71 lines
1.8 KiB
Plaintext
71 lines
1.8 KiB
Plaintext
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#!/bin/sh
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# Detects all UEFI bootloaders on EFI System Partition
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. /usr/share/os-prober/common.sh
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partition="$1"
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mpoint="$2"
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type="$3"
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# This file is for UEFI platform only
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if [ ! -d /sys/firmware/efi ]; then
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debug "Not on UEFI platform"
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exit 1
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fi
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# Weed out stuff that doesn't apply to us
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case "$type" in
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vfat) debug "$1 is a FAT32 partition" ;;
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msdos) debug "$1 is a FAT16 partition" ;;
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*) debug "$1 is $type partition: exiting"; exit 1 ;;
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esac
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if type udevadm > /dev/null 2>&1; then
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udevinfo () {
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udevadm info "$@"
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}
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fi
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if type udevinfo > /dev/null 2>&1; then
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# Skip virtual devices
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if udevinfo -q path -n $partition | grep -q /virtual/; then
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debug "$1 is virtual device: exiting"
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exit 1
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fi
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eval "$(udevinfo -q property -n "$partition" | grep -E '^ID_PART_ENTRY_(TYPE|SCHEME)=')"
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debug "$partition partition scheme is $ID_PART_ENTRY_SCHEME"
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debug "$partition partition type is $ID_PART_ENTRY_TYPE"
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if [ -z "$ID_PART_ENTRY_TYPE" -o -z "$ID_PART_ENTRY_SCHEME" -o \
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\( "$ID_PART_ENTRY_SCHEME" != gpt -a "$ID_PART_ENTRY_SCHEME" != msdos \) -o \
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\( "$ID_PART_ENTRY_SCHEME" = gpt -a "$ID_PART_ENTRY_TYPE" != c12a7328-f81f-11d2-ba4b-00a0c93ec93b \) -o \
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\( "$ID_PART_ENTRY_SCHEME" = msdos -a "$ID_PART_ENTRY_TYPE" != 0xef \) ]; then
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debug "$partition is not a ESP partition: exiting"
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exit 1
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fi
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else
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debug "udevinfo and udevadm missing - cannot check partition type"
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fi
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efi=$(item_in_dir efi "$mpoint")
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if [ -z "$efi" ]; then
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debug "$mpoint does not have /EFI directory: exiting"
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exit 1
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fi
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ret=1
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for test in /usr/lib/os-probes/mounted/efi/*; do
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debug "running subtest $test"
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if [ -f "$test" ] && [ -x "$test" ]; then
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entry=$("$test" "$mpoint/$efi")
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if [ -n "$entry" ]; then
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debug "bootloader $entry found by subtest $test"
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ret=0
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result "${partition}@/$efi/${entry}:efi"
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fi
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fi
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done
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exit $ret
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