This was introduced with 6dafdda4a6, but
is actually caused by the fact that modules that have already been
installed cause dracut_install() to return without adding the module
to the hashmap. This can happen if an earlier-run dracut module chose
to install the same module. Now modprobe statements like:
softdep usb_storage post: uas
softdep uas pre: usb_storage
(which look weird, but are perfectly valid), cause
dracut_install() to enter an infinite recursion if and only if
at least one of the files has previously been installed by another
module.
Fix this by also adding already installed modules to the hashmap.
If there are any nonexistent libraries listed in /etc/ld.so.preload, ldd
prints error messages like:
ERROR: ld.so: object '/usr/lib64/libfoo.so.1' from /etc/ld.so.preload cannot be preloaded (cannot open shared object file): ignored.
This causes resolve_deps() to return error, which leads to symlinks
(like usr/bin/awk) not being copied into the initrd.
dracut, when passing --kmoddir, would only install modules that exist at
the same location as it will appear in the initramfs.
For most (possibly all) outputs, the output path would be /lib/modules,
so previously all kernel modules must be copied there or the module
installation silently fails.
Now use the original path variable, and install to the shortened path
variable (as calculated by kerneldirlen).
Note: This means that the argument to --kmoddir (and the modules filetree)
should be a directory that ends in 'lib/modules/$kernelversion'.
For the shell scripts, new environment variables were introduced.
dracutsysrootdir is the root directory, file existence checks use it.
DRACUT_LDCONFIG can override ldconfig with a different one that works
on the sysroot with foreign binaries.
DRACUT_LDD can override ldd with a different one that works
with foreign binaries.
DRACUT_TESTBIN can override /bin/sh. A cross-compiled sysroot
may use symlinks that are valid only when running on the target
so a real file must be provided that exist in the sysroot.
DRACUT_INSTALL now supports debugging dracut-install in itself
when run by dracut but without debugging the dracut scripts.
E.g. DRACUT_INSTALL="valgrind dracut-install or
DRACUT_INSTALL="dracut-install --debug".
DRACUT_COMPRESS_BZIP2, DRACUT_COMPRESS_LBZIP2, DRACUT_COMPRESS_LZMA,
DRACUT_COMPRESS_XZ, DRACUT_COMPRESS_GZIP, DRACUT_COMPRESS_PIGZ,
DRACUT_COMPRESS_LZOP, DRACUT_COMPRESS_ZSTD, DRACUT_COMPRESS_LZ4,
DRACUT_COMPRESS_CAT: All of the compression utilities may be
overridden, to support the native binaries in non-standard places.
DRACUT_ARCH overrides "uname -m".
SYSTEMD_VERSION overrides "systemd --version".
The dracut-install utility was overhauled to support sysroot via
a new option -r and fixes for clang-analyze. It supports
cross-compiler-ldd from
https://gist.github.com/jerome-pouiller/c403786c1394f53f44a3b61214489e6f
DRACUT_INSTALL_PATH was introduced so dracut-install can work with
a different PATH. In a cross-compiled environment (e.g. Yocto), PATH
points to natively built binaries that are not in the host's /bin,
/usr/bin, etc. dracut-install still needs plain /bin and /usr/bin
that are relative to the cross-compiled sysroot.
The hashmap pool allocate_tile/deallocate_tile code was removed
because clang-analyze showed errors in it. hashmap_copy was removed
because it wasn't used and clang-analyze showed errors in it.
DRACUT_INSTALL_LOG_TARGET and DRACUT_INSTALL_LOG_LEVEL were
introduced so dracut-install can use different settings from
DRACUT_LOG_TARGET and DRACUT_LOG_LEVEL.
Signed-off-by: Böszörményi Zoltán <zboszor@pr.hu>
The compressed firmware support was supposed to be already
implemented, but it didn't work as expected in the end, because dracut
moved to use dracut-install binary. This patch adds the support of
XZ-compressed firmware installation to dracut-install for fixing the
missing piece.
At best the firmware files should be uncompressed in initrd, but this
patch simply copies the compressed file as-is, as a quick workaround.
BugLink: https://bugzilla.suse.com/show_bug.cgi?id=1146769
Signed-off-by: Takashi Iwai <tiwai@suse.de>
The previous logic would not handle absolute paths on the left side of
the "=>" properly. For example, on Gentoo ARM64, ldd outputs this:
/lib/ld-linux-aarch64.so.1 => /lib64/ld-linux-aarch64.so.1
At runtime, the kernel tries to load the file from /lib, and fails if we
only provide it in /lib64.
