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We are not interested in the struct dirent data, hence there's no point
in passing RECURSE_DIR_ENSURE_TYPE. Let's drop it, and thus avoid some
extrac work on file systems where readdir() does not report .d_type.
Also drop RECURSE_DIR_SAME_MOUNT, because DDIs after all may contain
multiple partitions, and we mount them all together. The --list command
really should report the full set of files in an image.
In tests it's useful to be able to delete temporary directories
via a file descriptor to them, so let's add rm_rf_physical_and_close()
which gets the file descriptor path via /proc and tries to remove it
that way.
The logic of running_in_chroot() has been the same since the introduction of
this function in b4f10a5e89: if /proc is not
mounted, the function returns -ENOENT and all callers treat this as false. But
that might be the most common case of chrooted calls, esp. in all the naïve
chroots that were done with the chroot binary without additional setup.
(In particular rpm executes all scriptlets in a chroot without bothering to set
up /proc or /sys, and we have codepaths in sysusers and tmpfiles to support
running in such an environment.)
This change effectively shortcircuits various calls to udevadm, downgrades
logging in tmpfiles, and disables all verbs marked with VERB_ONLINE_ONLY in
systemctl. detect-virt -r is also affected:
$ sudo chroot /var/lib/machines/rawhide
before> systemd-detect-virt -r && echo OK
Failed to check for chroot() environment: No such file or directory
after> systemd-detect-virt -r && echo OK
OK
Back in e2857b3d87 I added this function
as static inline in order to avoid linking libmount into libshared.
Nevertheless, a dependency on libmount was added to libbasic in
9e7f941acb, and later moved to libshared
in 77c772f227. So the shenanigan with an
inline function is not useful, let's make it a normal function.
This reverts commit 1f22621ba3.
As described in the reverted commit, we don't want to get rid of the check
completely. But the check requires opting-in by setting SYSTEMD_IN_INITRD=lenient,
which is cumbersome and doesn't seem to actually happen.
https://bugzilla.redhat.com/show_bug.cgi?id=2137631 is caused by systemd refusing
to treat the system as an initrd because overlayfs is used. Let's revert this
approach and do something that doesn't require opt-in instead.
I don't think it makes sense to keep support for "SYSTEMD_IN_INITRD=lenient" or
"SYSTEMD_IN_INITRD=auto". To get "auto" behaviour, just unset the option. And
"lenient" will be reimplemented as a better check. Thus the changes to the
option interface are completely reverted.
This helps in avoiding compiling errors on musl. Definition of
IFF_LOOPBACK is the reason for including linux/if_arp.h, this however
could be obtained from net/if.h glibc header equally and makes it
portable as well.
The name "def.h" originates from before the rule of "no needless abbreviations"
was established. Let's rename the file to clarify that it contains a collection
of various semi-related constants.
I wanted to move saved_arg[cv] to process-util.c+h, but this causes problems:
process-util.h includes format-util.h which includes net/if.h, which conflicts
with linux/if.h. So we can't include process-util.h in some files.
But process-util.c is very long anyway, so it seems nice to create a new file.
rename_process(), invoked_as(), invoked_by_systemd(), and argv_looks_like_help()
which lived in process-util.c refer to saved_argc and saved_argv, so it seems
reasonable to move them to the new file too.
util.c is now empty, so it is removed. util.h remains.
version.h can be generated after compilation starts, creating a race condition
between compilation of various .c files and creation of version.h. Let's add it
as a dependency to more build targets that require version.h or build.h.
So far we played whack'a'mole by adding versiondep whenever compilation failed.
In principle any target which includes compilation (i.e. any that has .c
sources directly), could require this. I don't understand why we didn't see
more failures… But it seems reasonable to just add the dependency more widely.
I changed imports of util.h to initrd-util.h, or added an import of
initrd-util.h, to keep compilation working. It turns out that many files didn't
import util.h directly.
When viewing the patch, don't be confused by git rename detection logic:
a new .c file is added and two functions moved into it.
It's a bit silly to have a separate file that one short test, but this is the
last part of the test code that is misplaced, and here consistency beats
brevity.
The function had just one caller and a name that didn't explain much.
Let's make it static and rename for clarity.
While at it, the only caller was not doing error handling correctly
— the function would potentially return a negative error value which
wasn't handled. In practice this couldn't happen, but let's remove
this ambiguity.
