uroot

type Commands struct {
	// Builder is the Go compiler mode.
	Builder builder.Builder

	// Packages are the Go commands to include (compiled or otherwise) and
	// add to the archive.
	//
	// Currently allowed formats:
	//
	//   - package imports; e.g. github.com/u-root/u-root/cmds/ls
	//   - globs of package imports; e.g. github.com/u-root/u-root/cmds/*
	//   - paths to package directories; e.g. $GOPATH/src/github.com/u-root/u-root/cmds/ls
	//   - globs of paths to package directories; e.g. ./cmds/*
	//
	// Directories may be relative or absolute, with or without globs.
	// Globs are resolved using filepath.Glob.
	Packages []string

	// BinaryDir is the directory in which the resulting binaries are
	// placed inside the initramfs.
	//
	// BinaryDir may be empty, in which case Builder.DefaultBinaryDir()
	// will be used.
	BinaryDir string
}

type Opts struct {
	// Env is the Golang build environment (GOOS, GOARCH, etc).
	Env golang.Environ

	// Commands specify packages to build using a specific builder.
	//
	// E.g. the following will build 'ls' and 'ip' in busybox mode, but
	// 'cd' and 'cat' as separate binaries. 'cd', 'cat', 'bb', and symlinks
	// from 'ls' and 'ip' will be added to the final initramfs.
	//
	//   []Commands{
	//     Commands{
	//       Builder: builder.BusyBox,
	//       Packages: []string{
	//         "github.com/u-root/u-root/cmds/ls",
	//         "github.com/u-root/u-root/cmds/ip",
	//       },
	//     },
	//     Commands{
	//       Builder: builder.Binary,
	//       Packages: []string{
	//         "github.com/u-root/u-root/cmds/cd",
	//         "github.com/u-root/u-root/cmds/cat",
	//       },
	//     },
	//   }
	Commands []Commands

	// TempDir is a temporary directory for builders to store files in.
	TempDir string

	// ExtraFiles are files to add to the archive in addition to the Go
	// packages.
	//
	// Shared library dependencies will automatically also be added to the
	// archive using ldd.
	//
	// The following formats are allowed in the list:
	//
	//   - "/home/chrisko/foo:root/bar" adds the file from absolute path
	//     /home/chrisko/foo on the host at the relative root/bar in the
	//     archive.
	//   - "/home/foo" is equivalent to "/home/foo:home/foo".
	ExtraFiles []string

	// OutputFile is the archive output file.
	OutputFile initramfs.Writer

	// BaseArchive is an existing initramfs to include in the resulting
	// initramfs.
	BaseArchive initramfs.Reader

	// UseExistingInit determines whether the existing init from
	// BaseArchive should be used.
	//
	// If this is false, the "init" from BaseArchive will be renamed to
	// "inito" (init-original).
	UseExistingInit bool

	// InitCmd is the name of a command to link /init to.
	//
	// This can be an absolute path or the name of a command included in
	// Commands.
	//
	// If this is empty, no init symlink will be created.
	InitCmd string

	// DefaultShell is the default shell to start after init.
	//
	// This can be an absolute path or the name of a command included in
	// Commands.
	//
	// This must be specified to have a default shell.
	DefaultShell string
}