6097b12df7
Implement the RTC_PARAM_GET RTC ioctl in hwclock. The ioctl interface was introduced with [1], which went mainline in Kernel v5.16. The parameters are independent of hardware/driver. This means we can read and set parameters in a generic way. The new --param-get hwclock function accepts aliases for parameters currently existent (Kernel v5.16). They can be extended later on. As fallback, hexadecimal (if prefixed with 0x) and decimal values, as defined in [2], are accepted. Example: $ hwclock --param-get features [1] https://lore.kernel.org/all/20211018151933.76865-1-alexandre.belloni@bootlin.com/ [2] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/include/uapi/linux/rtc.h Signed-off-by: Bastian Krause <bst@pengutronix.de>
63 lines
1 KiB
Text
63 lines
1 KiB
Text
_hwclock_module()
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{
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local cur prev OPTS
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COMPREPLY=()
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cur="${COMP_WORDS[COMP_CWORD]}"
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prev="${COMP_WORDS[COMP_CWORD-1]}"
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case $prev in
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'-f'|'--rtc'|'--adjfile')
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local IFS=$'\n'
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compopt -o filenames
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COMPREPLY=( $(compgen -f -- $cur) )
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return 0
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;;
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'--date'|'--delay')
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COMPREPLY=( $(compgen -W "time" -- $cur) )
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return 0
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;;
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'--epoch')
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COMPREPLY=( $(compgen -W "year" -- $cur) )
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return 0
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;;
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'--param-get')
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COMPREPLY=( $(compgen -W "param" -- $cur) )
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return 0
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;;
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'-h'|'-?'|'--help'|'-v'|'-V'|'--version')
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return 0
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;;
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esac
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case $cur in
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-*)
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OPTS="--help
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--show
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--get
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--set
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--hctosys
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--systohc
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--systz
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--adjust
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--getepoch
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--setepoch
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--predict
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--version
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--utc
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--localtime
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--rtc
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--directisa
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--date
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--delay
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--epoch
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--param-get
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--update-drift
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--noadjfile
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--adjfile
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--test
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--debug"
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COMPREPLY=( $(compgen -W "${OPTS[*]}" -- $cur) )
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return 0
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;;
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esac
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return 0
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}
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complete -F _hwclock_module hwclock
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