This patch adds the main configuration file(/etc/ndctl/monitor.conf)
of ndctl monitor. It contains the configuration directives that give
ndctl monitor instructions. Users can change the configuration by
editing this file or using [--config-file] option to override this
file. The changed value will work after restart ndctl monitor service.
Signed-off-by: QI Fuli <qi.f...@jp.fujitsu.com>
---
ndctl/Makefile.am | 5 ++
ndctl/monitor.c | 115 +++++++++++++++++++++++++++++++++++++++++++++
ndctl/monitor.conf | 41 ++++++++++++++++
3 files changed, 161 insertions(+)
create mode 100644 ndctl/monitor.conf
diff --git a/ndctl/Makefile.am b/ndctl/Makefile.am
index 7dbf223..ae3d894 100644
--- a/ndctl/Makefile.am
+++ b/ndctl/Makefile.am
@@ -42,3 +42,8 @@ ndctl_SOURCES += ../test/libndctl.c \
../test/multi-pmem.c \
../test/core.c
endif
+
+monitor_config_file = monitor.conf
+monitor_configdir = /etc/ndctl/
+monitor_config_DATA = $(monitor_config_file)
+EXTRA_DIST += $(monitor_config_file)
diff --git a/ndctl/monitor.c b/ndctl/monitor.c
index d926a81..56a1d0b 100644
--- a/ndctl/monitor.c
+++ b/ndctl/monitor.c
@@ -25,6 +25,7 @@
static struct monitor {
const char *logfile;
+ const char *config_file;
const char *dimm_event;
bool daemon;
} monitor;
@@ -432,6 +433,109 @@ out:
return 1;
}
+static void parse_config(const char **arg, char *key, char *val, char *ident)
+{
+ struct strbuf value = STRBUF_INIT;
+ size_t arg_len = *arg ? strlen(*arg) : 0;
+
+ if (!ident || !key || (strcmp(ident, key) != 0))
+ return;
+
+ if (arg_len) {
+ strbuf_add(&value, *arg, arg_len);
+ strbuf_addstr(&value, " ");
+ }
+ strbuf_addstr(&value, val);
+ *arg = strbuf_detach(&value, NULL);
+}
+
+static int read_config_file(struct ndctl_ctx *ctx, struct monitor *_monitor,
+ struct util_filter_params *_param)
+{
+ FILE *f;
+ int line = 0;
+ size_t len = 0;
+ char *buf, *value, *config_file;
+ const char *def_config_file = "/etc/ndctl/monitor.conf";
+
+ if (_monitor->config_file)
+ config_file = strdup(_monitor->config_file);
+ else
+ config_file = strdup(def_config_file);
+ if (!config_file) {
+ fail("strdup default config file failed\n");
+ goto out;
+ }
+
+ buf = malloc(BUF_SIZE);
+ if (!buf) {
+ fail("malloc read config-file buf error\n");
+ goto out;
+ }
+
+ f = fopen(config_file, "r");
+ if (!f) {
+ fail("config-file: %s cannot be opened\n", config_file);
+ goto out;
+ }
+
+ while (fgets(buf, BUF_SIZE, f)) {
+ value = NULL;
+ line++;
+
+ while (isspace(*buf))
+ buf++;
+
+ if (*buf == '#' || *buf == '\0')
+ continue;
+
+ value = strchr(buf, '=');
+ if (!value) {
+ fail("config-file syntax error, skip line[%i]\n", line);
+ continue;
+ }
+
+ value[0] = '\0';
+ value++;
+
+ while (isspace(value[0]))
+ value++;
+
+ len = strlen(buf);
+ if (len == 0)
+ continue;
+ while (isspace(buf[len-1]))
+ len--;
+ buf[len] = '\0';
+
+ len = strlen(value);
+ if (len == 0)
+ continue;
+ while (isspace(value[len-1]))
+ len--;
+ value[len] = '\0';
+
+ if (len == 0)
+ continue;
+
+ parse_config(&_param->bus, "bus", value, buf);
+ parse_config(&_param->dimm, "dimm", value, buf);
+ parse_config(&_param->region, "region", value, buf);
+ parse_config(&_param->namespace, "namespace", value, buf);
+ parse_config(&_monitor->dimm_event, "dimm-event", value, buf);
+
+ if (!_monitor->logfile)
+ parse_config(&_monitor->logfile, "logfile", value, buf);
+ }
+ fclose(f);
