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sysroot: Support boot counting for boot entries
Add support for boot counting for bootloader entries [1]. The boot counting data is stored in the name of the boot loader entry. A boot loader entry file name may contain a plus (+) followed by a number. This may optionally be followed by a minus (-) followed by a second number. The dot (.) and file name suffix (conf or efi) must immediately follow. The feature is enabled via sysroot configuration: [sysroot] boot-counting-tries=3 Testing: $ ostree admin deploy 91fc19319be9e79d07159303dff125f40f10e5c25614630dcbed23d95e36f907 Copying /etc changes: 2 modified, 3 removed, 4 added bootfs is sufficient for calculated new size: 0 bytes Transaction complete; bootconfig swap: yes; bootversion: boot.0.1, deployment count change: 1 $ ls /boot/loader/entries ostree-1.conf ostree-2+3.conf [1] https://uapi-group.org/specifications/specs/boot_loader_specification/#boot-counting Signed-off-by: Igor Opaniuk <[email protected]>
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