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-rw-r--r--xlators/mount/fuse/src/fuse-resolve.c701
1 files changed, 422 insertions, 279 deletions
diff --git a/xlators/mount/fuse/src/fuse-resolve.c b/xlators/mount/fuse/src/fuse-resolve.c
index 755e2f429..8565ce0e4 100644
--- a/xlators/mount/fuse/src/fuse-resolve.c
+++ b/xlators/mount/fuse/src/fuse-resolve.c
@@ -1,22 +1,12 @@
/*
- Copyright (c) 2010-2011 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) 2010-2012 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"
@@ -30,7 +20,13 @@ fuse_resolve_all (fuse_state_t *state);
int fuse_resolve_continue (fuse_state_t *state);
int fuse_resolve_entry_simple (fuse_state_t *state);
int fuse_resolve_inode_simple (fuse_state_t *state);
+int fuse_migrate_fd (xlator_t *this, fd_t *fd, xlator_t *old_subvol,
+ xlator_t *new_subvol);
+fuse_fd_ctx_t *
+fuse_fd_ctx_get (xlator_t *this, fd_t *fd);
+
+gf_boolean_t fuse_inode_needs_lookup (inode_t *inode, xlator_t *this);
static int
fuse_resolve_loc_touchup (fuse_state_t *state)
@@ -46,8 +42,11 @@ fuse_resolve_loc_touchup (fuse_state_t *state)
if (!loc->path) {
if (loc->parent && resolve->bname) {
ret = inode_path (loc->parent, resolve->bname, &path);
+ uuid_copy (loc->pargfid, loc->parent->gfid);
+ loc->name = resolve->bname;
} else if (loc->inode) {
ret = inode_path (loc->inode, NULL, &path);
+ uuid_copy (loc->gfid, loc->inode->gfid);
}
if (ret)
gf_log (THIS->name, GF_LOG_TRACE,
@@ -60,10 +59,10 @@ fuse_resolve_loc_touchup (fuse_state_t *state)
int
-fuse_resolve_gfid_entry_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
- int op_ret, int op_errno, inode_t *inode,
- struct iatt *buf, dict_t *xattr,
- struct iatt *postparent)
+fuse_resolve_entry_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
+ int op_ret, int op_errno, inode_t *inode,
+ struct iatt *buf, dict_t *xattr,
+ struct iatt *postparent)
{
fuse_state_t *state = NULL;
fuse_resolve_t *resolve = NULL;
@@ -77,23 +76,20 @@ fuse_resolve_gfid_entry_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
STACK_DESTROY (frame->root);
if (op_ret == -1) {
- gf_log (this->name, ((op_errno == ENOENT) ? GF_LOG_DEBUG :
- GF_LOG_WARNING),
+ gf_log (this->name, (op_errno == ENOENT)
+ ? GF_LOG_DEBUG : GF_LOG_WARNING,
"%s/%s: failed to resolve (%s)",
uuid_utoa (resolve_loc->pargfid), resolve_loc->name,
strerror (op_errno));
+ resolve->op_ret = -1;
+ resolve->op_errno = op_errno;
goto out;
}
link_inode = inode_link (inode, resolve_loc->parent,
resolve_loc->name, buf);
- if (!link_inode)
- goto out;
-
- inode_lookup (link_inode);
-
- inode_unref (link_inode);
+ state->loc_now->inode = link_inode;
out:
loc_wipe (resolve_loc);
@@ -104,55 +100,85 @@ out:
int
+fuse_resolve_entry (fuse_state_t *state)
+{
+ fuse_resolve_t *resolve = NULL;
+ loc_t *resolve_loc = NULL;
+
+ resolve = state->resolve_now;
+ resolve_loc = &resolve->resolve_loc;
+
+ resolve_loc->parent = inode_ref (state->loc_now->parent);
+ uuid_copy (resolve_loc->pargfid, state->loc_now->pargfid);
+ resolve_loc->name = resolve->bname;
