cli/glusterd: Changes to quota command Quota feature

 re-work.

Following are the cli commands that are new/re-worked:
======================================================

volume quota <VOLNAME> {enable|disable|list [<path> ...]|remove <path>| default-soft-limit <percent>} |
volume quota <VOLNAME> {limit-usage <path> <size> [<percent>]} |
volume quota <VOLNAME> {alert-time|soft-timeout|hard-timeout} {<time>}
volume status [all | <VOLNAME> [nfs|shd|<BRICK>|quotad]] [detail|clients|mem|inode|fd|callpool]
volume statedump <VOLNAME> [nfs|quotad] [all|mem|iobuf|callpool|priv|fd|inode|history]

glusterd changes:
=================
* Quota limits are now set as extended attributes by glusterd from
  the aux mount created by the cli.
* The gfids of the directories on which quota limits are set
  for a given volume are stored in
  /var/lib/glusterd/vols/<volname>/quota.conf file in binary format,
  and whose cksum and version is stored in
  /var/lib/glusterd/vols/<volname>/quota.cksum.

Original-author: Krutika Dhananjay <kdhananj@redhat.com>
Original-author: Krishnan Parthasarathi <kparthas@redhat.com>

BUG: 969461
Change-Id: If32bba36c67f9c2a30417af9c6389045b2b7c13b
Signed-off-by: Krutika Dhananjay <kdhananj@redhat.com>
Signed-off-by: Raghavendra G <rgowdapp@redhat.com>
Reviewed-on: http://review.gluster.org/6003
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Anand Avati <avati@redhat.com>

1 files changed, 48 insertions, 0 deletions

diff --git a/libglusterfs/src/common-utils.c b/libglusterfs/src/common-utils.c
index 4af1b4454..cb51dd175 100644
--- a/libglusterfs/src/common-utils.c
+++ b/libglusterfs/src/common-utils.c
@@ -3063,3 +3063,51 @@ gf_get_hard_limit (char *limit, char **hard_limit)
 
         return 0;
 }
+
+int
+gf_skip_header_section (int fd, int header_len)
+{
+        int  ret           = -1;
+
+        ret = lseek (fd, header_len, SEEK_SET);
+        if (ret == (off_t) -1) {
+                gf_log ("", GF_LOG_ERROR, "Failed to skip header "
+                        "section");
+        } else {
+                ret = 0;
+        }
+
+        return ret;
+}
+
+gf_boolean_t
+gf_is_service_running (char *pidfile, int *pid)
+{
+        FILE            *file = NULL;
+        gf_boolean_t    running = _gf_false;
+        int             ret = 0;
+        int             fno = 0;
+
+        file = fopen (pidfile, "r+");
+        if (!file)
+                goto out;
+
+        fno = fileno (file);
+        ret = lockf (fno, F_TEST, 0);
+        if (ret == -1)
+                running = _gf_true;
+        if (!pid)
+                goto out;
+
+        ret = fscanf (file, "%d", pid);
+        if (ret <= 0) {
+                gf_log ("", GF_LOG_ERROR, "Unable to read pidfile: %s, %s",
+                        pidfile, strerror (errno));
+                *pid = -1;
+        }
+
+out:
+        if (file)
+                fclose (file);
+        return running;
+}