libmultipath/propsel: (re)use static const vars for origin
authorMartin Wilck <mwilck@suse.com>
Tue, 27 Mar 2018 21:50:53 +0000 (23:50 +0200)
committerChristophe Varoqui <christophe.varoqui@opensvc.com>
Fri, 11 May 2018 08:42:24 +0000 (10:42 +0200)
Define a set of "origin" strings and reuse them throughout the code.
That avoids duplication and makes it easier to verify that we use
consistent messages.

Signed-off-by: Martin Wilck <mwilck@suse.com>
libmultipath/propsel.c

index dc24450..2d3b7ad 100644 (file)
@@ -44,7 +44,19 @@ do {                                                                 \
        }                                                               \
 } while(0)
 
-static char default_origin[] = "(setting: multipath internal)";
+static const char default_origin[] = "(setting: multipath internal)";
+static const char hwe_origin[] =
+       "(setting: storage device configuration)";
+static const char multipaths_origin[] =
+       "(setting: multipath.conf multipaths section)";
+static const char conf_origin[] =
+       "(setting: multipath.conf defaults/devices section)";
+static const char overrides_origin[] =
+       "(setting: multipath.conf overrides section)";
+static const char cmdline_origin[] =
+       "(setting: multipath command line [-p] flag)";
+static const char autodetect_origin[] =
+       "(setting: storage device autodetected)";
 
 #define do_default(dest, value)                                                \
 do {                                                                   \
@@ -53,24 +65,24 @@ do {                                                                        \
 } while(0)
 
 #define mp_set_mpe(var)                                                        \
-do_set(var, mp->mpe, mp->var, "(setting: multipath.conf multipaths section)")
+do_set(var, mp->mpe, mp->var, multipaths_origin)
 #define mp_set_hwe(var)                                                        \
-do_set(var, mp->hwe, mp->var, "(setting: storage device configuration)")
+do_set(var, mp->hwe, mp->var, hwe_origin)
 #define mp_set_ovr(var)                                                        \
-do_set(var, conf->overrides, mp->var, "(setting: multipath.conf overrides section)")
+do_set(var, conf->overrides, mp->var, overrides_origin)
 #define mp_set_conf(var)                                               \
-do_set(var, conf, mp->var, "(setting: multipath.conf defaults/devices section)")
+do_set(var, conf, mp->var, conf_origin)
 #define mp_set_default(var, value)                                     \
 do_default(mp->var, value)
 
 #define pp_set_mpe(var)                                                        \
-do_set(var, mpe, pp->var, "(setting: multipath.conf multipaths section)")
+do_set(var, mpe, pp->var, multipaths_origin)
 #define pp_set_hwe(var)                                                        \
-do_set(var, pp->hwe, pp->var, "(setting: storage device configuration)")
+do_set(var, pp->hwe, pp->var, hwe_origin)
 #define pp_set_conf(var)                                               \
-do_set(var, conf, pp->var, "(setting: multipath.conf defaults/devices section)")
+do_set(var, conf, pp->var, conf_origin)
 #define pp_set_ovr(var)                                                        \
-do_set(var, conf->overrides, pp->var, "(setting: multipath.conf overrides section)")
+do_set(var, conf->overrides, pp->var, overrides_origin)
 #define pp_set_default(var, value)                                     \
 do_default(pp->var, value)
 
