8066129445
Add a pair of services: 1. qubes.RegisterBackupLocation - called by dom0, registers what backup location (including both file and command options) can be accessed. Registered location gets an ID returned to the caller. The location (and its ID) is valid as long as the service call remains open. 2. qubes.RestoreById - called by restoring DispVM to retrieve the backup content. The service expects location ID as an argument, and then list of files/directories (separated with spaces) on the first line of stdin. This is very similar to qubes.Restore service, with exception for the archive location control. QubesOS/qubes-issues#5310
33 lines
918 B
Bash
33 lines
918 B
Bash
#!/bin/sh
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# Register backup location (path or a command) to be retrieved with qubes
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# .RestoreById service.
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# Registered location is only valid as long as this service call stays open
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set -e
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REGISTRY_DIR="$XDG_RUNTIME_DIR/qubes-backup-location"
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if ! [ -d "$REGISTRY_DIR" ]; then
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mkdir -p "$REGISTRY_DIR"
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fi
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read -r backup_location
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REGISTRY_FILE=$(mktemp "$REGISTRY_DIR/XXXXXXXX")
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PID=$$
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# this isn't perfetct, as comm field could contain spaces, but we do control
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# this value and we know it doesn't
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START_TIME=$(cut -f 22 -d ' ' /proc/$PID/stat)
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# add process id at the beginning to help verifying if it's still running;
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# record starttime too, to detect PID reuse
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printf "%d %d\n%s\n" "$PID" "$START_TIME" "$backup_location" >"$REGISTRY_FILE"
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# output registered ID to the user
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basename "$REGISTRY_FILE"
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# close stdout
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exec >&-
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# wait for stdin to close
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cat >/dev/null
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# and cleanup
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rm -f "$REGISTRY_FILE" |