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-rw-r--r--src/common/config.cc1583
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diff --git a/src/common/config.cc b/src/common/config.cc
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+// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
+// vim: ts=8 sw=2 smarttab
+/*
+ * Ceph - scalable distributed file system
+ *
+ * Copyright (C) 2004-2006 Sage Weil <sage@newdream.net>
+ *
+ * This is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License version 2.1, as published by the Free Software
+ * Foundation. See file COPYING.
+ *
+ */
+
+#include <boost/type_traits.hpp>
+#if __has_include(<filesystem>)
+#include <filesystem>
+namespace fs = std::filesystem;
+#else
+#include <experimental/filesystem>
+namespace fs = std::experimental::filesystem;
+#endif
+#include "common/ceph_argparse.h"
+#include "common/common_init.h"
+#include "common/config.h"
+#include "common/config_obs.h"
+#include "include/str_list.h"
+#include "include/stringify.h"
+#include "osd/osd_types.h"
+#include "common/errno.h"
+#include "common/hostname.h"
+#include "common/dout.h"
+
+/* Don't use standard Ceph logging in this file.
+ * We can't use logging until it's initialized, and a lot of the necessary
+ * initialization happens here.
+ */
+#undef dout
+#undef pdout
+#undef derr
+#undef generic_dout
+
+// set set_mon_vals()
+#define dout_subsys ceph_subsys_monc
+
+using std::cerr;
+using std::cout;
+using std::map;
+using std::less;
+using std::list;
+using std::ostream;
+using std::ostringstream;
+using std::pair;
+using std::string;
+using std::string_view;
+using std::vector;
+
+using ceph::bufferlist;
+using ceph::decode;
+using ceph::encode;
+using ceph::Formatter;
+
+static const char *CEPH_CONF_FILE_DEFAULT = "$data_dir/config,/etc/ceph/$cluster.conf,$home/.ceph/$cluster.conf,$cluster.conf"
+#if defined(__FreeBSD__)
+ ",/usr/local/etc/ceph/$cluster.conf"
+#elif defined(_WIN32)
+ ",$programdata/ceph/$cluster.conf"
+#endif
+ ;
+
+#define _STR(x) #x
+#define STRINGIFY(x) _STR(x)
+
+const char *ceph_conf_level_name(int level)
+{
+ switch (level) {
+ case CONF_DEFAULT: return "default"; // built-in default
+ case CONF_MON: return "mon"; // monitor config database
+ case CONF_ENV: return "env"; // process environment (CEPH_ARGS)
+ case CONF_FILE: return "file"; // ceph.conf file
+ case CONF_CMDLINE: return "cmdline"; // process command line args
+ case CONF_OVERRIDE: return "override"; // injectargs or 'config set' at runtime
+ case CONF_FINAL: return "final";
+ default: return "???";
+ }
+}
+
+int ceph_resolve_file_search(const std::string& filename_list,
+ std::string& result)
+{
+ list<string> ls;
+ get_str_list(filename_list, ";,", ls);
+
+ int ret = -ENOENT;
+ list<string>::iterator iter;
+ for (iter = ls.begin(); iter != ls.end(); ++iter) {
+ int fd = ::open(iter->c_str(), O_RDONLY|O_CLOEXEC);
+ if (fd < 0) {
+ ret = -errno;
+ continue;
+ }
+ close(fd);
+ result = *iter;
+ return 0;
+ }
+
+ return ret;
+}
+
+static int conf_stringify(const Option::value_t& v, string *out)
+{
+ if (boost::get<boost::blank>(&v)) {
+ return -ENOENT;
+ }
+ *out = Option::to_str(v);
+ return 0;
+}
+
+md_config_t::md_config_t(ConfigValues& values,
+ const ConfigTracker& tracker,
+ bool is_daemon)
+ : is_daemon(is_daemon)
+{
+ // Load the compile-time list of Option into
+ // a map so that we can resolve keys quickly.
+ for (const auto &i : ceph_options) {
+ if (schema.count(i.name)) {
+ // We may be instantiated pre-logging so send
+ std::cerr << "Duplicate config key in schema: '" << i.name << "'"
+ << std::endl;
+ ceph_abort();
+ }
+ schema.emplace(i.name, i);
+ }
+
+ // Define the debug_* options as well.
+ subsys_options.reserve(values.subsys.get_num());
+ for (unsigned i = 0; i < values.subsys.get_num(); ++i) {
+ string name = string("debug_") + values.subsys.get_name(i);
+ subsys_options.push_back(
+ Option(name, Option::TYPE_STR, Option::LEVEL_ADVANCED));
+ Option& opt = subsys_options.back();
+ opt.set_default(stringify(values.subsys.get_log_level(i)) + "/" +
+ stringify(values.subsys.get_gather_level(i)));
+ string desc = string("Debug level for ") + values.subsys.get_name(i);
+ opt.set_description(desc.c_str());
+ opt.set_flag(Option::FLAG_RUNTIME);
+ opt.set_long_description("The value takes the form 'N' or 'N/M' where N and M are values between 0 and 99. N is the debug level to log (all values below this are included), and M is the level to gather and buffer in memory. In the event of a crash, the most recent items <= M are dumped to the log file.");
+ opt.set_subsys(i);
+ opt.set_validator([](std::string *value, std::string *error_message) {
+ int m, n;
+ int r = sscanf(value->c_str(), "%d/%d", &m, &n);
+ if (r >= 1) {
+ if (m < 0 || m > 99) {
+ *error_message = "value must be in range [0, 99]";
+ return -ERANGE;
+ }
+ if (r == 2) {
+ if (n < 0 || n > 99) {
+ *error_message = "value must be in range [0, 99]";
+ return -ERANGE;
+ }
+ } else {
+ // normalize to M/N
+ n = m;
+ *value = stringify(m) + "/" + stringify(n);
+ }
+ } else {
+ *error_message = "value must take the form N or N/M, where N and M are integers";
+ return -EINVAL;
+ }
+ return 0;
+ });
+ }
+ for (auto& opt : subsys_options) {
+ schema.emplace(opt.name, opt);
+ }
+
+ // Populate list of legacy_values according to the OPTION() definitions
+ // Note that this is just setting up our map of name->member ptr. The
+ // default values etc will get loaded in along with new-style data,
+ // as all loads write to both the values map, and the legacy
+ // members if present.