@@ -101,7 +113,7 @@ do {                                                                        \
 
 int select_mode(struct config *conf, struct multipath *mp)
 {
-       char *origin;
+       const char *origin;
 
        set_attr_mpe(mode, ATTR_MODE);
        set_attr_conf(mode, ATTR_MODE);
@@ -114,7 +126,7 @@ out:
 
 int select_uid(struct config *conf, struct multipath *mp)
 {
-       char *origin;
+       const char *origin;
 
        set_attr_mpe(uid, ATTR_UID);
        set_attr_conf(uid, ATTR_UID);
@@ -127,7 +139,7 @@ out:
 
 int select_gid(struct config *conf, struct multipath *mp)
 {
-       char *origin;
+       const char *origin;
 
        set_attr_mpe(gid, ATTR_GID);
        set_attr_conf(gid, ATTR_GID);
@@ -145,7 +157,8 @@ out:
  */
 int select_rr_weight(struct config *conf, struct multipath * mp)
 {
-       char *origin, buff[13];
+       const char *origin;
+       char buff[13];
 
        mp_set_mpe(rr_weight);
        mp_set_ovr(rr_weight);
@@ -160,7 +173,8 @@ out:
 
 int select_pgfailback(struct config *conf, struct multipath * mp)
 {
-       char *origin, buff[13];
+       const char *origin;
+       char buff[13];
 
        mp_set_mpe(pgfailback);
        mp_set_ovr(pgfailback);
@@ -175,11 +189,12 @@ out:
 
 int select_pgpolicy(struct config *conf, struct multipath * mp)
 {
-       char *origin, buff[POLICY_NAME_SIZE];
+       const char *origin;
+       char buff[POLICY_NAME_SIZE];
 
        if (conf->pgpolicy_flag > 0) {
                mp->pgpolicy = conf->pgpolicy_flag;
-               origin = "(setting: multipath command line [-p] flag)";
+               origin = cmdline_origin;
                goto out;
        }
        mp_set_mpe(pgpolicy);
@@ -196,7 +211,7 @@ out:
 
 int select_selector(struct config *conf, struct multipath * mp)
 {
-       char *origin;
+       const char *origin;
 
        mp_set_mpe(selector);
        mp_set_ovr(selector);
@@ -213,7 +228,7 @@ out:
 static void
 select_alias_prefix (struct config *conf, struct multipath * mp)
 {
-       char *origin;
+       const char *origin;
 
        mp_set_ovr(alias_prefix);
        mp_set_hwe(alias_prefix);
@@ -228,17 +243,17 @@ static int
 want_user_friendly_names(struct config *conf, struct multipath * mp)
 {
 
-       char *origin;
+       const char *origin;
        int user_friendly_names;
 
        do_set(user_friendly_names, mp->mpe, user_friendly_names,
-              "(setting: multipath.conf multipaths section)");
+              multipaths_origin);
        do_set(user_friendly_names, conf->overrides, user_friendly_names,
-              "(setting: multipath.conf overrides section)");
+              overrides_origin);
        do_set(user_friendly_names, mp->hwe, user_friendly_names,
-              "(setting: storage device configuration)");
+              hwe_origin);
        do_set(user_friendly_names, conf, user_friendly_names,
-              "(setting: multipath.conf defaults/devices section)");
+              conf_origin);
        do_default(user_friendly_names, DEFAULT_USER_FRIENDLY_NAMES);
 out:
        condlog(3, "%s: user_friendly_names = %s %s", mp->wwid,
@@ -249,11 +264,11 @@ out:
 
 int select_alias(struct config *conf, struct multipath * mp)
 {
-       char *origin = NULL;
+       const char *origin = NULL;
 
        if (mp->mpe && mp->mpe->alias) {
                mp->alias = STRDUP(mp->mpe->alias);
-               origin = "(setting: multipath.conf multipaths section)";
+               origin = multipaths_origin;
                goto out;
        }
 
