| Commit message (Collapse) | Author | Age | Files | Lines |
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Otherwise a 'Before=remote-fs.target' dependency is added to the mount unit
which defeats the purpose of 'bg' option.
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via the mount options
No functional change.
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the mount unit
If an entry in fstab uses "x-systemd.automount" option and also asks for
additionnal dependencies via x-systemd.requires or such, then the dependencies
were applied to the automount unit.
But this unlikely to do the right thing and is inconsistent with what's done
for network mounts.
Indeed when an fstab entries has "_netdev,x-systemd.automount" options, the
dependencies against the network requested by "_netdev" are (correctly) applied
to the mount unit only and the automount unit remains ordered against
local-fs.target.
The same logic should be followed when extra deps are specified via the mount
options as automount units should always be ordered against local-fs.target.
Note: in general explicit deps specified via mount options should be used with
care and should be used to specify dependencies on other mount units only as it
can easily create ordering cycles otherwise like it's been seen in
https://github.com/systemd/systemd-stable/issues/69. Mount units (as well as
automount ones) are ordered before local-fs.target by default which is a
low-level target that most other units depend on.
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Mount read write only
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Support enabling the ReadwriteOnly= unit setting from fstab using
'x-systemd.rw-only'
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Mount fixes
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First After=local-fs-pre.target wasn't described in the man page although it's
part of the default dependencies automatically set by pid1.
Secondly, Before=local-fs.target was only set if the automount unit was
generated from the fstab-generator because the dep was explicitly
generated. It was also not documented as a default dependency.
Fix it by managing the dep from pid1 instead.
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fstab-generator was also handling the default ordering dependencies for mount
units setup in initrd. To do that it was turning the defaults dependencies off
completely and ordered the mount unit against either local-fs.target or
initrd-fs.target or initrd-root-fs.target itself.
But it had the bad side effect to also remove all other default dependencies as
well. Thus if an initrd mount was using _netdev, the network dependencies were
missing.
In general fstab-generator shouldn't use DefaultDependecies=no because it can
handle only a small set of the default dependencies the rest are dealt by pid1.
So this patch makes pid1 handle all default dependencies.
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Limit size of various tmpfs mounts to 10% of RAM, except volatile root and /var
to 25%. Another exception is made for /dev (also /devs for PrivateDevices) and
/sys/fs/cgroup since no (or very few) regular files are expected to be used.
In addition, since directories, symbolic links, device specials and xattrs are
not counted towards the size= limit, number of inodes is also limited
correspondingly: 4MB size translates to 1k of inodes (assuming 4k each), 10% of
RAM (using 16GB of RAM as baseline) translates to 400k and 25% to 1M inodes.
Because nr_inodes option can't use ratios like size option, there's an
unfortunate side effect that with small memory systems the limit may be on the
too large side. Also, on an extremely small device with only 256MB of RAM, 10%
of RAM for /run may not be enough for re-exec of PID1 because 16MB of free
space is required.
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Don't generate swap units if set to false
The inverse of this argument is present as "noswap" on Debian sysvinit
Ref:
https://salsa.debian.org/debian/sysvinit/blob/4422988cb41c3022eee7444378cac3b2e36eac28/debian/vars.sh#L34
https://salsa.debian.org/debian/sysvinit/blob/4422988cb41c3022eee7444378cac3b2e36eac28/debian/src/initscripts/etc/init.d/mountall.sh#L78
Fixes https://github.com/systemd/systemd/issues/6686
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cryptsetup
Let's hook it into both cryptsetup-generator and gpt-auto-generator with
a shared implementation in generator.c
Fixes: #8472
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Teaches systemd-fstab-generator these two unit options,
creating appropriate dependencies on the generated .mount
units. When used, they override any other automatically
generated dependencies, such as local-fs.target, and are
NOT suppressed by noauto. The new options are ignored for
/, in the same way that noauto is ignored.
Fixes: #14380
Signed-off-by: Antonio Russo <antonio.e.russo@gmail.com>
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See https://bugzilla.redhat.com/show_bug.cgi?id=1763488: when we say that
'foo@*.service' is not a valid unit name, this is not clear enough. Let's
include the name of the operation that does not support globbing in the
error message:
$ build/systemctl enable 'foo@*.service'
Glob pattern passed to enable, but globs are not supported for this.
Invalid unit name "foo@*.service" escaped as "foo@\x2a.service".
...
