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cosmetics

This commit is contained in:
Hannes Mehnert 2019-10-27 19:47:37 +01:00
parent 1d33c17b53
commit 01f6983325
1 changed files with 22 additions and 21 deletions
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43
src/vmm_unix.ml
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@ -17,10 +17,10 @@ open Rresult
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
---------------------------------------------------------------------------*)
let pp_unix_error ppf e = Fmt.string ppf (Unix.error_message e)
let pp_unix_err ppf e = Fmt.string ppf (Unix.error_message e)
let err_empty_line = "no command, empty command line"
let err_file f e = R.error_msgf "%a: %a" Fpath.pp f pp_unix_error e
let err_file f e = R.error_msgf "%a: %a" Fpath.pp f pp_unix_err e
let rec openfile fn mode perm = try Unix.openfile fn mode perm with
| Unix.Unix_error (Unix.EINTR, _, _) -> openfile fn mode perm
@ -119,32 +119,33 @@ let create_tap bridge =
Bos.OS.Cmd.run Bos.Cmd.(v "brctl" % "addif" % bridge % tap) >>= fun () ->
Ok tap
let destroy_tap tapname =
match Lazy.force uname with
| FreeBSD ->
Bos.OS.Cmd.run Bos.Cmd.(v "ifconfig" % tapname % "destroy")
| Linux ->
Bos.OS.Cmd.run Bos.Cmd.(v "ip" % "tuntap" % "del" % "dev" % tapname % "mode" % "tap")
let destroy_tap tap =
let cmd =
match Lazy.force uname with
| FreeBSD -> Bos.Cmd.(v "ifconfig" % tap % "destroy")
| Linux -> Bos.Cmd.(v "ip" % "tuntap" % "del" % "dev" % tap % "mode" % "tap")
in
Bos.OS.Cmd.run cmd
let prepare name vm =
(match vm.Unikernel.typ with
| `Solo5 ->
if vm.Unikernel.compressed then
begin match Vmm_compress.uncompress (Cstruct.to_string vm.Unikernel.image) with
| Ok blob -> Ok (Cstruct.of_string blob)
| Error () -> Error (`Msg "failed to uncompress")
end
match Vmm_compress.uncompress (Cstruct.to_string vm.Unikernel.image) with
| Ok blob -> Ok (Cstruct.of_string blob)
| Error () -> Error (`Msg "failed to uncompress")
else
Ok vm.Unikernel.image) >>= fun image ->
let fifo = Name.fifo_file name in
(match fifo_exists fifo with
| Ok true -> Ok ()
| Ok false -> Error (`Msg ("file " ^ Fpath.to_string fifo ^ " exists and is not a fifo"))
| Error _ ->
try Ok (mkfifo fifo) with
| Unix.Unix_error (e, f, _) ->
Logs.err (fun m -> m "%a error in %s: %a" Fpath.pp fifo f pp_unix_error e) ;
Error (`Msg "while creating fifo")) >>= fun () ->
begin match fifo_exists fifo with
| Ok true -> Ok ()
| Ok false -> R.error_msgf "file %a exists and is not a fifo" Fpath.pp fifo
| Error _ ->
try Ok (mkfifo fifo) with
| Unix.Unix_error (e, f, _) ->
Logs.err (fun m -> m "%a error in %s: %a" Fpath.pp fifo f pp_unix_err e);
Error (`Msg "while creating fifo")
end >>= fun () ->
List.fold_left (fun acc b ->
acc >>= fun acc ->
create_tap b >>= fun tap ->
@ -207,7 +208,7 @@ let exec name config bridge_taps blocks =
with
Unix.Unix_error (e, _, _) ->
close_no_err stdout;
R.error_msgf "cmd %a exits: %a" Bos.Cmd.pp cmd pp_unix_error e
R.error_msgf "cmd %a exits: %a" Bos.Cmd.pp cmd pp_unix_err e
let destroy vm = Unix.kill vm.Unikernel.pid Sys.sigterm