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cmdmon: add reset command

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The reset command drops all measurements and switches the reference to
the unsynchronised state. This command can help chronyd with recovery
when the measurements are known to be no longer valid or accurate, e.g.
due to moving the computer to a different network, or resuming the
computer from a low-power state (which resets the system clock).
This commit is contained in:
Miroslav Lichvar
2020-03-11 12:20:51 +01:00
parent d5311adafb
commit e7a254265f
8 changed files with 53 additions and 2 deletions
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13
client.c
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@@ -1269,6 +1269,7 @@ give_help(void)
"cyclelogs\0Close and re-open log files\0"
"dump\0Dump all measurements to save files\0"
"rekey\0Re-read keys from key file\0"
"reset\0Drop all measurements\0"
"shutdown\0Stop daemon\0"
"\0\0"
"Client commands:\0\0"
@@ -1315,7 +1316,7 @@ command_name_generator(const char *text, int state)
"deny", "dns", "dump", "exit", "help", "keygen", "local", "makestep",
"manual", "maxdelay", "maxdelaydevratio", "maxdelayratio", "maxpoll",
"maxupdateskew", "minpoll", "minstratum", "ntpdata", "offline", "online", "onoffline",
"polltarget", "quit", "refresh", "rekey", "reselect", "reselectdist",
"polltarget", "quit", "refresh", "rekey", "reselect", "reselectdist", "reset",
"retries", "rtcdata", "serverstats", "settime", "shutdown", "smoothing",
"smoothtime", "sourcename", "sources", "sourcestats",
"timeout", "tracking", "trimrtc", "waitsync", "writertc",
@@ -2835,6 +2836,14 @@ process_cmd_shutdown(CMD_Request *msg, char *line)
/* ================================================== */
static void
process_cmd_reset(CMD_Request *msg, char *line)
{
msg->command = htons(REQ_RESET);
}
/* ================================================== */
static int
process_cmd_waitsync(char *line)
{
@@ -3129,6 +3138,8 @@ process_line(char *line)
process_cmd_reselect(&tx_message, line);
} else if (!strcmp(command, "reselectdist")) {
do_normal_submit = process_cmd_reselectdist(&tx_message, line);
} else if (!strcmp(command, "reset")) {
process_cmd_reset(&tx_message, line);
} else if (!strcmp(command, "retries")) {
ret = process_cmd_retries(line);
do_normal_submit = 0;