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chase_symlinks() would return negative on error, and either a non-negative status
or a non-negative fd when CHASE_OPEN was given. This made the interface quite
complicated, because dependning on the flags used, we would get two different
"types" of return object. Coverity was always confused by this, and flagged
every use of chase_symlinks() without CHASE_OPEN as a resource leak (because it
would this that an fd is returned). This patch uses a saparate output parameter,
so there is no confusion.
(I think it is OK to have functions which return either an error or an fd. It's
only returning *either* an fd or a non-fd that is confusing.)
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When the .automount unit file already existed for any reason in the
`normal-dir` passed to `systemd-fstab-generator`, but the normal .mount unit
file did not, `f` was closed (but _not_ set to NULL). The call to
`generator_open_unit_file(..., automount_name, &f)` then failed because the
.mount unit file already existed. Now `f` did not point to an open FILE and the
later cleanup from the `_cleanup_fclose_` attribute failed with a double free.
Reset `f` to NULL before reusing it.
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This is partially a refactoring, but also makes many more places use
unlocked operations implicitly, i.e. all users of fopen_temporary().
AFAICT, the uses are always for short-lived files which are not shared
externally, and are just used within the same context. Locking is not
necessary.
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Otherwise we can end up with an ordering cycle. Since d54bab90, all
local mounts now gain a default `Before=local-fs.target` dependency.
This doesn't make sense for `/sysroot` mounts in the initrd though,
since those happen later in the boot process.
Closes: #12231
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$ /run/systemd/generator/dev-mapper-fedora_krowka\x2dswap.swap
# Automatically generated by systemd-fstab-generator
# Automatically generated by systemd-fstab-generator
[Unit]
...
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Enable systemd-remount-fs.service dynamically
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Instead of enabling it unconditionally and then using ConditionPathExists=/etc/fstab,
and possibly masking this condition if it should be enabled for auto gpt stuff,
just pull it in explicitly when required.
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We just do a bunch of operations, and want to return the first failing error
code. Let's do this in the most straightforward way.
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It would work when the generator was run by systemd, since generators
are always started in "/", but when running the generator for debugging
purposes the result would be ... different.
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There should be no functional difference, except that the error message
is changd from "three or no arguments" to "zero or three arguments". Somehow
the inverted form always seemed strange.
umask() call is also dropped from run-generator. I think it wasn't dropped in
053254e3cb215df3b8c905bc39b920f8817e1c7d because the run generator was merged
around the same time.
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The idea is that anything which is related to actually manipulating mounts is
in mount-util.c, but functions for mountpoint introspection are moved to the
new file. Anything which requires libmount must be in mount-util.c.
This was supposed to be a preparation for further changes, with no functional
difference, but it results in a significant change in linkage:
$ ldd build/libnss_*.so.2
(before)
build/libnss_myhostname.so.2:
linux-vdso.so.1 (0x00007fff77bf5000)
librt.so.1 => /lib64/librt.so.1 (0x00007f4bbb7b2000)
libmount.so.1 => /lib64/libmount.so.1 (0x00007f4bbb755000)
