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-rw-r--r--xlators/mount/fuse/src/fuse-bridge.c395
1 files changed, 232 insertions, 163 deletions
diff --git a/xlators/mount/fuse/src/fuse-bridge.c b/xlators/mount/fuse/src/fuse-bridge.c
index 74087fc6da4..483c6c9fec5 100644
--- a/xlators/mount/fuse/src/fuse-bridge.c
+++ b/xlators/mount/fuse/src/fuse-bridge.c
@@ -91,23 +91,31 @@ struct fuse_private {
size_t volfile_size;
char *mount_point;
struct iobuf *iobuf;
+
pthread_t fuse_thread;
char fuse_thread_started;
+
uint32_t direct_io_mode;
size_t *msg0_len_p;
+
double entry_timeout;
double attribute_timeout;
- pthread_cond_t first_call_cond;
- pthread_mutex_t first_call_mutex;
- char first_call;
+
+ pthread_cond_t sync_cond;
+ pthread_mutex_t sync_mutex;
+ char child_up;
+
+ char init_recvd;
+
gf_boolean_t strict_volfile_check;
- pthread_cond_t child_up_cond;
- pthread_mutex_t child_up_mutex;
- char child_up_value;
+
fuse_handler_t **fuse_ops;
fuse_handler_t **fuse_ops0;
pthread_mutex_t fuse_dump_mutex;
int fuse_dump_fd;
+
+ glusterfs_graph_t *next_graph;
+ xlator_t *active_subvol;
};
typedef struct fuse_private fuse_private_t;
@@ -138,8 +146,7 @@ typedef struct fuse_private fuse_private_t;
free_state (state); \
return; \
} \
- xl = frame->this->children ? \
- frame->this->children->xlator : NULL; \
+ xl = fuse_state_subvol (state); \
\
frame->root->state = state; \
frame->root->op = op_num; \
@@ -190,6 +197,35 @@ typedef struct {
} fuse_state_t;
+xlator_t *
+fuse_state_subvol (fuse_state_t *state)
+{
+ xlator_t *subvol = NULL;
+
+ if (!state)
+ return NULL;
+
+ if (state->loc.inode)
+ subvol = state->loc.inode->table->xl;
+
+ if (state->fd)
+ subvol = state->fd->inode->table->xl;
+
+ return subvol;
+}
+
+
+xlator_t *
+fuse_active_subvol (xlator_t *fuse)
+{
+ fuse_private_t *priv = NULL;
+
+ priv = fuse->private;
+
+ return priv->active_subvol;
+}
+
+
static void
free_state (fuse_state_t *state)
{
@@ -231,7 +267,6 @@ get_state (xlator_t *this, fuse_in_header_t *finh)
if (!state)
return NULL;
state->pool = this->ctx->pool;
- state->itable = this->itable;
state->finh = finh;
state->this = this;
@@ -349,12 +384,14 @@ send_fuse_err (xlator_t *this, fuse_in_header_t *finh, int error)
}
static inode_t *
-fuse_ino_to_inode (uint64_t ino, inode_table_t *table)
+fuse_ino_to_inode (uint64_t ino, xlator_t *fuse)
{
- inode_t *inode = NULL;
+ inode_t *inode = NULL;
+ xlator_t *active_subvol = NULL;
if (ino == 1) {
- inode = table->root;
+ active_subvol = fuse_active_subvol (fuse);
+ inode = active_subvol->itable->root;
} else {
inode = (inode_t *) (unsigned long) ino;
inode_ref (inode);
@@ -390,13 +427,13 @@ fuse_loc_fill (loc_t *loc, fuse_state_t *state, ino_t ino,
if (name) {
parent = loc->parent;
if (!parent) {
- parent = fuse_ino_to_inode (par, state->itable);
+ parent = fuse_ino_to_inode (par, state->this);
loc->parent = parent;
}
inode = loc->inode;
if (!inode) {
- inode = inode_grep (state->itable, parent, name);
+ inode = inode_grep (parent->table, parent, name);
loc->inode = inode;
}
@@ -411,7 +448,7 @@ fuse_loc_fill (loc_t *loc, fuse_state_t *state, ino_t ino,