@@ -342,7 +357,7 @@ void reconcile_features_with_options(const char *id, char **features, int* no_pa
 
 int select_features(struct config *conf, struct multipath *mp)
 {
-       char *origin;
+       const char *origin;
 
        mp_set_mpe(features);
        mp_set_ovr(features);
@@ -441,11 +456,12 @@ check_rdac(struct path * pp)
 
 int select_checker(struct config *conf, struct path *pp)
 {
-       char *origin, *checker_name;
+       const char *origin;
+       char *checker_name;
        struct checker * c = &pp->checker;
 
        if (pp->detect_checker == DETECT_CHECKER_ON) {
-               origin = "(setting: storage device autodetected)";
+               origin = autodetect_origin;
                if (check_rdac(pp)) {
                        checker_name = RDAC;
                        goto out;
@@ -454,32 +470,32 @@ int select_checker(struct config *conf, struct path *pp)
                        goto out;
                }
        }
-       do_set(checker_name, conf->overrides, checker_name, "(setting: multipath.conf overrides section)");
-       do_set(checker_name, pp->hwe, checker_name, "(setting: storage device configuration)");
-       do_set(checker_name, conf, checker_name, "(setting: multipath.conf defaults/devices section)");
+       do_set(checker_name, conf->overrides, checker_name, overrides_origin);
+       do_set(checker_name, pp->hwe, checker_name, hwe_origin);
+       do_set(checker_name, conf, checker_name, conf_origin);
        do_default(checker_name, DEFAULT_CHECKER);
 out:
        checker_get(conf->multipath_dir, c, checker_name);
        condlog(3, "%s: path_checker = %s %s", pp->dev, c->name, origin);
        if (conf->checker_timeout) {
                c->timeout = conf->checker_timeout;
-               condlog(3, "%s: checker timeout = %u s (setting: multipath.conf defaults/devices section)",
-                               pp->dev, c->timeout);
+               condlog(3, "%s: checker timeout = %u s %s",
+                       pp->dev, c->timeout, conf_origin);
        }
        else if (sysfs_get_timeout(pp, &c->timeout) > 0)
                condlog(3, "%s: checker timeout = %u s (setting: kernel sysfs)",
-                               pp->dev, c->timeout);
+                       pp->dev, c->timeout);
        else {
                c->timeout = DEF_TIMEOUT;
-               condlog(3, "%s: checker timeout = %u s (setting: multipath internal)",
-                               pp->dev, c->timeout);
+               condlog(3, "%s: checker timeout = %u s %s",
+                       pp->dev, c->timeout, default_origin);
        }
        return 0;
 }
 
 int select_getuid(struct config *conf, struct path *pp)
 {
-       char *origin;
+       const char *origin;
 
        pp->uid_attribute = parse_uid_attribute_by_attrs(conf->uid_attrs, pp->dev);
        if (pp->uid_attribute) {
@@ -531,24 +547,24 @@ do {                                                                      \
 
 int select_prio(struct config *conf, struct path *pp)
 {
-       char *origin;
+       const char *origin;
        struct mpentry * mpe;
        struct prio * p = &pp->prio;
 
        if (pp->detect_prio == DETECT_PRIO_ON) {
                detect_prio(conf, pp);
                if (prio_selected(p)) {
-                       origin = "(setting: storage device autodetected)";
+                       origin = autodetect_origin;
                        goto out;
                }
        }
        mpe = find_mpe(conf->mptable, pp->wwid);
-       set_prio(conf->multipath_dir, mpe, "(setting: multipath.conf multipaths section)");
-       set_prio(conf->multipath_dir, conf->overrides, "(setting: multipath.conf overrides section)");
-       set_prio(conf->multipath_dir, pp->hwe, "(setting: storage device configuration)");
-       set_prio(conf->multipath_dir, conf, "(setting: multipath.conf defaults/devices section)");
+       set_prio(conf->multipath_dir, mpe, multipaths_origin);
+       set_prio(conf->multipath_dir, conf->overrides, overrides_origin);
+       set_prio(conf->multipath_dir, pp->hwe, hwe_origin);
+       set_prio(conf->multipath_dir, conf, conf_origin);
        prio_get(conf->multipath_dir, p, DEFAULT_PRIO, DEFAULT_PRIO_ARGS);
-       origin = "(setting: multipath internal)";
+       origin = default_origin;
 out:
        /*
         * fetch tpgs mode for alua, if its not already obtained
@@ -568,7 +584,7 @@ out:
 
