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Added options posixmq-maxmsg and posixmq-msgsize
This commit is contained in:
Gerhard Rieger
parent
663a6bb012
commit
25d2f746d9
7 changed files with 79 additions and 10 deletions
3
CHANGES
3
CHANGES
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@ -49,6 +49,9 @@ Features:
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queue before starting to transfer data.
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Test: LINUX_POSIXMQ_FLUSH
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New options posixmq-maxmsg, posixmq-msgsize.
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Tests: POSIXMQ_MAXMSG POSIXMQ_MSGSIZE
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Building:
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Disabling certain features during configure could break build process.
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10
doc/socat.yo
10
doc/socat.yo
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@ -2168,7 +2168,7 @@ label(OPTION_NETNS)dit(bf(tt(netns=<net-namespace-name>)))
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Before opening the address it tries to switch to the named network namespace.
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After opening the address it switches back to the previous namespace.
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(link(Example with TCP forwarder)(EXAMPLE_OPTION_NETNS),
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link(example with virtual network connection)(EXAMPLE_TUN_NETNS).nl()
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link(example with virtual network connection)(EXAMPLE_TUN_NETNS)).nl()
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Only on Linux; requires root; use option tt(--experimental).nl()
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enddit()
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@ -3495,6 +3495,14 @@ label(OPTION_POSIXMQ_PRIORITY)dit(bf(tt(posixmq-priority (mq-prio))))
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label(OPTION_POSIXMQ_FLUSH)dit(bf(tt(posixmq-flush (mq-flush))))
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"Consumes" (drops) all messages currently in the queue before starting
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transfers.
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label(OPTION_POSIXMQ_MAXMSG)dit(bf(tt(posixmq-maxmsg (mq-maxmsg))))
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Sets the maxmsg parameter of the POSIX message queue when creating it.
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Note: You need root or CAP_SYS_RESOURCE to exceed the default value
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(<tt>/proc/sys/fs/mqueue/msg_default</tt>).
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label(OPTION_POSIXMQ_MSGSIZE)dit(bf(tt(posixmq-msgsize (mq-msgsize))))
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Sets the msgsize parameter of the POSIX message queue when creating it.
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Note: You need root or CAP_SYS_RESOURCE to exceed the default value
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(<tt>/proc/sys/fs/mqueue/msgsize_default</tt>).
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enddit()
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4
test.sh
4
test.sh
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@ -15106,8 +15106,8 @@ tf="$td/test$N.stdout"
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te="$td/test$N.stderr"
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tdiff="$td/test$N.diff"
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da="test$N $(date) $RANDOM"
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CMD0="$TRACE $SOCAT $opts TCP4-LISTEN:$PORT,reuseaddr EXEC:'$FILAN -s',nofork"
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CMD1="$TRACE $SOCAT $opts -t $T4 - TCP4:localhost:$PORT"
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CMD0="$TRACE $SOCAT $opts -t $T4 TCP4-LISTEN:$PORT,reuseaddr EXEC:'$FILAN -s',nofork"
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CMD1="$TRACE $SOCAT $opts -t $T8 - TCP4:localhost:$PORT"
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printf "test $F_n $TEST... " $N
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eval "$CMD0" >/dev/null 2>"${te}0" &
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pid0=$!