+ legacy_values = {
+#define OPTION(name, type) \
+ {STRINGIFY(name), &ConfigValues::name},
+#define SAFE_OPTION(name, type) OPTION(name, type)
+#include "common/legacy_config_opts.h"
+#undef OPTION
+#undef SAFE_OPTION
+ };
+
+ validate_schema();
+
+ // Validate default values from the schema
+ for (const auto &i : schema) {
+ const Option &opt = i.second;
+ if (opt.type == Option::TYPE_STR) {
+ bool has_daemon_default = !boost::get<boost::blank>(&opt.daemon_value);
+ Option::value_t default_val;
+ if (is_daemon && has_daemon_default) {
+ default_val = opt.daemon_value;
+ } else {
+ default_val = opt.value;
+ }
+ // We call pre_validate as a sanity check, but also to get any
+ // side effect (value modification) from the validator.
+ std::string *def_str = boost::get<std::string>(&default_val);
+ std::string val = *def_str;
+ std::string err;
+ if (opt.pre_validate(&val, &err) != 0) {
+ std::cerr << "Default value " << opt.name << "=" << *def_str << " is "
+ "invalid: " << err << std::endl;
+
+ // This is the compiled-in default that is failing its own option's
+ // validation, so this is super-invalid and should never make it
+ // past a pull request: crash out.
+ ceph_abort();
+ }
+ if (val != *def_str) {
+ // if the validator normalizes the string into a different form than
+ // what was compiled in, use that.
+ set_val_default(values, tracker, opt.name, val);
+ }
+ }
+ }
+
+ // Copy out values (defaults) into any legacy (C struct member) fields
+ update_legacy_vals(values);
+}
+
+md_config_t::~md_config_t()
+{
+}
+
+/**
+ * Sanity check schema. Assert out on failures, to ensure any bad changes
+ * cannot possibly pass any testing and make it into a release.
+ */
+void md_config_t::validate_schema()
+{
+ for (const auto &i : schema) {
+ const auto &opt = i.second;
+ for (const auto &see_also_key : opt.see_also) {
+ if (schema.count(see_also_key) == 0) {
+ std::cerr << "Non-existent see-also key '" << see_also_key
+ << "' on option '" << opt.name << "'" << std::endl;
+ ceph_abort();
+ }
+ }
+ }
+
+ for (const auto &i : legacy_values) {
+ if (schema.count(i.first) == 0) {
+ std::cerr << "Schema is missing legacy field '" << i.first << "'"
+ << std::endl;
+ ceph_abort();
+ }
+ }
+}
+
+const Option *md_config_t::find_option(const std::string_view name) const
+{
+ auto p = schema.find(name);
+ if (p != schema.end()) {
+ return &p->second;
+ }
+ return nullptr;
+}
+
+void md_config_t::set_val_default(ConfigValues& values,
+ const ConfigTracker& tracker,
+ const string_view name, const std::string& val)
+{
+ const Option *o = find_option(name);
+ ceph_assert(o);
+ string err;
+ int r = _set_val(values, tracker, val, *o, CONF_DEFAULT, &err);
+ ceph_assert(r >= 0);
+}
+
+int md_config_t::set_mon_vals(CephContext *cct,
+ ConfigValues& values,
+ const ConfigTracker& tracker,
+ const map<string,string,less<>>& kv,
+ config_callback config_cb)
+{
+ ignored_mon_values.clear();
+
+ if (!config_cb) {
+ ldout(cct, 4) << __func__ << " no callback set" << dendl;
+ }
+
+ for (auto& i : kv) {
+ if (config_cb) {
+ if (config_cb(i.first, i.second)) {
+ ldout(cct, 4) << __func__ << " callback consumed " << i.first << dendl;
+ continue;
+ }
+ ldout(cct, 4) << __func__ << " callback ignored " << i.first << dendl;
+ }
+ const Option *o = find_option(i.first);
+ if (!o) {
+ ldout(cct,10) << __func__ << " " << i.first << " = " << i.second
+ << " (unrecognized option)" << dendl;
+ continue;
+ }
+ if (o->has_flag(Option::FLAG_NO_MON_UPDATE)) {
+ ignored_mon_values.emplace(i);
+ continue;
+ }
+ std::string err;
+ int r = _set_val(values, tracker, i.second, *o, CONF_MON, &err);
+ if (r < 0) {
+ ldout(cct, 4) << __func__ << " failed to set " << i.first << " = "
+ << i.second << ": " << err << dendl;
+ ignored_mon_values.emplace(i);
+ } else if (r == ConfigValues::SET_NO_CHANGE ||
+ r == ConfigValues::SET_NO_EFFECT) {
+ ldout(cct,20) << __func__ << " " << i.first << " = " << i.second
+ << " (no change)" << dendl;
+ } else if (r == ConfigValues::SET_HAVE_EFFECT) {
+ ldout(cct,10) << __func__ << " " << i.first << " = " << i.second << dendl;
+ } else {
+ ceph_abort();
+ }
+ }
+ values.for_each([&] (auto name, auto configs) {
+ auto config = configs.find(CONF_MON);
+ if (config == configs.end()) {
+ return;
+ }
+ if (kv.find(name) != kv.end()) {
+ return;
+ }
+ ldout(cct,10) << __func__ << " " << name
+ << " cleared (was " << Option::to_str(config->second) << ")"
+ << dendl;
+ values.rm_val(name, CONF_MON);
+ // if this is a debug option, it needs to propagate to teh subsys;
+ // this isn't covered by update_legacy_vals() below. similarly,
+ // we want to trigger a config notification for these items.
