Hi Anders Widell,
Correction, I am using Linux kernel 3.0.13-0.27
uname -r
3.0.13-0.27-default
-AVM
On 11/21/2016 11:16 AM, A V Mahesh wrote:
> Hi Anders Widell,
>
> It seems SOCK_CLOEXEC is unsupported on Linux kernel older than 2.6.27,
> for example I am currently using :
>
> # uname -r
> 2.6.18-308.1.1.el5
>
> It looks EINVAL is what socket returns if it does not support
> SOCK_CLOEXEC, may be we need to do
> ` flags = fcntl(tcp_cb->DBSRsock, F_GETFD, 0);` in else case of
> SOCK_CLOEXEC is unsupported on Linux kernel,
> can you please cross check.
>
> -AVMC
>
>
> On 11/10/2016 4:58 PM, Anders Widell wrote:
>> osaf/libs/core/mds/mds_dt_tcp.c | 23 +++++++-------------
>> osaf/libs/core/mds/mds_dt_tipc.c | 43
>> ++++++++-------------------------------
>> 2 files changed, 17 insertions(+), 49 deletions(-)
>>
>>
>> To avoid a potential race between fcntl(FD_CLOEXEC) in one thread and exec()
>> in
>> another thread, use the SOCK_CLOEXEC flag when creating sockets.
>>
>> diff --git a/osaf/libs/core/mds/mds_dt_tcp.c
>> b/osaf/libs/core/mds/mds_dt_tcp.c
>> --- a/osaf/libs/core/mds/mds_dt_tcp.c
>> +++ b/osaf/libs/core/mds/mds_dt_tcp.c
>> @@ -38,6 +38,13 @@
>> #include <arpa/inet.h>
>> #include <configmake.h>
>>
>> +#ifndef SOCK_CLOEXEC
>> +enum {
>> + SOCK_CLOEXEC = 0x80000
>> +};
>> +#define SOCK_CLOEXEC SOCK_CLOEXEC
>> +#endif
>> +
>> #define MDS_MDTM_SUN_PATH 255
>> #define MDS_MDTM_CONNECT_PATH PKGLOCALSTATEDIR "/osaf_dtm_intra_server"
>>
>> @@ -81,7 +88,6 @@ uint32_t mdtm_process_recv_events_tcp(vo
>> */
>> uint32_t mds_mdtm_init_tcp(NODE_ID nodeid, uint32_t *mds_tcp_ref)
>> {
>> - uint32_t flags;
>> uint32_t sndbuf_size = 0; /* Send buffer size */
>> uint32_t rcvbuf_size = 0; /* Receive buffer size */
>> socklen_t optlen; /* Option length */
>> @@ -125,7 +131,7 @@ uint32_t mds_mdtm_init_tcp(NODE_ID nodei
>>
>> /* Create the sockets required for Binding, Send, receive and Discovery
>> */
>>
>> - tcp_cb->DBSRsock = socket(mds_socket_domain, SOCK_STREAM|SOCK_CLOEXEC,
>> 0);
>> + tcp_cb->DBSRsock = socket(mds_socket_domain, SOCK_STREAM |
>> SOCK_CLOEXEC, 0);
>> if (tcp_cb->DBSRsock < 0) {
>> syslog(LOG_ERR, "MDTM:TCP DBSRsock Socket creation failed in
>> MDTM_INIT err :%s", strerror(errno));
>> return NCSCC_RC_FAILURE;
>> @@ -177,19 +183,6 @@ uint32_t mds_mdtm_init_tcp(NODE_ID nodei
>> return NCSCC_RC_FAILURE;
>> }
>>
>> - flags = fcntl(tcp_cb->DBSRsock, F_GETFD, 0);
>> - if ((flags < 0) || (flags > 1)) {
>> - syslog(LOG_ERR, "MDTM:TCP Unable to get the CLOEXEC Flag on
>> DBSRsock err :%s", strerror(errno));
>> - close(tcp_cb->DBSRsock);
>> - return NCSCC_RC_FAILURE;
>> - } else {
>> - if (fcntl(tcp_cb->DBSRsock, F_SETFD, (flags | FD_CLOEXEC)) ==
>> (-1)) {
>> - syslog(LOG_ERR, "MDTM:TCP Unable to set the CLOEXEC
>> Flag on DBSRsock err :%s", strerror(errno));
>> - close(tcp_cb->DBSRsock);
>> - return NCSCC_RC_FAILURE;
>> - }
>> - }
