cli/glusterd: volume status modification

* Method of getting mount details of brick has been
  changed from direct reading of /etc/mtab to using
  libc's <mntent.h>, providing a fairly portable
  version independent of different linux distributions.
  It is only supported on Linux though.

* Wrong fs type (rootfs for /) in fedora-based
  distributions has been fixed.

* Allows options (detail, mem, fd, et al) to "all" volumes.

* Use of the fnmatch's GNU extension flag,
  FNM_LEADING_DIR is restricted to Linux hosts only.
  In case of non-Linux hosts, partial match functionality
  is absent.

Change-Id: I102ce808c192ef635c2536a2167101be0aa0fc50
BUG: 786367
Signed-off-by: Rajesh Amaravathi <rajesh@redhat.com>
Reviewed-on: http://review.gluster.com/2705
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Jeff Darcy <jdarcy@redhat.com>
Reviewed-by: Vijay Bellur <vijay@gluster.com>

4 files changed, 92 insertions, 70 deletions

diff --git a/cli/src/cli-cmd-parser.c b/cli/src/cli-cmd-parser.c
index b4c86bf1abd..e483a1bd477 100644
--- a/cli/src/cli-cmd-parser.c
+++ b/cli/src/cli-cmd-parser.c
@@ -1839,39 +1839,42 @@ out:
         return ret;
 }
 
-gf_boolean_t
-cli_cmd_validate_statusop (const char *arg)
+uint32_t
+cli_cmd_get_statusop (const char *arg)
 {
-        char    *opwords[] = {"misc-details", "mem", "clients", "fd", "inode",
-                              "callpool", NULL};
-        char    *w = NULL;
+        int        i         = 0;
+        uint32_t   ret       = GF_CLI_STATUS_NONE;
+        char      *w         = NULL;
+        char      *opwords[] = {"detail", "mem", "clients", "fd",
+                                "inode", "callpool", NULL};
+        struct {
+                char      *opname;
+                uint32_t   opcode;
+        } optable[] = {
+                { "detail",   GF_CLI_STATUS_DETAIL   },
+                { "mem",      GF_CLI_STATUS_MEM      },
+                { "clients",  GF_CLI_STATUS_CLIENTS  },
+                { "fd",       GF_CLI_STATUS_FD       },
+                { "inode",    GF_CLI_STATUS_INODE    },
+                { "callpool", GF_CLI_STATUS_CALLPOOL },
+                { NULL }
+        };
 
         w = str_getunamb (arg, opwords);
         if (!w) {
-                gf_log ("cli", GF_LOG_ERROR, "Unknown status op  %s",
-                        arg);
-                return _gf_false;
+                gf_log ("cli", GF_LOG_DEBUG,
+                        "Not a status op  %s", arg);
+                goto out;
         }
-        return _gf_true;
-}
 
-int
-cli_cmd_get_statusop (const char *arg)
-{
-        int ret = GF_CLI_STATUS_INVAL;
-        if (!strcmp (arg, "misc-details"))
-                ret = GF_CLI_STATUS_DETAIL;
-        else if (!strcmp (arg, "mem"))
-                ret = GF_CLI_STATUS_MEM;
-        else if (!strcmp (arg, "clients"))
-                ret = GF_CLI_STATUS_CLIENTS;
-        else if (!strcmp (arg, "inode"))
-                ret = GF_CLI_STATUS_INODE;
-        else if (!strcmp (arg, "fd"))
-                ret = GF_CLI_STATUS_FD;
-        else if (!strcmp (arg, "callpool"))
-                ret = GF_CLI_STATUS_CALLPOOL;
+        for (i = 0; optable[i].opname; i++) {
+                if (!strcmp (w, optable[i].opname)) {
+                        ret = optable[i].opcode;
+                        break;
+                }
+        }
 
+ out:
         return ret;
 }
 
@@ -1879,9 +1882,9 @@ int
 cli_cmd_volume_status_parse (const char **words, int wordcount,
                              dict_t **options)
 {
-        dict_t *dict            = NULL;
-        int     ret             = -1;
-        int     cmd             = 0;
+        dict_t    *dict            = NULL;
+        int        ret             = -1;
+        uint32_t   cmd             = 0;
 
         GF_ASSERT (options);
 