 int select_no_path_retry(struct config *conf, struct multipath *mp)
 {
-       char *origin = NULL;
+       const char *origin = NULL;
        char buff[12];
 
        if (mp->disable_queueing) {
@@ -586,20 +602,20 @@ out:
                condlog(3, "%s: no_path_retry = %s %s", mp->alias, buff,
                        origin);
        else
-               condlog(3, "%s: no_path_retry = undef (setting: multipath internal)",
-                       mp->alias);
+               condlog(3, "%s: no_path_retry = undef %s",
+                       mp->alias, default_origin);
        return 0;
 }
 
 int
 select_minio_rq (struct config *conf, struct multipath * mp)
 {
-       char *origin;
+       const char *origin;
 
-       do_set(minio_rq, mp->mpe, mp->minio, "(setting: multipath.conf multipaths section)");
-       do_set(minio_rq, conf->overrides, mp->minio, "(setting: multipath.conf overrides section)");
-       do_set(minio_rq, mp->hwe, mp->minio, "(setting: storage device configuration)");
-       do_set(minio_rq, conf, mp->minio, "(setting: multipath.conf defaults/devices section)");
+       do_set(minio_rq, mp->mpe, mp->minio, multipaths_origin);
+       do_set(minio_rq, conf->overrides, mp->minio, overrides_origin);
+       do_set(minio_rq, mp->hwe, mp->minio, hwe_origin);
+       do_set(minio_rq, conf, mp->minio, conf_origin);
        do_default(mp->minio, DEFAULT_MINIO_RQ);
 out:
        condlog(3, "%s: minio = %i %s", mp->alias, mp->minio, origin);
@@ -609,7 +625,7 @@ out:
 int
 select_minio_bio (struct config *conf, struct multipath * mp)
 {
-       char *origin;
+       const char *origin;
 
        mp_set_mpe(minio);
        mp_set_ovr(minio);
@@ -633,7 +649,8 @@ int select_minio(struct config *conf, struct multipath *mp)
 
 int select_fast_io_fail(struct config *conf, struct multipath *mp)
 {
-       char *origin, buff[12];
+       const char *origin;
+       char buff[12];
 
        mp_set_ovr(fast_io_fail);
        mp_set_hwe(fast_io_fail);
@@ -647,7 +664,8 @@ out:
 
 int select_dev_loss(struct config *conf, struct multipath *mp)
 {
-       char *origin, buff[12];
+       const char *origin;
+       char buff[12];
 
        mp_set_ovr(dev_loss);
        mp_set_hwe(dev_loss);
@@ -662,7 +680,7 @@ out:
 
 int select_flush_on_last_del(struct config *conf, struct multipath *mp)
 {
-       char *origin;
+       const char *origin;
 
        mp_set_mpe(flush_on_last_del);
        mp_set_ovr(flush_on_last_del);
@@ -677,12 +695,13 @@ out:
 
 int select_reservation_key(struct config *conf, struct multipath *mp)
 {
-       char *origin, buff[PRKEY_SIZE];
+       const char *origin;
+       char buff[PRKEY_SIZE];
        char *from_file = "";
        uint64_t prkey = 0;
 
-       do_prkey_set(mp->mpe, "(setting: multipath.conf multipaths section)");
-       do_prkey_set(conf, "(setting: multipath.conf defaults/devices section)");
+       do_prkey_set(mp->mpe, multipaths_origin);
+       do_prkey_set(conf, conf_origin);
        put_be64(mp->reservation_key, 0);
        mp->prkey_source = PRKEY_SOURCE_NONE;
        return 0;
@@ -703,7 +722,7 @@ out:
 
 int select_retain_hwhandler(struct config *conf, struct multipath *mp)
 {
-       char *origin;
+       const char *origin;
        unsigned int minv_dm_retain[3] = {1, 5, 0};
 
