From b9b8734a9496ccf5f8ed5527dc7714930a59948b Mon Sep 17 00:00:00 2001 From: Amar Tumballi Date: Mon, 21 Jun 2010 04:24:40 +0000 Subject: renamed xlator/protocol to xlator/protocol/legacy Signed-off-by: Amar Tumballi Signed-off-by: Raghavendra G Signed-off-by: Anand V. Avati BUG: 875 (Implement a new protocol to provide proper backward/forward compatibility) URL: http://bugs.gluster.com/cgi-bin/bugzilla3/show_bug.cgi?id=875 --- xlators/protocol/server/src/server-helpers.c | 925 --------------------------- 1 file changed, 925 deletions(-) delete mode 100644 xlators/protocol/server/src/server-helpers.c (limited to 'xlators/protocol/server/src/server-helpers.c') diff --git a/xlators/protocol/server/src/server-helpers.c b/xlators/protocol/server/src/server-helpers.c deleted file mode 100644 index d07e841f287..00000000000 --- a/xlators/protocol/server/src/server-helpers.c +++ /dev/null @@ -1,925 +0,0 @@ -/* - Copyright (c) 2006-2009 Gluster, Inc. - 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 - . -*/ - -#ifndef _CONFIG_H -#define _CONFIG_H -#include "config.h" -#endif - -#include "server-protocol.h" -#include "server-helpers.h" - - -/* server_loc_fill - derive a loc_t for a given inode number - * - * NOTE: make sure that @loc is empty, because any pointers it holds with reference will - * be leaked after returning from here. - */ -int -server_loc_fill (loc_t *loc, server_state_t *state, - ino_t ino, ino_t par, - const char *name, const char *path) -{ - inode_t *inode = NULL; - inode_t *parent = NULL; - int32_t ret = -1; - char *dentry_path = NULL; - - - GF_VALIDATE_OR_GOTO ("server", loc, out); - GF_VALIDATE_OR_GOTO ("server", state, out); - GF_VALIDATE_OR_GOTO ("server", path, out); - - /* anything beyond this point is success */ - ret = 0; - loc->ino = ino; - inode = loc->inode; - if (inode == NULL) { - if (ino) - inode = inode_search (state->itable, ino, NULL); - - if ((inode == NULL) && - (par && name)) - inode = inode_search (state->itable, par, name); - - loc->inode = inode; - if (inode) - loc->ino = inode->ino; - } - - parent = loc->parent; - if (parent == NULL) { - if (inode) - parent = inode_parent (inode, par, name); - else - parent = inode_search (state->itable, par, NULL); - loc->parent = parent; - } - - if (name && parent) { - ret = inode_path (parent, name, &dentry_path); - if (ret < 0) { - gf_log (state->bound_xl->name, GF_LOG_DEBUG, - "failed to build path for %"PRId64"/%s: %s", - parent->ino, name, strerror (-ret)); - } - } else if (inode) { - ret = inode_path (inode, NULL, &dentry_path); - if (ret < 0) { - gf_log (state->bound_xl->name, GF_LOG_DEBUG, - "failed to build path for %"PRId64": %s", - inode->ino, strerror (-ret)); - } - } - - if (dentry_path) { - if (strcmp (dentry_path, path)) { - gf_log (state->bound_xl->name, GF_LOG_DEBUG, - "paths differ for inode(%"PRId64"): " - "client path = %s. dentry path = %s", - ino, path, dentry_path); - } - - loc->path = dentry_path; - loc->name = strrchr (loc->path, '/'); - if (loc->name) - loc->name++; - } else { - loc->path = gf_strdup (path); - loc->name = strrchr (loc->path, '/'); - if (loc->name) - loc->name++; - } - -out: - return ret; -} - -/* - * stat_to_str - convert struct iatt to a ASCII