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< a name = "l1" > < / a > < span class = cF5 > RedSea File System< / span > < span class = cF0 >
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< a name = "l2" > < / a >
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< a name = "l3" > < / a > The RedSea file system is a simple, 64-bit, file system which is similar to FAT32, but with absolute block addresses instead
< a name = "l4" > < / a > of clus, fixed-sized 64-byte directory entries and no FAT table, just an allocation bitmap. A clus is just one 512 byte
< a name = "l5" > < / a > sector. Files are stored in contiguous blocks and cannot grow in size.
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< a name = "l6" > < / a >
< a name = "l7" > < / a > #< / span > < span class = cF1 > define< / span > < span class = cF0 > < / span > < span class = cF3 > CDIR_FILENAME_LEN< / span > < span class = cF0 > < / span > < span class = cFE > 38< / span > < span class = cF0 > < / span > < span class = cF2 > //Must include terminator zero< / span > < span class = cF0 >
< a name = "l8" > < / a >
< a name = "l9" > < / a > The following bit field shows valid < / span > < span class = cFE > 8< / span > < span class = cF0 > -Bit ASCII filename characters.
< a name = "l10" > < / a >
< a name = "l11" > < / a > < / span > < span class = cF9 > U32< / span > < span class = cF0 > < / span > < span class = cFB > char_bmp_filename< / span > < span class = cF0 > [< / span > < span class = cFE > 8< / span > < span class = cF0 > ] = {< / span > < span class = cFE > 0x0000000< / span > < span class = cF0 > , < / span > < span class = cFE > 0x03FF73FB< / span > < span class = cF0 > , < / span > < span class = cFE > 0xEFFFFFFF< / span > < span class = cF0 > , < / span > < span class = cFE > 0x2FFFFFFF< / span > < span class = cF0 > , < / span > < span class = cFE > 0xFFFFFFFF< / span > < span class = cF0 > , < / span > < span class = cFE > 0xFFFFFFFF< / span > < span class = cF0 > , < / span > < span class = cFE > 0xFFFFFFFF< / span > < span class = cF0 > , < / span > < span class = cFE > 0xFFFFFFFF< / span > < span class = cF0 > };
< a name = "l12" > < / a >
< a name = "l13" > < / a > < / span > < span class = cF1 > public< / span > < span class = cF0 > < / span > < span class = cF1 > class< / span > < span class = cF0 > < / span > < span class = cF9 > CDirEntry< / span > < span class = cF0 > < / span > < span class = cF2 > //64-byte fixed-size< / span > < span class = cF0 >
< a name = "l14" > < / a > {
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< a name = "l15" > < / a > < / span > < span class = cF9 > U16< / span > < span class = cF0 > attr; < / span > < span class = cF2 > //See < / span > < a href = "https://zeal-operating-system.github.io/ZealOS/Kernel/KernelA.HH.html#l3181" > < span class = cF4 > RS_ATTR_DIR< / span > < / a > < span class = cF2 > .< / span > < span class = cF0 > < / span > < span class = cF2 > Terry wanted to change these.< / span > < span class = cF0 >
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< a name = "l16" > < / a > < / span > < span class = cF1 > U8< / span > < span class = cF0 > name[< / span > < span class = cF3 > CDIR_FILENAME_LEN< / span > < span class = cF0 > ]; < / span > < span class = cF2 > //See < / span > < a href = "https://zeal-operating-system.github.io/ZealOS/Kernel/StrA.CC.html#l336" > < span class = cF4 > char_bmp_filename< / span > < / a > < span class = cF2 > , < / span > < a href = "https://zeal-operating-system.github.io/ZealOS/Kernel/BlkDev/DiskStrA.CC.html#l278" > < span class = cF4 > FileNameCheck< / span > < / a > < span class = cF0 >
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< a name = "l17" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > clus; < / span > < span class = cF7 > (blk)< / span > < span class = cF0 > < / span > < span class = cF2 > //One sector per clus.< / span > < span class = cF0 >
< a name = "l18" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > size; < / span > < span class = cF2 > //In bytes< / span > < span class = cF0 >
