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Handle ENOSPC with a partial write.

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Similar to the EPIPE case, we can return the number of bytes written before
ENOSPC was encountered. If the app tries to write more, we can return ENOSPC on
the next write.

PiperOrigin-RevId: 263041648
This commit is contained in:
Nicolas Lacasse
2019-08-12 17:41:33 -07:00
committed by gVisor bot
parent 691c2f8173
commit 9769a8eaa4
1 changed files with 4 additions and 0 deletions
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pkg/sentry/syscalls/linux/error.go
+4
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@@ -91,6 +91,10 @@ func handleIOError(t *kernel.Task, partialResult bool, err, intr error, op strin
// TODO(gvisor.dev/issue/161): In some cases SIGPIPE should
// also be sent to the application.
return nil
case syserror.ENOSPC:
// Similar to EPIPE. Return what we wrote this time, and let
// ENOSPC be returned on the next call.
return nil
case syserror.ECONNRESET:
// For TCP sendfile connections, we may have a reset. But we
// should just return n as the result.