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@ -25,8 +25,10 @@ const struct addrdesc xioaddr_posixmq_read = { "POSIXMQ-READ", 1+XIO
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const struct addrdesc xioaddr_posixmq_receive = { "POSIXMQ-RECEIVE", 1+XIO_RDONLY, xioopen_posixmq, GROUP_FD|GROUP_NAMED|GROUP_POSIXMQ|GROUP_RETRY|GROUP_CHILD, XIO_RDONLY, XIOREAD_RECV_ONESHOT, 0 HELP(":<mqname>") };
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const struct addrdesc xioaddr_posixmq_send = { "POSIXMQ-SEND", 1+XIO_WRONLY, xioopen_posixmq, GROUP_FD|GROUP_NAMED|GROUP_POSIXMQ|GROUP_RETRY|GROUP_CHILD, XIO_WRONLY, 0, 0 HELP(":<mqname>") };
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const struct optdesc opt_posixmq_priority = { "posixmq-priority", "mq-pri", OPT_POSIXMQ_PRIORITY, GROUP_POSIXMQ, PH_INIT, TYPE_BOOL, OFUNC_OFFSET, XIO_OFFSETOF(para.posixmq.prio), XIO_SIZEOF(para.posixmq.prio), 0 };
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const struct optdesc opt_posixmq_priority = { "posixmq-priority", "mq-prio", OPT_POSIXMQ_PRIORITY, GROUP_POSIXMQ, PH_INIT, TYPE_BOOL, OFUNC_OFFSET, XIO_OFFSETOF(para.posixmq.prio), XIO_SIZEOF(para.posixmq.prio), 0 };
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const struct optdesc opt_posixmq_flush = { "posixmq-flush", "mq-flush", OPT_POSIXMQ_FLUSH, GROUP_POSIXMQ, PH_EARLY, TYPE_BOOL, OFUNC_SPEC, 0, 0, 0 };
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const struct optdesc opt_posixmq_maxmsg = { "posixmq-maxmsg", "mq-maxmsg", OPT_POSIXMQ_MAXMSG, GROUP_POSIXMQ, PH_OPEN, TYPE_LONG, OFUNC_SPEC, 0, 0, 0 };
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const struct optdesc opt_posixmq_msgsize = { "posixmq-msgsize", "mq-msgsize", OPT_POSIXMQ_MSGSIZE, GROUP_POSIXMQ, PH_OPEN, TYPE_LONG, OFUNC_SPEC, 0, 0, 0 };
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/* _read(): open immediately, stay in transfer loop
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_recv(): wait until data (how we know there is??), oneshot, opt.fork
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@ -47,11 +49,12 @@ static int xioopen_posixmq(
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bool opt_unlink_early = false;
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bool nonblock = 0;
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bool flush = false;
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struct mq_attr attr = { 0 };
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bool setopts = false;
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int oflag;
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bool opt_o_excl = false;
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mode_t opt_mode = 0666;
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mqd_t mqd;
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struct mq_attr attr;
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int _errno;
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bool dofork = false;
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int maxchildren = 0;
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@ -100,6 +103,47 @@ static int xioopen_posixmq(
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retropt_bool(opts, OPT_O_EXCL, &opt_o_excl);
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retropt_mode(opts, OPT_PERM, &opt_mode);
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retropt_bool(opts, OPT_POSIXMQ_FLUSH, &flush);
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retropt_long(opts, OPT_POSIXMQ_MAXMSG, &attr.mq_maxmsg) ||
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(setopts = true);
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retropt_long(opts, OPT_POSIXMQ_MSGSIZE, &attr.mq_msgsize) ||
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(setopts = true);
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/* When only one of mq-maxmsg and mq-msgsize options has been provided,
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we must nevertheless set the other option value in strucht mq_attr.
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For this we have to find the default, read it from /proc fs */
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if (setopts) {
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int pfd;
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const static char *PROC_MAXMSG = "/proc/sys/fs/mqueue/msg_default";
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const static char *PROC_MSGSIZE = "/proc/sys/fs/mqueue/msgsize_default";
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char buff[21]; /* fit a 64bit num in decimal */
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ssize_t bytes;
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if (attr.mq_maxmsg == 0) {
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if ((pfd = Open(PROC_MAXMSG, O_RDONLY, 0)) < 0) {
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Warn2("open(\"%s\", O_RDONLY, 0): %s", PROC_MAXMSG, strerror(errno));
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} else if ((bytes = Read(pfd, buff, sizeof(buff)-1)) < 0) {
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Warn4("read(%d /* \"%s\" */, buff, "F_Zd"): %s",
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pfd, PROC_MAXMSG, sizeof(buff)-1, strerror (errno));
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Close(pfd);
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} else {
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sscanf(buff, "%ld", &attr.mq_maxmsg);
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Close(pfd);
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}
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}
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if (attr.mq_msgsize == 0) {
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if ((pfd = Open(PROC_MSGSIZE, O_RDONLY, 0)) < 0) {
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Warn2("open(\"%s\", O_RDONLY, 0): %s", PROC_MSGSIZE, strerror(errno));
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} else if ((bytes = Read(pfd, buff, sizeof(buff)-1)) < 0) {
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Warn4("read(%d /* \"%s\" */, buff, "F_Zd"): %s",