+ const Option *o = find_option(name);
+ _refresh(values, *o);
+ });
+ values_bl.clear();
+ update_legacy_vals(values);
+ return 0;
+}
+
+int md_config_t::parse_config_files(ConfigValues& values,
+ const ConfigTracker& tracker,
+ const char *conf_files_str,
+ std::ostream *warnings,
+ int flags)
+{
+ if (safe_to_start_threads)
+ return -ENOSYS;
+
+ if (values.cluster.empty() && !conf_files_str) {
+ values.cluster = get_cluster_name(nullptr);
+ }
+ // open new conf
+ for (auto& fn : get_conffile_paths(values, conf_files_str, warnings, flags)) {
+ bufferlist bl;
+ std::string error;
+ if (bl.read_file(fn.c_str(), &error)) {
+ parse_error = error;
+ continue;
+ }
+ ostringstream oss;
+ int ret = parse_buffer(values, tracker, bl.c_str(), bl.length(), &oss);
+ if (ret == 0) {
+ parse_error.clear();
+ conf_path = fn;
+ break;
+ }
+ parse_error = oss.str();
+ if (ret != -ENOENT) {
+ return ret;
+ }
+ }
+ // it must have been all ENOENTs, that's the only way we got here
+ if (conf_path.empty()) {
+ return -ENOENT;
+ }
+ if (values.cluster.empty()) {
+ values.cluster = get_cluster_name(conf_path.c_str());
+ }
+ update_legacy_vals(values);
+ return 0;
+}
+
+int
+md_config_t::parse_buffer(ConfigValues& values,
+ const ConfigTracker& tracker,
+ const char* buf, size_t len,
+ std::ostream* warnings)
+{
+ if (!cf.parse_buffer(string_view{buf, len}, warnings)) {
+ return -EINVAL;
+ }
+ const auto my_sections = get_my_sections(values);
+ for (const auto &i : schema) {
+ const auto &opt = i.second;
+ std::string val;
+ if (_get_val_from_conf_file(my_sections, opt.name, val)) {
+ continue;
+ }
+ std::string error_message;
+ if (_set_val(values, tracker, val, opt, CONF_FILE, &error_message) < 0) {
+ if (warnings != nullptr) {
+ *warnings << "parse error setting " << std::quoted(opt.name)
+ << " to " << std::quoted(val);
+ if (!error_message.empty()) {
+ *warnings << " (" << error_message << ")";
+ }
+ *warnings << '\n';
+ }
+ }
+ }
+ cf.check_old_style_section_names({"mds", "mon", "osd"}, cerr);
+ return 0;
+}
+
+std::list<std::string>
+md_config_t::get_conffile_paths(const ConfigValues& values,
+ const char *conf_files_str,
+ std::ostream *warnings,
+ int flags) const
+{
+ if (!conf_files_str) {
+ const char *c = getenv("CEPH_CONF");
+ if (c) {
+ conf_files_str = c;
+ } else {
+ if (flags & CINIT_FLAG_NO_DEFAULT_CONFIG_FILE)
+ return {};
+ conf_files_str = CEPH_CONF_FILE_DEFAULT;
+ }
+ }
+
+ std::list<std::string> paths;
+ get_str_list(conf_files_str, ";,", paths);
+ for (auto i = paths.begin(); i != paths.end(); ) {
+ string& path = *i;
+ if (path.find("$data_dir") != path.npos &&
+ data_dir_option.empty()) {
+ // useless $data_dir item, skip
+ i = paths.erase(i);
+ } else {
+ early_expand_meta(values, path, warnings);
+ ++i;
+ }
+ }
+ return paths;
+}
+
+std::string md_config_t::get_cluster_name(const char* conffile)
+{
+ if (conffile) {
+ // If cluster name is not set yet, use the prefix of the
+ // basename of configuration file as cluster name.
+ if (fs::path path{conffile}; path.extension() == ".conf") {
+ return path.stem().string();
+ } else {
+ // If the configuration file does not follow $cluster.conf
+ // convention, we do the last try and assign the cluster to
+ // 'ceph'.
+ return "ceph";
+ }
+ } else {
+ // set the cluster name to 'ceph' when configuration file is not specified.
+ return "ceph";
+ }
+}
+
+void md_config_t::parse_env(unsigned entity_type,
+ ConfigValues& values,
+ const ConfigTracker& tracker,
+ const char *args_var)
+{
+ if (safe_to_start_threads)
+ return;
+ if (!args_var) {
+ args_var = "CEPH_ARGS";
+ }
+ if (auto s = getenv("CEPH_KEYRING"); s) {
+ string err;
+ _set_val(values, tracker, s, *find_option("keyring"), CONF_ENV, &err);
+ }
+ if (auto dir = getenv("CEPH_LIB"); dir) {
+ for (auto name : { "erasure_code_dir", "plugin_dir", "osd_class_dir" }) {
+ std::string err;
+ const Option *o = find_option(name);
+ ceph_assert(o);
+ _set_val(values, tracker, dir, *o, CONF_ENV, &err);
+ }
+ }
+
+ // Apply pod memory limits:
+ //
+ // There are two types of resource requests: `limits` and `requests`.
+ //
+ // - Requests: Used by the K8s scheduler to determine on which nodes to
+ // schedule the pods. This helps spread the pods to different nodes. This
+ // value should be conservative in order to make sure all the pods are
+ // schedulable. This corresponds to POD_MEMORY_REQUEST (set by the Rook
+ // CRD) and is the target memory utilization we try to maintain for daemons
+ // that respect it.
+ //
+ // If POD_MEMORY_REQUEST is present, we use it as the target.
+ //
+ // - Limits: At runtime, the container runtime (and Linux) will use the
+ // limits to see if the pod is using too many resources. In that case, the
+ // pod will be killed/restarted automatically if the pod goes over the limit.
+ // This should be higher than what is specified for requests (potentially
+ // much higher). This corresponds to the cgroup memory limit that will
+ // trigger the Linux OOM killer.
+ //
+ // If POD_MEMORY_LIMIT is present, we use it as the /default/ value for
+ // the target, which means it will only apply if the *_memory_target option
+ // isn't set via some other path (e.g., POD_MEMORY_REQUEST, or the cluster
+ // config, or whatever.)
+ //
+ // Here are the documented best practices:
+ // https://kubernetes.io/docs/tasks/configure-pod-container/assign-cpu-resource/#motivation-for-cpu-requests-and-limits
+ //
+ // When the operator creates the CephCluster CR, it will need to generate the
+ // desired requests and limits. As long as we are conservative in our choice
+ // for requests and generous with the limits we should be in a good place to
+ // get started.
+ //
+ // The support in Rook is already there for applying the limits as seen in
+ // these links.
+ //
+ // Rook docs on the resource requests and limits:
+ // https://rook.io/docs/rook/v1.0/ceph-cluster-crd.html#cluster-wide-resources-configuration-settings
+ // Example CR settings:
+ // https://github.com/rook/rook/blob/6d2ef936698593036185aabcb00d1d74f9c7bfc1/cluster/examples/kubernetes/ceph/cluster.yaml#L90
+ //
+ uint64_t pod_limit = 0, pod_request = 0;
+ if (auto pod_lim = getenv("POD_MEMORY_LIMIT"); pod_lim) {
+ string err;
+ uint64_t v = atoll(pod_lim);
+ if (v) {
+ switch (entity_type) {
+ case CEPH_ENTITY_TYPE_OSD:
+ {
+ double cgroup_ratio = get_val<double>(
+ values, "osd_memory_target_cgroup_limit_ratio");
+ if (cgroup_ratio > 0.0) {
+ pod_limit = v * cgroup_ratio;
+ // set osd_memory_target *default* based on cgroup limit, so that
+ // it can be overridden by any explicit settings elsewhere.
