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| author | Volker Lendecke <vl@samba.org> | 2015-02-16 13:26:29 +0000 |
|---|---|---|
| committer | Jeremy Allison <jra@samba.org> | 2015-02-24 17:52:09 +0100 |
| commit | 6e94f695c4cb8aabc57b5ef00073c2301fec409a (patch) | |
| tree | 0de405ec8b5819d7282445e1b93e33ae75a2dc62 /lib | |
| parent | 0a20ffb17dcc849834ccde4aa3f751bda31f8824 (diff) | |
| download | samba-6e94f695c4cb8aabc57b5ef00073c2301fec409a.tar.gz samba-6e94f695c4cb8aabc57b5ef00073c2301fec409a.tar.xz samba-6e94f695c4cb8aabc57b5ef00073c2301fec409a.zip | |
iov_buf: Add an explaining comment
Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Jeremy Allison <jra@samba.org>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/util/iov_buf.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/lib/util/iov_buf.c b/lib/util/iov_buf.c index 82a4af5323..d260b2fea8 100644 --- a/lib/util/iov_buf.c +++ b/lib/util/iov_buf.c @@ -75,6 +75,10 @@ bool iov_advance(struct iovec **iov, int *iovcnt, size_t n) /* * Skip 0-length iovec's + * + * There might be empty buffers at the end of iov. Next time we do a + * readv/writev based on this iov would give 0 transferred bytes, also + * known as EPIPE. So we need to be careful discarding them. */ while ((cnt > 0) && (v->iov_len == 0)) { |