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net/dhcp: Allow overloading legacy bootfile and name field

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DHCP specifies a special dummy option OVERLOAD, to allow DHCP options to
spill over into the (legacy) BOOTFILE and SNAME fields.

Parse and handle this option properly.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
This commit is contained in:
Andrei Borzenkov 2019-03-07 15:14:09 +00:00 • committed by Vincent Batts
parent 6c38b920c8
commit 6c0969eed5
2 changed files with 59 additions and 1 deletions
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include/grub/net.h
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@ -458,6 +458,7 @@ enum
GRUB_NET_BOOTP_DOMAIN = 0x0f,
GRUB_NET_BOOTP_ROOT_PATH = 0x11,
GRUB_NET_BOOTP_EXTENSIONS_PATH = 0x12,
GRUB_NET_DHCP_OVERLOAD = 52,
GRUB_NET_BOOTP_END = 0xff
};