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pfd, PROC_MSGSIZE, sizeof(buff)-1, strerror (errno));
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Close(pfd);
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} else {
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sscanf(buff, "%ld", &attr.mq_msgsize);
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Close(pfd);
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}
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}
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}
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retropt_bool(opts, OPT_UNLINK_EARLY, &opt_unlink_early);
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if (opt_unlink_early) {
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@ -126,12 +170,18 @@ static int xioopen_posixmq(
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}
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/* Now open the message queue */
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Debug3("mq_open(\"%s\", %d, "F_mode", NULL)", name, oflag, opt_mode);
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mqd = mq_open(name, oflag, opt_mode, NULL);
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if (setopts)
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Debug8("%s: mq_open(\"%s\", "F_mode", "F_mode", {flags=%ld, maxmsg=%ld, msgsize=%ld, curmsgs=%ld} )", argv[0], name, oflag, opt_mode, attr.mq_flags, attr.mq_maxmsg, attr.mq_msgsize, attr.mq_curmsgs);
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else
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Debug4("%s: mq_open(\"%s\", "F_mode", "F_mode", NULL)", argv[0], name, oflag, opt_mode);
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mqd = mq_open(name, oflag, opt_mode, setopts ? &attr : NULL);
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_errno = errno;
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Debug1("mq_open() -> %d", mqd);
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if (mqd < 0) {
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Error3("%s: mq_open(\"%s\"): %s", argv[0], name, strerror(errno));
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if (setopts)
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Error9("%s: mq_open(\"%s\", "F_mode", "F_mode", {flags=%ld, maxmsg=%ld, msgsize=%ld, curmsgs=%ld} ): %s", argv[0], name, oflag, opt_mode, attr.mq_flags, attr.mq_maxmsg, attr.mq_msgsize, attr.mq_curmsgs, strerror(errno));
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else
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Error5("%s: mq_open(\"%s\", "F_mode", "F_mode", NULL): %s", argv[0], name, oflag, opt_mode, strerror(errno));
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errno = _errno;
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return STAT_RETRYLATER;
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}
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@ -10,6 +10,8 @@ extern const struct addrdesc xioaddr_posixmq_read;
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extern const struct addrdesc xioaddr_posixmq_receive;
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extern const struct addrdesc xioaddr_posixmq_send;
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extern const struct optdesc opt_posixmq_maxmsg;
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extern const struct optdesc opt_posixmq_msgsize;
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extern const struct optdesc opt_posixmq_priority;
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extern const struct optdesc opt_posixmq_flush;
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@ -1032,8 +1032,10 @@ const struct optname optionnames[] = {
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#endif
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IF_ANY ("mode", &opt_perm)
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#if WITH_POSIXMQ
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IF_ANY ("mq-flush", &opt_posixmq_flush)
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IF_ANY ("mq-prio", &opt_posixmq_priority)
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IF_ANY ("mq-flush", &opt_posixmq_flush)
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IF_ANY ("mq-maxmsg", &opt_posixmq_maxmsg)
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IF_ANY ("mq-msgsize", &opt_posixmq_msgsize)
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IF_ANY ("mq-prio", &opt_posixmq_priority)
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#endif
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#ifdef TCP_MAXSEG
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IF_TCP ("mss", &opt_tcp_maxseg)
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@ -1350,6 +1352,8 @@ const struct optname optionnames[] = {
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#endif
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#if WITH_POSIXMQ
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IF_ANY ("posixmq-flush", &opt_posixmq_flush)
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IF_ANY ("posixmq-maxmsg", &opt_posixmq_maxmsg)
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IF_ANY ("posixmq-msgsize", &opt_posixmq_msgsize)
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IF_ANY ("posixmq-priority", &opt_posixmq_priority)
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#endif
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#if (WITH_IP4 || WITH_IP6) && HAVE_RESOLV_H && WITH_RES_PRIMARY
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@ -483,6 +483,8 @@ enum e_optcode {
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OPT_MAX_CHILDREN,
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#if WITH_POSIXMQ
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OPT_POSIXMQ_FLUSH,
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OPT_POSIXMQ_MAXMSG,
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OPT_POSIXMQ_MSGSIZE,
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OPT_POSIXMQ_PRIORITY,
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#endif
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#ifdef NLDLY
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