This introduces a new setting TemporaryFileSystem=. This is useful
to hide files not relevant to the processes invoked by unit, while
necessary files or directories can be still accessed by combining
with Bind{,ReadOnly}Paths=.
In the parse logic `line_get_key_value()` in sd-boot treats spaces
and tabs are valid spacing between key and value in the line.
So, let's use the same logic for `bootctl` and the others which read
sd-boot configs.
Fixes#8154.
This is similar to 3c3d384ae9 and
a workaround for the following warning.
```
In file included from ../src/basic/in-addr-util.h:28,
from ../src/nss-mymachines/nss-mymachines.c:31:
../src/nss-mymachines/nss-mymachines.c: In function '_nss_mymachines_getgrnam_r':
../src/nss-mymachines/nss-mymachines.c:653:32: warning: argument to 'sizeof' in 'memset' call is the same pointer type 'char *' as the destination; expected 'char' or an explicit length [-Wsizeof-pointer-memaccess]
memzero(buffer, sizeof(char*));
^~~~
../src/basic/util.h:118:39: note: in definition of macro 'memzero'
#define memzero(x,l) (memset((x), 0, (l)))
^
../src/nss-mymachines/nss-mymachines.c: In function '_nss_mymachines_getgrgid_r':
../src/nss-mymachines/nss-mymachines.c:730:32: warning: argument to 'sizeof' in 'memset' call is the same pointer type 'char *' as the destination; expected 'char' or an explicit length [-Wsizeof-pointer-memaccess]
memzero(buffer, sizeof(char*));
^~~~
../src/basic/util.h:118:39: note: in definition of macro 'memzero'
#define memzero(x,l) (memset((x), 0, (l)))
^
```
Found by the following warning by gcc.
```
../src/network/networkd-manager.c: In function 'dhcp6_prefixes_compare_func':
../src/network/networkd-manager.c:1383:16: warning: 'memcmp' reading 16 bytes from a region of size 8 [-Wstringop-overflow=]
return memcmp(&a, &b, sizeof(*a));
^
```
Before this, each ExecRuntime object is owned by a unit. However,
it may be shared with other units which enable JoinsNamespaceOf=.
Thus, by the serialization/deserialization process, its sharing
information, more specifically, reference counter is lost, and
causes issue #7790.
This makes ExecRuntime objects be managed by manager, and changes
the serialization/deserialization process.
Fixes#7790.
EnvironmentFile= is used in the unit file, but in the dbus,
the related field name is EnvironmentFiles=.
As the other variables, let's use the field name instead of the name
used in the unit file setting.
The function `strv_join_quoted()` is now not used, and has a bug
in the buffer size calculation when the strings needs to escaped,
as reported in #8056.
So, let's remove the function.
Closes#8056.
Before this, `systemctl show` for calendar type timer unit outputs
something like below.
```
NextElapseUSecRealtime=48y 3w 3d 15h
NextElapseUSecMonotonic=0
LastTriggerUSec=48y 3w 3d 3h 41min 44.093095s
LastTriggerUSecMonotonic=0
```
As both NextElapseUSecRealtime= and LastTriggerUSec= are not timespan
but timestamp, this makes format these values by `format_timestamp()`.
The commit f14f1806e3 introduced CHASE_SAFE
flag. When the flag is set, then `fd_parent` may not be properly closed.
This sets `_cleanup_close_` attribute to `fd_parent`.
Thus, now `fd_parent` is always closed properly.
The commit b1bfb84804 makes chase_symlinks()
recognize empty string for root as an invalid parameter. However,
empty root is often used e.g. systemd-nspawn.
This makes chase_symlinks() support empty string safely.
Fixes#7927.
For old kernels not supporting AmbientCapabilities=, networkd is
started as root with limited capabilities. Then, networkd cannot
chown the directories under runtime directory as
CapabilityBoundingSet= does not contains enough capabilities.
This makes these directories are created after dropping privileges.
Thus, networkd does not need to chown them anymore.
Fixes#7863.
This fixes the following warnings:
```
[194/1521] Compiling C object 'src/libsystemd-network/systemd-network@sta/dhcp6-option.c.o'.
../../git/systemd/src/libsystemd-network/dhcp6-option.c:110:25: warning: taking address of packed member 'id' of class or structure 'ia_na' may result in an unaligned pointer value [-Waddress-of-packed-member]
iaid = &ia->ia_na.id;
^~~~~~~~~~~~
../../git/systemd/src/libsystemd-network/dhcp6-option.c:115:25: warning: taking address of packed member 'id' of class or structure 'ia_ta' may result in an unaligned pointer value [-Waddress-of-packed-member]
iaid = &ia->ia_ta.id;
^~~~~~~~~~~~
2 warnings generated.
```
Yu Watanabe