} else {
inode = loc->inode;
if (!inode) {
- inode = fuse_ino_to_inode (ino, state->itable);
+ inode = fuse_ino_to_inode (ino, state->this);
loc->inode = inode;
}
@@ -593,13 +630,15 @@ fuse_lookup_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
{
fuse_state_t *state = NULL;
call_frame_t *prev = NULL;
+ inode_table_t *itable = NULL;
state = frame->root->state;
prev = cookie;
if (op_ret == -1 && state->is_revalidate == 1) {
+ itable = state->loc.inode->table;
inode_unref (state->loc.inode);
- state->loc.inode = inode_new (state->itable);
+ state->loc.inode = inode_new (itable);
state->is_revalidate = 2;
STACK_WIND (frame, fuse_lookup_cbk,
@@ -639,7 +678,7 @@ fuse_lookup (xlator_t *this, fuse_in_header_t *finh, void *msg)
"%"PRIu64": LOOKUP %s", finh->unique,
state->loc.path);
- state->loc.inode = inode_new (state->itable);
+ state->loc.inode = inode_new (state->loc.parent->table);
} else {
gf_log ("glusterfs-fuse", GF_LOG_TRACE,
"%"PRIu64": LOOKUP %s(%"PRId64")", finh->unique,
@@ -667,7 +706,7 @@ fuse_forget (xlator_t *this, fuse_in_header_t *finh, void *msg)
return;
}
- fuse_inode = fuse_ino_to_inode (finh->nodeid, this->itable);
+ fuse_inode = fuse_ino_to_inode (finh->nodeid, this);
inode_forget (fuse_inode, ffi->nlookup);
inode_unref (fuse_inode);
@@ -1371,7 +1410,7 @@ fuse_mknod (xlator_t *this, fuse_in_header_t *finh, void *msg)
return;
}
- state->loc.inode = inode_new (state->itable);
+ state->loc.inode = inode_new (state->loc.parent->table);
gf_log ("glusterfs-fuse", GF_LOG_TRACE,
"%"PRIu64": MKNOD %s", finh->unique,
@@ -1404,7 +1443,7 @@ fuse_mkdir (xlator_t *this, fuse_in_header_t *finh, void *msg)
return;
}
- state->loc.inode = inode_new (state->itable);
+ state->loc.inode = inode_new (state->loc.parent->table);
gf_log ("glusterfs-fuse", GF_LOG_TRACE,
"%"PRIu64": MKDIR %s", finh->unique,
@@ -1501,7 +1540,7 @@ fuse_symlink (xlator_t *this, fuse_in_header_t *finh, void *msg)
return;
}
- state->loc.inode = inode_new (state->itable);
+ state->loc.inode = inode_new (state->loc.parent->table);
gf_log ("glusterfs-fuse", GF_LOG_TRACE,
"%"PRIu64": SYMLINK %s -> %s", finh->unique,
@@ -1541,7 +1580,7 @@ fuse_rename_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
}
buf->ia_blksize = this->ctx->page_size;
- inode_rename (state->itable,
+ inode_rename (state->loc.parent->table,
state->loc.parent, state->loc.name,
state->loc2.parent, state->loc2.name,
state->loc.inode, buf);
@@ -1790,7 +1829,7 @@ fuse_create (xlator_t *this, fuse_in_header_t *finh, void *msg)
return;
}
- state->loc.inode = inode_new (state->itable);
+ state->loc.inode = inode_new (state->loc.parent->table);
fd = fd_create (state->loc.inode, finh->pid);
state->fd = fd;
@@ -2530,9 +2569,7 @@ fuse_xattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
fuse_in_header_t *finh = NULL;
data_t *value_data = NULL;
fuse_private_t *priv = NULL;
- struct stat st;
- char *file = NULL;
- int32_t fd = -1;
+ int ret = -1;
int32_t len = 0;
data_pair_t *trav = NULL;
@@ -2550,39 +2587,12 @@ fuse_xattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
/* if callback for getxattr */
