This case is no-op and no error is returned.
See fs/splice.c vmsplice syscall which contains:
if (unlikely(nr_segs > UIO_MAXIOV))
return -EINVAL;
else if (unlikely(!nr_segs))
return 0;
and looking at the git log suggests that this snipped was always there.
Signed-off-by: Cyril Hrubis <chrubis@xxxxxxx>
---
man2/vmsplice.2 | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/man2/vmsplice.2 b/man2/vmsplice.2
index 35ab07f..a9ad786 100644
--- a/man2/vmsplice.2
+++ b/man2/vmsplice.2
@@ -133,7 +133,7 @@ either not valid, or doesn't refer to a pipe.
.TP
.B EINVAL
.I nr_segs
-is 0 or greater than
+is greater than
.BR IOV_MAX ;
or memory not aligned if
.B SPLICE_F_GIFT
--
1.8.5.5
--
Cyril Hrubis
chrubis@xxxxxxx
--
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