+ resolve_loc->inode = inode_new (state->itable);
+
+ inode_path (resolve_loc->parent, resolve_loc->name,
+ (char **) &resolve_loc->path);
+
+ FUSE_FOP (state, fuse_resolve_entry_cbk, GF_FOP_LOOKUP,
+ lookup, resolve_loc, NULL);
+
+ return 0;
+}
+
+
+int
fuse_resolve_gfid_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
- int op_ret, int op_errno, inode_t *inode, struct iatt *buf,
- dict_t *xattr, struct iatt *postparent)
+ int op_ret, int op_errno, inode_t *inode,
+ struct iatt *buf, dict_t *xattr, struct iatt *postparent)
{
fuse_state_t *state = NULL;
fuse_resolve_t *resolve = NULL;
inode_t *link_inode = NULL;
- loc_t *resolve_loc = NULL;
+ loc_t *loc_now = NULL;
state = frame->root->state;
resolve = state->resolve_now;
- resolve_loc = &resolve->resolve_loc;
+ loc_now = state->loc_now;
STACK_DESTROY (frame->root);
if (op_ret == -1) {
- gf_log (this->name, ((op_errno == ENOENT) ? GF_LOG_DEBUG :
- GF_LOG_WARNING),
+ gf_log (this->name, (op_errno == ENOENT)
+ ? GF_LOG_DEBUG : GF_LOG_WARNING,
"%s: failed to resolve (%s)",
- uuid_utoa (resolve_loc->gfid), strerror (op_errno));
+ uuid_utoa (resolve->resolve_loc.gfid),
+ strerror (op_errno));
loc_wipe (&resolve->resolve_loc);
+
+ /* resolve->op_ret can have 3 values: 0, -1, -2.
+ * 0 : resolution was successful.
+ * -1: parent inode could not be resolved.
+ * -2: entry (inode corresponding to path) could not be resolved
+ */
+
+ if (uuid_is_null (resolve->gfid)) {
+ resolve->op_ret = -1;
+ } else {
+ resolve->op_ret = -2;
+ }
+
+ resolve->op_errno = op_errno;
goto out;
}
- loc_wipe (resolve_loc);
+ loc_wipe (&resolve->resolve_loc);
link_inode = inode_link (inode, NULL, NULL, buf);
if (!link_inode)
goto out;
- inode_lookup (link_inode);
-
- if (uuid_is_null (resolve->pargfid)) {
- inode_unref (link_inode);
- goto out;
- }
+ if (!uuid_is_null (resolve->gfid)) {
+ loc_now->inode = link_inode;
+ goto out;
+ }
- resolve_loc->parent = link_inode;
- uuid_copy (resolve_loc->pargfid, resolve_loc->parent->gfid);
-
- resolve_loc->name = resolve->bname;
-
- resolve_loc->inode = inode_new (state->itable);
- inode_path (resolve_loc->parent, resolve_loc->name,
- (char **) &resolve_loc->path);
+ loc_now->parent = link_inode;
+ uuid_copy (loc_now->pargfid, link_inode->gfid);
- FUSE_FOP (state, fuse_resolve_gfid_entry_cbk, GF_FOP_LOOKUP,
- lookup, &resolve->resolve_loc, NULL);
+ fuse_resolve_entry (state);
return 0;
out:
@@ -173,245 +199,436 @@ fuse_resolve_gfid (fuse_state_t *state)
if (!uuid_is_null (resolve->pargfid)) {
uuid_copy (resolve_loc->gfid, resolve->pargfid);
- resolve_loc->inode = inode_new (state->itable);
- ret = inode_path (resolve_loc->inode, NULL,
- (char **)&resolve_loc->path);
} else if (!uuid_is_null (resolve->gfid)) {
uuid_copy (resolve_loc->gfid, resolve->gfid);
- resolve_loc->inode = inode_new (state->itable);
- ret = inode_path (resolve_loc->inode, NULL,
- (char **)&resolve_loc->path);
}
+
+ /* inode may already exist in case we are looking up an inode which was
+ linked through readdirplus */