value_data = dict_get (dict, state->name);
if (value_data) {
- send_fuse_xattr (this, finh, value_data->data,
- value_data->len, /* Don't return the value for '\0' */
- state->size);
- /* if(op_ret >...)...else if...else */
- } else if (!strcmp (state->name, "user.glusterfs-booster-volfile")) {
- if (!priv->volfile) {
- memset (&st, 0, sizeof (st));
- fd = fileno (this->ctx->specfp);
- if (fstat (fd, &st) != 0) {
- gf_log (this->name,
- GF_LOG_ERROR,
- "fstat on fd (%d) failed (%s)", fd, strerror (errno));
- send_fuse_err (this, finh, ENODATA);
- }
-
- priv->volfile_size = st.st_size;
- file = priv->volfile = GF_CALLOC (1, priv->volfile_size,
- gf_fuse_mt_char);
- len = lseek (fd, 0, SEEK_SET);
- while ((len = read (fd, file, GF_UNIT_KB)) > 0) {
- file += len;
- }
- }
- send_fuse_xattr (this, finh, priv->volfile,
- priv->volfile_size, state->size);
- /* if(op_ret >...)...else if...else */
- } else if (!strcmp (state->name, "user.glusterfs-booster-path")) {
- send_fuse_xattr (this, finh, state->loc.path,
- strlen (state->loc.path) + 1, state->size);
- } else if (!strcmp (state->name, "user.glusterfs-booster-mount")) {
- send_fuse_xattr (this, finh, priv->mount_point,
- strlen (priv->mount_point) + 1, state->size);
+ ret = value_data->len; /* Don't return the value for '\0' */
+ value = value_data->data;
+
+ send_fuse_xattr (this, finh, value, ret, state->size);
+ /* if(ret >...)...else if...else */
} else {
send_fuse_err (this, finh, ENODATA);
} /* if(value_data)...else */
@@ -2608,17 +2618,14 @@ fuse_xattr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
} else {
/* if failure - no need to check if listxattr or getxattr */
if (op_errno != ENODATA) {
- if (op_errno == ENOTSUP)
- {
+ if (op_errno == ENOTSUP) {
GF_LOG_OCCASIONALLY (gf_fuse_xattr_enotsup_log,
"glusterfs-fuse",
GF_LOG_ERROR,
"extended attribute not "
"supported by the backend "
"storage");
- }
- else
- {
+ } else {
gf_log ("glusterfs-fuse", GF_LOG_WARNING,
"%"PRIu64": %s() %s => -1 (%s)",
frame->root->unique,
@@ -2937,7 +2944,7 @@ fuse_init (xlator_t *this, fuse_in_header_t *finh, void *msg)
priv = this->private;
- if (!priv->first_call) {
+ if (priv->init_recvd) {
gf_log ("glusterfs-fuse", GF_LOG_ERROR,
"got INIT after first message");
@@ -2945,6 +2952,8 @@ fuse_init (xlator_t *this, fuse_in_header_t *finh, void *msg)
goto out;
}
+ priv->init_recvd = 1;
+
if (fini->major != FUSE_KERNEL_VERSION) {
gf_log ("glusterfs-fuse", GF_LOG_ERROR,
"unsupported FUSE protocol version %d.%d",
@@ -3014,6 +3023,13 @@ fuse_destroy (xlator_t *this, fuse_in_header_t *finh, void *msg)
}
+
+struct fuse_first_lookup {
+ pthread_mutex_t mutex;
+ pthread_cond_t cond;
+ char fin;
+};
+
int
fuse_first_lookup_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
int32_t op_ret, int32_t op_errno,
@@ -3021,8 +3037,10 @@ fuse_first_lookup_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
struct iatt *postparent)
{
fuse_private_t *priv = NULL;
+ struct fuse_first_lookup *stub = NULL;
priv = this->private;
+ stub = frame->local;
if (op_ret == 0) {
gf_log (this->name, GF_LOG_TRACE,