+ set_val_default(values, tracker,
+ "osd_memory_target", stringify(pod_limit));
+ }
+ }
+ }
+ }
+ }
+ if (auto pod_req = getenv("POD_MEMORY_REQUEST"); pod_req) {
+ if (uint64_t v = atoll(pod_req); v) {
+ pod_request = v;
+ }
+ }
+ if (pod_request && pod_limit) {
+ // If both LIMIT and REQUEST are set, ensure that we use the
+ // min of request and limit*ratio. This is important
+ // because k8s set set LIMIT == REQUEST if only LIMIT is
+ // specified, and we want to apply the ratio in that case,
+ // even though REQUEST is present.
+ pod_request = std::min<uint64_t>(pod_request, pod_limit);
+ }
+ if (pod_request) {
+ string err;
+ switch (entity_type) {
+ case CEPH_ENTITY_TYPE_OSD:
+ _set_val(values, tracker, stringify(pod_request),
+ *find_option("osd_memory_target"),
+ CONF_ENV, &err);
+ break;
+ }
+ }
+
+ if (getenv(args_var)) {
+ vector<const char *> env_args;
+ env_to_vec(env_args, args_var);
+ parse_argv(values, tracker, env_args, CONF_ENV);
+ }
+}
+
+void md_config_t::show_config(const ConfigValues& values,
+ std::ostream& out) const
+{
+ _show_config(values, &out, nullptr);
+}
+
+void md_config_t::show_config(const ConfigValues& values,
+ Formatter *f) const
+{
+ _show_config(values, nullptr, f);
+}
+
+void md_config_t::config_options(Formatter *f) const
+{
+ f->open_array_section("options");
+ for (const auto& i: schema) {
+ f->dump_object("option", i.second);
+ }
+ f->close_section();
+}
+
+void md_config_t::_show_config(const ConfigValues& values,
+ std::ostream *out, Formatter *f) const
+{
+ if (out) {
+ *out << "name = " << values.name << std::endl;
+ *out << "cluster = " << values.cluster << std::endl;
+ }
+ if (f) {
+ f->dump_string("name", stringify(values.name));
+ f->dump_string("cluster", values.cluster);
+ }
+ for (const auto& i: schema) {
+ const Option &opt = i.second;
+ string val;
+ conf_stringify(_get_val(values, opt), &val);
+ if (out) {
+ *out << opt.name << " = " << val << std::endl;
+ }
+ if (f) {
+ f->dump_string(opt.name.c_str(), val);
+ }
+ }
+}
+
+int md_config_t::parse_argv(ConfigValues& values,
+ const ConfigTracker& tracker,
+ std::vector<const char*>& args, int level)
+{
+ if (safe_to_start_threads) {
+ return -ENOSYS;
+ }
+
+ // In this function, don't change any parts of the configuration directly.
+ // Instead, use set_val to set them. This will allow us to send the proper
+ // observer notifications later.
+ std::string val;
+ for (std::vector<const char*>::iterator i = args.begin(); i != args.end(); ) {
+ if (strcmp(*i, "--") == 0) {
+ /* Normally we would use ceph_argparse_double_dash. However, in this
+ * function we *don't* want to remove the double dash, because later
+ * argument parses will still need to see it. */
+ break;
+ }
+ else if (ceph_argparse_flag(args, i, "--show_conf", (char*)NULL)) {
+ cerr << cf << std::endl;
+ _exit(0);
+ }
+ else if (ceph_argparse_flag(args, i, "--show_config", (char*)NULL)) {
+ do_show_config = true;
+ }
+ else if (ceph_argparse_witharg(args, i, &val, "--show_config_value", (char*)NULL)) {
+ do_show_config_value = val;
+ }
+ else if (ceph_argparse_flag(args, i, "--no-mon-config", (char*)NULL)) {
+ values.no_mon_config = true;
+ }
+ else if (ceph_argparse_flag(args, i, "--mon-config", (char*)NULL)) {
+ values.no_mon_config = false;
+ }
+ else if (ceph_argparse_flag(args, i, "--foreground", "-f", (char*)NULL)) {
+ set_val_or_die(values, tracker, "daemonize", "false");
+ }
+ else if (ceph_argparse_flag(args, i, "-d", (char*)NULL)) {
+ set_val_or_die(values, tracker, "fuse_debug", "true");
+ set_val_or_die(values, tracker, "daemonize", "false");
+ set_val_or_die(values, tracker, "log_file", "");
+ set_val_or_die(values, tracker, "log_to_stderr", "true");
+ set_val_or_die(values, tracker, "err_to_stderr", "true");
+ set_val_or_die(values, tracker, "log_to_syslog", "false");
+ }
+ // Some stuff that we wanted to give universal single-character options for
+ // Careful: you can burn through the alphabet pretty quickly by adding
+ // to this list.
+ else if (ceph_argparse_witharg(args, i, &val, "--monmap", "-M", (char*)NULL)) {
+ set_val_or_die(values, tracker, "monmap", val.c_str());
+ }
+ else if (ceph_argparse_witharg(args, i, &val, "--mon_host", "-m", (char*)NULL)) {
+ set_val_or_die(values, tracker, "mon_host", val.c_str());
+ }
+ else if (ceph_argparse_witharg(args, i, &val, "--bind", (char*)NULL)) {
+ set_val_or_die(values, tracker, "public_addr", val.c_str());
+ }
+ else if (ceph_argparse_witharg(args, i, &val, "--keyfile", "-K", (char*)NULL)) {
+ bufferlist bl;
+ string err;
+ int r;
+ if (val == "-") {
+ r = bl.read_fd(STDIN_FILENO, 1024);
+ } else {
+ r = bl.read_file(val.c_str(), &err);
+ }
+ if (r >= 0) {
+ string k(bl.c_str(), bl.length());
+ set_val_or_die(values, tracker, "key", k.c_str());
+ }
+ }
+ else if (ceph_argparse_witharg(args, i, &val, "--keyring", "-k", (char*)NULL)) {
+ set_val_or_die(values, tracker, "keyring", val.c_str());
+ }
+ else if (ceph_argparse_witharg(args, i, &val, "--client_mountpoint", "-r", (char*)NULL)) {
+ set_val_or_die(values, tracker, "client_mountpoint", val.c_str());
+ }
+ else {
+ int r = parse_option(values, tracker, args, i, NULL, level);
+ if (r < 0) {
+ return r;
+ }
+ }
+ }
+ // meta expands could have modified anything. Copy it all out again.