@@ -1898,60 +1901,69 @@ cli_cmd_volume_status_parse (const char **words, int wordcount,
 
         case 3:
                 if (!strcmp (words[2], "all")) {
-
                         cmd = GF_CLI_STATUS_ALL;
                         ret = 0;
+
                 } else {
                         cmd = GF_CLI_STATUS_VOL;
                         ret = dict_set_str (dict, "volname", (char *)words[2]);
                 }
+
                 break;
 
         case 4:
+                cmd = cli_cmd_get_statusop (words[3]);
+
                 if (!strcmp (words[2], "all")) {
-                        cli_out ("Cannot specify brick/status-type for \"all\"");
-                        ret = -1;
-                        goto out;
+                        if (cmd == GF_CLI_STATUS_NONE) {
+                                cli_out ("%s is not a valid status option",
+                                         words[3]);
+                                ret = -1;
+                                goto out;
+                        }
+                        cmd |= GF_CLI_STATUS_ALL;
+                        ret  = 0;
+
                 } else {
-                        cmd = GF_CLI_STATUS_VOL;
-                        ret = dict_set_str (dict, "volname", (char *)words[2]);
+                        ret = dict_set_str (dict, "volname",
+                                            (char *)words[2]);
                         if (ret)
                                 goto out;
-                }
 
-                if (cli_cmd_validate_statusop (words[3])) {
-                        ret = cli_cmd_get_statusop (words[3]);
-                        if (GF_CLI_STATUS_INVAL == ret)
-                                goto out;
-                        cmd |= ret;
-                        ret = 0;
-                } else {
-                        cmd = GF_CLI_STATUS_BRICK;
-                        ret = dict_set_str (dict, "brick", (char *)words[3]);
+                        if (cmd == GF_CLI_STATUS_NONE) {
+                                cmd = GF_CLI_STATUS_BRICK;
+                                ret = dict_set_str (dict, "brick",
+                                                    (char *)words[3]);
+
+                        } else {
+                                cmd |= GF_CLI_STATUS_VOL;
+                                ret  = 0;
+                        }
                 }
+
                 break;
 
         case 5:
-                if (!cli_cmd_validate_statusop (words[4])) {
+                if (!strcmp (words[2], "all")) {
+                        cli_out ("Cannot specify brick for \"all\"");
                         ret = -1;
                         goto out;
                 }
 
-                cmd = GF_CLI_STATUS_BRICK;
-                ret = cli_cmd_get_statusop (words[4]);
-                if (GF_CLI_STATUS_INVAL == ret)
-                        goto out;
-                cmd |= ret;
-
-                if (!strcmp (words[2], "all")) {
-                        cli_out ("Cannot specify brick/status-type for \"all\"");
+                cmd = cli_cmd_get_statusop (words[4]);
+                if (cmd == GF_CLI_STATUS_NONE) {
+                        cli_out ("%s is not a valid status option",
+                                 words[4]);
                         ret = -1;
                         goto out;
-                } else {
-                        ret = dict_set_str (dict, "volname", (char *)words[2]);
-                        if (ret)
-                                goto out;
                 }
+
+                cmd |= GF_CLI_STATUS_BRICK;
+
+                ret = dict_set_str (dict, "volname", (char *)words[2]);
+                if (ret)
+                        goto out;
+
                 ret = dict_set_str (dict, "brick", (char *)words[3]);
                 break;
 
diff --git a/cli/src/cli-cmd-volume.c b/cli/src/cli-cmd-volume.c
index 41007cb7b2d..6bea948e968 100644
--- a/cli/src/cli-cmd-volume.c
+++ b/cli/src/cli-cmd-volume.c
@@ -1431,6 +1431,7 @@ cli_get_detail_status (dict_t *dict, int i, cli_volume_status_t *status)
         if (ret)
                 goto out;
 
+#ifdef GF_LINUX_HOST_OS
         memset (key, 0, sizeof (key));
         snprintf (key, sizeof (key), "brick%d.mnt_options", i);
         ret = dict_get_str (dict, key, &(status->mount_options));
@@ -1442,19 +1443,23 @@ cli_get_detail_status (dict_t *dict, int i, cli_volume_status_t *status)
         ret = dict_get_str (dict, key, &(status->fs_name));
         if (ret)
                 goto out;
+#endif
 
         if (IS_EXT_FS(status->fs_name) ||
             !strcmp (status->fs_name, "xfs")) {
 
+#ifdef GF_LINUX_HOST_OS
                 memset (key, 0, sizeof (key));
                 snprintf (key, sizeof (key), "brick%d.inode_size", i);
                 ret = dict_get_str (dict, key, &(status->inode_size));
                 if (ret)
                         status->inode_size = NULL;
+#endif
 
                 memset (key, 0, sizeof (key));
                 snprintf (key, sizeof (key), "brick%d.total_inodes", i);
-                ret = dict_get_uint64 (dict, key, &(status->total_inodes));
+                ret = dict_get_uint64 (dict, key,
+                                       &(status->total_inodes));
                 if (ret)
                         goto out;
 