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< a name = "l19" > < / a > < / span > < span class = cF9 > CDate< / span > < span class = cF0 > datetime; < / span > < span class = cF2 > //See < / span > < a href = "https://zeal-operating-system.github.io/ZealOS/Doc/TimeDate.DD.html#l1" > < span class = cF4 > DateTime< / span > < / a > < span class = cF2 > , < / span > < a href = "https://zeal-operating-system.github.io/ZealOS/Kernel/KDate.CC.html#l1" > < span class = cF4 > Implementation of DateTime< / span > < / a > < span class = cF0 >
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< a name = "l20" > < / a > };
< a name = "l21" > < / a >
< a name = "l22" > < / a > < / span > < span class = cF1 > public< / span > < span class = cF0 > < / span > < span class = cF1 > class< / span > < span class = cF0 > < / span > < span class = cF9 > CRedSeaBoot< / span > < span class = cF0 > < / span > < span class = cF2 > //RedSea is type FAT32 in partition table to fool BIOS.< / span > < span class = cF0 >
< a name = "l23" > < / a > {
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< a name = "l24" > < / a > < / span > < span class = cF1 > U8< / span > < span class = cF0 > jump_and_nop[< / span > < span class = cFE > 3< / span > < span class = cF0 > ];
< a name = "l25" > < / a > < / span > < span class = cF1 > U8< / span > < span class = cF0 > signature, reserved[< / span > < span class = cFE > 4< / span > < span class = cF0 > ]; < / span > < span class = cF2 > //MBR_PT_REDSEA=0x88. Distinguish from real FAT32.< / span > < span class = cF0 >
< a name = "l26" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > drv_offset; < / span > < span class = cF2 > //For CD/DVD image copy.< / span > < span class = cF0 >
< a name = "l27" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > sects;
< a name = "l28" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > root_clus; < / span > < span class = cF7 > (root_blk)< / span > < span class = cF0 >
< a name = "l29" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > bitmap_sects;
< a name = "l30" > < / a > < / span > < span class = cF9 > I64< / span > < span class = cF0 > unique_id;
< a name = "l31" > < / a > < / span > < span class = cF1 > U8< / span > < span class = cF0 > code[< / span > < span class = cFE > 462< / span > < span class = cF0 > ];
< a name = "l32" > < / a > < / span > < span class = cF9 > U16< / span > < span class = cF0 > signature2; < / span > < span class = cF2 > //0xAA55< / span > < span class = cF0 >
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< a name = "l33" > < / a > };
< a name = "l34" > < / a >
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< a name = "l35" > < / a > See < / span > < a href = "https://zeal-operating-system.github.io/ZealOS/Kernel/BlkDev/FileSysRedSea.CC.html#l1" > < span class = cF4 > ::/Kernel/BlkDev/FileSysRedSea.CC< / span > < / a > < span class = cF0 > and < / span > < a href = "https://zeal-operating-system.github.io/ZealOS/System/Boot/DiskISORedSea.CC.html#l1" > < span class = cF4 > ::/System/Boot/DiskISORedSea.CC< / span > < / a > < span class = cF0 > .
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< a name = "l36" > < / a >
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< a name = "l37" > < / a > To replace ISO9660, make hard-drive partition image of a measured size and copy onto a CD/DVD starting at about sector 20,
< a name = "l38" > < / a > with EL TORITO booting. 512-byte sectors will be placed on top of 2048-byte CD/DCD sectors, so there will be four blocks per
< a name = "l39" > < / a > CD/DVD sector.
< a name = "l40" > < / a >
< a name = "l41" > < / a > RedSea file system has no bad block table and no redundant allocation table.
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< a name = "l42" > < / a >
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< a name = "l43" > < / a > See < / span > < a href = "https://zeal-operating-system.github.io/ZealOS/Doc/BlkChain.DD.html#l1" > < span class = cF4 > Block Chain< / span > < / a > < span class = cF0 > for RedSea allocation bitmap discussion.
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< a name = "l44" > < / a >
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< a name = "l45" > < / a > See < / span > < a href = "https://zeal-operating-system.github.io/ZealOS/Doc/Reliability.DD.html#l1" > < span class = cF4 > Reliability< / span > < / a > < span class = cF0 > for RedSea reliability discussion.
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