+ resolve_loc->inode = inode_find (state->itable, resolve_loc->gfid);
+ if (!resolve_loc->inode)
+ resolve_loc->inode = inode_new (state->itable);
+ ret = loc_path (resolve_loc, NULL);
+
if (ret <= 0) {
gf_log (THIS->name, GF_LOG_WARNING,
- "failed to get the path from inode %s",
+ "failed to get the path for inode %s",
uuid_utoa (resolve->gfid));
}
FUSE_FOP (state, fuse_resolve_gfid_cbk, GF_FOP_LOOKUP,
- lookup, &resolve->resolve_loc, NULL);
+ lookup, resolve_loc, NULL);
return 0;
}
+/*
+ * Return value:
+ * 0 - resolved parent and entry (as necessary)
+ * -1 - resolved parent but not entry (though necessary)
+ * 1 - resolved neither parent nor entry
+ */
+
int
-fuse_resolve_continue (fuse_state_t *state)
+fuse_resolve_parent_simple (fuse_state_t *state)
{
- fuse_resolve_t *resolve = NULL;
- int ret = 0;
+ fuse_resolve_t *resolve = NULL;
+ loc_t *loc = NULL;
+ inode_t *parent = NULL;
+ inode_t *inode = NULL;
resolve = state->resolve_now;
+ loc = state->loc_now;
+
+ loc->name = resolve->bname;
+
+ parent = resolve->parhint;
+ if (parent->table == state->itable) {
+ if (fuse_inode_needs_lookup (parent, THIS))
+ return 1;
+
+ /* no graph switches since */
+ loc->parent = inode_ref (parent);
+ uuid_copy (loc->pargfid, parent->gfid);
+ loc->inode = inode_grep (state->itable, parent, loc->name);
+
+ /* nodeid for root is 1 and we blindly take the latest graph's
+ * table->root as the parhint and because of this there is
+ * ambiguity whether the entry should have existed or not, and
+ * we took the conservative approach of assuming entry should
+ * have been there even though it need not have (bug #804592).
+ */
+ if ((loc->inode == NULL)
+ && __is_root_gfid (parent->gfid)) {
+ /* non decisive result - entry missing */
+ return -1;
+ }
- resolve->op_ret = 0;
- resolve->op_errno = 0;
+ /* decisive result - resolution success */
+ return 0;
+ }
- /* TODO: should we handle 'fd' here ? */
- if (!uuid_is_null (resolve->pargfid))
- ret = fuse_resolve_entry_simple (state);
- else if (!uuid_is_null (resolve->gfid))
- ret = fuse_resolve_inode_simple (state);
- if (ret)
- gf_log (THIS->name, GF_LOG_DEBUG,
- "return value of resolve_*_simple %d", ret);
+ parent = inode_find (state->itable, resolve->pargfid);
+ if (!parent) {
+ /* non decisive result - parent missing */
+ return 1;
+ }
+ if (fuse_inode_needs_lookup (parent, THIS)) {
+ inode_unref (parent);
+ return 1;
+ }
+
+ loc->parent = parent;
+ uuid_copy (loc->pargfid, resolve->pargfid);
+
+ inode = inode_grep (state->itable, parent, loc->name);
+ if (inode) {
+ loc->inode = inode;
+ /* decisive result - resolution success */
+ return 0;
+ }
+
+ /* non decisive result - entry missing */
+ return -1;
+}
- fuse_resolve_loc_touchup (state);
- fuse_resolve_all (state);
+int
+fuse_resolve_parent (fuse_state_t *state)
+{
+ int ret = 0;
+
+ ret = fuse_resolve_parent_simple (state);
+ if (ret > 0) {
+ fuse_resolve_gfid (state);
+ return 0;
+ }
+
+ if (ret < 0) {
+ fuse_resolve_entry (state);
+ return 0;
+ }
+
+ fuse_resolve_continue (state);
return 0;
}
-/*
