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In 4.2 kernel headers, some netlink defines are missing that we need. missing.h
already can add them in, but currently makes this dependent on a definition
that these kernels already have. Change the check hence to check for the newest
definition in the table, so that the whole bunch of definitions as added in on
all kernels lacking this.
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created in too
Fixes: #2831
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On s390 size_t is an unsigned long, nor an unsigned int. They both are
of the same size and can be cast to each other safely, but the compiler
still seems unhappy about incompatible pointers.
Fixes: 7c2da2ca8
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Various small cleanups in shared code
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Added to kernel 4.6.
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In standard linux parlance, "hidden" usually means that the file name starts
with ".", and nothing else. Rename the function to convey what the function does
better to casual readers.
Stop exposing hidden_file_allow_backup which is rather ugly and rewrite
hidden_file to extract the suffix first. Note that hidden_file_allow_backup
excluded files with "~" at the end, which is quite confusing. Let's get
rid of it before it gets used in the wrong place.
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dirent_is_file_with_suffix
If the file name is supposed to end in a suffix, there's not need to check the
name against a list of "special" file names, which is slow. Instead, just check
that the name doens't start with a period.
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ucf is a standard Debian helper for managing configuration file upgrades which
need more interaction or elaborate merging than conffiles managed by dpkg.
Ignore its temporary and backup files similarly to the *.dpkg-* ones to avoid
creating units for them in generators.
https://bugs.debian.org/775903
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nspawn automatic user namespaces
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This should allow tools like rkt to pre-mount read-only subtrees in the OS
tree, without breaking the patching code.
Note that the code will still fail, if the top-level directory is already
read-only.
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With this change -U will turn on user namespacing only if the kernel actually
supports it and otherwise gracefully degrade to non-userns mode.
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In nspawn we invoke copy_bytes() on a TTY fd. copy_file_range() returns EBADF
on a TTY and this error is considered fatal by copy_bytes() so far. Correct
that, so that nspawn's copy_bytes() operation works again.
This is a follow-up for a44202e98b638024c45e50ad404c7069c7835c04.
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This is slightly nicer, since we actually watch the directories we opened and
enumerate. However, primarily this is preparation for adding support for
opening journal files by fd without specifying any path, to be added in a later
commit.
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This moves the O_TMPFILE handling from the coredumping code into common library
code, and generalizes it as open_tmpfile_linkable() + link_tmpfile(). The
existing open_tmpfile() function (which creates an unlinked temporary file that
cannot be linked into the fs) is renamed to open_tmpfile_unlinkable(), to make
the distinction clear. Thus, code may now choose between:
a) open_tmpfile_linkable() + link_tmpfile()
b) open_tmpfile_unlinkable()
Depending on whether they want a file that may be linked back into the fs later
on or not.
In a later commit we should probably convert fopen_temporary() to make use of
open_tmpfile_linkable().
Followup for: #3065
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Before we invoke now(CLOCK_BOOTTIME), let's make sure we actually have that
clock, since now() will otherwise hit an assert.
Specifically, let's refuse CLOCK_BOOTTIME early in sd-event if the kernel
doesn't actually support it.
This is a follow-up for #3037, and specifically:
https://github.com/systemd/systemd/pull/3037#issuecomment-210199167
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This adds a new GetProcesses() bus call to the Unit object which returns an
array consisting of all PIDs, their process names, as well as their full cgroup
paths. This is then used by "systemctl status" to show the per-unit process
tree.
This has the benefit that the client-side no longer needs to access the
cgroupfs directly to show the process tree of a unit. Instead, it now uses this
new API, which means it also works if -H or -M are used correctly, as the
information from the specific host is used, and not the one from the local
system.
Fixes: #2945
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IPv6 protocol requires a minimum MTU of 1280 bytes on the interface.
This fixes #3046.
Introduce helper link_ipv6_enabled() to figure out whether IPV6 is enabled.
Introduce network_has_static_ipv6_addresses() to find out if any static
ipv6 address configured.
If IPv6 is not configured on any interface that is SLAAC, DHCPv6 and static
IPv6 addresses not configured, then IPv6 will be automatically disabled for that
interface, that is we write "1" to /proc/sys/net/ipv6/conf//disable_ipv6.
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After all it's something that we query over and over.
For example, systemctl calls colors_enabled() four times for each failing
service. The compiler is unable to optimize those calls away because they
(potentially) accesses external and global state through on_tty() and
getenv().
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Otherwise building may fail with:
src/basic/user-util.c: In function 'get_home_dir':
src/basic/user-util.c:343:9: error: implicit declaration of function 'secure_getenv' [-Werror=implicit-function-declaration]
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Fixes #3047.
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We don#t really support systems where XDG_RUNTIME_DIR is not supported for
systemd --user. Hence, let's always set our own XDG_RUNTIME_DIR for tests that
involve systemd --user, so that we know it is set, and that it doesn't polute
the user's actual runtime dir.
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numbers
And port all code over to use it.
