diff options
Diffstat (limited to 'xlators/features/locks/src/inodelk.c')
| -rw-r--r-- | xlators/features/locks/src/inodelk.c | 809 |
1 files changed, 445 insertions, 364 deletions
diff --git a/xlators/features/locks/src/inodelk.c b/xlators/features/locks/src/inodelk.c index eaae8d4de..508523e11 100644 --- a/xlators/features/locks/src/inodelk.c +++ b/xlators/features/locks/src/inodelk.c @@ -1,22 +1,12 @@ /* - Copyright (c) 2006, 2007, 2008 Gluster, Inc. <http://www.gluster.com> - This file is part of GlusterFS. - - GlusterFS is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published - by the Free Software Foundation; either version 3 of the License, - or (at your option) any later version. - - GlusterFS is distributed in the hope that it will be useful, but - WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program. If not, see - <http://www.gnu.org/licenses/>. -*/ + Copyright (c) 2006-2012 Red Hat, Inc. <http://www.redhat.com> + This file is part of GlusterFS. + This file is licensed to you under your choice of the GNU Lesser + General Public License, version 3 or any later version (LGPLv3 or + later), or the GNU General Public License, version 2 (GPLv2), in all + cases as published by the Free Software Foundation. +*/ #ifndef _CONFIG_H #define _CONFIG_H #include "config.h" @@ -33,30 +23,40 @@ #include "locks.h" #include "common.h" -void +inline void __delete_inode_lock (pl_inode_lock_t *lock) { - list_del (&lock->list); + list_del (&lock->list); } -void -__destroy_inode_lock (pl_inode_lock_t *lock) +static inline void +__pl_inodelk_ref (pl_inode_lock_t *lock) +{ + lock->ref++; +} + +inline void +__pl_inodelk_unref (pl_inode_lock_t *lock) { - GF_FREE (lock); + lock->ref--; + if (!lock->ref) { + GF_FREE (lock->connection_id); + GF_FREE (lock); + } } /* Check if 2 inodelks are conflicting on type. Only 2 shared locks don't conflict */ -static int +static inline int inodelk_type_conflict (pl_inode_lock_t *l1, pl_inode_lock_t *l2) { - if (l2->fl_type == F_WRLCK || l1->fl_type == F_WRLCK) - return 1; + if (l2->fl_type == F_WRLCK || l1->fl_type == F_WRLCK) + return 1; - return 0; + return 0; } void -pl_print_inodelk (char *str, int size, int cmd, struct flock *flock, const char *domain) +pl_print_inodelk (char *str, int size, int cmd, struct gf_flock *flock, const char *domain) { char *cmd_str = NULL; char *type_str = NULL; @@ -115,15 +115,16 @@ pl_print_inodelk (char *str, int size, int cmd, struct flock *flock, const char static int inodelk_overlap (pl_inode_lock_t *l1, pl_inode_lock_t *l2) { - return ((l1->fl_end >= l2->fl_start) && - (l2->fl_end >= l1->fl_start)); + return ((l1->fl_end >= l2->fl_start) && + (l2->fl_end >= l1->fl_start)); } /* Returns true if the 2 inodelks have the same owner */ -static int same_inodelk_owner (pl_inode_lock_t *l1, pl_inode_lock_t *l2) +static inline int +same_inodelk_owner (pl_inode_lock_t *l1, pl_inode_lock_t *l2) { - return ((l1->owner == l2->owner) && - (l1->transport == l2->transport)); + return (is_same_lkowner (&l1->owner, &l2->owner) && + (l1->client == l2->client)); } /* Returns true if the 2 inodelks conflict with each other */ @@ -138,18 +139,19 @@ inodelk_conflict (pl_inode_lock_t *l1, pl_inode_lock_t *l2) static pl_inode_lock_t * __inodelk_grantable (pl_dom_list_t *dom, pl_inode_lock_t *lock) { - pl_inode_lock_t *l = NULL; - pl_inode_lock_t *ret = NULL; - if (list_empty (&dom->inodelk_list)) - goto out; - list_for_each_entry (l, &dom->inodelk_list, list){ - if (inodelk_conflict (lock, l)) { - ret = l; - goto out; - } - } + pl_inode_lock_t *l = NULL; + pl_inode_lock_t *ret = NULL; + if (list_empty (&dom->inodelk_list)) + goto out; + list_for_each_entry (l, &dom->inodelk_list, list){ + if (inodelk_conflict (lock, l) && + !same_inodelk_owner (lock, l)) { + ret = l; + goto out; + } + } out: - return ret; + return ret; } static pl_inode_lock_t * @@ -158,18 +160,18 @@ __blocked_lock_conflict (pl_dom_list_t *dom, pl_inode_lock_t *lock) pl_inode_lock_t *l = NULL; pl_inode_lock_t *ret = NULL; - if (list_empty (&dom->blocked_entrylks)) - return NULL; + if (list_empty (&dom->blocked_inodelks)) + return NULL; - list_for_each_entry (l, &dom->blocked_inodelks, blocked_locks) { - if (inodelk_conflict (lock, l)) { - ret = l; - goto out; + list_for_each_entry (l, &dom->blocked_inodelks, blocked_locks) { + if (inodelk_conflict (lock, l)) { + ret = l; + goto out; } - } + } out: - return ret; + return ret; } static int @@ -177,17 +179,17 @@ __owner_has_lock (pl_dom_list_t *dom, pl_inode_lock_t *newlock) { pl_inode_lock_t *lock = NULL; - list_for_each_entry (lock, &dom->entrylk_list, list) { - if (same_inodelk_owner (lock, newlock)) - return 1; - } + list_for_each_entry (lock, &dom->inodelk_list, list) { + if (same_inodelk_owner (lock, newlock)) + return 1; + } - list_for_each_entry (lock, &dom->blocked_entrylks, blocked_locks) { - if (same_inodelk_owner (lock, newlock)) - return 1; - } + list_for_each_entry (lock, &dom->blocked_inodelks, blocked_locks) { + if (same_inodelk_owner (lock, newlock)) + return 1; + } - return 0; + return 0; } @@ -196,81 +198,85 @@ __owner_has_lock (pl_dom_list_t *dom, pl_inode_lock_t *newlock) */ static int __lock_inodelk (xlator_t *this, pl_inode_t *pl_inode, pl_inode_lock_t *lock, - int can_block, pl_dom_list_t *dom) + int can_block, pl_dom_list_t *dom) { - pl_inode_lock_t *conf = NULL; - int ret = -EINVAL; + pl_inode_lock_t *conf = NULL; + int ret = -EINVAL; - conf = __inodelk_grantable (dom, lock); - if (conf){ - ret = -EAGAIN; - if (can_block == 0) - goto out; + conf = __inodelk_grantable (dom, lock); + if (conf){ + ret = -EAGAIN; + if (can_block == 0) + goto out; - list_add_tail (&lock->blocked_locks, &dom->blocked_inodelks); + gettimeofday (&lock->blkd_time, NULL); + list_add_tail (&lock->blocked_locks, &dom->blocked_inodelks); gf_log (this->name, GF_LOG_TRACE, - "%s (pid=%d) lk-owner:%"PRIu64" %"PRId64" - %"PRId64" => Blocked", + "%s (pid=%d) lk-owner:%s %"PRId64" - %"PRId64" => Blocked", lock->fl_type == F_UNLCK ? "Unlock" : "Lock", lock->client_pid, - lock->owner, + lkowner_utoa (&lock->owner), lock->user_flock.l_start, lock->user_flock.l_len); - goto out; - } + goto out; + } if (__blocked_lock_conflict (dom, lock) && !(__owner_has_lock (dom, lock))) { ret = -EAGAIN; if (can_block == 0) goto out; + gettimeofday (&lock->blkd_time, NULL); list_add_tail (&lock->blocked_locks, &dom->blocked_inodelks); gf_log (this->name, GF_LOG_TRACE, "Lock is grantable, but blocking to prevent starvation"); - gf_log (this->name, GF_LOG_TRACE, - "%s (pid=%d) (lk-owner=%"PRIu64") %"PRId64" - %"PRId64" => Blocked", + gf_log (this->name, GF_LOG_TRACE, + "%s (pid=%d) (lk-owner=%s) %"PRId64" - %"PRId64" => Blocked", lock->fl_type == F_UNLCK ? "Unlock" : "Lock", lock->client_pid, - lock->owner, + lkowner_utoa (&lock->owner), lock->user_flock.l_start, lock->user_flock.l_len); - goto out; + goto out; } - list_add (&lock->list, &dom->inodelk_list); + __pl_inodelk_ref (lock); + gettimeofday (&lock->granted_time, NULL); + list_add (&lock->list, &dom->inodelk_list); - ret = 0; + ret = 0; out: - return ret; + return ret; } /* Return true if the two inodelks have exactly same lock boundaries */ static int inodelks_equal (pl_inode_lock_t *l1, pl_inode_lock_t *l2) { - if ((l1->fl_start == l2->fl_start) && - (l1->fl_end == l2->fl_end)) - return 1; + if ((l1->fl_start == l2->fl_start) && + (l1->fl_end == l2->fl_end)) + return 1; - return 0; + return 0; } static pl_inode_lock_t * find_matching_inodelk (pl_inode_lock_t *lock, pl_dom_list_t *dom) { - pl_inode_lock_t *l = NULL; - list_for_each_entry (l, &dom->inodelk_list, list) { - if (inodelks_equal (l, lock) && + pl_inode_lock_t *l = NULL; + list_for_each_entry (l, &dom->inodelk_list, list) { + if (inodelks_equal (l, lock) && same_inodelk_owner (l, lock)) - return l; - } - return NULL; + return l; + } + return NULL; } /* Set F_UNLCK removes a lock which has the exact same lock boundaries @@ -280,105 +286,110 @@ static pl_inode_lock_t * __inode_unlock_lock (xlator_t *this, pl_inode_lock_t *lock, pl_dom_list_t *dom) { - pl_inode_lock_t *conf = NULL; + pl_inode_lock_t *conf = NULL; - conf = find_matching_inodelk (lock, dom); - if (!conf) { - gf_log (this->name, GF_LOG_DEBUG, - " Matching lock not found for unlock"); - goto out; + conf = find_matching_inodelk (lock, dom); + if (!conf) { + gf_log (this->name, GF_LOG_ERROR, + " Matching lock not found for unlock %llu-%llu, by %s " + "on %p", (unsigned long long)lock->fl_start, + (unsigned long long)lock->fl_end, + lkowner_utoa (&lock->owner), lock->client); + goto out; } - __delete_inode_lock (conf); + __delete_inode_lock (conf); gf_log (this->name, GF_LOG_DEBUG, - " Matching lock found for unlock"); - __destroy_inode_lock (lock); - + " Matching lock found for unlock %llu-%llu, by %s on %p", + (unsigned long long)lock->fl_start, + (unsigned long long)lock->fl_end, lkowner_utoa (&lock->owner), + lock->client); out: - return conf; - - + return conf; } static void -__grant_blocked_inode_locks (xlator_t *this, pl_inode_t *pl_inode, - struct list_head *granted, pl_dom_list_t *dom) +__grant_blocked_inode_locks (xlator_t *this, pl_inode_t *pl_inode, + struct list_head *granted, pl_dom_list_t *dom) { - int bl_ret = 0; - pl_inode_lock_t *bl = NULL; - pl_inode_lock_t *tmp = NULL; + int bl_ret = 0; + pl_inode_lock_t *bl = NULL; + pl_inode_lock_t *tmp = NULL; struct list_head blocked_list; INIT_LIST_HEAD (&blocked_list); list_splice_init (&dom->blocked_inodelks, &blocked_list); - list_for_each_entry_safe (bl, tmp, &blocked_list, blocked_locks) { + list_for_each_entry_safe (bl, tmp, &blocked_list, blocked_locks) { - list_del_init (&bl->blocked_locks); + list_del_init (&bl->blocked_locks); - bl_ret = __lock_inodelk (this, pl_inode, bl, 1, dom); + bl_ret = __lock_inodelk (this, pl_inode, bl, 1, dom); - if (bl_ret == 0) { - list_add (&bl->blocked_locks, granted); + if (bl_ret == 0) { + list_add (&bl->blocked_locks, granted); } } - return; + return; } /* Grant all inodelks blocked on a lock */ void -grant_blocked_inode_locks (xlator_t *this, pl_inode_t *pl_inode, pl_dom_list_t *dom) +grant_blocked_inode_locks (xlator_t *this, pl_inode_t *pl_inode, + pl_dom_list_t *dom) { - struct list_head granted; - pl_inode_lock_t *lock; - pl_inode_lock_t *tmp; - - INIT_LIST_HEAD (&granted); + struct list_head granted; + pl_inode_lock_t *lock; + pl_inode_lock_t *tmp; - if (list_empty (&dom->blocked_inodelks)) { - gf_log (this->name, GF_LOG_TRACE, - "No blocked locks to be granted for domain: %s", dom->domain); - } + INIT_LIST_HEAD (&granted); pthread_mutex_lock (&pl_inode->mutex); - { - __grant_blocked_inode_locks (this, pl_inode, &granted, dom); - } + { + __grant_blocked_inode_locks (this, pl_inode, &granted, dom); + } pthread_mutex_unlock (&pl_inode->mutex); - list_for_each_entry_safe (lock, tmp, &granted, blocked_locks) { + list_for_each_entry_safe (lock, tmp, &granted, blocked_locks) { gf_log (this->name, GF_LOG_TRACE, - "%s (pid=%d) (lk-owner=%"PRIu64") %"PRId64" - %"PRId64" => Granted", - lock->fl_type == F_UNLCK ? "Unlock" : "Lock", - lock->client_pid, - lock->owner, - lock->user_flock.l_start, - lock->user_flock.l_len); + "%s (pid=%d) (lk-owner=%s) %"PRId64" - %"PRId64" => Granted", + lock->fl_type == F_UNLCK ? "Unlock" : "Lock", + lock->client_pid, + lkowner_utoa (&lock->owner), + lock->user_flock.l_start, + lock->user_flock.l_len); - pl_trace_out (this, lock->frame, NULL, NULL, F_SETLKW, - &lock->user_flock, 0, 0, lock->volume); + pl_trace_out (this, lock->frame, NULL, NULL, F_SETLKW, + &lock->user_flock, 0, 0, lock->volume); - STACK_UNWIND_STRICT (inodelk, lock->frame, 0, 0); - } + STACK_UNWIND_STRICT (inodelk, lock->frame, 0, 0, NULL); + } + pthread_mutex_lock (&pl_inode->mutex); + { + list_for_each_entry_safe (lock, tmp, &granted, blocked_locks) { + list_del_init (&lock->blocked_locks); + __pl_inodelk_unref (lock); + } + } + pthread_mutex_unlock (&pl_inode->mutex); } -/* Release all inodelks from this transport */ +/* Release all inodelks from this client */ static int -release_inode_locks_of_transport (xlator_t *this, pl_dom_list_t *dom, - inode_t *inode, void *trans) +release_inode_locks_of_client (xlator_t *this, pl_dom_list_t *dom, + inode_t *inode, client_t *client) { - pl_inode_lock_t *tmp = NULL; - pl_inode_lock_t *l = NULL; + pl_inode_lock_t *tmp = NULL; + pl_inode_lock_t *l = NULL; pl_inode_t * pinode = NULL; - struct list_head granted; struct list_head released; char *path = NULL; + char *file = NULL; - INIT_LIST_HEAD (&granted); INIT_LIST_HEAD (&released); pinode = pl_inode_get (this, inode); @@ -387,251 +398,304 @@ release_inode_locks_of_transport (xlator_t *this, pl_dom_list_t *dom, { list_for_each_entry_safe (l, tmp, &dom->blocked_inodelks, blocked_locks) { - if (l->transport != trans) + if (l->client != client) continue; list_del_init (&l->blocked_locks); - if (inode_path (inode, NULL, &path) < 0) { - gf_log (this->name, GF_LOG_TRACE, - "inode_path failed"); - goto unlock; - } + inode_path (inode, NULL, &path); + if (path) + file = path; + else + file = uuid_utoa (inode->gfid); - gf_log (this->name, GF_LOG_TRACE, - "releasing lock on %s held by " - "{transport=%p, pid=%"PRId64" lk-owner=%"PRIu64"}", - path, trans, - (uint64_t) l->client_pid, - l->owner); + gf_log (this->name, GF_LOG_DEBUG, + "releasing blocking lock on %s held by " + "{client=%p, pid=%"PRId64" lk-owner=%s}", + file, client, (uint64_t) l->client_pid, + lkowner_utoa (&l->owner)); list_add (&l->blocked_locks, &released); - + if (path) { + GF_FREE (path); + path = NULL; + } } list_for_each_entry_safe (l, tmp, &dom->inodelk_list, list) { - if (l->transport != trans) + if (l->client != client) continue; - __delete_inode_lock (l); - __destroy_inode_lock (l); - - - if (inode_path (inode, NULL, &path) < 0) { - gf_log (this->name, GF_LOG_TRACE, - "inode_path failed"); - goto unlock; + inode_path (inode, NULL, &path); + if (path) + file = path; + else + file = uuid_utoa (inode->gfid); + + gf_log (this->name, GF_LOG_DEBUG, + "releasing granted lock on %s held by " + "{client=%p, pid=%"PRId64" lk-owner=%s}", + file, client, (uint64_t) l->client_pid, + lkowner_utoa (&l->owner)); + + if (path) { + GF_FREE (path); + path = NULL; } - gf_log (this->name, GF_LOG_TRACE, - "releasing lock on %s held by " - "{transport=%p, pid=%"PRId64" lk-owner=%"PRIu64"}", - path, trans, - (uint64_t) l->client_pid, - l->owner); - - + __delete_inode_lock (l); + __pl_inodelk_unref (l); } } -unlock: - if (path) - GF_FREE (path); + GF_FREE (path); pthread_mutex_unlock (&pinode->mutex); list_for_each_entry_safe (l, tmp, &released, blocked_locks) { list_del_init (&l->blocked_locks); - STACK_UNWIND_STRICT (inodelk, l->frame, -1, EAGAIN); - GF_FREE (l); + STACK_UNWIND_STRICT (inodelk, l->frame, -1, EAGAIN, NULL); + //No need to take lock as the locks are only in one list + __pl_inodelk_unref (l); } - grant_blocked_inode_locks (this, pinode, dom); - return 0; + grant_blocked_inode_locks (this, pinode, dom); + return 0; } static int pl_inode_setlk (xlator_t *this, pl_inode_t *pl_inode, pl_inode_lock_t *lock, - int can_block, pl_dom_list_t *dom) + int can_block, pl_dom_list_t *dom) { - int ret = -EINVAL; + int ret = -EINVAL; pl_inode_lock_t *retlock = NULL; + gf_boolean_t unref = _gf_true; - pthread_mutex_lock (&pl_inode->mutex); - { - if (lock->fl_type != F_UNLCK) { - ret = __lock_inodelk (this, pl_inode, lock, can_block, dom); - if (ret == 0) - gf_log (this->name, GF_LOG_TRACE, - "%s (pid=%d) (lk-owner=%"PRIu64") %"PRId64" - %"PRId64" => OK", + pthread_mutex_lock (&pl_inode->mutex); + { + if (lock->fl_type != F_UNLCK) { + ret = __lock_inodelk (this, pl_inode, lock, can_block, dom); + if (ret == 0) { + gf_log (this->name, GF_LOG_TRACE, + "%s (pid=%d) (lk-owner=%s) %"PRId64" - %"PRId64" => OK", lock->fl_type == F_UNLCK ? "Unlock" : "Lock", lock->client_pid, - lock->owner, + lkowner_utoa (&lock->owner), lock->fl_start, lock->fl_end); + } else if (ret == -EAGAIN) { + gf_log (this->name, GF_LOG_TRACE, + "%s (pid=%d) (lk-owner=%s) %"PRId64" - %"PRId64" => NOK", + lock->fl_type == F_UNLCK ? "Unlock" : "Lock", + lock->client_pid, + lkowner_utoa (&lock->owner), + lock->user_flock.l_start, + lock->user_flock.l_len); + if (can_block) + unref = _gf_false; + } + } else { + retlock = __inode_unlock_lock (this, lock, dom); + if (!retlock) { + gf_log (this->name, GF_LOG_DEBUG, + "Bad Unlock issued on Inode lock"); + ret = -EINVAL; + goto out; + } + __pl_inodelk_unref (retlock); - if (ret == -EAGAIN) - gf_log (this->name, GF_LOG_TRACE, - "%s (pid=%d) (lk-owner=%"PRIu64") %"PRId64" - %"PRId64" => NOK", - lock->fl_type == F_UNLCK ? "Unlock" : "Lock", - lock->client_pid, - lock->owner, - lock->user_flock.l_start, - lock->user_flock.l_len); - - goto out; - } - - - retlock = __inode_unlock_lock (this, lock, dom); - if (!retlock) { - gf_log (this->name, GF_LOG_DEBUG, - "Bad Unlock issued on Inode lock"); - ret = -EINVAL; - goto out; + ret = 0; } - __destroy_inode_lock (retlock); - - ret = 0; - - - } + } out: - pthread_mutex_unlock (&pl_inode->mutex); - grant_blocked_inode_locks (this, pl_inode, dom); + if (unref) + __pl_inodelk_unref (lock); + pthread_mutex_unlock (&pl_inode->mutex); + grant_blocked_inode_locks (this, pl_inode, dom); return ret; } /* Create a new inode_lock_t */ pl_inode_lock_t * -new_inode_lock (struct flock *flock, void *transport, pid_t client_pid, - uint64_t owner, const char *volume) +new_inode_lock (struct gf_flock *flock, client_t *client, pid_t client_pid, + call_frame_t *frame, xlator_t *this, const char *volume, + char *conn_id) { - pl_inode_lock_t *lock = NULL; + pl_inode_lock_t *lock = NULL; - lock = GF_CALLOC (1, sizeof (*lock), + lock = GF_CALLOC (1, sizeof (*lock), gf_locks_mt_pl_inode_lock_t); - if (!lock) { - return NULL; - } + if (!lock) { + return NULL; + } - lock->fl_start = flock->l_start; - lock->fl_type = flock->l_type; + lock->fl_start = flock->l_start; + lock->fl_type = flock->l_type; - if (flock->l_len == 0) - lock->fl_end = LLONG_MAX; - else - lock->fl_end = flock->l_start + flock->l_len - 1; + if (flock->l_len == 0) + lock->fl_end = LLONG_MAX; + else + lock->fl_end = flock->l_start + flock->l_len - 1; - lock->transport = transport; - lock->client_pid = client_pid; - lock->owner = owner; - lock->volume = volume; + lock->client = client; + lock->client_pid = client_pid; + lock->volume = volume; + lock->owner = frame->root->lk_owner; + lock->frame = frame; + lock->this = this; - INIT_LIST_HEAD (&lock->list); - INIT_LIST_HEAD (&lock->blocked_locks); + if (conn_id) { + lock->connection_id = gf_strdup (conn_id); + } + + INIT_LIST_HEAD (&lock->list); + INIT_LIST_HEAD (&lock->blocked_locks); + __pl_inodelk_ref (lock); + + return lock; +} + +int32_t +_pl_convert_volume (const char *volume, char **res) +{ + char *mdata_vol = NULL; + int ret = 0; + + mdata_vol = strrchr (volume, ':'); + //if the volume already ends with :metadata don't bother + if (mdata_vol && (strcmp (mdata_vol, ":metadata") == 0)) + return 0; - return lock; + ret = gf_asprintf (res, "%s:metadata", volume); + if (ret <= 0) + return ENOMEM; + return 0; +} + +int32_t +_pl_convert_volume_for_special_range (struct gf_flock *flock, + const char *volume, char **res) +{ + int32_t ret = 0; + + if ((flock->l_start == LLONG_MAX -1) && + (flock->l_len == 0)) { + ret = _pl_convert_volume (volume, res); + } + + return ret; } /* Common inodelk code called from pl_inodelk and pl_finodelk */ int pl_common_inodelk (call_frame_t *frame, xlator_t *this, const char *volume, inode_t *inode, int32_t cmd, - struct flock *flock, loc_t *loc, fd_t *fd) + struct gf_flock *flock, loc_t *loc, fd_t *fd, dict_t *xdata) { - int32_t op_ret = -1; - int32_t op_errno = 0; - int ret = -1; - int can_block = 0; - void * transport = NULL; - pid_t client_pid = -1; - uint64_t owner = -1; - pl_inode_t * pinode = NULL; - pl_inode_lock_t * reqlock = NULL; - pl_dom_list_t * dom = NULL; - - VALIDATE_OR_GOTO (frame, out); - VALIDATE_OR_GOTO (inode, unwind); - VALIDATE_OR_GOTO (flock, unwind); - - if ((flock->l_start < 0) || (flock->l_len < 0)) { - op_errno = EINVAL; - goto unwind; - } + int32_t op_ret = -1; + int32_t op_errno = 0; + int ret = -1; + GF_UNUSED int dict_ret = -1; + int can_block = 0; + pl_inode_t * pinode = NULL; + pl_inode_lock_t * reqlock = NULL; + pl_dom_list_t * dom = NULL; + char *res = NULL; + char *res1 = NULL; + char *conn_id = NULL; + pl_ctx_t *ctx = NULL; + + if (xdata) + dict_ret = dict_get_str (xdata, "connection-id", &conn_id); + + VALIDATE_OR_GOTO (frame, out); + VALIDATE_OR_GOTO (inode, unwind); + VALIDATE_OR_GOTO (flock, unwind); + + if ((flock->l_start < 0) || (flock->l_len < 0)) { + op_errno = EINVAL; + goto unwind; + } - pl_trace_in (this, frame, fd, loc, cmd, flock, volume); + op_errno = _pl_convert_volume_for_special_range (flock, volume, &res); + if (op_errno) + goto unwind; + if (res) + volume = res; - transport = frame->root->trans; - client_pid = frame->root->pid; - owner = frame->root->lk_owner; + pl_trace_in (this, frame, fd, loc, cmd, flock, volume); - pinode = pl_inode_get (this, inode); - if (!pinode) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory."); - op_errno = ENOMEM; - goto unwind; - } + pinode = pl_inode_get (this, inode); + if (!pinode) { + op_errno = ENOMEM; + goto unwind; + } - dom = get_domain (pinode, volume); + dom = get_domain (pinode, volume); + if (!dom) { + op_errno = ENOMEM; + goto unwind; + } - if (owner == 0) { - /* + if (frame->root->lk_owner.len == 0) { + /* special case: this means release all locks - from this transport - */ - gf_log (this->name, GF_LOG_TRACE, - "Releasing all locks from transport %p", transport); - - release_inode_locks_of_transport (this, dom, inode, transport); - goto unwind; - } - - reqlock = new_inode_lock (flock, transport, client_pid, owner, volume); - - if (!reqlock) { - gf_log (this->name, GF_LOG_ERROR, - "Out of memory."); - op_ret = -1; - op_errno = ENOMEM; - goto unwind; - } - - reqlock->frame = frame; - reqlock->this = this; - - switch (cmd) { - case F_SETLKW: - can_block = 1; - reqlock->frame = frame; - reqlock->this = this; - - /* fall through */ - - case F_SETLK: - memcpy (&reqlock->user_flock, flock, sizeof (struct flock)); - ret = pl_inode_setlk (this, pinode, reqlock, + from this client + */ + gf_log (this->name, GF_LOG_TRACE, + "Releasing all locks from client %p", frame->root->client); + + release_inode_locks_of_client (this, dom, inode, frame->root->client); + _pl_convert_volume (volume, &res1); + if (res1) { + dom = get_domain (pinode, res1); + if (dom) + release_inode_locks_of_client (this, dom, + inode, frame->root->client); + } + + op_ret = 0; + goto unwind; + } + + reqlock = new_inode_lock (flock, frame->root->client, frame->root->pid, + frame, this, volume, conn_id); + + if (!reqlock) { + op_ret = -1; + op_errno = ENOMEM; + goto unwind; + } + + + switch (cmd) { + case F_SETLKW: + can_block = 1; + + /* fall through */ + + case F_SETLK: + memcpy (&reqlock->user_flock, flock, sizeof (struct gf_flock)); + ret = pl_inode_setlk (this, pinode, reqlock, can_block, dom); - if (ret < 0) { - if (can_block) { + if (ret < 0) { + if ((can_block) && (F_UNLCK != flock->l_type)) { pl_trace_block (this, frame, fd, loc, cmd, flock, volume); - goto out; + goto out; } - gf_log (this->name, GF_LOG_TRACE, "returning EAGAIN"); - op_errno = -ret; - __destroy_inode_lock (reqlock); - goto unwind; - } - break; - - default: - op_errno = ENOTSUP; - gf_log (this->name, GF_LOG_DEBUG, + gf_log (this->name, GF_LOG_TRACE, "returning EAGAIN"); + op_errno = -ret; + goto unwind; + } + break; + + default: + op_errno = ENOTSUP; + gf_log (this->name, GF_LOG_DEBUG, "Lock command F_GETLK not supported for [f]inodelk " "(cmd=%d)", cmd); @@ -640,86 +704,103 @@ pl_common_inodelk (call_frame_t *frame, xlator_t *this, op_ret = 0; + ctx = pl_ctx_get (frame->root->client, this); + + if (ctx == NULL) { + gf_log (this->name, GF_LOG_INFO, "pl_ctx_get() failed"); + goto unwind; + } + + if (flock->l_type == F_UNLCK) + pl_del_locker (ctx->ltable, volume, loc, fd, + &frame->root->lk_owner, + GF_FOP_INODELK); + else + pl_add_locker (ctx->ltable, volume, loc, fd, + frame->root->pid, + &frame->root->lk_owner, + GF_FOP_INODELK); + unwind: - if ((inode != NULL) && (flock !