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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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This does not belong in shared as it is mostly a detail of our networking subsystem.
Moreover, now we can use libudev here, which will simplify things.
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Increase the chance of using the same link local address between reboots. The
pseudo random sequence of addresses we attempt is now seeded with data that is
very likely to stay the same between reboots, but at the same time be unique
to the specific machine/nic.
First we try to use the ID_NET_NAME_* data from the udev db combined with the
machin-id, which is guaranteed to be unique and persistent, if available. If
that is not possible (e.g., in containers where we don't have access to the
udev db) we fallback to using the MAC address of the interface, which is
guaranteed to be unique, and likely to be persistent.
[tomegun: three minor changes:
- don't expose HASH_KEY in the siphash24 header
- get rid of some compile-warnings (and some casts at the same time),
by using uint8_t[8] rather than uint64_t in the api
- added commit message]
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https://bugs.freedesktop.org/show_bug.cgi?id=76335
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Also mount /dev/kdbus, /dev/mqueue and /dev/hugepages into the /dev for
namespaced services.
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https://bugs.freedesktop.org/show_bug.cgi?id=76335
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number of fixed strings
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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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After all, it is ultimately linked to libsystems.so anyway, thus belongs
there and shares very little with the rest of logind, hence let's move
this away.
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Also improve logging to print out the parsed address on error.
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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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utmp_wall() now takes an optional argument 'username_override' which
allows the caller to override the username shown on wall messages.
journald will use this to inform users that its wall messages comes from
'systemd-journald'.
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This is very useful when debugging sd-bus to look at messages.
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This adds the same root argument to search_and_fopen that
conf_files_list already has. Tools that use those two functions as a
pair can now be easily modified to load configuration files from an
alternate root filesystem tree.
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them fully log out
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"systemctl status"
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Similar to the read-only and no-automount flags of Microsoft Basic Data
Partitions, introduce our own flags. We map them to the same flag bits
as Microsoft's, to keep things simple.
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first argument
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With in_charset now reduced to a one-liner (plus asserts), make it a
static inline.
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This simplifies in_charset down to a one-liner, and allows for possible
optimizations of strspn in libc.
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If "systemctl switch-root" is called with a specific "INIT" or
/proc/cmdline contains "init=", then systemd would not serialize
itsself.
Let systemctl check, if the new init is in the standard systemd
installation path and if so, clear the INIT parameter,
to let systemd serialize itsself.
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files_same() returns
1, if the files are the same
0, if the files have different inode/dev numbers
errno, for any stat error
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/usr/bin/getent instead of in-process
When the container runs a different native architecture than the host we
shouldn't attempt to load the container's NSS modules with the host's
libc. Instead, resolve UID/GID by invoking /usr/bin/getent in the
container. The tool should be fairly universally available and allows us
to do resolving of the UID/GID with the container's libc in a parsable
format.
https://bugs.freedesktop.org/show_bug.cgi?id=75733
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Discoverable Partitions Specification
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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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When run in an initrd and no root= argument is set (or is set to
root=gpt-auto) we will automatically look for the root partition on the
same disk the EFI ESP is located on.
Since we look for swap, /home and /srv on the disk the root partition is
located on, we hence have a fully discoverable chain:
Firmware discovers the EFI ESP partition → the initrd discovers the
root partition → the host OS discovers swap, /home, and /srv.
Note that this requires an EFI boot loader that sets the
LoaderDevicePartUUID EFI variable, such as Gummiboot.
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same disk as the ESP, expose a property on the udev device
This is preparation for a logic to automatically discover the root
partition to boot from if no partition has been configured explicitly.
This makes use of our newly defined GPT type GUIDs for our root disks:
#define GPT_ROOT_X86 SD_ID128_MAKE(44,47,95,40,f2,97,41,b2,9a,f7,d1,31,d5,f0,45,8a)
#define GPT_ROOT_X86_64 SD_ID128_MAKE(4f,68,bc,e3,e8,cd,4d,b1,96,e7,fb,ca,f9,84,b7,09)
We define differen GUIDs for different architectures to allow images
which finde the right root partition for the appropriate arch.
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Already split variable assignments before invoking the callback. And
drop "rd." settings if we are not in an initrd.
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- Add support for finding and mounting /srv based on GPT data, similar
to how we already handly /home.
- Share the fsck logic between GPT, EFI and fstab generators
- Make sure we never run the EFI generator inside containers
- Drop DefaultDependencies=no from EFI mount units
- Other fixes
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--scope mode
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strings
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define for the max number of rlimits, too
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This way each user allocates from his own pool, with its own size limit.
This puts the size limit by default to 10% of the physical RAM size but
makes it configurable in logind.conf.
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Inexplicably, 550a40ec ('core: do not print invalid utf-8 in error
messages') only fixed two paths. Convert all of them now.
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This mirrors set_consume and makes the common use a bit nicer.
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The code checked for two lvalues that aren't even using
config_parse_path(), so let's drop these checks and make the function
completely generic again.
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load-fragment.c
The parse code actually checked for specific lvalue names, which is
really wrong for supposedly generic parsers...
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Let's keep specific config parsers close to where they are needed. Only
the really generic ones should be defined in conf-parser.[ch].
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Let's make the scope of the show-status stuff a bit smaller, and make it
private to the core, rather than shared API in shared/.
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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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As discussed on the ML these are useful to manage runtime directories
below /run for services.
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