add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/fs/affs/amigaffs.h
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@@ -32,6 +32,9 @@
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 #define AFFS_ROOT_BMAPS		25
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+/* Seconds since Amiga epoch of 1978/01/01 to UNIX */
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+#define AFFS_EPOCH_DELTA ((8 * 365 + 2) * 86400LL)
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+
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 struct affs_date {
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 	__be32 days;
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 	__be32 mins;