=NULL)) { - pl_update_refkeeper (this, inode); - pl_trace_out (this, frame, fd, loc, cmd, flock, op_ret, op_errno, volume); - } + if ((inode != NULL) && (flock !=NULL)) { + pl_update_refkeeper (this, inode); + pl_trace_out (this, frame, fd, loc, cmd, flock, op_ret, op_errno, volume); + } - STACK_UNWIND_STRICT (inodelk, frame, op_ret, op_errno); + STACK_UNWIND_STRICT (inodelk, frame, op_ret, op_errno, NULL); out: + GF_FREE (res); + GF_FREE (res1); return 0; } int pl_inodelk (call_frame_t *frame, xlator_t *this, - const char *volume, loc_t *loc, int32_t cmd, struct flock *flock) + const char *volume, loc_t *loc, int32_t cmd, struct gf_flock *flock, + dict_t *xdata) { - - pl_common_inodelk (frame, this, volume, loc->inode, cmd, flock, loc, NULL); + pl_common_inodelk (frame, this, volume, loc->inode, cmd, flock, + loc, NULL, xdata); return 0; } int pl_finodelk (call_frame_t *frame, xlator_t *this, - const char *volume, fd_t *fd, int32_t cmd, struct flock *flock) + const char *volume, fd_t *fd, int32_t cmd, struct gf_flock *flock, + dict_t *xdata) { - - pl_common_inodelk (frame, this, volume, fd->inode, cmd, flock, NULL, fd); + pl_common_inodelk (frame, this, volume, fd->inode, cmd, flock, + NULL, fd, xdata); return 0; } +static inline int32_t +__get_inodelk_dom_count (pl_dom_list_t *dom) +{ + pl_inode_lock_t *lock = NULL; + int32_t count = 0; -static int32_t -__get_inodelk_count (xlator_t *this, pl_inode_t *pl_inode) + list_for_each_entry (lock, &dom->inodelk_list, list) { + count++; + } + list_for_each_entry (lock, &dom->blocked_inodelks, blocked_locks) { + count++; + } + return count; +} + +/* Returns the no. of locks (blocked/granted) held on a given domain name + * If @domname is NULL, returns the no. of locks in all the domains present. + * If @domname is non-NULL and non-existent, returns 0 */ +int32_t +__get_inodelk_count (xlator_t *this, pl_inode_t *pl_inode, char *domname) { int32_t count = 0; - pl_inode_lock_t *lock = NULL; pl_dom_list_t *dom = NULL; list_for_each_entry (dom, &pl_inode->dom_list, inode_list) { - list_for_each_entry (lock, &dom->inodelk_list, list) { - - gf_log (this->name, GF_LOG_DEBUG, - " XATTR DEBUG" - " domain: %s %s (pid=%d) (lk-owner=%"PRIu64") %"PRId64" - %"PRId64" " - "state = Active", - dom->domain, - lock->fl_type == F_UNLCK ? "Unlock" : "Lock", - lock->client_pid, - lock->owner, - lock->user_flock.l_start, - lock->user_flock.l_len); - - count++; - } - - list_for_each_entry (lock, &dom->blocked_inodelks, blocked_locks) { + if (domname) { + if (strcmp (domname, dom->domain) == 0) { + count = __get_inodelk_dom_count (dom); + goto out; + } - gf_log (this->name, GF_LOG_DEBUG, - " XATTR DEBUG" - " domain: %s %s (pid=%d) (lk-owner=%"PRIu64") %"PRId64" - %"PRId64" " - "state = Blocked", - dom->domain, - lock->fl_type == F_UNLCK ? "Unlock" : "Lock", - lock->client_pid, - lock->owner, - lock->user_flock.l_start, - lock->user_flock.l_len); + } else { + /* Counting locks from all domains */ + count += __get_inodelk_dom_count (dom); - count++; } - } +out: return count; } int32_t -get_inodelk_count (xlator_t *this, inode_t *inode) +get_inodelk_count (xlator_t *this, inode_t *inode, char *domname) { pl_inode_t *pl_inode = NULL; uint64_t tmp_pl_inode = 0; @@ -735,7 +816,7 @@ get_inodelk_count (xlator_t *this, inode_t *inode) pthread_mutex_lock (&pl_inode->mutex); { - count = __get_inodelk_count (this, pl_inode); + count = __get_inodelk_count (this, pl_inode, domname); } pthread_mutex_unlock (&pl_inode->mutex); |