51 lines
1.7 KiB
Nim
51 lines
1.7 KiB
Nim
# SPDX-FileCopyrightText: ☭ Emery Hemingway
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# SPDX-License-Identifier: Unlicense
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## An actor for Linux file-system mounting.
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when not defined(linux):
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{.error: "this component only tested for Linux".}
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import std/oserrors
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import preserves
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import syndicate
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import ./schema/mountpoints
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type BootArgs {.preservesDictionary.} = object
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dataspace: Cap
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proc mount(source, target, fsType: cstring; flags: culong; data: pointer): cint {.importc, header: "<sys/mount.h>".}
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## `mount(2)`
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proc umount(target: cstring): cint {.importc, header: "<sys/mount.h>".}
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## `umount(2)`
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proc spawnMountActor*(turn: var Turn; ds: Cap): Actor {.discardable.} =
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spawnActor(turn, "mount_actor") do (turn: var Turn):
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let
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targetPat = ?Observe(pattern: !Mountpoint) ?? { 1: grabLit() }
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sourcePat = ?Observe(pattern: !Mountpoint) ?? { 0: grabLit(), 2: grabLit() }
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during(turn, ds, ?:BootArgs) do (ds: Cap):
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during(turn, ds, targetPat) do (target: string):
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during(turn, ds, sourcePat) do (source: string, fsType: string):
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var mountpoint = Mountpoint(
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source: source,
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target: target,
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`type`: fsType,
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)
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var rc = mount(source, target, fsType, 0, nil)
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if rc == 0:
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mountpoint.status = Status(orKind: StatusKind.success)
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else:
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mountpoint.status = Status(orKind: StatusKind.Failure)
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mountpoint.status.failure.msg = osErrorMsg(osLastError())
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discard publish(turn, ds, mountpoint)
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do:
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discard umount(target)
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when isMainModule:
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import syndicate/relays
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runActor("main") do (turn: var Turn):
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resolveEnvironment(turn) do (turn: var Turn; ds: Cap):
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discard spawnMountActor(turn, ds)
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