string - * @stbuf: struct iatt pointer - * - * not for external reference - */ -char * -stat_to_str (struct iatt *stbuf) -{ - int ret = 0; - char *tmp_buf = NULL; - - uint64_t dev = stbuf->ia_gen; - uint64_t ino = stbuf->ia_ino; - uint32_t mode = st_mode_from_ia (stbuf->ia_prot, stbuf->ia_type); - uint32_t nlink = stbuf->ia_nlink; - uint32_t uid = stbuf->ia_uid; - uint32_t gid = stbuf->ia_gid; - uint64_t rdev = stbuf->ia_rdev; - uint64_t size = stbuf->ia_size; - uint32_t blksize = stbuf->ia_blksize; - uint64_t blocks = stbuf->ia_blocks; - uint32_t atime = stbuf->ia_atime; - uint32_t mtime = stbuf->ia_mtime; - uint32_t ctime = stbuf->ia_ctime; - - uint32_t atime_nsec = stbuf->ia_atime_nsec; - uint32_t mtime_nsec = stbuf->ia_mtime_nsec; - uint32_t ctime_nsec = stbuf->ia_ctime_nsec; - - - ret = gf_asprintf (&tmp_buf, - GF_STAT_PRINT_FMT_STR, - dev, - ino, - mode, - nlink, - uid, - gid, - rdev, - size, - blksize, - blocks, - atime, - atime_nsec, - mtime, - mtime_nsec, - ctime, - ctime_nsec); - if (-1 == ret) { - gf_log ("protocol/server", GF_LOG_DEBUG, - "asprintf failed while setting up stat buffer string"); - return NULL; - } - return tmp_buf; -} - - -void -server_loc_wipe (loc_t *loc) -{ - if (loc->parent) { - inode_unref (loc->parent); - loc->parent = NULL; - } - - if (loc->inode) { - inode_unref (loc->inode); - loc->inode = NULL; - } - - if (loc->path) - GF_FREE ((char *)loc->path); -} - - -void -server_resolve_wipe (server_resolve_t *resolve) -{ - struct resolve_comp *comp = NULL; - int i = 0; - - if (resolve->path) - GF_FREE (resolve->path); - - if (resolve->bname) - GF_FREE (resolve->bname); - - if (resolve->resolved) - GF_FREE (resolve->resolved); - - loc_wipe (&resolve->deep_loc); - - comp = resolve->components; - if (comp) { - for (i = 0; comp[i].basename; i++) { - if (comp[i].inode) - inode_unref (comp[i].inode); - } - GF_FREE (resolve->components); - } -} - - -void -free_state (server_state_t *state) -{ - if (state->trans) { - transport_unref (state->trans); - state->trans = NULL; - } - - if (state->fd) { - fd_unref (state->fd); - state->fd = NULL; - } - - if (state->iobref) { - iobref_unref (state->iobref); - state->iobref = NULL; - } - - if (state->iobuf) { - iobuf_unref (state->iobuf); - state->iobuf = NULL; - } - - if (state->dict) { - dict_unref (state->dict); - state->dict = NULL; - } - - if (state->volume) - GF_FREE ((char *)state->volume); - - if (state->name) - GF_FREE (state->name); - - server_loc_wipe (&state->loc); - server_loc_wipe (&state->loc2); - - server_resolve_wipe (&state->resolve); - server_resolve_wipe (&state->resolve2); - - GF_FREE (state); -} - - -call_frame_t * -server_copy_frame (call_frame_t *frame) -{ - call_frame_t *new_frame = NULL; - server_state_t *state = NULL, *new_state = NULL; - - state = frame->root->state; - - new_frame = copy_frame (frame); - - new_state = GF_CALLOC (1, sizeof (server_state_t), - gf_server_mt_server_state_t); - - new_frame->root->op = frame->root->op; - new_frame->root->type = frame->root->type; - new_frame->root->trans = state->trans; - new_frame->root->state = new_state; - - new_state->bound_xl = state->bound_xl; - new_state->trans = transport_ref (state->trans); - new_state->itable = state->itable; - - new_state->resolve.fd_no = -1; - new_state->resolve2.fd_no = -1; - - return new_frame; -} - - -int -gf_add_locker (struct _lock_table *table, const char *volume, - loc_t *loc, fd_t *fd, pid_t pid) -{ - int32_t ret = -1; - struct _locker *new = NULL; - uint8_t dir = 0; - - new = GF_CALLOC (1, sizeof (struct _locker), - gf_server_mt_locker); - if (new == NULL) { - gf_log ("server", GF_LOG_ERROR, - "failed to allocate memory for \'struct _locker\'"); - goto out; - } - INIT_LIST_HEAD (&new->lockers); - - new->volume = gf_strdup (volume); - - if (fd == NULL) { - loc_copy (&new->loc, loc); - dir = IA_ISDIR (new->loc.inode->ia_type); - } else { - new->fd = fd_ref (fd); - dir = IA_ISDIR (fd->inode->ia_type); - } - - new->pid = pid; - - LOCK (&table->lock); - { - if (dir) - list_add_tail (&new->lockers, &table->dir_lockers); - else - list_add_tail (&new->lockers, &table->file_lockers); - } - UNLOCK (&table->lock); -out: - return ret; -} - - -int -gf_del_locker (struct _lock_table *table, const char *volume, - loc_t *loc, fd_t *fd, pid_t pid) -{ - struct _locker *locker = NULL; - struct _locker *tmp = NULL; - int32_t ret = 0; - uint8_t dir = 0; - struct list_head *head = NULL; - struct list_head del; - - INIT_LIST_HEAD (&del); - - if (fd) { - dir = IA_ISDIR (fd->inode->ia_type); - } else { - dir = IA_ISDIR (loc->inode->ia_type); - } - - LOCK (&table->lock); - { - if (dir) { - head = &table->dir_lockers; - } else { - head = &table->file_lockers; - } - - list_for_each_entry_safe (locker, tmp, head, lockers) { - if (locker->fd && fd && - (locker->fd == fd) && (locker->pid == pid) - && !strcmp (locker->volume, volume)) { - list_move_tail (&locker->lockers, &del); - } else if (locker->loc.inode && - loc && - (locker->loc.inode == loc->inode) && - (locker->pid == pid) - && !strcmp (locker->volume, volume)) { - list_move_tail (&locker->lockers, &del); - } - } - } - UNLOCK (&table->lock); - - tmp = NULL; - locker = NULL; - - list_for_each_entry_safe (locker, tmp, &del, lockers) { - list_del_init (&locker->lockers); - if (locker->fd) - fd_unref (locker->fd); - else - loc_wipe (&locker->loc); - - GF_FREE (locker->volume); - GF_FREE (locker); - } - - return ret; -} - - -int -gf_direntry_to_bin (dir_entry_t *head, char *buffer) -{ - dir_entry_t *trav = NULL; - uint32_t len = 0; - uint32_t this_len = 0; - size_t buflen = -1; - char *ptr = NULL; - char *tmp_buf = NULL; - - trav = head->next; - while (trav) { - len += strlen (trav->name); - len += 1; - len += strlen (trav->link); - len += 1; /* for '\n' */ - len += 256; // max possible for statbuf; - trav = trav->next; - } - - ptr = buffer; - trav = head->next; - while (trav) { - tmp_buf = stat_to_str (&trav->buf); - /* tmp_buf will have \n before \0 */ - - this_len = sprintf (ptr, "%s/%s%s\n", - trav->name, tmp_buf, - trav->link); - - GF_FREE (tmp_buf); - trav = trav->next; - ptr += this_len; - } - - buflen = strlen (buffer); - - return buflen; -} - - -static struct _lock_table * -gf_lock_table_new (void) -{ - struct _lock_table *new = NULL; - - new = GF_CALLOC (1, sizeof (struct _lock_table), - gf_server_mt_lock_table); - if (new == NULL) { - gf_log ("server-protocol", GF_LOG_CRITICAL, - "failed to allocate memory for new