docs: document more creation functions for dracut modules

man/dracut.modules.7.asc

@@ -251,19 +251,47 @@ of the functions mentioned in <<creation>> to install files.
 
 === [[creation]]Creation Functions
 
-==== inst_multiple [-o] <file> [ <file> ...]
+==== inst_dir <dir>
+
+installs a directory <dir> (but not its content) to the same place in the
+initramfs image.
+
+==== inst [-H] <src> [<dst>]
+==== inst_binary <src> [<dst>]
+==== inst_script <src> [<dst>]
+
+installs _one_ file <src> either to the same place in the initramfs or to an
+optional <dst>, and also its dependencies and .hmac file (if it exists). inst
+with more than two arguments is treated the same as inst_multiple, all arguments
+are treated as files to install and none as install destinations.
+
+options:
+
+-H:: log all installed files to _/lib/dracut/hostonly-files_, so they can be
+removed if **rd.hostonly** is passed on the kernel command line.
+
+==== inst_simple [-H] <src> [<dst>]
+
+installs _one_ file <src> either to the same place in the initramfs or to an
+optional <dst>, but without installing its dependencies or .hmac file.
+
+options:
+
+-H:: log all installed files to _/lib/dracut/hostonly-files_, so they can be
+removed if **rd.hostonly** is passed on the kernel command line.
+
+==== inst_multiple [-H] [-o] <file> [ <file> ...]
 
 installs multiple binaries and files. If executables are specified without a
 path, dracut will search the path PATH=/usr/sbin:/sbin:/usr/bin:/bin for the
-binary. If the option "-o" is given as the first parameter, a missing file does
-not lead to an error.
+binary.
 
-==== inst <src> [<dst>]
+options:
 
-installs _one_ file <src> either to the same place in the initramfs or to an
-optional <dst>. inst with more than two arguments is treated the same as
-inst_multiple, all arguments are treated as files to install and none as
-install destinations.
+-H:: log all installed files to _/lib/dracut/hostonly-files_, so they can be
+removed if **rd.hostonly** is passed on the kernel command line.
+
+-o:: optional, a missing file does not lead to an error.
 
 ==== inst_hook <hookdir> <prio> <src>
 
@@ -275,7 +303,22 @@ installs an executable/script <src> in the dracut hook <hookdir> with priority
 installs one or more udev rules. Non-existent udev rules are reported, but do
 not let dracut fail.
 
-==== instmods <kernelmodule> [ <kernelmodule> ... ]
+==== inst_libdir_dir <dir> [<dir>...]
+
+installs multiple directories (but not their content) located on a library
+directory to the initramfs image.
+
+==== inst_libdir_file [-n <pattern>] [-o] <file> [<file>...]
+
+installs multiple files located on a library directory to the initramfs image.
+
+options:
+
+-n <pattern>:: install all library files matching a pattern.
+
+-o:: optional, a missing library does not lead to an error.
+
+==== instmods [-c] [-s] <kernelmodule> [ <kernelmodule> ... ]
 
 instmods should be used only in the installkernel() function.
 
@@ -289,6 +332,12 @@ To install a kernel module regardless of the hostonly mode use the form:
 hostonly='' instmods <kernelmodule>
 ----
 
+options:
+
+-c:: check that kernel modules exists and can be installed (i.e., not optional).
+
+-s:: reduce verbosity.
+
 === Initramfs Functions
 
 FIXME