        if (!VERSION_GE(conf->version, minv_dm_retain)) {
@@ -729,7 +748,7 @@ out:
 
 int select_detect_prio(struct config *conf, struct path *pp)
 {
-       char *origin;
+       const char *origin;
 
        pp_set_ovr(detect_prio);
        pp_set_hwe(detect_prio);
@@ -743,7 +762,7 @@ out:
 
 int select_detect_checker(struct config *conf, struct path *pp)
 {
-       char *origin;
+       const char *origin;
 
        pp_set_ovr(detect_checker);
        pp_set_hwe(detect_checker);
@@ -758,7 +777,7 @@ out:
 
 int select_deferred_remove(struct config *conf, struct multipath *mp)
 {
-       char *origin;
+       const char *origin;
 
 #ifndef LIBDM_API_DEFERRED
        mp->deferred_remove = DEFERRED_REMOVE_OFF;
@@ -783,7 +802,8 @@ out:
 
 int select_delay_watch_checks(struct config *conf, struct multipath *mp)
 {
-       char *origin, buff[12];
+       const char *origin;
+       char buff[12];
 
        mp_set_mpe(delay_watch_checks);
        mp_set_ovr(delay_watch_checks);
@@ -798,7 +818,8 @@ out:
 
 int select_delay_wait_checks(struct config *conf, struct multipath *mp)
 {
-       char *origin, buff[12];
+       const char *origin;
+       char buff[12];
 
        mp_set_mpe(delay_wait_checks);
        mp_set_ovr(delay_wait_checks);
@@ -814,7 +835,8 @@ out:
 
 int select_marginal_path_err_sample_time(struct config *conf, struct multipath *mp)
 {
-       char *origin, buff[12];
+       const char *origin;
+       char buff[12];
 
        mp_set_mpe(marginal_path_err_sample_time);
        mp_set_ovr(marginal_path_err_sample_time);
@@ -830,7 +852,8 @@ out:
 
 int select_marginal_path_err_rate_threshold(struct config *conf, struct multipath *mp)
 {
-       char *origin, buff[12];
+       const char *origin;
+       char buff[12];
 
        mp_set_mpe(marginal_path_err_rate_threshold);
        mp_set_ovr(marginal_path_err_rate_threshold);
@@ -846,7 +869,8 @@ out:
 
 int select_marginal_path_err_recheck_gap_time(struct config *conf, struct multipath *mp)
 {
-       char *origin, buff[12];
+       const char *origin;
+       char buff[12];
 
        mp_set_mpe(marginal_path_err_recheck_gap_time);
        mp_set_ovr(marginal_path_err_recheck_gap_time);
@@ -862,7 +886,8 @@ out:
 
 int select_marginal_path_double_failed_time(struct config *conf, struct multipath *mp)
 {
-       char *origin, buff[12];
+       const char *origin;
+       char buff[12];
 
        mp_set_mpe(marginal_path_double_failed_time);
        mp_set_ovr(marginal_path_double_failed_time);
@@ -878,7 +903,7 @@ out:
 
 int select_skip_kpartx (struct config *conf, struct multipath * mp)
 {
-       char *origin;
+       const char *origin;
 
        mp_set_mpe(skip_kpartx);
        mp_set_ovr(skip_kpartx);
@@ -894,7 +919,7 @@ out:
 
 int select_max_sectors_kb(struct config *conf, struct multipath * mp)
 {
-       char *origin;
+       const char *origin;
 
        mp_set_mpe(max_sectors_kb);
        mp_set_ovr(max_sectors_kb);
@@ -915,7 +940,8 @@ out:
 
 int select_ghost_delay (struct config *conf, struct multipath * mp)
 {
-       char *origin, buff[12];
+       const char *origin;
+       char buff[12];
 
        mp_set_mpe(ghost_delay);
        mp_set_ovr(ghost_delay);