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/etc/functions:mount_possible_boot_device; punch exclusion of mount attempt on partitions <2Mb (4096 sectors)

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Removes spurious errors thrown for exfat in dmesg in that function. Something better to propose?

Signed-off-by: Thierry Laurion <insurgo@riseup.net>
This commit is contained in:
Thierry Laurion 2024-09-08 13:37:33 -04:00
parent 3574e12be9
commit faa77d4064
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GPG Key ID: 9A53E1BB3FF00461
1 changed files with 17 additions and 6 deletions
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23
initrd/etc/functions
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@ -697,13 +697,24 @@ mount_possible_boot_device() {
return 1
fi
TRACE "Try mounting $BOOT_DEV as /boot"
if mount -o ro "$BOOT_DEV" /boot >/dev/null 2>&1; then
if ls -d /boot/grub* >/dev/null 2>&1; then
# This device is a reasonable boot device
return 0
fi
# Get the size of BOOT_DEV in 512-byte sectors
sectors=$(blockdev --getsz "$BOOT_DEV")
# Check if the partition is small (less than 2MB, which is 4096 sectors)
if [ "$sectors" -lt 4096 ]; then
TRACE_FUNC
DEBUG "Partition $BOOT_DEV is very small, likely BIOS boot. Skipping mount."
return 1
else
TRACE_FUNC
DEBUG "Try mounting $BOOT_DEV as /boot"
if mount -o ro "$BOOT_DEV" /boot >/dev/null 2>&1; then
if ls -d /boot/grub* >/dev/null 2>&1; then
# This device is a reasonable boot device
return 0
fi
umount /boot || true
fi
fi
return 1