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restart: range 60..64 no restart, document all the exits

This commit is contained in:
Hannes Mehnert 2019-10-14 11:05:22 +02:00
parent a579a8e143
commit 5b187999f1
1 changed files with 24 additions and 4 deletions
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28
src/vmm_core.ml
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@ -331,11 +331,31 @@ let should_restart config name = function
false false
| `Exit i -> | `Exit i ->
(* results (and default behaviour) -- solo5-exit allows an arbitrary int (* results (and default behaviour) -- solo5-exit allows an arbitrary int
from sysexits(3), bash tutorial (appendix E), OCaml runtime, solo5:
0 normal exit (i.e. teardown) -> restart 0 normal exit (i.e. teardown) -> restart
1 solo5 internal error (bad image, bad manigest) -> no restart, never 1 solo5 internal error (bad image, bad manifest) -> no restart, never
2 ocaml exceptions (out of memory et al) -> restart 2 ocaml exceptions (out of memory et al) -> restart
64..70 -> no restart (soon to be used by unikernel command line parsing) 60 61 62 (unused, not reserved) -> no restart, never
255 solo5-abort -> soon (OCaml 4.10) fatal error (out of memory) -> restart *) 63 functoria-runtime help/version -> no restart, never
64 argument parse error - no restart, never
65 (sysexits, unused) data error
66 (sysexits, unused) noinput
67 (sysexits, unused) nouser
68 (sysexits, unused) nohost
69 (sysexits, unused) unavailable
70 (sysexits, unused) software
71 (sysexits, unused) oserr
72 (sysexits, unused) osfile
73 (sysexits, unused) cantcreat
74 (sysexits, unused) ioerr
75 (sysexits, unused) tempfail
76 (sysexits, unused) protocol
77 (sysexits, unused) noperm
78 (sysexits, unused) config
126 (bash, unused) command invoked cannot execute
127 (bash, unused) command not found
128+n (bash, unused) fatal error signal n
255 solo5-abort -> OCaml 4.10: fatal error (instead of 2) -> restart *)
let opt_mem i = let opt_mem i =
match config.Unikernel.fail_behaviour with match config.Unikernel.fail_behaviour with
| `Quit -> assert false | `Quit -> assert false
@ -347,7 +367,7 @@ let should_restart config name = function
Logs.warn (fun m -> m "unikernel %a solo5 exit failure (1)" Logs.warn (fun m -> m "unikernel %a solo5 exit failure (1)"
Name.pp name); Name.pp name);
false false
| 64 | 65 | 66 | 67 | 68 | 69 | 70 -> | 60 | 61 | 62 | 63 | 64 ->
Logs.warn (fun m -> m "unikernel %a exited %d, not restarting" Logs.warn (fun m -> m "unikernel %a exited %d, not restarting"
Name.pp name i); Name.pp name i);
false false