@@ -3031,13 +3049,14 @@ fuse_first_lookup_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
gf_log (this->name, GF_LOG_DEBUG,
"first lookup on root failed.");
}
- STACK_DESTROY (frame->root);
- pthread_mutex_lock (&priv->first_call_mutex);
+
+ pthread_mutex_lock (&stub->mutex);
{
- priv->first_call = 0;
- pthread_cond_broadcast (&priv->first_call_cond);
+ stub->fin = 1;
+ pthread_cond_broadcast (&stub->cond);
}
- pthread_mutex_unlock (&priv->first_call_mutex);
+ pthread_mutex_unlock (&stub->mutex);
+
return 0;
}
@@ -3045,45 +3064,100 @@ fuse_first_lookup_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
int
fuse_first_lookup (xlator_t *this)
{
- fuse_private_t *priv = NULL;
- loc_t loc;
- call_frame_t *frame = NULL;
- xlator_t *xl = NULL;
- dict_t *dict = NULL;
+ fuse_private_t *priv = NULL;
+ loc_t loc = {0, };
+ call_frame_t *frame = NULL;
+ xlator_t *xl = NULL;
+ dict_t *dict = NULL;
+ struct fuse_first_lookup stub;
priv = this->private;
- pthread_cond_init (&priv->first_call_cond, NULL);
- pthread_mutex_init (&priv->first_call_mutex, NULL);
-
loc.path = "/";
loc.name = "";
loc.ino = 1;
- loc.inode = fuse_ino_to_inode (1, this->itable);
+ loc.inode = fuse_ino_to_inode (1, this);
loc.parent = NULL;
dict = dict_new ();
frame = create_frame (this, this->ctx->pool);
frame->root->type = GF_OP_TYPE_FOP;
- xl = this->children->xlator;
+
+ xl = priv->active_subvol;
+
+ pthread_mutex_init (&stub.mutex, NULL);
+ pthread_cond_init (&stub.cond, NULL);
+ stub.fin = 0;
+
+ frame->local = &stub;
STACK_WIND (frame, fuse_first_lookup_cbk, xl, xl->fops->lookup,
&loc, dict);
dict_unref (dict);
- pthread_mutex_lock (&priv->first_call_mutex);
+ pthread_mutex_lock (&stub.mutex);
{
- while (priv->first_call) {
- pthread_cond_wait (&priv->first_call_cond,
- &priv->first_call_mutex);
+ while (!stub.fin) {
+ pthread_cond_wait (&stub.cond, &stub.mutex);
}
}
- pthread_mutex_unlock (&priv->first_call_mutex);
+ pthread_mutex_unlock (&stub.mutex);
+
+ pthread_mutex_destroy (&stub.mutex);
+ pthread_cond_destroy (&stub.cond);
+
+ frame->local = NULL;
+ STACK_DESTROY (frame->root);
return 0;
}
+int
+fuse_graph_sync (xlator_t *this)
+{
+ fuse_private_t *priv = NULL;
+ int need_first_lookup = 0;
+ struct timeval now = {0, };
+ struct timespec timeout = {0, };
+ int ret = 0;
+
+ priv = this->private;
+
+ pthread_mutex_lock (&priv->sync_mutex);
+ {
+ if (!priv->next_graph)
+ goto unlock;
+
+ priv->active_subvol = priv->next_graph->top;
+ priv->next_graph = NULL;
+ need_first_lookup = 1;
+
+ gettimeofday (&now, NULL);
+ timeout.tv_sec = now.tv_sec + MAX_FUSE_PROC_DELAY;
+ timeout.tv_nsec = now.tv_usec * 1000;
+
+ while (!priv->child_up) {
+ ret = pthread_cond_timedwait (&priv->sync_cond,
+ &priv->sync_mutex,
+ &timeout);
+ if (ret != 0) {
+ gf_log (this->name, GF_LOG_DEBUG,
+ "timedwait returned non zero value "
+ "ret: %d errno: %d", ret, errno);
+ break;
+ }
+ }
+ }
+unlock:
+ pthread_mutex_unlock (&priv->sync_mutex);
+
+ if (need_first_lookup)
+ fuse_first_lookup (this);
+
+ return 0;
+}
+
static void *
fuse_thread_proc (void *data)
@@ -3098,10 +3172,6 @@ fuse_thread_proc (void *data)
void *msg = NULL;