+ update_legacy_vals(values);
+ return 0;
+}
+
+void md_config_t::do_argv_commands(const ConfigValues& values) const
+{
+
+ if (do_show_config) {
+ _show_config(values, &cout, NULL);
+ _exit(0);
+ }
+
+ if (do_show_config_value.size()) {
+ string val;
+ int r = conf_stringify(_get_val(values, do_show_config_value, 0, &cerr),
+ &val);
+ if (r < 0) {
+ if (r == -ENOENT)
+ std::cerr << "failed to get config option '"
+ << do_show_config_value << "': option not found" << std::endl;
+ else
+ std::cerr << "failed to get config option '"
+ << do_show_config_value << "': " << cpp_strerror(r)
+ << std::endl;
+ _exit(1);
+ }
+ std::cout << val << std::endl;
+ _exit(0);
+ }
+}
+
+int md_config_t::parse_option(ConfigValues& values,
+ const ConfigTracker& tracker,
+ std::vector<const char*>& args,
+ std::vector<const char*>::iterator& i,
+ ostream *oss,
+ int level)
+{
+ int ret = 0;
+ size_t o = 0;
+ std::string val;
+
+ std::string option_name;
+ std::string error_message;
+ o = 0;
+ for (const auto& opt_iter: schema) {
+ const Option &opt = opt_iter.second;
+ ostringstream err;
+ std::string as_option("--");
+ as_option += opt.name;
+ option_name = opt.name;
+ if (ceph_argparse_witharg(
+ args, i, &val, err,
+ string(string("--default-") + opt.name).c_str(), (char*)NULL)) {
+ if (!err.str().empty()) {
+ error_message = err.str();
+ ret = -EINVAL;
+ break;
+ }
+ ret = _set_val(values, tracker, val, opt, CONF_DEFAULT, &error_message);
+ break;
+ } else if (opt.type == Option::TYPE_BOOL) {
+ int res;
+ if (ceph_argparse_binary_flag(args, i, &res, oss, as_option.c_str(),
+ (char*)NULL)) {
+ if (res == 0)
+ ret = _set_val(values, tracker, "false", opt, level, &error_message);
+ else if (res == 1)
+ ret = _set_val(values, tracker, "true", opt, level, &error_message);
+ else
+ ret = res;
+ break;
+ } else {
+ std::string no("--no-");
+ no += opt.name;
+ if (ceph_argparse_flag(args, i, no.c_str(), (char*)NULL)) {
+ ret = _set_val(values, tracker, "false", opt, level, &error_message);
+ break;
+ }
+ }
+ } else if (ceph_argparse_witharg(args, i, &val, err,
+ as_option.c_str(), (char*)NULL)) {
+ if (!err.str().empty()) {
+ error_message = err.str();
+ ret = -EINVAL;
+ break;
+ }
+ ret = _set_val(values, tracker, val, opt, level, &error_message);
+ break;
+ }
+ ++o;
+ }
+
+ if (ret < 0 || !error_message.empty()) {
+ ceph_assert(!option_name.empty());
+ if (oss) {
+ *oss << "Parse error setting " << option_name << " to '"
+ << val << "' using injectargs";
+ if (!error_message.empty()) {
+ *oss << " (" << error_message << ")";
+ }
+ *oss << ".\n";
+ } else {
+ cerr << "parse error setting '" << option_name << "' to '"
+ << val << "'";
+ if (!error_message.empty()) {
+ cerr << " (" << error_message << ")";
+ }
+ cerr << "\n" << std::endl;
+ }
+ }
+
+ if (o == schema.size()) {
+ // ignore
+ ++i;
+ }
+ return ret >= 0 ? 0 : ret;
+}
+
+int md_config_t::parse_injectargs(ConfigValues& values,
+ const ConfigTracker& tracker,
+ std::vector<const char*>& args,
+ std::ostream *oss)
+{
+ int ret = 0;
+ for (std::vector<const char*>::iterator i = args.begin(); i != args.end(); ) {
+ int r = parse_option(values, tracker, args, i, oss, CONF_OVERRIDE);
+ if (r < 0)
+ ret = r;
+ }
+ return ret;
+}
+
+void md_config_t::set_safe_to_start_threads()
+{
+ safe_to_start_threads = true;
+}
+
+void md_config_t::_clear_safe_to_start_threads()
+{
+ safe_to_start_threads = false;
+}
+
+int md_config_t::injectargs(ConfigValues& values,
+ const ConfigTracker& tracker,
+ const std::string& s, std::ostream *oss)
+{
+ int ret;
+ char b[s.length()+1];
+ strcpy(b, s.c_str());
+ std::vector<const char*> nargs;
+ char *p = b;
+ while (*p) {
+ nargs.push_back(p);
+ while (*p && *p != ' ') p++;
+ if (!*p)
+ break;
+ *p++ = 0;
+ while (*p && *p == ' ') p++;
+ }
+ ret = parse_injectargs(values, tracker, nargs, oss);
+ if (!nargs.empty()) {
+ *oss << " failed to parse arguments: ";
+ std::string prefix;
+ for (std::vector<const char*>::const_iterator i = nargs.begin();
+ i != nargs.end(); ++i) {
+ *oss << prefix << *i;
+ prefix = ",";
+ }
+ *oss << "\n";
+ ret = -EINVAL;
+ }
+ update_legacy_vals(values);
+ return ret;
+}
+
+void md_config_t::set_val_or_die(ConfigValues& values,
+ const ConfigTracker& tracker,
+ const std::string_view key,
+ const std::string &val)
+{
+ std::stringstream err;
+ int ret = set_val(values, tracker, key, val, &err);
+ if (ret != 0) {
+ std::cerr << "set_val_or_die(" << key << "): " << err.str();
+ }
+ ceph_assert(ret == 0);
+}
+
+int md_config_t::set_val(ConfigValues& values,
+ const ConfigTracker& tracker,
+ const std::string_view key, const char *val,
+ std::stringstream *err_ss)
+{
+ if (key.empty()) {
+ if (err_ss) *err_ss << "No key specified";
+ return -EINVAL;
+ }
+ if (!val) {
+ return -EINVAL;
+ }
+
+ std::string v(val);
+
+ string k(ConfFile::normalize_key_name(key));
+
+ const auto &opt_iter = schema.find(k);
+ if (opt_iter != schema.end()) {
+ const Option &opt = opt_iter->second;
+ std::string error_message;
+ int r = _set_val(values, tracker, v, opt, CONF_OVERRIDE, &error_message);
+ if (r >= 0) {
+ if (err_ss) *err_ss << "Set " << opt.name << " to " << v;
+ r = 0;
+ } else {
+ if (err_ss) *err_ss << error_message;
+ }
+ return r;
+ }
+
+ if (err_ss) *err_ss << "Configuration option not found: '" << key << "'";
