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Allows configuring the watchdog signal (with a default of SIGABRT).
This allows an alternative to SIGABRT when coredumps are not desirable.
Appropriate references to SIGABRT or aborting were renamed to reflect
more liberal watchdog signals.
Closes#8658
Start with route set to NULL should there be no route created. Remove
the explicit route_free as the _cleanup_ will take care of that after
the continue;.
This is an implementation that covers making errors encountered when writing
file content optionally fatal. If this is something that folks would want I'll
add handling of this for all the other directives. I'd appreciate suggestions
on how this might better be structured as well (use of a goto fail or such) as
I'm not super happy with the approach.
Let's change utf16_to_utf8() prototype to refer to utf16 chars with char16_t rather than void
Let's not cast away a "const" needlessly.
Let's add a few comments.
Let's fix the calculations of the buffer size to allocate, and how long
to run the loop in case of uneven byte numbers
Let's fix an indentation issue.
Let's avoid yoda comparisons.
Let's drop unnecessary ().
Let's make sure we convert 16bit values to 32bit before shifting them by
10bit to the left, to avoid overflows.
Let's avoid comparisons between signed literals and unsigned variables,
in particular if the literals are outside of the minimum range C
requires for "int".
Let's avoid a few casts in the function. Also, let's drop the "const"
when returning the string, for similar reasons as strchr() and friends
drop it: so that we don't add a const if the user passes in a non-const
string.
Yes, there are still a lot of users of bzip2, but it's fallen out of
favour after LZMA/xz, which can compress a lot more and often
decompresses faster than bzip2 too.
We use strtoul() which returns an "unsigned long", but then assign this
to int or unsigned in, i.e. drop 32bit silently on 64bit systems. Let's
clean this up a bit, and retain the right types.
This stuff is likely to fail in many setups (for example when quota is
not supported by the btrfs version), hence only log at debug
level. Previously we'd silently ignore things altogether which makes
things pretty hard to debug.
This changes the output a bit, as the previous multi-line output of each
inhibitor is changed to a single line, but it does unify the output look
with the one of our other tools. Moreover this adds proper sorting.
When we parse an "u" from an sd_bus_message then we need to do that into
a uint32_t, not a pid_t or uid_t, even if this is likely the same.
Also, let's count objects we keep in memory as size_t as usual.
In seccomp code, the code is changed to propagate errors which are about
anything other than unknown/unimplemented syscalls. I *think* such errors
should not happen in normal usage, but so far we would summarilly ignore all
errors, so that part is uncertain. If it turns out that other errors occur and
should be ignored, this should be added later.
In nspawn, we would count the number of added filters, but didn't use this for
anything. Drop that part.
The comments suggested that seccomp_add_syscall_filter_item() returned negative
if the syscall is unknown, but this wasn't true: it returns 0.
The error at this point can only be if the syscall was known but couldn't be
added. If the error comes from our internal whitelist in nspawn, treat this as
error, because it means that our internal table is wrong. If the error comes
from user arguments, warn and ignore. (If some syscall is not known at current
architecture, it is still silently ignored.)
Our logs are full of:
Sep 19 09:22:10 autopkgtest systemd[690]: Failed to add rule for system call oldstat() / -10037, ignoring: Numerical argument out of domain
Sep 19 09:22:10 autopkgtest systemd[690]: Failed to add rule for system call get_thread_area() / -10076, ignoring: Numerical argument out of domain
Sep 19 09:22:10 autopkgtest systemd[690]: Failed to add rule for system call set_thread_area() / -10079, ignoring: Numerical argument out of domain
Sep 19 09:22:10 autopkgtest systemd[690]: Failed to add rule for system call oldfstat() / -10034, ignoring: Numerical argument out of domain
Sep 19 09:22:10 autopkgtest systemd[690]: Failed to add rule for system call oldolduname() / -10036, ignoring: Numerical argument out of domain
Sep 19 09:22:10 autopkgtest systemd[690]: Failed to add rule for system call oldlstat() / -10035, ignoring: Numerical argument out of domain
Sep 19 09:22:10 autopkgtest systemd[690]: Failed to add rule for system call waitpid() / -10073, ignoring: Numerical argument out of domain
...
This is pointless and makes debug logs hard to read. Let's keep the logs
in test code, but disable it in nspawn and pid1. This is done through a function
parameter because those functions operate recursively and it's not possible to
make the caller to log meaningfully.
There should be no functional change, except the skipped debug logs.