>> -
>> tcp_cb->adest = ((uint64_t)(nodeid)) << 32;
>> tcp_cb->adest |= mdtm_pid;
>> tcp_cb->node_id = nodeid;
>> diff --git a/osaf/libs/core/mds/mds_dt_tipc.c
>> b/osaf/libs/core/mds/mds_dt_tipc.c
>> --- a/osaf/libs/core/mds/mds_dt_tipc.c
>> +++ b/osaf/libs/core/mds/mds_dt_tipc.c
>> @@ -45,6 +45,13 @@
>> #include "mds_core.h"
>> #include "osaf_utility.h"
>>
>> +#ifndef SOCK_CLOEXEC
>> +enum {
>> + SOCK_CLOEXEC = 0x80000
>> +};
>> +#define SOCK_CLOEXEC SOCK_CLOEXEC
>> +#endif
>> +
>> /*
>> tipc_id will be <NODE_ID,RANDOM NUMBER>
>> */
>> @@ -151,7 +158,6 @@ uint32_t mdtm_global_frag_num;
>> uint32_t mdtm_tipc_init(NODE_ID nodeid, uint32_t *mds_tipc_ref)
>> {
>> uint32_t tipc_node_id = 0;
>> - int flags;
>>
>> NCS_PATRICIA_PARAMS pat_tree_params;
>>
>> @@ -176,48 +182,17 @@ uint32_t mdtm_tipc_init(NODE_ID nodeid,
>>
>> /* Create the sockets required for Binding, Send, receive and Discovery
>> */
>>
>> - tipc_cb.Dsock = socket(AF_TIPC, SOCK_SEQPACKET, 0);
>> + tipc_cb.Dsock = socket(AF_TIPC, SOCK_SEQPACKET | SOCK_CLOEXEC, 0);
>> if (tipc_cb.Dsock < 0) {
>> syslog(LOG_ERR, "MDTM:TIPC Dsock Socket creation failed in
>> MDTM_INIT err :%s", strerror(errno));
>> return NCSCC_RC_FAILURE;
>> }
>> - tipc_cb.BSRsock = socket(AF_TIPC, SOCK_RDM, 0);
>> + tipc_cb.BSRsock = socket(AF_TIPC, SOCK_RDM | SOCK_CLOEXEC, 0);
>> if (tipc_cb.BSRsock < 0) {
>> syslog(LOG_ERR, "MDTM:TIPC BSRsock Socket creation failed in
>> MDTM_INIT err :%s", strerror(errno));
>> return NCSCC_RC_FAILURE;
>> }
>>
>> - flags = fcntl(tipc_cb.Dsock, F_GETFD, 0);
>> - if ((flags < 0) || (flags > 1)) {
>> - syslog(LOG_ERR, "MDTM:TIPC Unable to get the CLOEXEC Flag on
>> Dsock err :%s", strerror(errno));
>> - close(tipc_cb.Dsock);
>> - close(tipc_cb.BSRsock);
>> - return NCSCC_RC_FAILURE;
>> - } else {
>> - if (fcntl(tipc_cb.Dsock, F_SETFD, (flags | FD_CLOEXEC)) ==
>> (-1)) {
>> - syslog(LOG_ERR, "MDTM:TIPC Unable to set the CLOEXEC
>> Flag on Dsock err :%s", strerror(errno));
>> - close(tipc_cb.Dsock);
>> - close(tipc_cb.BSRsock);
>> - return NCSCC_RC_FAILURE;
>> - }
>> - }
>> -
>> - flags = fcntl(tipc_cb.BSRsock, F_GETFD, 0);
>> - if ((flags < 0) || (flags > 1)) {
>> - syslog(LOG_ERR, "MDTM:TIPC Unable to get the CLOEXEC Flag on
>> BSRsock err :%s", strerror(errno));
>> - close(tipc_cb.Dsock);
>> - close(tipc_cb.BSRsock);
>> - return NCSCC_RC_FAILURE;
>> - } else {
>> - if (fcntl(tipc_cb.BSRsock, F_SETFD, (flags | FD_CLOEXEC)) ==
>> (-1)) {
>> - syslog(LOG_ERR, "MDTM:TIPC Unable to set the CLOEXEC
>> Flag on BSRsock err :%s", strerror(errno));
>> - close(tipc_cb.Dsock);
>> - close(tipc_cb.BSRsock);
>> - return NCSCC_RC_FAILURE;
>> - }
>> - }
>> - /* End Fix */
>> -
>> /* Code for getting the self tipc random number */
>> memset(&addr, 0, sizeof(addr));
>> if (0 > getsockname(tipc_cb.BSRsock, (struct sockaddr *)&addr, &sz)) {
>
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