+ return -ENOENT;
+}
+
+int md_config_t::rm_val(ConfigValues& values, const std::string_view key)
+{
+ return _rm_val(values, key, CONF_OVERRIDE);
+}
+
+void md_config_t::get_defaults_bl(const ConfigValues& values,
+ bufferlist *bl)
+{
+ if (defaults_bl.length() == 0) {
+ uint32_t n = 0;
+ bufferlist bl;
+ for (const auto &i : schema) {
+ ++n;
+ encode(i.second.name, bl);
+ auto [value, found] = values.get_value(i.second.name, CONF_DEFAULT);
+ if (found) {
+ encode(Option::to_str(value), bl);
+ } else {
+ string val;
+ conf_stringify(_get_val_default(i.second), &val);
+ encode(val, bl);
+ }
+ }
+ encode(n, defaults_bl);
+ defaults_bl.claim_append(bl);
+ }
+ *bl = defaults_bl;
+}
+
+void md_config_t::get_config_bl(
+ const ConfigValues& values,
+ uint64_t have_version,
+ bufferlist *bl,
+ uint64_t *got_version)
+{
+ if (values_bl.length() == 0) {
+ uint32_t n = 0;
+ bufferlist bl;
+ values.for_each([&](auto& name, auto& configs) {
+ if (name == "fsid" ||
+ name == "host") {
+ return;
+ }
+ ++n;
+ encode(name, bl);
+ encode((uint32_t)configs.size(), bl);
+ for (auto& j : configs) {
+ encode(j.first, bl);
+ encode(Option::to_str(j.second), bl);
+ }
+ });
+ // make sure overridden items appear, and include the default value
+ for (auto& i : ignored_mon_values) {
+ if (values.contains(i.first)) {
+ continue;
+ }
+ if (i.first == "fsid" ||
+ i.first == "host") {
+ continue;
+ }
+ const Option *opt = find_option(i.first);
+ if (!opt) {
+ continue;
+ }
+ ++n;
+ encode(i.first, bl);
+ encode((uint32_t)1, bl);
+ encode((int32_t)CONF_DEFAULT, bl);
+ string val;
+ conf_stringify(_get_val_default(*opt), &val);
+ encode(val, bl);
+ }
+ encode(n, values_bl);
+ values_bl.claim_append(bl);
+ encode(ignored_mon_values, values_bl);
+ ++values_bl_version;
+ }
+ if (have_version != values_bl_version) {
+ *bl = values_bl;
+ *got_version = values_bl_version;
+ }
+}
+
+std::optional<std::string> md_config_t::get_val_default(std::string_view key)
+{
+ std::string val;
+ const Option *opt = find_option(key);
+ if (opt && (conf_stringify(_get_val_default(*opt), &val) == 0)) {
+ return std::make_optional(std::move(val));
+ }
+ return std::nullopt;
+}
+
+int md_config_t::get_val(const ConfigValues& values,
+ const std::string_view key, char **buf, int len) const
+{
+ string k(ConfFile::normalize_key_name(key));
+ return _get_val_cstr(values, k, buf, len);
+}
+
+int md_config_t::get_val(
+ const ConfigValues& values,
+ const std::string_view key,
+ std::string *val) const
+{
+ return conf_stringify(get_val_generic(values, key), val);
+}
+
+Option::value_t md_config_t::get_val_generic(
+ const ConfigValues& values,
+ const std::string_view key) const
+{
+ return _get_val(values, key);
+}
+
+Option::value_t md_config_t::_get_val(
+ const ConfigValues& values,
+ const std::string_view key,
+ expand_stack_t *stack,
+ std::ostream *err) const
+{
+ if (key.empty()) {
+ return Option::value_t(boost::blank());
+ }
+
+ // In key names, leading and trailing whitespace are not significant.
+ string k(ConfFile::normalize_key_name(key));
+
+ const Option *o = find_option(k);
+ if (!o) {
+ // not a valid config option
+ return Option::value_t(boost::blank());
+ }
+
+ return _get_val(values, *o, stack, err);
+}
+
+Option::value_t md_config_t::_get_val(
+ const ConfigValues& values,
+ const Option& o,
+ expand_stack_t *stack,
+ std::ostream *err) const
+{
+ expand_stack_t a_stack;
+ if (!stack) {
+ stack = &a_stack;
+ }
+ return _expand_meta(values,
+ _get_val_nometa(values, o),
+ &o, stack, err);
+}
+
+Option::value_t md_config_t::_get_val_nometa(const ConfigValues& values,
+ const Option& o) const
+{
+ if (auto [value, found] = values.get_value(o.name, -1); found) {
+ return value;
+ } else {
+ return _get_val_default(o);
+ }
+}
+
+const Option::value_t& md_config_t::_get_val_default(const Option& o) const
+{
+ bool has_daemon_default = !boost::get<boost::blank>(&o.daemon_value);
+ if (is_daemon && has_daemon_default) {
+ return o.daemon_value;
+ } else {
+ return o.value;
+ }
+}
+
+void md_config_t::early_expand_meta(
+ const ConfigValues& values,
+ std::string &val,
+ std::ostream *err) const
+{
+ expand_stack_t stack;
+ Option::value_t v = _expand_meta(values,
+ Option::value_t(val),
+ nullptr, &stack, err);
+ conf_stringify(v, &val);
+}
+
+bool md_config_t::finalize_reexpand_meta(ConfigValues& values,
+ const ConfigTracker& tracker)
+{
+ std::vector<std::string> reexpands;
+ reexpands.swap(may_reexpand_meta);
+ for (auto& name : reexpands) {
+ // always refresh the options if they are in the may_reexpand_meta
+ // map, because the options may have already been expanded with old
+ // meta.
+ const auto &opt_iter = schema.find(name);
+ ceph_assert(opt_iter != schema.end());
+ const Option &opt = opt_iter->second;
+ _refresh(values, opt);
+ }
+
+ return !may_reexpand_meta.empty();
+}
+
+Option::value_t md_config_t::_expand_meta(
+ const ConfigValues& values,
+ const Option::value_t& in,
+ const Option *o,
+ expand_stack_t *stack,
+ std::ostream *err) const
+{
+ //cout << __func__ << " in '" << in << "' stack " << stack << std::endl;
+ if (!stack) {
+ return in;
+ }
+ const std::string *str = boost::get<const std::string>(&in);
+ if (!str) {
+ // strings only!