const size_t msg0_size = sizeof (*finh) + 128;
fuse_handler_t **fuse_ops = NULL;
- int ret = -1;
-
- struct timeval now;
- struct timespec timeout;
this = data;
priv = this->private;
@@ -3114,28 +3184,10 @@ fuse_thread_proc (void *data)
->page_size;
priv->msg0_len_p = &iov_in[0].iov_len;
- pthread_mutex_lock (&priv->child_up_mutex);
- {
- gettimeofday (&now, NULL);
- timeout.tv_sec = now.tv_sec + MAX_FUSE_PROC_DELAY;
- timeout.tv_nsec = now.tv_usec * 1000;
-
- while (priv->child_up_value) {
-
- ret = pthread_cond_timedwait (&priv->child_up_cond,
- &priv->child_up_mutex,
- &timeout);
- if (ret != 0) {
- gf_log (this->name, GF_LOG_DEBUG,
- " pthread_cond_timedout returned non zero value"
- " ret: %d errno: %d", ret, errno);
- break;
- }
- }
- }
- pthread_mutex_unlock (&priv->child_up_mutex);
-
for (;;) {
+ if (priv->init_recvd)
+ fuse_graph_sync (this);
+
iobuf = iobuf_get (this->ctx->iobuf_pool);
/* Add extra 128 byte to the first iov so that it can
* accomodate "ordinary" non-write requests. It's not
@@ -3161,14 +3213,6 @@ fuse_thread_proc (void *data)
res = readv (priv->fd, iov_in, 2);
- if (priv->first_call) {
- if (priv->first_call > 1) {
- priv->first_call--;
- } else {
- fuse_first_lookup (this);
- }
- }
-
if (res == -1) {
if (errno == ENODEV || errno == EBADF) {
gf_log ("glusterfs-fuse", GF_LOG_NORMAL,
@@ -3187,11 +3231,13 @@ fuse_thread_proc (void *data)
goto cont_err;
}
if (res < sizeof (finh)) {
- gf_log ("glusterfs-fuse", GF_LOG_WARNING, "short read on /dev/fuse");
+ gf_log ("glusterfs-fuse", GF_LOG_WARNING,
+ "short read on /dev/fuse");
break;
}
finh = (fuse_in_header_t *)iov_in[0].iov_base;
+
if (res != finh->len
#ifdef GF_DARWIN_HOST_OS
/* work around fuse4bsd/MacFUSE msg size miscalculation bug,
@@ -3203,7 +3249,8 @@ fuse_thread_proc (void *data)
res == finh->len + ((struct fuse_write_in *)(finh + 1))->size)
#endif
) {
- gf_log ("glusterfs-fuse", GF_LOG_WARNING, "inconsistent read on /dev/fuse");
+ gf_log ("glusterfs-fuse", GF_LOG_WARNING,
+ "inconsistent read on /dev/fuse");
break;
}
@@ -3313,8 +3360,8 @@ fuse_priv_dump (xlator_t *this)
private->entry_timeout);
gf_proc_dump_write("xlator.mount.fuse.attribute_timeout", "%lf",
private->attribute_timeout);
- gf_proc_dump_write("xlator.mount.fuse.first_call", "%d",
- (int)private->first_call);
+ gf_proc_dump_write("xlator.mount.fuse.init_recvd", "%d",
+ (int)private->init_recvd);
gf_proc_dump_write("xlator.mount.fuse.strict_volfile_check", "%d",
(int)private->strict_volfile_check);
@@ -3322,55 +3369,87 @@ fuse_priv_dump (xlator_t *this)
}
-int32_t
+int
+fuse_graph_setup (xlator_t *this, glusterfs_graph_t *graph)
+{
+ inode_table_t *itable = NULL;
+ int ret = 0;
+ fuse_private_t *priv = NULL;
+
+ priv = this->private;
+
+ itable = inode_table_new (0, graph->top);
+ if (!itable)
+ return -1;
+
+ ((xlator_t *)graph->top)->itable = itable;
+
+ pthread_mutex_lock (&priv->sync_mutex);
+ {
+ priv->next_graph = graph;
+ priv->child_up = 0;
+
+ pthread_cond_signal (&priv->sync_cond);
+ }
+ pthread_mutex_unlock (&priv->sync_mutex);
+
+ return ret;
+}
+
+
+int
notify (xlator_t *this, int32_t event, void *data, ...)