Instead of looking for the first slash after the "=>", just look for the
first slash, period. This would fail if we somehow had a relative path
on the left side (foo/libbar.so), but I'm not aware of any binaries that
would contain such an entry in DT_NEEDED.
Bug: https://bugs.gentoo.org/667752
Signed-off-by: Mike Gilbert <floppym@gentoo.org>
Dracut uses the module deps to determine module dependencies
but that only works for modules with hard symbolic dependencies.
Some modules have dependencies created via callback API's or other
methods which aren't reflected in the modules.dep but rather in
modules.softdep through the use of "pre:" and "post:" commands
created in the kernel with MODULE_SOFTDEP().
Since in dracut we are only concerned about early boot, this patch
only looks at the pre: section of modules which are already being
inserted in the initrd under the assumption that the pre: section
lists dependencies required for the functionality of the module being
installed in the initrd.
Signed-off-by: Jeremy Linton <lintonrjeremy@gmail.com>
kerneldirlen is used to modify absolute path returned by
kmod_module_get_path() while it is calculated on user-supplied
--kerneldir argument which can be a relative path.
Use kmod_get_dirname() to convert user-supplied path to the same format
as used by kmod_module_get_path().
This also allows to get rid of now useless strcmp checks that seem to
imply that /lib and /usr/lib are linked which is not always true.
Specifying a different kernel module directory with --kmoddir would
result in the same directory being the destination directory.
Strip everything before the "/lib/modules" for the destination dir.
https://github.com/dracutdevs/dracut/issues/194
Preserve extended attributes when copying files using dracut-install.
The copying of extended attributes avoids file execution denials when
the Linux Integrity Measurement's Appraisal mode is active. In that mode
executables need their file signatures copied. In particular, this patch
solves the problem that dependent libaries are not included in the
initramfs since the copied programs could not be executed due to missing
signatures. The following audit record shows the type of failure that
is now prevented:
type=INTEGRITY_DATA msg=audit(1477409025.492:30065): pid=922 uid=0
auid=4294967295 ses=4294967295
subj=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023
op="appraise_data" cause="IMA-signature-required"
comm="ld-linux-x86-64"
name="/var/tmp/dracut.R6ySa4/initramfs/usr/bin/journalctl"
dev="dm-0" ino=37136 res=0
Signed-off-by: Stefan Berger <stefanb@linux.vnet.ibm.com>
If a module is renamed or another module takes care of the old one,
all of the alias strings have to be checked against the current set of
loaded modules.
This is still incomplete, because to be absolutely correct, all the
/sys/*...*/modalias files would have to be checked, if they match the
modules alias strings.
loginstall specifies a directory, in which dracut-install records all
files, which were installed from the host system to the initramfs.
Use case is e.g. to create a list of packages to watch for updates, to
maybe trigger a recreation of the initramfs.
inst* functions and dracut-install now accept the "-H" flag, which
logs all installed files to /lib/dracut/hostonly-files. This is used
to remove those files, if rd.hostonly is given on the kernel command line.
dracut-install could not handle output like:
/lib/$LIB/liblsp.so => /lib/lib64/liblsp.so (0x00007faf00727000)
also unset LD_PRELOAD, so we get a clean environment
some HW has different flavors of basic libs
$ ldconfig -p|fgrep libc.so
libc.so.6 (libc6,64bit, hwcap: 0x0000001000000000, OS ABI: Linux 2.6.32) => /lib64/power6/libc.so.6
libc.so.6 (libc6,64bit, hwcap: 0x0000000000000200, OS ABI: Linux 2.6.32) => /lib64/power6x/libc.so.6
libc.so.6 (libc6,64bit, OS ABI: Linux 2.6.32) => /lib64/libc.so.6
because setting LD_HWCAP_MASK=0 does not work, we have to workaround
this.
$ LD_TRACE_LOADED_OBJECTS=1 LD_HWCAP_MASK=0 /lib64/ld64.so.1 /bin/sh | fgrep libc.so
libc.so.6 => /lib64/power6/libc.so.6 (0x000000804e260000)
Now we try to install the same library from one directory above the one
we installed also.
asprintf prints to an allocated string. When successful, the
functions return the number of bytes printed. If memory allocation
wasn't possible, or some other error occurs, the function will return
-1.
Don't check strp as a result of asprintf, it's content may be undefined.
man 3 asprintf
Operate in install_all and install_one consequently on EXIT_SUCCESS
and EXIT_FAILURE termination code macros as they are meant to be
returned from these functions.
Harald Hoyer