+ return in;
+ }
+
+ auto pos = str->find('$');
+ if (pos == std::string::npos) {
+ // no substitutions!
+ return in;
+ }
+
+ if (o) {
+ stack->push_back(make_pair(o, &in));
+ }
+ string out;
+ decltype(pos) last_pos = 0;
+ while (pos != std::string::npos) {
+ ceph_assert((*str)[pos] == '$');
+ if (pos > last_pos) {
+ out += str->substr(last_pos, pos - last_pos);
+ }
+
+ // try to parse the variable name into var, either \$\{(.+)\} or
+ // \$[a-z\_]+
+ const char *valid_chars = "abcdefghijklmnopqrstuvwxyz_";
+ string var;
+ size_t endpos = 0;
+ if ((*str)[pos+1] == '{') {
+ // ...${foo_bar}...
+ endpos = str->find_first_not_of(valid_chars, pos + 2);
+ if (endpos != std::string::npos &&
+ (*str)[endpos] == '}') {
+ var = str->substr(pos + 2, endpos - pos - 2);
+ endpos++;
+ }
+ } else {
+ // ...$foo...
+ endpos = str->find_first_not_of(valid_chars, pos + 1);
+ if (endpos != std::string::npos)
+ var = str->substr(pos + 1, endpos - pos - 1);
+ else
+ var = str->substr(pos + 1);
+ }
+ last_pos = endpos;
+
+ if (!var.size()) {
+ out += '$';
+ } else {
+ //cout << " found var " << var << std::endl;
+ // special metavariable?
+ if (var == "type") {
+ out += values.name.get_type_name();
+ } else if (var == "cluster") {
+ out += values.cluster;
+ } else if (var == "name") {
+ out += values.name.to_cstr();
+ } else if (var == "host") {
+ if (values.host == "") {
+ out += ceph_get_short_hostname();
+ } else {
+ out += values.host;
+ }
+ } else if (var == "num") {
+ out += values.name.get_id().c_str();
+ } else if (var == "id") {
+ out += values.name.get_id();
+ } else if (var == "pid") {
+ char *_pid = getenv("PID");
+ if (_pid) {
+ out += _pid;
+ } else {
+ out += stringify(getpid());
+ }
+ if (o) {
+ may_reexpand_meta.push_back(o->name);
+ }
+ } else if (var == "cctid") {
+ out += stringify((unsigned long long)this);
+ } else if (var == "home") {
+ const char *home = getenv("HOME");
+ out = home ? std::string(home) : std::string();
+ } else if (var == "programdata") {
+ const char *home = getenv("ProgramData");
+ out = home ? std::string(home) : std::string();
+ }else {
+ if (var == "data_dir") {
+ var = data_dir_option;
+ }
+ const Option *o = find_option(var);
+ if (!o) {
+ out += str->substr(pos, endpos - pos);
+ } else {
+ auto match = std::find_if(
+ stack->begin(), stack->end(),
+ [o](pair<const Option *,const Option::value_t*>& item) {
+ return item.first == o;
+ });
+ if (match != stack->end()) {
+ // substitution loop; break the cycle
+ if (err) {
+ *err << "variable expansion loop at " << var << "="
+ << Option::to_str(*match->second) << "\n"
+ << "expansion stack:\n";
+ for (auto i = stack->rbegin(); i != stack->rend(); ++i) {
+ *err << i->first->name << "="
+ << Option::to_str(*i->second) << "\n";
+ }
+ }
+ return Option::value_t(std::string("$") + o->name);
+ } else {
+ // recursively evaluate!
+ string n;
+ conf_stringify(_get_val(values, *o, stack, err), &n);
+ out += n;
+ }
+ }
+ }
+ }
+ pos = str->find('$', last_pos);
+ }
+ if (last_pos != std::string::npos) {
+ out += str->substr(last_pos);
+ }
+ if (o) {
+ stack->pop_back();
+ }
+
+ return Option::value_t(out);
+}
+
+int md_config_t::_get_val_cstr(
+ const ConfigValues& values,
+ const std::string& key, char **buf, int len) const
+{
+ if (key.empty())
+ return -EINVAL;
+
+ string val;
+ if (conf_stringify(_get_val(values, key), &val) == 0) {
+ int l = val.length() + 1;
+ if (len == -1) {
+ *buf = (char*)malloc(l);
+ if (!*buf)
+ return -ENOMEM;
+ strncpy(*buf, val.c_str(), l);
+ return 0;
+ }
+ snprintf(*buf, len, "%s", val.c_str());
+ return (l > len) ? -ENAMETOOLONG : 0;
+ }
+
+ // couldn't find a configuration option with key 'k'
+ return -ENOENT;
+}
+
+void md_config_t::get_all_keys(std::vector<std::string> *keys) const {
+ const std::string negative_flag_prefix("no_");
+
+ keys->clear();
+ keys->reserve(schema.size());
+ for (const auto &i: schema) {
+ const Option &opt = i.second;
+ keys->push_back(opt.name);
+ if (opt.type == Option::TYPE_BOOL) {
+ keys->push_back(negative_flag_prefix + opt.name);
+ }
+ }
+}
+
+/* The order of the sections here is important. The first section in the
+ * vector is the "highest priority" section; if we find it there, we'll stop
+ * looking. The lowest priority section is the one we look in only if all
+ * others had nothing. This should always be the global section.
+ */
+std::vector <std::string>
+md_config_t::get_my_sections(const ConfigValues& values) const
+{
+ return {values.name.to_str(),
+ values.name.get_type_name().data(),
+ "global"};
+}
+
+// Return a list of all sections
+int md_config_t::get_all_sections(std::vector <std::string> &sections) const
+{
+ for (auto [section_name, section] : cf) {
+ sections.push_back(section_name);
+ std::ignore = section;
+ }
+ return 0;
+}
+
+int md_config_t::get_val_from_conf_file(
+ const ConfigValues& values,
+ const std::vector <std::string> &sections,
+ const std::string_view key,
+ std::string &out,
+ bool emeta) const
+{
+ int r = _get_val_from_conf_file(sections, key, out);
+ if (r < 0) {
+ return r;
+ }
+ if (emeta) {
+ expand_stack_t stack;
+ auto v = _expand_meta(values, Option::value_t(out), nullptr, &stack, nullptr);
+ conf_stringify(v, &out);
+ }
+ return 0;
+}
+
+int md_config_t::_get_val_from_conf_file(
+ const std::vector <std::string> &sections,
+ const std::string_view key,
+ std::string &out) const
+{
+ for (auto &s : sections) {
+ int ret = cf.read(s, key, out);
+ if (ret == 0) {
+ return 0;
+ } else if (ret != -ENOENT) {
+ return ret;
+ }
+ }
+ return -ENOENT;
+}
+
+int md_config_t::_set_val(
+ ConfigValues& values,
+ const ConfigTracker& observers,
+ const std::string &raw_val,
+ const Option &opt,
+ int level,
+ std::string *error_message)
+{
+ Option::value_t new_value;
+ ceph_assert(error_message);
+ int r = opt.parse_value(raw_val, &new_value, error_message);
+ if (r < 0) {
+ return r;
+ }
+
+ // unsafe runtime change?