@@ -1463,9 +1468,10 @@ cli_get_detail_status (dict_t *dict, int i, cli_volume_status_t *status)
                 ret = dict_get_uint64 (dict, key, &(status->free_inodes));
                 if (ret)
                         goto out;
-
         } else {
+#ifdef GF_LINUX_HOST_OS
                 status->inode_size = NULL;
+#endif
                 status->total_inodes = 0;
                 status->free_inodes = 0;
         }
@@ -1481,6 +1487,8 @@ cli_print_detailed_status (cli_volume_status_t *status)
         cli_out ("%-20s : %-20d", "Port", status->port);
         cli_out ("%-20s : %-20c", "Online", (status->online) ? 'Y' : 'N');
         cli_out ("%-20s : %-20s", "Pid", status->pid_str);
+
+#ifdef GF_LINUX_HOST_OS
         cli_out ("%-20s : %-20s", "File System", status->fs_name);
         cli_out ("%-20s : %-20s", "Device", status->device);
 
@@ -1491,15 +1499,15 @@ cli_print_detailed_status (cli_volume_status_t *status)
                 cli_out ("%-20s : %-20s", "Mount Options", "N/A");
         }
 
-        cli_out ("%-20s : %-20s", "Disk Space Free", status->free);
-        cli_out ("%-20s : %-20s", "Total Disk Space", status->total);
-
         if (status->inode_size) {
                 cli_out ("%-20s : %-20s", "Inode Size",
                          status->inode_size);
         } else {
                 cli_out ("%-20s : %-20s", "Inode Size", "N/A");
         }
+#endif
+        cli_out ("%-20s : %-20s", "Disk Space Free", status->free);
+        cli_out ("%-20s : %-20s", "Total Disk Space", status->total);
 
         if (status->total_inodes) {
                 cli_out ("%-20s : %-20ld", "Inode Count",
@@ -1821,10 +1829,10 @@ struct cli_cmd volume_cmds[] = {
            cli_cmd_volume_top_cbk,
            "volume top operations"},
 
-        { "volume status [all|{<VOLNAME> [<BRICKNAME>] "
-          "[misc-details|clients|mem|inode|fd|callpool]}]",
+        { "volume status [all | <VOLNAME> [<BRICK>]]"
+          " [detail|clients|mem|inode|fd|callpool]",
           cli_cmd_volume_status_cbk,
-         "display status of specified volume"},
+          "display status of all or specified volume(s)/brick"},
 
         { "volume heal <VOLNAME>",
           cli_cmd_volume_heal_cbk,
diff --git a/cli/src/cli-rpc-ops.c b/cli/src/cli-rpc-ops.c
index 07a2f9fc7be..6ed380bffa8 100644
--- a/cli/src/cli-rpc-ops.c
+++ b/cli/src/cli-rpc-ops.c
@@ -4956,7 +4956,7 @@ gf_cli3_1_status_cbk (struct rpc_req *req, struct iovec *iov,
         char                           *volname        = NULL;
         dict_t                         *dict           = NULL;
         gf_cli_rsp                      rsp            = {0,};
-        cli_volume_status_t                 status         = {0};
+        cli_volume_status_t             status         = {0};
 
         if (req->rpc_status == -1)
                 goto out;
@@ -5044,10 +5044,10 @@ gf_cli3_1_status_cbk (struct rpc_req *req, struct iovec *iov,
         if (ret)
                 goto out;
 
-        cli_out ("\nSTATUS OF VOLUME: %s", volname);
+        cli_out ("\nStatus of volume: %s", volname);
 
         if ((cmd & GF_CLI_STATUS_DETAIL) == 0)
-                cli_out ("BRICK\t\t\t\t\t\t\tPORT\tONLINE\tPID");
+                cli_out ("Brick\t\t\t\t\t\t\tPort\tOnline\tPid");
 
         for (i = 0; i < count; i++) {
 
diff --git a/cli/src/cli.h b/cli/src/cli.h
index 25b17da4968..74e1423f5db 100644
--- a/cli/src/cli.h
+++ b/cli/src/cli.h
@@ -132,12 +132,14 @@ struct cli_volume_status {
         uint64_t       free_inodes;
         char          *brick;
         char          *pid_str;
-        char          *fs_name;
         char          *free;
         char          *total;
+#ifdef GF_LINUX_HOST_OS
+        char          *fs_name;
         char          *mount_options;
         char          *device;
         char          *inode_size;
+#endif
 };
 
 typedef struct cli_volume_status cli_volume_status_t;