.org>
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Also properly free memory if list-unit-files --root=... is used.
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gdm relies on the policy to deny its own requests to not deadlock. Given
that we currently do not enforce any policy in the dbus1 compat proxy
service this means that gdm will necessarily deadlock on our systems.
To work around this, enforce a fixed policy teomporarily, until we
interpret the legacy XML policy in full.
Booh, gdm, booh, for requring this and making me waste two days on
tracking this brokenness down.
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This reverts commit cf5bccc2bb9569030cb04debbc4208aaca0fe5b4.
We should fix thinks properly if they aren't perfect, not just break
other things...
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This flag shouldn't try and consume the following argument. It should
behave like every other flag which takes an optional argument when
parsed by getopt_long.
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Even if the lower-leveld dbus1 protocol calls it "serial", let's expose
the word "cookie" for this instead, as this is what kdbus uses and since
it doesn't imply monotonicity the same way "serial" does.
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socket-activated services
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Since 0c6f1f4ea49 the check was useless, because the kernel will
ever only write "partition" or "file" there.
OTOH, it is possible that "\\040(deleted)" (escaped " (deleted)")
will be added for removed files. This should not happen, so add
a warning to detect those cases.
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Various operations done by systemd-tmpfiles may only be safely done at
boot (e.g. removal of X lockfiles in /tmp, creation of /run/nologin).
Other operations may be done at any point in time (e.g. setting the
ownership on /{run,var}/log/journal). This distinction is largely
orthogonal to the type of operation.
A new switch --unsafe is added, and operations which should only be
executed during bootup are marked with an exclamation mark in the
configuration files. systemd-tmpfiles.service is modified to use this
switch, and guards are added so it is hard to re-start it by mistake.
If we install a new version of systemd, we actually want to enforce
some changes to tmpfiles configuration immediately. This should now be
possible to do safely, so distribution packages can be modified to
execute the "safe" subset at package installation time.
/run/nologin creation is split out into a separate service, to make it
easy to override.
https://bugzilla.redhat.com/show_bug.cgi?id=1043212
https://bugzilla.redhat.com/show_bug.cgi?id=1045849
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