+ if (!opt.can_update_at_runtime() &&
+ safe_to_start_threads &&
+ !observers.is_tracking(opt.name)) {
+ // accept value if it is not actually a change
+ if (new_value != _get_val_nometa(values, opt)) {
+ *error_message = string("Configuration option '") + opt.name +
+ "' may not be modified at runtime";
+ return -EPERM;
+ }
+ }
+
+ // Apply the value to its entry in the `values` map
+ auto result = values.set_value(opt.name, std::move(new_value), level);
+ switch (result) {
+ case ConfigValues::SET_NO_CHANGE:
+ break;
+ case ConfigValues::SET_NO_EFFECT:
+ values_bl.clear();
+ break;
+ case ConfigValues::SET_HAVE_EFFECT:
+ values_bl.clear();
+ _refresh(values, opt);
+ break;
+ }
+ return result;
+}
+
+void md_config_t::_refresh(ConfigValues& values, const Option& opt)
+{
+ // Apply the value to its legacy field, if it has one
+ auto legacy_ptr_iter = legacy_values.find(std::string(opt.name));
+ if (legacy_ptr_iter != legacy_values.end()) {
+ update_legacy_val(values, opt, legacy_ptr_iter->second);
+ }
+ // Was this a debug_* option update?
+ if (opt.subsys >= 0) {
+ string actual_val;
+ conf_stringify(_get_val(values, opt), &actual_val);
+ values.set_logging(opt.subsys, actual_val.c_str());
+ } else {
+ // normal option, advertise the change.
+ values.changed.insert(opt.name);
+ }
+}
+
+int md_config_t::_rm_val(ConfigValues& values,
+ const std::string_view key,
+ int level)
+{
+ if (schema.count(key) == 0) {
+ return -EINVAL;
+ }
+ auto ret = values.rm_val(std::string{key}, level);
+ if (ret < 0) {
+ return ret;
+ }
+ if (ret == ConfigValues::SET_HAVE_EFFECT) {
+ _refresh(values, *find_option(key));
+ }
+ values_bl.clear();
+ return 0;
+}
+
+namespace {
+template<typename Size>
+struct get_size_visitor : public boost::static_visitor<Size>
+{
+ get_size_visitor() {}
+
+ template<typename T>
+ Size operator()(const T&) const {
+ return -1;
+ }
+ Size operator()(const Option::size_t& sz) const {
+ return static_cast<Size>(sz.value);
+ }
+ Size operator()(const Size& v) const {
+ return v;
+ }
+};
+
+/**
+ * Handles assigning from a variant-of-types to a variant-of-pointers-to-types
+ */
+template<class Config>
+class assign_visitor : public boost::static_visitor<>
+{
+ Config *conf;
+ Option::value_t val;
+ public:
+
+ assign_visitor(Config *conf_, Option::value_t val_)
+ : conf(conf_), val(val_)
+ {}
+
+ template <typename T>
+ void operator()(T Config::* ptr) const
+ {
+ T *member = const_cast<T *>(&(conf->*(boost::get<const T Config::*>(ptr))));
+
+ *member = boost::get<T>(val);
+ }
+ void operator()(uint64_t Config::* ptr) const
+ {
+ using T = uint64_t;
+ auto member = const_cast<T*>(&(conf->*(boost::get<const T Config::*>(ptr))));
+ *member = boost::apply_visitor(get_size_visitor<T>{}, val);
+ }
+ void operator()(int64_t Config::* ptr) const
+ {
+ using T = int64_t;
+ auto member = const_cast<T*>(&(conf->*(boost::get<const T Config::*>(ptr))));
+ *member = boost::apply_visitor(get_size_visitor<T>{}, val);
+ }
+};
+} // anonymous namespace
+
+void md_config_t::update_legacy_vals(ConfigValues& values)
+{
+ for (const auto &i : legacy_values) {
+ const auto &name = i.first;
+ const auto &option = schema.at(name);
+ auto ptr = i.second;
+ update_legacy_val(values, option, ptr);
+ }
+}
+
+void md_config_t::update_legacy_val(ConfigValues& values,
+ const Option &opt,
+ md_config_t::member_ptr_t member_ptr)
+{
+ Option::value_t v = _get_val(values, opt);
+ boost::apply_visitor(assign_visitor(&values, v), member_ptr);
+}
+
+static void dump(Formatter *f, int level, Option::value_t in)
+{
+ if (const bool *v = boost::get<const bool>(&in)) {
+ f->dump_bool(ceph_conf_level_name(level), *v);
+ } else if (const int64_t *v = boost::get<const int64_t>(&in)) {
+ f->dump_int(ceph_conf_level_name(level), *v);
+ } else if (const uint64_t *v = boost::get<const uint64_t>(&in)) {
+ f->dump_unsigned(ceph_conf_level_name(level), *v);
+ } else if (const double *v = boost::get<const double>(&in)) {
+ f->dump_float(ceph_conf_level_name(level), *v);
+ } else {
+ f->dump_stream(ceph_conf_level_name(level)) << Option::to_str(in);
+ }
+}
+
+void md_config_t::diff(
+ const ConfigValues& values,
+ Formatter *f,
+ string name) const
+{
+ values.for_each([this, f, &values] (auto& name, auto& configs) {
+ if (configs.empty()) {
+ return;
+ }
+ f->open_object_section(std::string{name}.c_str());
+ const Option *o = find_option(name);
+ if (configs.size() &&
+ configs.begin()->first != CONF_DEFAULT) {
+ // show compiled-in default only if an override default wasn't provided
+ dump(f, CONF_DEFAULT, _get_val_default(*o));
+ }
+ for (auto& j : configs) {
+ dump(f, j.first, j.second);
+ }
+ dump(f, CONF_FINAL, _get_val(values, *o));
+ f->close_section();
+ });
+}
+
+void md_config_t::complain_about_parse_error(CephContext *cct)
+{
+ ::complain_about_parse_error(cct, parse_error);
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-10 21:48:09 +0000