- Check if the requirements are fulfilled by entries in the inode cache itself
- Return value:
- <= 0 - simple resolution was decisive and complete (either success or failure)
- > 0 - indecisive, need to perform deep resolution
-*/
-
int
-fuse_resolve_entry_simple (fuse_state_t *state)
+fuse_resolve_inode_simple (fuse_state_t *state)
{
fuse_resolve_t *resolve = NULL;
- inode_t *parent = NULL;
- inode_t *inode = NULL;
- int ret = 0;
+ loc_t *loc = NULL;
+ inode_t *inode = NULL;
resolve = state->resolve_now;
+ loc = state->loc_now;
+
+ inode = resolve->hint;
+ if (inode->table == state->itable)
+ inode_ref (inode);
+ else
+ inode = inode_find (state->itable, resolve->gfid);
+
+ if (inode) {
+ if (!fuse_inode_needs_lookup (inode, THIS))
+ goto found;
+ /* inode was linked through readdirplus */
+ inode_unref (inode);
+ }
+
+ return 1;
+found:
+ loc->inode = inode;
+ return 0;
+}
- parent = inode_find (state->itable, resolve->pargfid);
- if (!parent) {
- /* simple resolution is indecisive. need to perform
- deep resolution */
- resolve->op_ret = -1;
- resolve->op_errno = ENOENT;
- ret = 1;
- goto out;
- }
- /* expected @parent was found from the inode cache */
- if (state->loc_now->parent) {
- inode_unref (state->loc_now->parent);
+int
+fuse_resolve_inode (fuse_state_t *state)
+{
+ int ret = 0;
+
+ ret = fuse_resolve_inode_simple (state);
+
+ if (ret > 0) {
+ fuse_resolve_gfid (state);
+ return 0;
}
- state->loc_now->parent = inode_ref (parent);
+ fuse_resolve_continue (state);
+
+ return 0;
+}
+
- inode = inode_grep (state->itable, parent, resolve->bname);
- if (!inode) {
- resolve->op_ret = -1;
- resolve->op_errno = ENOENT;
- ret = 1;
+int
+fuse_migrate_fd_task (void *data)
+{
+ int ret = -1;
+ fuse_state_t *state = NULL;
+ fd_t *basefd = NULL, *oldfd = NULL;
+ fuse_fd_ctx_t *basefd_ctx = NULL;
+ xlator_t *old_subvol = NULL;
+
+ state = data;
+ if (state == NULL) {
goto out;
}
- ret = 0;
+ basefd = state->fd;
- if (state->loc_now->inode) {
- inode_unref (state->loc_now->inode);
- state->loc_now->inode = NULL;
+ basefd_ctx = fuse_fd_ctx_get (state->this, basefd);
+
+ LOCK (&basefd->lock);
+ {
+ oldfd = basefd_ctx->activefd ? basefd_ctx->activefd : basefd;
+ fd_ref (oldfd);
}
+ UNLOCK (&basefd->lock);
- state->loc_now->inode = inode_ref (inode);
- uuid_copy (state->loc_now->gfid, resolve->gfid);
+ old_subvol = oldfd->inode->table->xl;
-out:
- if (parent)
- inode_unref (parent);
+ ret = fuse_migrate_fd (state->this, basefd, old_subvol,
+ state->active_subvol);
+
+ LOCK (&basefd->lock);
+ {
+ if (ret < 0) {
+ basefd_ctx->migration_failed = 1;
+ } else {
+ basefd_ctx->migration_failed = 0;
+ }
+ }
+ UNLOCK (&basefd->lock);
+
+ ret = 0;
- if (inode)
- inode_unref (inode);
+out:
+ if (oldfd)
+ fd_unref (oldfd);
return ret;
}
-int
-fuse_resolve_entry (fuse_state_t *state)
+static inline int
+fuse_migrate_fd_error (xlator_t *this, fd_t *fd)
{
- int ret = 0;
- loc_t *loc = NULL;
-
- loc = state->loc_now;
+ fuse_fd_ctx_t *fdctx = NULL;
+ char error = 0;
- ret = fuse_resolve_entry_simple (state);
