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| author | Stefan Metzmacher <metze@samba.org> | 2012-09-21 22:54:26 +0200 |
|---|---|---|
| committer | Stefan Metzmacher <metze@samba.org> | 2012-09-22 04:31:06 +0200 |
| commit | eacdd9f730c09bc59e3906e4f2eff6b8b3051169 (patch) | |
| tree | e3a28c4214a1d64d4e4528e901d159d764016eb4 | |
| parent | cc93a3004e1f7a38e7519ecd124a1ce6a21ffe1c (diff) | |
| download | samba-eacdd9f730c09bc59e3906e4f2eff6b8b3051169.tar.gz samba-eacdd9f730c09bc59e3906e4f2eff6b8b3051169.tar.bz2 samba-eacdd9f730c09bc59e3906e4f2eff6b8b3051169.zip | |
lib/tsocket: fix receiving of udp packets from 0 bytes (bug #9184)
It's possible for a client to send 0 bytes in a UDP packet,
we need still need to call recvfrom() and skip the invalid
packet at a higher level. Otherwise the kernel receive queue
is blocked.
metze
| -rw-r--r-- | lib/tsocket/tsocket_bsd.c | 5 |
1 files changed, 1 insertions, 4 deletions
diff --git a/lib/tsocket/tsocket_bsd.c b/lib/tsocket/tsocket_bsd.c index 9e80065227..d5721b4d94 100644 --- a/lib/tsocket/tsocket_bsd.c +++ b/lib/tsocket/tsocket_bsd.c @@ -876,10 +876,6 @@ static void tdgram_bsd_recvfrom_handler(void *private_data) bool retry; ret = tsocket_bsd_pending(bsds->fd); - if (ret == 0) { - /* retry later */ - return; - } err = tsocket_bsd_error_from_errno(ret, errno, &retry); if (retry) { /* retry later */ @@ -889,6 +885,7 @@ static void tdgram_bsd_recvfrom_handler(void *private_data) return; } + /* note that 'ret' can be 0 here */ state->buf = talloc_array(state, uint8_t, ret); if (tevent_req_nomem(state->buf, req)) { return; |