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Add a 'send-process-signal' command to virsh
* tools/virsh.c: Add send-process-signal * tools/virsh.pod: Document new command Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
This commit is contained in:
Daniel P. Berrange
parent
c51babd90e
commit
d9a52520c7
@ -5900,6 +5900,109 @@ cleanup:
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return ret;
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}
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/*
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* "send-process-signal" command
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*/
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static const vshCmdInfo info_send_process_signal[] = {
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{"help", N_("Send signals to processes") },
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{"desc", N_("Send signals to processes in the guest") },
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{NULL, NULL}
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};
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static const vshCmdOptDef opts_send_process_signal[] = {
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{"domain", VSH_OT_DATA, VSH_OFLAG_REQ, N_("domain name, id or uuid")},
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{"pid", VSH_OT_DATA, VSH_OFLAG_REQ, N_("the process ID") },
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{"signame", VSH_OT_DATA, VSH_OFLAG_REQ, N_("the signal number or name") },
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{NULL, 0, 0, NULL}
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};
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VIR_ENUM_DECL(virDomainProcessSignal)
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VIR_ENUM_IMPL(virDomainProcessSignal,
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VIR_DOMAIN_PROCESS_SIGNAL_LAST,
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"nop", "hup", "int", "quit", "ill", /* 0-4 */
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"trap", "abrt", "bus", "fpe", "kill", /* 5-9 */
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"usr1", "segv", "usr2", "pipe", "alrm", /* 10-14 */
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"term", "stkflt", "chld", "cont", "stop", /* 15-19 */
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"tstp", "ttin", "ttou", "urg", "xcpu", /* 20-24 */
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"xfsz", "vtalrm", "prof", "winch", "poll", /* 25-29 */
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"pwr", "sys", "rt0","rt1", "rt2", /* 30-34 */
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"rt3", "rt4", "rt5", "rt6", "rt7", /* 35-39 */
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"rt8", "rt9", "rt10", "rt11", "rt12", /* 40-44 */
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"rt13", "rt14", "rt15", "rt16", "rt17", /* 45-49 */
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"rt18", "rt19", "rt20", "rt21", "rt22", /* 50-54 */
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"rt23", "rt24", "rt25", "rt26", "rt27", /* 55-59 */
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"rt28", "rt29", "rt30", "rt31", "rt32") /* 60-64 */
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static int getSignalNumber(vshControl *ctl, const char *signame)
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{
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size_t i;
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int signum;
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char *lower = vshStrdup(ctl, signame);
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char *tmp = lower;
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for (i = 0 ; signame[i] ; i++)
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lower[i] = c_tolower(signame[i]);
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if (virStrToLong_i(lower, NULL, 10, &signum) >= 0)
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goto cleanup;
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if (STRPREFIX(lower, "sig_"))
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lower += 4;
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else if (STRPREFIX(lower, "sig"))
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lower += 3;
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if ((signum = virDomainProcessSignalTypeFromString(lower)) >= 0)
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goto cleanup;
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signum = -1;
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cleanup:
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VIR_FREE(tmp);
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return signum;
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}
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static bool
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cmdSendProcessSignal(vshControl *ctl, const vshCmd *cmd)
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{
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virDomainPtr dom;
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int ret = false;
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const char *pidstr;
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const char *signame;
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long long pid_value;
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int signum;
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if (!(dom = vshCommandOptDomain(ctl, cmd, NULL)))
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return false;
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if (vshCommandOptString(cmd, "pid", &pidstr) <= 0) {
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vshError(ctl, "%s", _("missing argument"));
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return false;
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}
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if (vshCommandOptString(cmd, "signame", &signame) <= 0) {
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vshError(ctl, "%s", _("missing argument"));
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return false;
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}
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if (virStrToLong_ll(pidstr, NULL, 10, &pid_value) < 0) {
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vshError(ctl, _("malformed PID value: %s"), pidstr);
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goto cleanup;
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}
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if ((signum = getSignalNumber(ctl, signame)) < 0) {
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vshError(ctl, _("malformed signal name: %s"), signame);
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goto cleanup;
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}
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if (virDomainSendProcessSignal(dom, pid_value, signum, 0) < 0)
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goto cleanup;
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ret = true;
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cleanup:
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virDomainFree(dom);
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return ret;
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}
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/*
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* "setmem" command
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*/
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@ -8398,6 +8501,7 @@ const vshCmdDef domManagementCmds[] = {
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{"edit", cmdEdit, opts_edit, info_edit, 0},
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{"inject-nmi", cmdInjectNMI, opts_inject_nmi, info_inject_nmi, 0},
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{"send-key", cmdSendKey, opts_send_key, info_send_key, 0},
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{"send-process-signal", cmdSendProcessSignal, opts_send_process_signal, info_send_process_signal, 0},
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{"managedsave", cmdManagedSave, opts_managedsave, info_managedsave, 0},
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{"managedsave-remove", cmdManagedSaveRemove, opts_managedsaveremove,
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info_managedsaveremove, 0},
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@ -1393,6 +1393,37 @@ B<Examples>
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# send a tab, held for 1 second
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virsh send-key --holdtime 1000 0xf
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=item B<send-process-signal> I<domain-id> I<pid> I<signame>
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Send a signal I<signame> to the process identified by I<pid> running in
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the virtual domain I<domain-id>. The I<pid> is a process ID in the virtual
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domain namespace.
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The I<signame> argument may be either an integer signal constant number,
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or one of the symbolic names:
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"nop", "hup", "int", "quit", "ill",
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"trap", "abrt", "bus", "fpe", "kill",
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"usr1", "segv", "usr2", "pipe", "alrm",
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"term", "stkflt", "chld", "cont", "stop",
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"tstp", "ttin", "ttou", "urg", "xcpu",
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"xfsz", "vtalrm", "prof", "winch", "poll",
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"pwr", "sys", "rt0", "rt1", "rt2", "rt3",
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"rt4", "rt5", "rt6", "rt7", "rt8", "rt9",
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"rt10", "rt11", "rt12", "rt13", "rt14", "rt15",
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"rt16", "rt17", "rt18", "rt19", "rt20", "rt21",
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"rt22", "rt23", "rt24", "rt25", "rt26", "rt27",
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"rt28", "rt29", "rt30", "rt31", "rt32"
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The symbol name may optionally be prefixed with 'sig' or 'sig_' and
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may be in uppercase or lowercase.
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B<Examples>
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virsh send-process-signal myguest 1 15
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virsh send-process-signal myguest 1 term
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virsh send-process-signal myguest 1 sigterm
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virsh send-process-signal myguest 1 SIG_HUP
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=item B<setmem> I<domain> B<size> [[I<--config>] [I<--live>] |
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[I<--current>]]
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