{
- int32_t ret = 0;
- fuse_private_t *private = NULL;
+ int32_t ret = 0;
+ fuse_private_t *private = NULL;
+ glusterfs_graph_t *graph = NULL;
private = this->private;
switch (event)
{
- case GF_EVENT_CHILD_UP:
- case GF_EVENT_CHILD_CONNECTING:
- {
- pthread_mutex_lock (&private->child_up_mutex);
- {
- private->child_up_value = 0;
- pthread_cond_broadcast (&private->child_up_cond);
- }
- pthread_mutex_unlock (&private->child_up_mutex);
+ case GF_EVENT_GRAPH_NEW:
+ graph = data;
- break;
- }
+ ret = fuse_graph_setup (this, graph);
+ if (ret)
+ break;
- case GF_EVENT_PARENT_UP:
- {
- if (!private->fuse_thread_started)
- {
+ if (!private->fuse_thread_started) {
private->fuse_thread_started = 1;
ret = pthread_create (&private->fuse_thread, NULL,
fuse_thread_proc, this);
-
if (ret != 0) {
- gf_log ("glusterfs-fuse", GF_LOG_DEBUG,
+ gf_log (this->name, GF_LOG_DEBUG,
"pthread_create() failed (%s)",
strerror (errno));
-
- /* If fuse thread is not started, that means,
- its hung, we can't use this process. */
- raise (SIGTERM);
+ break;
}
}
- default_notify (this, GF_EVENT_PARENT_UP, data);
+ break;
+
+// case GF_EVENT_CHILD_CONNECTING:
+
+ case GF_EVENT_CHILD_UP:
+ {
+ /* set priv->active_subvol */
+ /* set priv->first_lookup = 1 */
+
+ pthread_mutex_lock (&private->sync_mutex);
+ {
+ private->child_up = 1;
+ pthread_cond_broadcast (&private->sync_cond);
+ }
+ pthread_mutex_unlock (&private->sync_mutex);
+
break;
}
+
case GF_EVENT_VOLFILE_MODIFIED:
{
- gf_log ("fuse", GF_LOG_CRITICAL,
+ gf_log (this->name, GF_LOG_CRITICAL,
"Remote volume file changed, try re-mounting.");
if (private->strict_volfile_check) {
//fuse_session_remove_chan (private->ch);
@@ -3385,7 +3464,8 @@ notify (xlator_t *this, int32_t event, void *data, ...)
default:
break;
}
- return 0;
+
+ return ret;
}
int32_t
@@ -3603,17 +3683,10 @@ init (xlator_t *this_xl)
priv->fuse_dump_fd = ret;
}
- fsname = this_xl->ctx->cmd_args.volume_file;
+ fsname = this_xl->ctx->cmd_args.volfile;
fsname = (fsname ? fsname : this_xl->ctx->cmd_args.volfile_server);
fsname = (fsname ? fsname : "glusterfs");
- this_xl->itable = inode_table_new (0, this_xl);
- if (!this_xl->itable) {
- gf_log ("glusterfs-fuse", GF_LOG_ERROR,
- "Out of memory");
-
- goto cleanup_exit;
- }
priv->fd = gf_fuse_mount (priv->mount_point, fsname,
"allow_other,default_permissions,"
@@ -3621,14 +3694,10 @@ init (xlator_t *this_xl)
if (priv->fd == -1)
goto cleanup_exit;
- this_xl->ctx->top = this_xl;
-
- priv->first_call = 2;
-
pthread_mutex_init (&priv->fuse_dump_mutex, NULL);
- pthread_cond_init (&priv->child_up_cond, NULL);
- pthread_mutex_init (&priv->child_up_mutex, NULL);
- priv->child_up_value = 1;
+ pthread_cond_init (&priv->sync_cond, NULL);
+ pthread_mutex_init (&priv->sync_mutex, NULL);
+ priv->child_up = 0;
for (i = 0; i < FUSE_OP_HIGH; i++) {
if (!fuse_std_ops[i])
generated by cgit (git 2.34.1) at 2024-11-15 05:07:29 +0000