43 lines
1.2 KiB
Bash
Executable file
43 lines
1.2 KiB
Bash
Executable file
#!/bin/bash
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# Adds a DSDT file to the initrd (if it's an initramfs)
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# first argument is the name of archive
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# second argument is the name of the file to add
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# The file will be copied as /DSDT.aml
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# 20060126: fix "Premature end of file" with some old cpio (Roland Robic)
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# 20060205: this time it should really work
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# check the arguments
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if [ $# -ne 2 ]; then
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program_name=$(basename $0)
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echo "\
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$program_name: too few arguments
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Usage: $program_name initrd-name.img DSDT-to-add.aml
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Adds a DSDT file to an initrd (in initramfs format)
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initrd-name.img: filename of the initrd in initramfs format
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DSDT-to-add.aml: filename of the DSDT file to add
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" 1>&2
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exit 1
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fi
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# we should check it's an initramfs
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tempcpio=$(mktemp -d)
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# cleanup on exit, hangup, interrupt, quit, termination
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trap 'rm -rf $tempcpio' 0 1 2 3 15
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# extract the archive
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gunzip -c "$1" > "$tempcpio"/initramfs.cpio || exit 1
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# copy the DSDT file at the root of the directory so that we can call it "/DSDT.aml"
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cp -f "$2" "$tempcpio"/DSDT.aml
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# add the file
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cd "$tempcpio"
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(echo DSDT.aml | cpio --quiet -H newc -o -A -O "$tempcpio"/initramfs.cpio) || exit 1
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cd "$OLDPWD"
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# re-compress the archive
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gzip -c "$tempcpio"/initramfs.cpio > "$1"
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