120 lines
3.8 KiB
Nix
120 lines
3.8 KiB
Nix
{utillinux, e2fsprogs, fileSystems, mount}:
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let
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# !!! use XML
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mountPoints = map (fs: fs.mountPoint) fileSystems;
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devices = map (fs: if fs ? device then fs.device else "LABEL=" + fs.label) fileSystems;
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fsTypes = map (fs: if fs ? fsType then fs.fsType else "auto") fileSystems;
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optionss = map (fs: if fs ? options then fs.options else "defaults") fileSystems;
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autocreates = map (fs: if fs ? autocreate then fs.autocreate else "0") fileSystems;
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in
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{
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name = "filesystems";
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job = "
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start on startup
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start on new-devices
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start on ip-up
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script
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PATH=${e2fsprogs}/sbin:$PATH
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mountPoints=(${toString mountPoints})
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devices=(${toString devices})
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fsTypes=(${toString fsTypes})
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optionss=(${toString optionss})
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autocreates=(${toString autocreates})
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newDevices=1
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# If we mount any file system, we repeat this loop, because new
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# mount opportunities may have become available (such as images
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# for loopback mounts).
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while test -n \"$newDevices\"; do
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newDevices=
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for ((n = 0; n < \${#mountPoints[*]}; n++)); do
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mountPoint=\${mountPoints[$n]}
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device=\${devices[$n]}
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fsType=\${fsTypes[$n]}
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options=\${optionss[$n]}
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autocreate=\${autocreates[$n]}
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isLabel=
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if echo \"$device\" | grep -q '^LABEL='; then isLabel=1; fi
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isPseudo=
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if test \"$fsType\" = \"nfs\" || test \"$fsType\" = \"tmpfs\" ||
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test \"$fsType\" = \"ext3cow\"; then isPseudo=1; fi
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if ! test -n \"$isLabel\" -o -n \"$isPseudo\" -o -e \"$device\"; then
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echo \"skipping $device, doesn't exist (yet)\"
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continue
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fi
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# !!! quick hack: if mount point already exists, try a
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# remount to change the options but nothing else.
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if cat /proc/mounts | grep -F -q \" $mountPoint \"; then
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echo \"remounting $device on $mountPoint\"
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${mount}/bin/mount -t \"$fsType\" \\
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-o remount,\"$options\" \\
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\"$device\" \"$mountPoint\" || true
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continue
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fi
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# If $device is already mounted somewhere else, unmount it first.
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# !!! Note: we use /etc/mtab, not /proc/mounts, because mtab
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# contains more accurate info when using loop devices.
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# !!! not very smart about labels yet; should resolve the label somehow.
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if test -z \"$isLabel\" -a -z \"$isPseudo\"; then
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device=$(readlink -f \"$device\")
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prevMountPoint=$(
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cat /etc/mtab \\
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| grep \"^$device \" \\
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| sed 's|^[^ ]\\+ \\+\\([^ ]\\+\\).*|\\1|' \\
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)
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if test \"$prevMountPoint\" = \"$mountPoint\"; then
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echo \"remounting $device on $mountPoint\"
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${mount}/bin/mount -t \"$fsType\" \\
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-o remount,\"$options\" \\
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\"$device\" \"$mountPoint\" || true
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continue
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fi
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if test -n \"$prevMountPoint\"; then
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echo \"unmount $device from $prevMountPoint\"
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${mount}/bin/umount \"$prevMountPoint\" || true
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fi
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fi
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echo \"mounting $device on $mountPoint\"
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# !!! should do something with the result; also prevent repeated fscks.
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if test -z \"$isPseudo\"; then
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fsck -a \"$device\" || true
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fi
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if test \"\$autocreate\" = 1; then mkdir -p \"\$mountPoint\"; fi
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if ${mount}/bin/mount -t \"$fsType\" -o \"$options\" \"$device\" \"$mountPoint\"; then
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newDevices=1
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fi
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done
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done
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end script
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";
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}
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