Make glusterfsd binary print statedump & xlator dir

The glusterd2 needs following options, some of which are provided by
gluster CLI today:

--print-xlatordir
--print-statedumpdir
--print-logdir

However, the CLI package need not be present on the machine running
glusterd2. This change adds the above CLI options to glusterfsd binary
which glusterd2 depends on.

Reverts 9a1ae47c8d60836ae0628a04a153f28c1085c0e8

Related changes:
https://review.gluster.org/#/c/19882/
https://github.com/gluster/glusterd2/pull/663

Updates: bz#1193929
Change-Id: I18c123b0d3350d2bd4f2400783e3b94e402a4e29
Signed-off-by: Prashanth Pai <ppai@redhat.com>

2 files changed, 46 insertions, 0 deletions

diff --git a/glusterfsd/src/glusterfsd.c b/glusterfsd/src/glusterfsd.c
index cb744f04fdf..b5b8e4d30a7 100644
--- a/glusterfsd/src/glusterfsd.c
+++ b/glusterfsd/src/glusterfsd.c
@@ -166,6 +166,13 @@ static struct argp_option gf_options[] = {
          "Validate the netgroups file and print it out"},
         {"print-exports", ARGP_PRINT_EXPORTS, "EXPORTS-FILE", 0,
         "Validate the exports file and print it out"},
+        {"print-xlatordir", ARGP_PRINT_XLATORDIR_KEY, 0, OPTION_ARG_OPTIONAL,
+         "Print xlator directory path"},
+        {"print-statedumpdir", ARGP_PRINT_STATEDUMPDIR_KEY, 0,
+          OPTION_ARG_OPTIONAL,
+         "Print directory path in which statedumps shall be generated"},
+        {"print-logdir", ARGP_PRINT_LOGDIR_KEY, 0, OPTION_ARG_OPTIONAL,
+         "Print path of default log directory"},
 
         {"volfile-max-fetch-attempts", ARGP_VOLFILE_MAX_FETCH_ATTEMPTS, "0",
          OPTION_HIDDEN, "Maximum number of attempts to fetch the volfile"},
@@ -913,6 +920,18 @@ parse_opts (int key, char *arg, struct argp_state *state)
                 cmd_args->print_exports = arg;
                 break;
 
+        case ARGP_PRINT_XLATORDIR_KEY:
+                cmd_args->print_xlatordir = _gf_true;
+                break;
+
+        case ARGP_PRINT_STATEDUMPDIR_KEY:
+                cmd_args->print_statedumpdir = _gf_true;
+                break;
+
+        case ARGP_PRINT_LOGDIR_KEY:
+                cmd_args->print_logdir = _gf_true;
+                break;
+
         case ARGP_MAC_COMPAT_KEY:
                 if (!arg)
                         arg = "on";
@@ -1982,6 +2001,13 @@ parse_cmdline (int argc, char *argv[], glusterfs_ctx_t *ctx)
         }
 
         argp_parse (&argp, argc, argv, ARGP_IN_ORDER, NULL, cmd_args);
+
+        if (cmd_args->print_xlatordir || cmd_args->print_statedumpdir ||
+            cmd_args->print_logdir) {
+                /* Just print, nothing else to do */
+                goto out;
+        }
+
         if (cmd_args->print_netgroups) {
                 /* When this option is set we don't want to do anything else
                  * except for printing & verifying the netgroups file.
@@ -2578,6 +2604,23 @@ main (int argc, char *argv[])
         if (ret)
                 goto out;
         cmd = &ctx->cmd_args;
+
+        if (cmd->print_xlatordir) {
+                /* XLATORDIR passed through a -D flag to GCC */
+                printf ("%s\n", XLATORDIR);
+                goto out;
+        }
+
+        if (cmd->print_statedumpdir) {
+                printf ("%s\n", DEFAULT_VAR_RUN_DIRECTORY);
+                goto out;
+        }
+
+        if (cmd->print_logdir) {
+                printf ("%s\n", DEFAULT_LOG_FILE_DIRECTORY);
+                goto out;
+        }
+
         if (cmd->print_netgroups) {
                 /* If this option is set we want to print & verify the file,
                  * set the return value (exit code in this case) and exit.
diff --git a/glusterfsd/src/glusterfsd.h b/glusterfsd/src/glusterfsd.h
index 38785441817..2a03ec09fa2 100644
--- a/glusterfsd/src/glusterfsd.h
+++ b/glusterfsd/src/glusterfsd.h
@@ -102,6 +102,9 @@ enum argp_option_keys {
         ARGP_FUSE_EVENT_HISTORY_KEY       = 180,
         ARGP_THIN_CLIENT_KEY              = 181,
         ARGP_READER_THREAD_COUNT_KEY      = 182,
+        ARGP_PRINT_XLATORDIR_KEY          = 183,
+        ARGP_PRINT_STATEDUMPDIR_KEY       = 184,
+        ARGP_PRINT_LOGDIR_KEY             = 185,
 };
 
 struct _gfd_vol_top_priv {