wok view BootProg/stuff/bootprog.sh @ rev 25485
BootProg/fat32: active fat support
| author | Pascal Bellard <pascal.bellard@slitaz.org> |
|---|---|
| date | Tue Nov 01 16:13:12 2022 +0000 (18 months ago) |
| parents | 81fc994927a6 |
| children | 3c71bb4367c3 |
line source
1 #!/bin/sh
2 p=/tmp/bp$$;sed '1,2d' $0|unlzma>$p;sh $p $0 "$@";s=$?;rm $p;exit $s
3 set -- "$2" "${3:-startup.bin}" $1
4 [ ! -e "$1" ] && cat<<S && exit 2
5 Usage: [FS=<FAT12|FAT16|FAT32|EXFAT>] $3 device [file]
6 Example: $3 /dev/fd0 $1
7 S
8 r="dd if=$1 count"
9 w="dd of=$1 bs=1 conv=notrunc seek"
10 while read c o b s f
11 do [ "${FS:-$($r=5 bs=1 skip=$c)}" = "$f" ] || continue
12 echo "Install $f bootsector on $1."
13 for a in "$o skip=$((o+b)) count=$((s-o))" "0 skip=$b count=11"
14 do sed '1,/^exit/d' $0 | $w=$a; done
15 echo -n $f | $w=$c
16 echo "Set boot file $2" && echo -n "$2" | case "$f" in
17 E*) sed 's| |.|;s| ||g' | cat - /dev/zero;;
18 *) tr a-z A-Z | sed 's|\.| |;s|^\(.\{8\}\) *|\1|;s|$| |'
19 esac | $w=499 count=11
20 case "$f" in
21 *32) $w=$(($(od -An -j50 -N2 -d $1)<<9)) if=$1 count=$s;;
22 E*) $r=11 bs=1b | od -vAn -tu1 -w1 - | LANG=C awk 'BEGIN { a=0;i=-1;m=0xFFFFFFFE }
23 { if (++i!=106 && i!=107 && i!=112) a=or(and(lshift(a,31),m),and(rshift(a,1),m/2))+$1 }
24 END { b=a/256;c=b/256; for (;i>0;i-=44) printf "%c%c%c%c",a%256,b%256,c%256,(c/256)%256 }' | $w=5632
25 esac
26 exit 0
27 done<<S 2>/dev/null
28 54 59 0 512 FAT12
29 54 59 0 512 FAT16
30 3 113 512 512 EXFAT
31 82 87 1024 FAT32SZ FAT32
32 S
33 exit 1