- if (ret > 0) {
- loc_wipe (loc);
- fuse_resolve_gfid (state);
- return 0;
+ fdctx = fuse_fd_ctx_get (this, fd);
+ if (fdctx != NULL) {
+ if (fdctx->migration_failed) {
+ error = 1;
+ }
}
- if (ret == 0)
- fuse_resolve_loc_touchup (state);
-
- fuse_resolve_all (state);
-
- return 0;
+ return error;
}
+#define FUSE_FD_GET_ACTIVE_FD(activefd, basefd) \
+ do { \
+ LOCK (&basefd->lock); \
+ { \
+ activefd = basefd_ctx->activefd ? \
+ basefd_ctx->activefd : basefd; \
+ if (activefd != basefd) { \
+ fd_ref (activefd); \
+ } \
+ } \
+ UNLOCK (&basefd->lock); \
+ \
+ if (activefd == basefd) { \
+ fd_ref (activefd); \
+ } \
+ } while (0);
-int
-fuse_resolve_inode_simple (fuse_state_t *state)
+
+static int
+fuse_resolve_fd (fuse_state_t *state)
{
- fuse_resolve_t *resolve = NULL;
- inode_t *inode = NULL;
- int ret = 0;
+ fuse_resolve_t *resolve = NULL;
+ fd_t *basefd = NULL, *activefd = NULL;
+ xlator_t *active_subvol = NULL, *this = NULL;
+ int ret = 0;
+ char fd_migration_error = 0;
+ fuse_fd_ctx_t *basefd_ctx = NULL;
resolve = state->resolve_now;
- inode = inode_find (state->itable, resolve->gfid);
- if (!inode) {
- resolve->op_ret = -1;
- resolve->op_errno = ENOENT;
- ret = 1;
- goto out;
+ this = state->this;
+
+ basefd = resolve->fd;
+ basefd_ctx = fuse_fd_ctx_get (this, basefd);
+ if (basefd_ctx == NULL) {
+ gf_log (state->this->name, GF_LOG_WARNING,
+ "fdctx is NULL for basefd (ptr:%p inode-gfid:%s), "
+ "resolver erroring out with errno EINVAL",
+ basefd, uuid_utoa (basefd->inode->gfid));
+ resolve->op_ret = -1;
+ resolve->op_errno = EINVAL;
+ goto resolve_continue;
}
- ret = 0;
+ FUSE_FD_GET_ACTIVE_FD (activefd, basefd);
+
+ active_subvol = activefd->inode->table->xl;
+
+ fd_migration_error = fuse_migrate_fd_error (state->this, basefd);
+ if (fd_migration_error) {
+ resolve->op_ret = -1;
+ resolve->op_errno = EBADF;
+ } else if (state->active_subvol != active_subvol) {
+ ret = synctask_new (state->this->ctx->env, fuse_migrate_fd_task,
+ NULL, NULL, state);
+
+ fd_migration_error = fuse_migrate_fd_error (state->this,
+ basefd);
+ fd_unref (activefd);
+
+ FUSE_FD_GET_ACTIVE_FD (activefd, basefd);
+ active_subvol = activefd->inode->table->xl;
+
+ if ((ret == -1) || fd_migration_error
+ || (state->active_subvol != active_subvol)) {
+ if (ret == -1) {
+ gf_log (state->this->name, GF_LOG_WARNING,
+ "starting sync-task to migrate "
+ "basefd (ptr:%p inode-gfid:%s) failed "
+ "(old-subvolume:%s-%d "
+ "new-subvolume:%s-%d)",
+ basefd,
+ uuid_utoa (basefd->inode->gfid),
+ active_subvol->name,
+ active_subvol->graph->id,
+ state->active_subvol->name,
+ state->active_subvol->graph->id);
+ } else {
+ gf_log (state->this->name, GF_LOG_WARNING,
+ "fd migration of basefd "
+ "(ptr:%p inode-gfid:%s) failed "
+ "(old-subvolume:%s-%d "
+ "new-subvolume:%s-%d)",
+ basefd,
+ uuid_utoa (basefd->inode->gfid),
+ active_subvol->name,
+ active_subvol->graph->id,
+ state->active_subvol->name,
+ state->active_subvol->graph->id);
+ }
+
+ resolve->op_ret = -1;
+ resolve->op_errno = EBADF;
+ } else {