+ free(config_file);
+ return 0;
+out:
+ if (config_file)
+ free(config_file);
+ return 1;
+}
+
int cmd_monitor(int argc, const char **argv, void *ctx)
{
int i;
@@ -445,6 +549,8 @@ int cmd_monitor(int argc, const char **argv, void *ctx)
"namespace-id", "filter by namespace id"),
OPT_FILENAME('l', "logfile", &monitor.logfile, "file | syslog",
"where to output the monitor's notification"),
+ OPT_FILENAME('c', "config-file", &monitor.config_file,
+ "config-file", "override the default config"),
OPT_BOOLEAN('f', "daemon", &monitor.daemon,
"run ndctl monitor as a daemon"),
OPT_STRING('D', "dimm-event", &monitor.dimm_event,
@@ -473,6 +579,15 @@ int cmd_monitor(int argc, const char **argv, void *ctx)
ndctl_set_log_fn((struct ndctl_ctx *)ctx, log_syslog);
ndctl_set_log_priority((struct ndctl_ctx *)ctx, LOG_NOTICE);
+ if (read_config_file((struct ndctl_ctx *)ctx, &monitor, ¶m))
+ goto out;
+
+ if (monitor.logfile && (strcmp(monitor.logfile, "./syslog") != 0)
+ && (strcmp(monitor.logfile, "syslog") != 0)) {
+ fix_filename(prefix, (const char **)&monitor.logfile);
+ ndctl_set_log_fn((struct ndctl_ctx *)ctx, log_file);
+ }
+
if (monitor.daemon) {
if (daemon(0, 0) != 0) {
fail("daemon start failed\n");
diff --git a/ndctl/monitor.conf b/ndctl/monitor.conf
new file mode 100644
index 0000000..5c10a8d
--- /dev/null
+++ b/ndctl/monitor.conf
@@ -0,0 +1,41 @@
+# This is the main ndctl monitor configuration file. It contains the
+# configuration directives that give ndctl monitor instructions.
+# You can change the configuration of ndctl monitor by editing this
+# file or using [--config-file=<file>] option to override this one.
+# The changed value will work after restart ndctl monitor service.
+
+# In this file, lines starting with a hash (#) are comments.
+# The configurations should follow <key> = <value> style.
+# Multiple space-separated values are allowed, but except the following
+# characters: : ? / \ % " ' $ & ! * { } [ ] ( ) = < > @
+
+# The objects to monitor are filtered via dimm's name by setting key "dimm".
+# If this value is different from the value of [--dimm=<value>] option,
+# both of the values will work.
+# dimm = all
+
+# The objects to monitor are filtered via its parent bus by setting key "bus".
+# If this value is different from the value of [--bus=<value>] option,
+# both of the values will work.
+# bus = all
+
+# The objects to monitor are filtered via region by setting key "region".
+# If this value is different from the value of [--region=<value>] option,
+# both of the values will work.
+# region = all
+
+# The objects to monitor are filtered via namespace by setting key "namespace".
+# If this value is different from the value of [--namespace=<value>] option,
+# both of the values will work.
+# namespace = all
+
+# The DIMM events to monitor are filtered via event type by setting key
+# "dimm-event". If this value is different from the value of
+# [--dimm-event=<value>] option, both of the values will work.
+# dimm-event = all
+
+# Users can choose to output the notifications to syslog (logfile=syslog)
+# or to write into a special file (logfile=<file>) by setting key "logfile".
+# If this value is in conflict with the value of [--logfile=<value>] option,
+# this value will be ignored.
+# logfile = /var/log/ndctl/monitor.log
--
2.17.1
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