lock table"); - goto out; - } - INIT_LIST_HEAD (&new->dir_lockers); - INIT_LIST_HEAD (&new->file_lockers); - LOCK_INIT (&new->lock); -out: - return new; -} - - -int -do_lock_table_cleanup (xlator_t *this, server_connection_t *conn, - call_frame_t *frame, struct _lock_table *ltable) -{ - struct list_head file_lockers, dir_lockers; - call_frame_t *tmp_frame = NULL; - struct flock flock = {0, }; - xlator_t *bound_xl = NULL; - struct _locker *locker = NULL, *tmp = NULL; - int ret = -1; - - bound_xl = conn->bound_xl; - INIT_LIST_HEAD (&file_lockers); - INIT_LIST_HEAD (&dir_lockers); - - LOCK (<able->lock); - { - list_splice_init (<able->file_lockers, - &file_lockers); - - list_splice_init (<able->dir_lockers, &dir_lockers); - } - UNLOCK (<able->lock); - - GF_FREE (ltable); - - flock.l_type = F_UNLCK; - flock.l_start = 0; - flock.l_len = 0; - list_for_each_entry_safe (locker, - tmp, &file_lockers, lockers) { - tmp_frame = copy_frame (frame); - if (tmp_frame == NULL) { - gf_log (this->name, GF_LOG_ERROR, - "out of memory"); - goto out; - } - /* - pid = 0 is a special case that tells posix-locks - to release all locks from this transport - */ - tmp_frame->root->pid = 0; - tmp_frame->root->trans = conn; - - if (locker->fd) { - STACK_WIND (tmp_frame, server_nop_cbk, - bound_xl, - bound_xl->fops->finodelk, - locker->volume, - locker->fd, F_SETLK, &flock); - fd_unref (locker->fd); - } else { - STACK_WIND (tmp_frame, server_nop_cbk, - bound_xl, - bound_xl->fops->inodelk, - locker->volume, - &(locker->loc), F_SETLK, &flock); - loc_wipe (&locker->loc); - } - - GF_FREE (locker->volume); - - list_del_init (&locker->lockers); - GF_FREE (locker); - } - - tmp = NULL; - locker = NULL; - list_for_each_entry_safe (locker, tmp, &dir_lockers, lockers) { - tmp_frame = copy_frame (frame); - - tmp_frame->root->pid = 0; - tmp_frame->root->trans = conn; - - if (locker->fd) { - STACK_WIND (tmp_frame, server_nop_cbk, - bound_xl, - bound_xl->fops->fentrylk, - locker->volume, - locker->fd, NULL, - ENTRYLK_UNLOCK, ENTRYLK_WRLCK); - fd_unref (locker->fd); - } else { - STACK_WIND (tmp_frame, server_nop_cbk, - bound_xl, - bound_xl->fops->entrylk, - locker->volume, - &(locker->loc), NULL, - ENTRYLK_UNLOCK, ENTRYLK_WRLCK); - loc_wipe (&locker->loc); - } - - GF_FREE (locker->volume); - - list_del_init (&locker->lockers); - GF_FREE (locker); - } - ret = 0; - -out: - return ret; -} - - -static int -server_connection_cleanup_flush_cbk (call_frame_t *frame, void *cookie, - xlator_t *this, int32_t op_ret, - int32_t op_errno) -{ - fd_t *fd = NULL; - - fd = frame->local; - - fd_unref (fd); - frame->local = NULL; - - STACK_DESTROY (frame->root); - return 0; -} - - -int -do_fd_cleanup (xlator_t *this, server_connection_t *conn, call_frame_t *frame, - fdentry_t *fdentries, int fd_count) -{ - fd_t *fd = NULL; - int i = 0, ret = -1; - call_frame_t *tmp_frame = NULL; - xlator_t *bound_xl = NULL; - - bound_xl = conn->bound_xl; - for (i = 0;i < fd_count; i++) { - fd = fdentries[i].fd; - - if (fd != NULL) { - tmp_frame = copy_frame (frame); - if (tmp_frame == NULL) { - gf_log (this->name, GF_LOG_ERROR, - "out of memory"); - goto out; - } - tmp_frame->local = fd; - - tmp_frame->root->pid = 0; - tmp_frame->root->trans = conn; - tmp_frame->root->lk_owner = 0; - STACK_WIND (tmp_frame, - server_connection_cleanup_flush_cbk, - bound_xl, bound_xl->fops->flush, fd); - } - } - - GF_FREE (fdentries); - ret = 0; - -out: - return ret; -} - -int -do_connection_cleanup (xlator_t *this, server_connection_t *conn, - struct _lock_table *ltable, fdentry_t *fdentries, int fd_count) -{ - int ret = 0; - int saved_ret = 0; - call_frame_t *frame = NULL; - server_state_t *state = NULL; - - frame = create_frame (this, this->ctx->pool); - if (frame == NULL) { - gf_log (this->name, GF_LOG_ERROR, "out of memory"); - goto out; - } - - saved_ret = do_lock_table_cleanup (this, conn, frame, ltable); - - if (fdentries != NULL) { - ret = do_fd_cleanup (this, conn, frame, fdentries, fd_count); - } - - state = CALL_STATE (frame); - if (state) - GF_FREE (state); - - STACK_DESTROY (frame->root); - - if (saved_ret || ret) { - ret = -1; - } - -out: - return ret; -} - - -int -server_connection_cleanup (xlator_t *this, server_connection_t *conn) -{ - char do_cleanup = 0; - struct _lock_table *ltable = NULL; - fdentry_t *fdentries = NULL; - uint32_t fd_count = 0; - int ret = 0; - - if (conn == NULL) { - goto out; - } - - pthread_mutex_lock (&conn->lock); - { - conn->active_transports--; - if (conn->active_transports == 0) { - if (conn->ltable) { - ltable = conn->ltable; - conn->ltable = gf_lock_table_new (); - } - - if (conn->fdtable) { - fdentries = gf_fd_fdtable_get_all_fds (conn->fdtable, - &fd_count); - } - do_cleanup = 1; - } - } - pthread_mutex_unlock (&conn->lock); - - if (do_cleanup && conn->bound_xl) - ret = do_connection_cleanup (this, conn, ltable, fdentries, fd_count); - -out: - return ret; -} - - -int -server_connection_destroy (xlator_t *this, server_connection_t *conn) -{ - call_frame_t *frame = NULL, *tmp_frame = NULL; - xlator_t *bound_xl = NULL; - int32_t ret = -1; - server_state_t *state = NULL; - struct list_head file_lockers; - struct list_head dir_lockers; - struct _lock_table *ltable = NULL; - struct _locker *locker = NULL, *tmp = NULL; - struct flock flock = {0,}; - fd_t *fd = NULL; - int32_t i = 0; - fdentry_t *fdentries = NULL; - uint32_t fd_count = 0; - - if (conn == NULL) { - ret = 0; - goto out; - } - - bound_xl = (xlator_t *) (conn->bound_xl); - - if (bound_xl) { - /* trans will have ref_count = 1 after this call, but its - ok since this function is called in - GF_EVENT_TRANSPORT_CLEANUP */ - frame = create_frame (this, this->ctx->pool); - - pthread_mutex_lock (&(conn->lock)); - { - if (conn->ltable) { - ltable = conn->ltable; - conn->ltable = NULL; - } - } - pthread_mutex_unlock (&conn->lock); - - INIT_LIST_HEAD (&file_lockers); - INIT_LIST_HEAD (&dir_lockers); - - LOCK (<able->lock); - { - list_splice_init (<able->file_lockers, - &file_lockers); - - list_splice_init (<able->dir_lockers, &dir_lockers); - } - UNLOCK (<able->lock); - GF_FREE (ltable); - - flock.l_type = F_UNLCK; - flock.l_start = 0; - flock.l_len = 0; - list_for_each_entry_safe (locker, - tmp, &file_lockers, lockers) { - tmp_frame = copy_frame (frame); - /* - pid = 0 is a special case that tells posix-locks - to release all locks from this transport - */ - tmp_frame->root->pid = 0; - tmp_frame->root->trans = conn; - - if (locker->fd) { - STACK_WIND (tmp_frame, server_nop_cbk, - bound_xl, - bound_xl->fops->finodelk, - locker->volume, - locker->fd, F_SETLK, &flock); - fd_unref (locker->fd); - } else { - STACK_WIND (tmp_frame, server_nop_cbk, - bound_xl, - bound_xl->fops->inodelk, - locker->volume, - &(locker->loc), F_SETLK, &flock); - loc_wipe (&locker->loc); - } - - GF_FREE (locker->volume); - - list_del_init (&locker->lockers); - GF_FREE (locker); - } - - tmp = NULL; - locker = NULL; - list_for_each_entry_safe (locker, tmp, &dir_lockers, lockers) { - tmp_frame = copy_frame (frame); - - tmp_frame->root->pid = 0; - tmp_frame->root->trans = conn; - - if (locker->fd) { - STACK_WIND (tmp_frame, server_nop_cbk, - bound_xl, - bound_xl->fops->fentrylk, - locker->volume, - locker->fd, NULL, - ENTRYLK_UNLOCK, ENTRYLK_WRLCK); - fd_unref (locker->fd); - } else { - STACK_WIND (tmp_frame, server_nop_cbk, - bound_xl, - bound_xl->fops->entrylk, - locker->volume, - &(locker->loc), NULL, - ENTRYLK_UNLOCK, ENTRYLK_WRLCK); - loc_wipe (&locker->loc); - } - - GF_FREE (locker->volume); - - - list_del_init (&locker->lockers); - GF_FREE (locker); - } - - pthread_mutex_lock (&(conn->lock)); - { - if (conn->fdtable) { - fdentries = gf_fd_fdtable_get_all_fds (conn->fdtable, - &fd_count); - gf_fd_fdtable_destroy (conn->fdtable); - conn->fdtable = NULL; - } - } - pthread_mutex_unlock (&conn->lock); - - if (fdentries != NULL) { - for (i = 0; i < fd_count; i++) { - fd = fdentries[i].fd; - if (fd != NULL) { - tmp_frame = copy_frame (frame); - tmp_frame->local = fd; - - STACK_WIND (tmp_frame, - server_connection_cleanup_flush_cbk, - bound_xl, - bound_xl->fops->flush, - fd); - } - } - GF_FREE (fdentries); - } - } - - if (frame) { - state = CALL_STATE (frame); - if (state) - GF_FREE (state); - STACK_DESTROY (frame->root); - } - - gf_log (this->name, GF_LOG_INFO, "destroyed connection of %s", - conn->id); - - GF_FREE (conn->id); - GF_FREE (conn); - -out: - return ret; -} - - -server_connection_t * -server_connection_get (xlator_t *this, const char *id) -{ - server_connection_t *conn = NULL; - server_connection_t *trav = NULL; - server_conf_t *conf = NULL; - - conf = this->private; - - pthread_mutex_lock (&conf->mutex); - { - list_for_each_entry (trav, &conf->conns, list) { - if (!strcmp (id, trav->id)) { - conn = trav; - break; - } - } - - if (!conn) { - conn = (void *) GF_CALLOC (1, sizeof (*conn), - gf_server_mt_server_connection_t); - - conn->id = gf_strdup (id); - conn->fdtable = gf_fd_fdtable_alloc (); - conn->ltable = gf_lock_table_new (); - - pthread_mutex_init (&conn->lock, NULL); - - list_add (&conn->list, &conf->conns); - } - - conn->ref++; - conn->active_transports++; - } - pthread_mutex_unlock (&conf->mutex); - - return conn; -} - - -void -server_connection_put (xlator_t *this, server_connection_t *conn) -{ - server_conf_t *conf = NULL; - server_connection_t *todel = NULL; - - if (conn == NULL) { - goto out; - } - - conf = this->private; - - pthread_mutex_lock (&conf->mutex); - { - conn->ref--; - - if (!conn->ref) { - list_del_init (&conn->list); - todel = conn; - } - } - pthread_mutex_unlock (&conf->mutex); - - if (todel) { - server_connection_destroy (this, todel); - } - -out: - return; -} -- cgit