libpthread.so.0 => /lib64/libpthread.so.0 (0x00007f4bbb734000)
libc.so.6 => /lib64/libc.so.6 (0x00007f4bbb56e000)
/lib64/ld-linux-x86-64.so.2 (0x00007f4bbb8c1000)
libblkid.so.1 => /lib64/libblkid.so.1 (0x00007f4bbb51b000)
libuuid.so.1 => /lib64/libuuid.so.1 (0x00007f4bbb512000)
libselinux.so.1 => /lib64/libselinux.so.1 (0x00007f4bbb4e3000)
libpcre2-8.so.0 => /lib64/libpcre2-8.so.0 (0x00007f4bbb45e000)
libdl.so.2 => /lib64/libdl.so.2 (0x00007f4bbb458000)
build/libnss_mymachines.so.2:
linux-vdso.so.1 (0x00007ffc19cc0000)
librt.so.1 => /lib64/librt.so.1 (0x00007fdecb74b000)
libcap.so.2 => /lib64/libcap.so.2 (0x00007fdecb744000)
libmount.so.1 => /lib64/libmount.so.1 (0x00007fdecb6e7000)
libpthread.so.0 => /lib64/libpthread.so.0 (0x00007fdecb6c6000)
libc.so.6 => /lib64/libc.so.6 (0x00007fdecb500000)
/lib64/ld-linux-x86-64.so.2 (0x00007fdecb8a9000)
libblkid.so.1 => /lib64/libblkid.so.1 (0x00007fdecb4ad000)
libuuid.so.1 => /lib64/libuuid.so.1 (0x00007fdecb4a2000)
libselinux.so.1 => /lib64/libselinux.so.1 (0x00007fdecb475000)
libpcre2-8.so.0 => /lib64/libpcre2-8.so.0 (0x00007fdecb3f0000)
libdl.so.2 => /lib64/libdl.so.2 (0x00007fdecb3ea000)
build/libnss_resolve.so.2:
linux-vdso.so.1 (0x00007ffe8ef8e000)
librt.so.1 => /lib64/librt.so.1 (0x00007fcf314bd000)
libcap.so.2 => /lib64/libcap.so.2 (0x00007fcf314b6000)
libmount.so.1 => /lib64/libmount.so.1 (0x00007fcf31459000)
libpthread.so.0 => /lib64/libpthread.so.0 (0x00007fcf31438000)
libc.so.6 => /lib64/libc.so.6 (0x00007fcf31272000)
/lib64/ld-linux-x86-64.so.2 (0x00007fcf31615000)
libblkid.so.1 => /lib64/libblkid.so.1 (0x00007fcf3121f000)
libuuid.so.1 => /lib64/libuuid.so.1 (0x00007fcf31214000)
libselinux.so.1 => /lib64/libselinux.so.1 (0x00007fcf311e7000)
libpcre2-8.so.0 => /lib64/libpcre2-8.so.0 (0x00007fcf31162000)
libdl.so.2 => /lib64/libdl.so.2 (0x00007fcf3115c000)
build/libnss_systemd.so.2:
linux-vdso.so.1 (0x00007ffda6d17000)
librt.so.1 => /lib64/librt.so.1 (0x00007f610b83c000)
libcap.so.2 => /lib64/libcap.so.2 (0x00007f610b835000)
libmount.so.1 => /lib64/libmount.so.1 (0x00007f610b7d8000)
libpthread.so.0 => /lib64/libpthread.so.0 (0x00007f610b7b7000)
libc.so.6 => /lib64/libc.so.6 (0x00007f610b5f1000)
/lib64/ld-linux-x86-64.so.2 (0x00007f610b995000)
libblkid.so.1 => /lib64/libblkid.so.1 (0x00007f610b59e000)
libuuid.so.1 => /lib64/libuuid.so.1 (0x00007f610b593000)
libselinux.so.1 => /lib64/libselinux.so.1 (0x00007f610b566000)
libpcre2-8.so.0 => /lib64/libpcre2-8.so.0 (0x00007f610b4e1000)
libdl.so.2 => /lib64/libdl.so.2 (0x00007f610b4db000)
(after)
build/libnss_myhostname.so.2:
linux-vdso.so.1 (0x00007fff0b5e2000)
librt.so.1 => /lib64/librt.so.1 (0x00007fde0c328000)
libpthread.so.0 => /lib64/libpthread.so.0 (0x00007fde0c307000)
libc.so.6 => /lib64/libc.so.6 (0x00007fde0c141000)
/lib64/ld-linux-x86-64.so.2 (0x00007fde0c435000)
build/libnss_mymachines.so.2:
linux-vdso.so.1 (0x00007ffdc30a7000)
librt.so.1 => /lib64/librt.so.1 (0x00007f06ecabb000)
libcap.so.2 => /lib64/libcap.so.2 (0x00007f06ecab4000)
libpthread.so.0 => /lib64/libpthread.so.0 (0x00007f06eca93000)
libc.so.6 => /lib64/libc.so.6 (0x00007f06ec8cd000)
/lib64/ld-linux-x86-64.so.2 (0x00007f06ecc15000)
build/libnss_resolve.so.2:
linux-vdso.so.1 (0x00007ffe95747000)
librt.so.1 => /lib64/librt.so.1 (0x00007fa56a80f000)
libcap.so.2 => /lib64/libcap.so.2 (0x00007fa56a808000)
libpthread.so.0 => /lib64/libpthread.so.0 (0x00007fa56a7e7000)
libc.so.6 => /lib64/libc.so.6 (0x00007fa56a621000)
/lib64/ld-linux-x86-64.so.2 (0x00007fa56a964000)
build/libnss_systemd.so.2:
linux-vdso.so.1 (0x00007ffe67b51000)
librt.so.1 => /lib64/librt.so.1 (0x00007ffb32113000)
libcap.so.2 => /lib64/libcap.so.2 (0x00007ffb3210c000)
libpthread.so.0 => /lib64/libpthread.so.0 (0x00007ffb320eb000)
libc.so.6 => /lib64/libc.so.6 (0x00007ffb31f25000)
/lib64/ld-linux-x86-64.so.2 (0x00007ffb3226a000)
I don't quite understand what is going on here, but let's not be too picky.
