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authorPavan Sondur <pavan@gluster.com>2009-10-28 12:27:54 +0000
committerAnand V. Avati <avati@dev.gluster.com>2009-10-28 23:00:43 -0700
commitb3b4fc4afb7d206d0a481f3234bf83c768f02aa2 (patch)
tree4e2b94a3395c19cd296c0092e6da3ff9ab9de5c6 /xlators/features/locks/src/posix.c
parent53ff4f0299cf14c6c413d3e49991a6f05f9cda19 (diff)
Implement lookup in locks to return lock count in a dict value.
Signed-off-by: Anand V. Avati <avati@dev.gluster.com> BUG: 306 (Enhance locks to aid debugging) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=306
Diffstat (limited to 'xlators/features/locks/src/posix.c')
-rw-r--r--xlators/features/locks/src/posix.c181
1 files changed, 181 insertions, 0 deletions
diff --git a/xlators/features/locks/src/posix.c b/xlators/features/locks/src/posix.c
index c7ae1baedbd..3b011317c01 100644
--- a/xlators/features/locks/src/posix.c
+++ b/xlators/features/locks/src/posix.c
@@ -781,6 +781,186 @@ pl_forget (xlator_t *this,
return 0;
}
+static int32_t
+__get_posixlk_count (xlator_t *this, pl_inode_t *pl_inode)
+{
+ posix_lock_t *lock = NULL;
+ int32_t count = 0;
+
+ list_for_each_entry (lock, &pl_inode->ext_list, list) {
+
+ gf_log (this->name, GF_LOG_DEBUG,
+ " XATTR DEBUG"
+ "%s (pid=%d) %"PRId64" - %"PRId64" state: %s",
+ lock->fl_type == F_UNLCK ? "Unlock" : "Lock",
+ lock->client_pid,
+ lock->user_flock.l_start,
+ lock->user_flock.l_len,
+ lock->blocked == 1 ? "Blocked" : "Active");
+
+ count++;
+ }
+
+ return count;
+}
+
+int32_t
+get_posixlk_count (xlator_t *this, inode_t *inode)
+{
+ pl_inode_t *pl_inode = NULL;
+ uint64_t tmp_pl_inode = 0;
+ int ret = 0;
+ int32_t count = 0;
+
+ ret = inode_ctx_get (inode, this, &tmp_pl_inode);
+ if (ret != 0) {
+ goto out;
+ }
+
+ pl_inode = (pl_inode_t *)(long) tmp_pl_inode;
+
+ pthread_mutex_lock (&pl_inode->mutex);
+ {
+ count =__get_posixlk_count (this, pl_inode);
+ }
+ pthread_mutex_unlock (&pl_inode->mutex);
+
+out:
+ return count;
+}
+
+void pl_entrylk_xattr_fill (xlator_t *this, inode_t *inode,
+ dict_t *dict)
+{
+ int32_t count = 0;
+ int ret = -1;
+
+ count = get_entrylk_count (this, inode);
+ ret = dict_set_int32 (dict, GLUSTERFS_ENTRYLK_COUNT, count);
+ if (ret < 0) {
+ gf_log (this->name, GF_LOG_DEBUG,
+ " dict_set failed on key %s", GLUSTERFS_ENTRYLK_COUNT);
+ }
+
+}
+
+void pl_inodelk_xattr_fill (xlator_t *this, inode_t *inode,
+ dict_t *dict)
+{
+ int32_t count = 0;
+ int ret = -1;
+
+ count = get_inodelk_count (this, inode);
+ ret = dict_set_int32 (dict, GLUSTERFS_INODELK_COUNT, count);
+ if (ret < 0) {
+ gf_log (this->name, GF_LOG_DEBUG,
+ " dict_set failed on key %s", GLUSTERFS_INODELK_COUNT);
+ }
+
+}
+
+void pl_posixlk_xattr_fill (xlator_t *this, inode_t *inode,
+ dict_t *dict)
+{
+ int32_t count = 0;
+ int ret = -1;
+
+ count = get_posixlk_count (this, inode);
+ ret = dict_set_int32 (dict, GLUSTERFS_POSIXLK_COUNT, count);
+ if (ret < 0) {
+ gf_log (this->name, GF_LOG_DEBUG,
+ " dict_set failed on key %s", GLUSTERFS_POSIXLK_COUNT);
+ }
+
+}
+
+int32_t
+pl_lookup_cbk (call_frame_t *frame,
+ void *cookie,
+ xlator_t *this,
+ int32_t op_ret,
+ int32_t op_errno,
+ inode_t *inode,
+ struct stat *buf,
+ dict_t *dict,
+ struct stat *postparent)
+{
+ pl_local_t *local = NULL;
+
+ if (!frame->local) {
+ goto out;
+ }
+
+ local = frame->local;
+
+ if (local->entrylk_count_req)
+ pl_entrylk_xattr_fill (this, inode, dict);
+ if (local->inodelk_count_req)
+ pl_inodelk_xattr_fill (this, inode, dict);
+ if (local->posixlk_count_req)
+ pl_posixlk_xattr_fill (this, inode, dict);
+
+
+ frame->local = NULL;
+
+ if (local != NULL)
+ FREE (local);
+
+out:
+ STACK_UNWIND (frame,
+ op_ret,
+ op_errno,
+ inode,
+ buf,
+ dict,
+ postparent);
+ return 0;
+}
+
+int32_t
+pl_lookup (call_frame_t *frame,
+ xlator_t *this,
+ loc_t *loc,
+ dict_t *xattr_req)
+{
+ pl_local_t *local = NULL;
+ int ret = -1;
+
+ VALIDATE_OR_GOTO (frame, out);
+ VALIDATE_OR_GOTO (this, out);
+ VALIDATE_OR_GOTO (loc, out);
+ VALIDATE_OR_GOTO (xattr_req, out);
+
+ local = CALLOC (1, sizeof (*local));
+ if (!local) {
+ ret = -1;
+ gf_log (this->name, GF_LOG_ERROR,
+ " Out of memory");
+ goto out;
+ }
+
+ if (dict_get (xattr_req, GLUSTERFS_ENTRYLK_COUNT))
+ local->entrylk_count_req = 1;
+ if (dict_get (xattr_req, GLUSTERFS_INODELK_COUNT))
+ local->inodelk_count_req = 1;
+ if (dict_get (xattr_req, GLUSTERFS_POSIXLK_COUNT))
+ local->posixlk_count_req = 1;
+
+ frame->local = local;
+
+ STACK_WIND (frame,
+ pl_lookup_cbk,
+ FIRST_CHILD(this),
+ FIRST_CHILD(this)->fops->lookup,
+ loc,
+ xattr_req);
+ ret = 0;
+out:
+ if (ret == -1)
+ STACK_UNWIND_STRICT (lookup, frame, -1, 0, NULL, NULL, NULL, NULL);
+
+ return 0;
+}
int32_t
pl_dump_inode_priv (xlator_t *this, inode_t *inode)
@@ -912,6 +1092,7 @@ pl_fentrylk (call_frame_t *frame, xlator_t *this,
entrylk_cmd cmd, entrylk_type type);
struct xlator_fops fops = {
+ .lookup = pl_lookup,
.create = pl_create,
.truncate = pl_truncate,
.ftruncate = pl_ftruncate,