+ gf_log (state->this->name, GF_LOG_DEBUG,
+ "basefd (ptr:%p inode-gfid:%s) migrated "
+ "successfully in resolver "
+ "(old-subvolume:%s-%d new-subvolume:%s-%d)",
+ basefd, uuid_utoa (basefd->inode->gfid),
+ active_subvol->name, active_subvol->graph->id,
+ state->active_subvol->name,
+ state->active_subvol->graph->id);
+ }
+ }
- if (state->loc_now->inode) {
- inode_unref (state->loc_now->inode);
+ if ((resolve->op_ret == -1) && (resolve->op_errno == EBADF)) {
+ gf_log ("fuse-resolve", GF_LOG_WARNING,
+ "migration of basefd (ptr:%p inode-gfid:%s) "
+ "did not complete, failing fop with EBADF "
+ "(old-subvolume:%s-%d new-subvolume:%s-%d)", basefd,
+ uuid_utoa (basefd->inode->gfid),
+ active_subvol->name, active_subvol->graph->id,
+ state->active_subvol->name,
+ state->active_subvol->graph->id);
}
- state->loc_now->inode = inode_ref (inode);
- uuid_copy (state->loc_now->gfid, resolve->gfid);
+ if (activefd != basefd) {
+ state->fd = fd_ref (activefd);
+ fd_unref (basefd);
+ }
-out:
- if (inode)
- inode_unref (inode);
+ /* state->active_subvol = active_subvol; */
- return ret;
+resolve_continue:
+ if (activefd != NULL) {
+ fd_unref (activefd);
+ }
+
+ fuse_resolve_continue (state);
+
+ return 0;
}
int
-fuse_resolve_inode (fuse_state_t *state)
+fuse_gfid_set (fuse_state_t *state)
{
- int ret = 0;
- loc_t *loc = NULL;
+ int ret = 0;
- loc = state->loc_now;
+ if (uuid_is_null (state->gfid))
+ goto out;
- ret = fuse_resolve_inode_simple (state);
+ if (!state->xdata)
+ state->xdata = dict_new ();
- if (ret > 0) {
- loc_wipe (loc);
- fuse_resolve_gfid (state);
- return 0;
+ if (!state->xdata) {
+ ret = -1;
+ goto out;
}
- if (ret == 0)
- fuse_resolve_loc_touchup (state);
-
- fuse_resolve_all (state);
-
- return 0;
+ ret = dict_set_static_bin (state->xdata, "gfid-req",
+ state->gfid, sizeof (state->gfid));
+out:
+ return ret;
}
-static int
-fuse_resolve_fd (fuse_state_t *state)
+
+int
+fuse_resolve_entry_init (fuse_state_t *state, fuse_resolve_t *resolve,
+ ino_t par, char *name)
{
- fuse_resolve_t *resolve = NULL;
- fd_t *fd = NULL;
- int ret = 0;
- uint64_t tmp_fd_ctx = 0;
- char *path = NULL;
- char *name = NULL;
+ inode_t *parent = NULL;
- resolve = state->resolve_now;
+ parent = fuse_ino_to_inode (par, state->this);
+ uuid_copy (resolve->pargfid, parent->gfid);
+ resolve->parhint = parent;
+ resolve->bname = gf_strdup (name);
- fd = resolve->fd;
+ return 0;
+}
- ret = fd_ctx_get (fd, state->this, &tmp_fd_ctx);
- if (!ret) {
- state->fd = (fd_t *)(long)tmp_fd_ctx;
- fd_ref (state->fd);
- fuse_resolve_all (state);
- goto out;
- }
- ret = inode_path (fd->inode, 0, &path);
- if (ret <= 0)
- gf_log ("", GF_LOG_WARNING,
- "failed to do inode-path on fd %d %s", ret, path);
+int
+fuse_resolve_inode_init (fuse_state_t *state, fuse_resolve_t *resolve,
+ ino_t ino)
+{
+ inode_t *inode = NULL;
- name = strrchr (path, '/');
- if (name)
- name++;
+ inode = fuse_ino_to_inode (ino, state->this);
+ uuid_copy (resolve->gfid, inode->gfid);
+ resolve->hint = inode;
- resolve->path = path;
