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| author | Rob Vermaas <rob.vermaas@gmail.com> | 2011-01-19 09:06:12 +0000 |
|---|---|---|
| committer | Rob Vermaas <rob.vermaas@gmail.com> | 2011-01-19 09:06:12 +0000 |
| commit | ba233767187878759d779da281c9baf8bc86272d (patch) | |
| tree | 1131de9ff1b6518eea0f5322eaa31564fae10b24 /pkgs/build-support/vm/default.nix | |
| parent | a4877e2d33c9a137b2f536327823c642b78c1343 (diff) | |
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added vm function to extract some filesystem
svn path=/nixpkgs/trunk/; revision=25622
Diffstat (limited to 'pkgs/build-support/vm/default.nix')
| -rw-r--r-- | pkgs/build-support/vm/default.nix | 43 |
1 files changed, 43 insertions, 0 deletions
diff --git a/pkgs/build-support/vm/default.nix b/pkgs/build-support/vm/default.nix index 4e63d8082c3..3d8d756e977 100644 --- a/pkgs/build-support/vm/default.nix +++ b/pkgs/build-support/vm/default.nix @@ -342,6 +342,49 @@ rec { QEMU_OPTS = "-m ${toString (if attrs ? memSize then attrs.memSize else 256)}"; }); + extractFs = {file, fs ? null} : + with pkgs; runInLinuxVM ( + stdenv.mkDerivation { + name = "extract-file"; + buildInputs = [utillinuxng]; + buildCommand = '' + ln -s ${linux}/lib /lib + ${module_init_tools}/sbin/modprobe loop + ${module_init_tools}/sbin/modprobe ext4 + ${module_init_tools}/sbin/modprobe iso9660 + mknod /dev/loop0 b 7 0 + + ensureDir $out + ensureDir tmp + mount -o loop ${lib.optionalString (fs != null) "-t ${fs} "}${file} tmp + cp -R tmp/* $out/ + ''; + }); + + extractMTDfs = {file, fs ? null} : + with pkgs; runInLinuxVM ( + stdenv.mkDerivation { + name = "extract-file-mtd"; + buildInputs = [utillinuxng mtdutils]; + buildCommand = '' + ln -s ${linux}/lib /lib + ${module_init_tools}/sbin/modprobe mtd + ${module_init_tools}/sbin/modprobe mtdram total_size=65536 + ${module_init_tools}/sbin/modprobe mtdchar + ${module_init_tools}/sbin/modprobe mtdblock + ${module_init_tools}/sbin/modprobe jffs2 + mknod /dev/mtd0 c 90 0 + mknod /dev/mtdblock0 b 31 0 + + ensureDir $out + ensureDir tmp + + dd if=${file} of=/dev/mtd0 + mount ${lib.optionalString (fs != null) "-t ${fs} "}/dev/mtdblock0 tmp + + cp -R tmp/* $out/ + ''; + }); qemuCommandGeneric = '' ${kvm}/bin/qemu-system-x86_64 \ |