Created
October 22, 2014 17:57
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Blocking read with O_NONBLOCK set? (please ignore sending xml to ssh :P)
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| dup(12) = 13 | |
| getsockname(13, {sa_family=AF_INET, sin_port=htons(46811), sin_addr=inet_addr("127.0.0.1")}, [16]) = 0 | |
| getsockopt(13, SOL_SOCKET, SO_TYPE, [1], [4]) = 0 | |
| fstat(13, {st_mode=S_IFSOCK|0777, st_size=0, ...}) = 0 | |
| getsockname(13, {sa_family=AF_INET, sin_port=htons(46811), sin_addr=inet_addr("127.0.0.1")}, [16]) = 0 | |
| getsockopt(13, SOL_SOCKET, SO_TYPE, [1], [4]) = 0 | |
| fcntl(13, F_SETFD, FD_CLOEXEC) = 0 | |
| fcntl(13, F_GETFL) = 0x802 (flags O_RDWR|O_NONBLOCK) | |
| fcntl(13, F_SETFL, O_RDWR|O_NONBLOCK) = 0 | |
| setsockopt(13, SOL_SOCKET, SO_REUSEADDR, [1], 4) = 0 | |
| setsockopt(13, SOL_SOCKET, SO_REUSEPORT, [0], 4) = 0 | |
| setsockopt(13, SOL_TCP, TCP_NODELAY, [0], 4) = 0 | |
| setsockopt(13, SOL_TCP, TCP_CORK, [0], 4) = 0 | |
| fcntl(12, F_GETFL) = 0x802 (flags O_RDWR|O_NONBLOCK) | |
| fcntl(12, F_SETFL, O_RDWR) = 0 | |
| close(12) = 0 | |
| getpeername(13, {sa_family=AF_INET, sin_port=htons(22), sin_addr=inet_addr("127.0.0.1")}, [16]) = 0 | |
| sendto(13, "<stream:stream xmlns:stream='htt"..., 133, MSG_NOSIGNAL, NULL, 0) = 133 | |
| read(13, "SSH-2.0-OpenSSH_6.6.1\r\n", 4096) = 23 | |
| read(13, <unfinished ...> | |
| +++ killed by SIGKILL +++ |
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The
read()at the end was blocking; even though O_NONBLOCK was set.(So I had to
kill -9it)Why is this happening?