- resolve->bname = gf_strdup (name);
+ return 0;
+}
- state->loc_now = &state->loc;
-out:
- return 0;
+int
+fuse_resolve_fd_init (fuse_state_t *state, fuse_resolve_t *resolve,
+ fd_t *fd)
+{
+ resolve->fd = fd_ref (fd);
+
+ return 0;
}
static int
fuse_resolve (fuse_state_t *state)
- {
+{
fuse_resolve_t *resolve = NULL;
resolve = state->resolve_now;
@@ -422,17 +639,13 @@ fuse_resolve (fuse_state_t *state)
} else if (!uuid_is_null (resolve->pargfid)) {
- fuse_resolve_entry (state);
+ fuse_resolve_parent (state);
} else if (!uuid_is_null (resolve->gfid)) {
fuse_resolve_inode (state);
} else {
-
- resolve->op_ret = 0;
- resolve->op_errno = EINVAL;
-
fuse_resolve_all (state);
}
@@ -445,17 +658,10 @@ fuse_resolve_done (fuse_state_t *state)
{
fuse_resume_fn_t fn = NULL;
- if (state->resolve.op_ret || state->resolve2.op_ret) {
- send_fuse_err (state->this, state->finh,
- state->resolve.op_errno);
- free_fuse_state (state);
- goto out;
- }
fn = state->resume_fn;
- if (fn)
- fn (state);
-out:
+ fn (state);
+
return 0;
}
@@ -495,87 +701,24 @@ fuse_resolve_all (fuse_state_t *state)
int
-fuse_gfid_set (fuse_state_t *state)
+fuse_resolve_continue (fuse_state_t *state)
{
- int ret = 0;
-
- if (uuid_is_null (state->gfid))
- goto out;
-
- if (!state->dict)
- state->dict = dict_new ();
+ fuse_resolve_loc_touchup (state);
- if (!state->dict) {
- ret = -1;
- goto out;
- }
+ fuse_resolve_all (state);
- ret = dict_set_static_bin (state->dict, "gfid-req",
- state->gfid, sizeof (state->gfid));
-out:
- return ret;
+ return 0;
}
int
fuse_resolve_and_resume (fuse_state_t *state, fuse_resume_fn_t fn)
{
- xlator_t *inode_xl = NULL;
- xlator_t *active_xl = NULL;
-
fuse_gfid_set (state);
state->resume_fn = fn;
- active_xl = fuse_active_subvol (state->this);
- inode_xl = fuse_state_subvol (state);
- if (!inode_xl && state->loc.parent)
- inode_xl = state->loc.parent->table->xl;
-
- /* If inode or fd is already in new graph, goto resume */
- if (inode_xl == active_xl) {
- /* Lets move to resume if there is no other inode to check */
- if (!(state->loc2.parent || state->loc2.inode))
- goto resume;
-
- inode_xl = NULL;
- /* We have to make sure both inodes we are
- working on are in same inode table */
- if (state->loc2.inode)
- inode_xl = state->loc2.inode->table->xl;
- if (!inode_xl && state->loc2.parent)
- inode_xl = state->loc2.parent->table->xl;
-
- if (inode_xl == active_xl)
- goto resume;
- }
-
-
- /* If the resolve is for 'fd' and its open with 'write' flag
- set, don't switch to new graph yet */
-
- /* TODO: fix it later */
- /* if (state->fd && ((state->fd->flags & O_RDWR) ||
- (state->fd->flags & O_WRONLY)))
- */
- if (state->fd)
- goto resume;
-
- /*
- if (state->fd) {
- state->resolve.fd = state->fd;
- state->fd = NULL; // TODO: we may need a 'fd_unref()' here, not very sure'
- }
- */
-
- /* now we have to resolve the inode to 'itable' */
- state->itable = active_xl->itable;
-
fuse_resolve_all (state);
return 0;
-resume:
- fn (state);
-
- return 0;
}
generated by cgit (git 2.34.1) at 2026-01-05 23:31:01 +0000