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Ideally, coccinelle would strip unnecessary braces too. But I do not see any
option in coccinelle for this, so instead, I edited the patch text using
search&replace to remove the braces. Unfortunately this is not fully automatic,
in particular it didn't deal well with if-else-if-else blocks and ifdefs, so
there is an increased likelikehood be some bugs in such spots.
I also removed part of the patch that coccinelle generated for udev, where we
returns -1 for failure. This should be fixed independently.
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systemd already sets the umask (see e3b8d0637dd755b3426f3363b2cdad63f738116c). When
running under systemd, we don't need to set it. And when *not* running under
systemd, for example during development, there is no reason to override the user
config. Let's just drop those calls.
$ git grep -e 'umask\(' -l 'src/*generator*' |xargs perl -i -0pe 's|^[^\n]*umask\([^\n]+\n\n||gms'
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These lines are generally out-of-date, incomplete and unnecessary. With
SPDX and git repository much more accurate and fine grained information
about licensing and authorship is available, hence let's drop the
per-file copyright notice. Of course, removing copyright lines of others
is problematic, hence this commit only removes my own lines and leaves
all others untouched. It might be nicer if sooner or later those could
go away too, making git the only and accurate source of authorship
information.
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This part of the copyright blurb stems from the GPL use recommendations:
https://www.gnu.org/licenses/gpl-howto.en.html
The concept appears to originate in times where version control was per
file, instead of per tree, and was a way to glue the files together.
Ultimately, we nowadays don't live in that world anymore, and this
information is entirely useless anyway, as people are very welcome to
copy these files into any projects they like, and they shouldn't have to
change bits that are part of our copyright header for that.
hence, let's just get rid of this old cruft, and shorten our codebase a
bit.
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The function is similar to path_kill_slashes() but also removes
initial './', trailing '/.', and '/./' in the path.
When the second argument of path_simplify() is false, then it
behaves as the same as path_kill_slashes(). Hence, this also
replaces path_kill_slashes() with path_simplify().
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Files which are installed as-is (any .service and other unit files, .conf
files, .policy files, etc), are left as is. My assumption is that SPDX
identifiers are not yet that well known, so it's better to retain the
extended header to avoid any doubt.
I also kept any copyright lines. We can probably remove them, but it'd nice to
obtain explicit acks from all involved authors before doing that.
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The warning is not emitted for absolute paths like /dev/sda or /home, which are
converted to .device and .mount unit names without any fuss.
Most of the time it's unlikely that users use invalid unit names on purpose,
so let's warn them. Warnings are silenced when --quiet is used.
$ build/systemctl show -p Id hello@foo-bar/baz
Invalid unit name "hello@foo-bar/baz" was escaped as "hello@foo-bar-baz" (maybe you should use systemd-escape?)
Id=hello@foo-bar-baz.service
$ build/systemd-run --user --slice foo-bar/baz --unit foo-bar/foo true
Invalid unit name "foo-bar/foo" was escaped as "foo-bar-foo" (maybe you should use systemd-escape?)
Invalid unit name "foo-bar/baz" was escaped as "foo-bar-baz" (maybe you should use systemd-escape?)
Running as unit: foo-bar-foo.service
Fixes #8302.
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(#8281)
Let's make this LOG_DEBUG, as this didn't used to be an issue, and
shouldn't really be still.
Replaces: #8132
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This removes LOG_TARGET_SAFE. It's made redundant by the new
"prohibit-ipc" logging flag, as it used to have a similar effect: avoid
logging to the journal/syslog, i.e. any local services in order to avoid
deadlocks when we lock from PID 1 or its utility processes (such as
generators).
All previous users of LOG_TARGET_SAFE are switched over to the new
setting. This makes things a bit safer for all, as not even the
SYSTEMD_LOG_TARGET env var can be used to accidentally log to the
journal anymore in these programs.
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It doesn't save too much, but it's a common pattern so I think it's worth
to factor this out.
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