diff options
Diffstat (limited to 'sys-fs/quota/files/quota-4.04-Listen-on-a-TCP-socket.patch')
| -rw-r--r-- | sys-fs/quota/files/quota-4.04-Listen-on-a-TCP-socket.patch | 77 |
1 files changed, 77 insertions, 0 deletions
diff --git a/sys-fs/quota/files/quota-4.04-Listen-on-a-TCP-socket.patch b/sys-fs/quota/files/quota-4.04-Listen-on-a-TCP-socket.patch new file mode 100644 index 000000000000..cf1bd4aad32f --- /dev/null +++ b/sys-fs/quota/files/quota-4.04-Listen-on-a-TCP-socket.patch @@ -0,0 +1,77 @@ +From 31ecd29b3b3f51145fd78f63087c10e9fcadf999 Mon Sep 17 00:00:00 2001 +From: Steve Dickson <steved@redhat.com> +Date: Tue, 22 May 2018 12:41:59 +0200 +Subject: [PATCH] Listen on a TCP socket +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +rpc.rquotad spins in libtirpc's rendezvous_request() on accepting TCP +connections because the polled TCP socket is not listening: + +poll([{fd=4, events=POLLIN|POLLPRI|POLLRDNORM|POLLRDBAND}, {fd=5, + events=POLLIN|POLLPRI|POLLRDNORM|POLLRDBAND}, {fd=6, + events=POLLIN|POLLPRI|POLLRDNORM|POLLRDBAND}, {fd=7, + events=POLLIN|POLLPRI|POLLRDNORM|POLLRDBAND}], 4, -1) = 2 ([{fd=5, + revents=POLLHUP}, {fd=7, revents=POLLHUP}]) +accept(5, 0x7ffe61698700, [128]) = -1 EINVAL (Invalid argument) +accept(7, 0x7ffe61698700, [128]) = -1 EINVAL (Invalid argument) + +The polled descriptors are: + +rpc.rquot 21981 root 4u IPv4 80449159 0t0 UDP *:rquotad +rpc.rquot 21981 root 5u sock 0,9 0t0 80449162 protocol: TCP +rpc.rquot 21981 root 6u IPv6 80449165 0t0 UDP *:rquotad +rpc.rquot 21981 root 7u sock 0,9 0t0 80449168 protocol: TCPv6 + +That results into a high CPU usage just after staring rpc.rquotad +process. + +This patch adds a listen() call to svc_create_sock() +routine which is needed with libtirpc version of svc_tli_create() +as well as a needed IPv6 setsockopt(). + +Signed-off-by: Petr Písař <ppisar@redhat.com> +--- + svc_socket.c | 18 ++++++++++++++++++ + 1 file changed, 18 insertions(+) + +diff --git a/svc_socket.c b/svc_socket.c +index 8a44604..d2e3abf 100644 +--- a/svc_socket.c ++++ b/svc_socket.c +@@ -118,6 +118,15 @@ static int svc_create_sock(struct addrinfo *ai) + return -1; + } + ++ if (ai->ai_family == AF_INET6) { ++ if (setsockopt(fd, IPPROTO_IPV6, IPV6_V6ONLY, ++ &optval, sizeof(optval)) < 0) { ++ errstr(_("Cannot set IPv6 socket options: %s\n"), strerror(errno)); ++ close(fd); ++ return -1; ++ } ++ } ++ + if (setsockopt(fd, SOL_SOCKET, SO_REUSEADDR, &optval, sizeof(optval)) < 0) { + errstr(_("Cannot set socket options: %s\n"), strerror(errno)); + close(fd); +@@ -129,6 +138,15 @@ static int svc_create_sock(struct addrinfo *ai) + close(fd); + return -1; + } ++ ++ if (ai->ai_protocol == IPPROTO_TCP) { ++ if (listen(fd, SOMAXCONN) < 0) { ++ errstr(_("Cannot listen to address: %s\n"), strerror(errno)); ++ close(fd); ++ return -1; ++ } ++ } ++ + return fd; + } + +-- +2.14.3 + |