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115 lines
1.9 KiB
Markdown
115 lines
1.9 KiB
Markdown
# kmod
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Multi-call executable that implements: `lsmod`, `insmod`, `rmmod`, and other tools.
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BusyBox also implements its own version of those executables.
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Source: <https://git.kernel.org/pub/scm/utils/kernel/kmod/kmod.git>
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The other tools are just symlinks to it.
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## module-init-tools
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Name of a predecessor set of tools.
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## package version
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From any of the commands, `--version`:
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modinfo --version
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Package that provides utilities
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## lsmod
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List loaded kernel modules.
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Info is taken from `/proc/modules`
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lsmod
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Sample output:
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cfg80211 175574 2 rtlwifi,mac80211
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^^^^^^^^ ^^^^^^ ^ ^^^^^^^,^^^^^^^^
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1 2 3 4 5
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1. Name.
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2. Size.
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3. Number of running instances.
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If negative, TODO
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4. Depends on 1.
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5. Depends on 2.
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To get more info:
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cat /proc/modules
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Also contains two more columns:
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- status: Live, Loading or Unloading
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- memory offset: 0x129b0000
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## modinfo
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Get info about a module by filename or by module name:
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modinfo ./a.ko
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modinfo a
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TODO must take a `.ko` file?
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## insmod
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sudo insmod hello.ko
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Loads the module.
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Does not check for dependencies.
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## rmmod
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Remove a module. Takes either the module name or the `.ko` file:
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sudo rmmod hello
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sudo rmmod ./hello.ko
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## modprobe
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Vs `insmod`:
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- <https://askubuntu.com/questions/20070/whats-the-difference-between-insmod-and-modprobe>
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- <https://stackoverflow.com/questions/22891705/whats-the-difference-between-insmod-and-modprobe>
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List available modules relative path to `/lib/modules/$KERNEL_VERSION/`:
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sudo modprobe -l
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Load the module:
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sudo modprobe $m
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Checks for dependencies.
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Load module under different name to avoid conflicts:
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sudo modprobe vmhgfs -o vm_hgfs
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Remove module:
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sudo modprobe -r $m
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Check if dependencies are OK:
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sudo depmod -a
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Get info about given `.ko` module file:
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m=a
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sudo rmmod $m
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