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it's unused, and should we need it one day we can always resurrect it from git
history.
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Always warn if something fails, and clarify that the involved utility functions
do so in their name.
Drop the REBOOT_PARAM_FILE macro. We don't do this for other flag file paths
like this, so don't do this for this one either. The path isn't configurable
anyway, hence let's make this easier to read by avoiding this one indirection.
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Let's be extra careful with the umask when we use simple fopen(), as this
creates files with 0777 by default.
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With this change the logic for placing transient unit files and drop-ins
generated via "systemctl set-property" is reworked.
The latter are now placed in the newly introduced "control" unit file
directory. The fomer are now placed in the "transient" unit file directory.
Note that the properties originally set when a transient unit was created will
be written to and stay in the transient unit file directory, while later
changes are done via drop-ins.
This is preparation for a later "systemctl revert" addition, where existing
drop-ins are flushed out, but the original transient definition is restored.
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CID #1304689.
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Man coredump sysctl
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Add a test for nss modules and some related fixes
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nss-dns is also "tested". It should be almost always available,
and provides a reference for comparison.
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*.localdomain != localhost
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".localdomain" is not a reserved suffix (or prefix). I'm not aware of any
product expecting *.localdomain to resolve to localhost, however I am aware of
at least one product that defaults to ".localdomain" as its DNS suffix provided
via DHCP (pfSense). This leads to unexpected results when attempting to access
a host that's offline (or a host that's online, when nsswitch.conf is
[mis-]configured to have myhostname ahead of DNS).
Operate on:
localhost (and localhost.)
*.localhost (and *.localhost.)
localhost.localdomain (and localhost.localdomain.)
*.localhost.localdomain (and *.localhost.localdomain.)
We should not cover:
*.localdomain (nor *.localdomain.)
localdomain (nor localdomain.)
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* tests-functions: improve FSTYPE-support
make clean setup FSTYPE=reiserfs is working fine now :)
* basic: fallback to fstatat if entry->d_type is DT_UNKNOWN
Fixes localectl on reiserfs:
-bash-4.3# mkdir -p /usr/lib/locale
-bash-4.3# stat -f /usr/lib/locale/
File: "/usr/lib/locale/"
ID: bdb0322715b5366e Namelen: 255 Type: reiserfs
Block size: 4096
Blocks: Total: 99835 Free: 60262 Available: 60262
Inodes: Total: 0 Free: 0
-bash-4.3# mkdir /usr/lib/locale/HeyHo
-bash-4.3# localectl list-locales --no-pager
-bash-4.3# mount -t tmpfs tmpfs /usr/lib/locale
-bash-4.3# mkdir /usr/lib/locale/HeyHo
-bash-4.3# localectl list-locales --no-pager
HeyHo
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In preparation for subsequent changes.
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Both types are unsigned, so the cast to the longer type is automatic.
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The patch is not minimal, but a function to parse size_t is probably
going to come in handy in other places, so I think it's nicer to define
a proper parsing function than to open-code the cast.
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Earlier during the development of unified hierarchy, the populated event was
reported through by the dedicated "cgroup.populated" file; however, the
interface was updated so that it's reported through the "populated" field of
"cgroup.events" file. Update populated event handling logic accordingly.
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Since Linux v4.4-rc1, __DEVEL__sane_behavior does not exist anymore and
is replaced by a new fstype "cgroup2".
With this patch, systemd no longer supports the old (unstable) way of
doing unified hierarchy with __DEVEL__sane_behavior and systemd now
requires Linux v4.4 for unified hierarchy.
Non-unified hierarchy is still the default and is unchanged by this
patch.
https://github.com/torvalds/linux/commit/67e9c74b8a873408c27ac9a8e4c1d1c8d72c93ff
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Fixes #2823.
Also remove unnecessary feof check.
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Use sendfile smarter
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We have a bunch of syscall wrapper definitions and it's easier to
see that they follow the same pattern if they are not interspersed
with other defines.
Change the wrappers to be uniform:
- if __NR_XXX is not defined, do not bother to call the syscall,
and return -1/ENOSYS immediately.
- do not check __NR_XXX defines if we detect the symbol as defined,
since we don't need them anyway
- reindent stuff for readability
New file basic/missing_syscall.h is included at the end of missing.h
because it might make use of some of the definitions in missing.h.
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For btrfs, c_f_r() is like BTRFS_IOC_CLONE which we already used, but also
works when max_bytes is set. We do call copy_bytes in coredump code with
max_bytes set, and for large files, so we might see some benefit from using
c_f_r() on btrfs.
For other filesystems, c_f_r() falls back to do_splice_direct(), the same as
sendfile, which we already call, so there shouldn't be much difference.
Tested with test-copy and systemd-coredump on Linux 4.3 (w/o c_f_r)
and 4.5 (w/ c_f_r).
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syscall numbers based on:
https://fedora.juszkiewicz.com.pl/syscalls.html
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Clang warnings
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