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fuse-bridge.c
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fuse-bridge.c
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/*
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.
*/
#include <sys/wait.h>
#include "fuse-bridge.h"
#include "glusterfs.h"
#include "byte-order.h"
#include "compat-errno.h"
#include "glusterfs-acl.h"
#include "syscall.h"
#ifdef __NetBSD__
#undef open /* in perfuse.h, pulled from mount-gluster-compat.h */
#endif
static int gf_fuse_xattr_enotsup_log;
void fini (xlator_t *this_xl);
static void fuse_invalidate_inode(xlator_t *this, uint64_t fuse_ino);
/*
* Send an invalidate notification up to fuse to purge the file from local
* page cache.
*/
static int32_t
fuse_invalidate(xlator_t *this, inode_t *inode)
{
fuse_private_t *priv = this->private;
uint64_t nodeid;
/*
* NOTE: We only invalidate at the moment if fopen_keep_cache is
* enabled because otherwise this is a departure from default
* behavior. Specifically, the performance/write-behind xlator
* causes unconditional invalidations on write requests.
*/
if (!priv->fopen_keep_cache)
return 0;
nodeid = inode_to_fuse_nodeid(inode);
gf_log(this->name, GF_LOG_DEBUG, "Invalidate inode id %"GF_PRI_INODE"." , nodeid);
fuse_log_eh (this, "Sending invalidate inode id: %"GF_PRI_INODE" gfid: %s", nodeid,
uuid_utoa (inode->gfid));
fuse_invalidate_inode(this, nodeid);
return 0;
}
static int32_t
fuse_forget_cbk (xlator_t *this, inode_t *inode)
{
//Nothing to free in inode ctx, hence return.
return 0;
}
fuse_fd_ctx_t *
__fuse_fd_ctx_check_n_create (xlator_t *this, fd_t *fd)
{
uint64_t val = 0;
int32_t ret = 0;
fuse_fd_ctx_t *fd_ctx = NULL;
ret = __fd_ctx_get (fd, this, &val);
fd_ctx = (fuse_fd_ctx_t *)(unsigned long) val;
if (fd_ctx == NULL) {
fd_ctx = GF_CALLOC (1, sizeof (*fd_ctx),
gf_fuse_mt_fd_ctx_t);
if (!fd_ctx) {
goto out;
}
ret = __fd_ctx_set (fd, this,
(uint64_t)(unsigned long)fd_ctx);
if (ret < 0) {
gf_log ("glusterfs-fuse", GF_LOG_DEBUG,
"fd-ctx-set failed");
GF_FREE (fd_ctx);
fd_ctx = NULL;
}
}
out:
return fd_ctx;
}
fuse_fd_ctx_t *
fuse_fd_ctx_check_n_create (xlator_t *this, fd_t *fd)
{
fuse_fd_ctx_t *fd_ctx = NULL;
if ((fd == NULL) || (this == NULL)) {
goto out;
}
LOCK (&fd->lock);
{
fd_ctx = __fuse_fd_ctx_check_n_create (this, fd);
}
UNLOCK (&fd->lock);
out:
return fd_ctx;
}
static void
fuse_fd_ctx_destroy (xlator_t *this, fd_t *fd)
{
fd_t *activefd = NULL;
uint64_t val = 0;
int ret = 0;
fuse_fd_ctx_t *fdctx = NULL;
ret = fd_ctx_del (fd, this, &val);
if (!ret) {
fdctx = (fuse_fd_ctx_t *)(unsigned long)val;
if (fdctx) {
activefd = fdctx->activefd;
if (activefd) {
fd_unref (activefd);
}
GF_FREE (fdctx);
}
}
}
fuse_fd_ctx_t *
fuse_fd_ctx_get (xlator_t *this, fd_t *fd)
{
fuse_fd_ctx_t *fdctx = NULL;
uint64_t value = 0;
int ret = 0;
ret = fd_ctx_get (fd, this, &value);
if (ret < 0) {
goto out;
}
fdctx = (fuse_fd_ctx_t *) (unsigned long)value;
out:
return fdctx;
}
struct fusedump_timespec {
uint32_t len;
uint64_t sec;
uint32_t nsec;
} __attribute__((packed));
struct fusedump_signature {
uint32_t len;
char sig[8];
} __attribute__((packed));
static void
fusedump_gettime (struct fusedump_timespec *fts)
{
struct timespec ts = {0,};
clock_gettime (CLOCK_REALTIME, &ts);
fts->sec = ts.tv_sec;
fts->nsec = ts.tv_nsec;
}
static void
fusedump_setup_meta (struct iovec *iovs, char *dir,
uint32_t *fusedump_item_count,
struct fusedump_timespec *fts,
struct fusedump_signature *fsig)
{
char glustersig[8] = {'G', 'L', 'U', 'S', 'T', 'E', 'R', 0xF5};
*fusedump_item_count = 3;
fts->len = sizeof (*fts);
fusedump_gettime (fts);
fsig->len = sizeof (*fsig);
memcpy (fsig->sig, glustersig, 8);
iovs[0] = (struct iovec){ dir, sizeof (*dir) };
iovs[1] = (struct iovec){ fusedump_item_count,
sizeof (*fusedump_item_count) };
iovs[2] = (struct iovec){ fts, fts->len };
iovs[3] = (struct iovec){ fsig, fsig->len };
}
static int
check_and_dump_fuse_W (fuse_private_t *priv, struct iovec *iov_out, int count,
ssize_t res)
{
char w = 'W';
struct iovec diov[4] = {{0,},};
uint32_t fusedump_item_count = 3;
struct fusedump_timespec fts = {0,};
struct fusedump_signature fsig = {0,};
struct fuse_out_header *fouh = NULL;
if (res == -1) {
gf_log ("glusterfs-fuse", GF_LOG_ERROR,
"writing to fuse device failed: %s",
strerror (errno));
return errno;
}
fouh = iov_out[0].iov_base;
if (res != fouh->len) {
gf_log ("glusterfs-fuse", GF_LOG_ERROR,
"inconsistent write to fuse device: "
"written %zd, expectd %d",
res, fouh->len);
return EINVAL;
}
if (priv->fuse_dump_fd == -1)
return 0;
fusedump_setup_meta (diov, &w, &fusedump_item_count,
&fts, &fsig);
pthread_mutex_lock (&priv->fuse_dump_mutex);
res = sys_writev (priv->fuse_dump_fd, diov,
sizeof (diov)/sizeof (diov[0]));
if (res != -1)
res = sys_writev (priv->fuse_dump_fd, iov_out, count);
pthread_mutex_unlock (&priv->fuse_dump_mutex);
if (res == -1)
gf_log ("glusterfs-fuse", GF_LOG_ERROR,
"failed to dump fuse message (W): %s",
strerror (errno));
/*
* Return value reflects check on write to /dev/fuse,
* so ignore issues with dumping.
*/
return 0;
}
/*
* iov_out should contain a fuse_out_header at zeroth position.
* The error value of this header is sent to kernel.
*/
static int
send_fuse_iov (xlator_t *this, fuse_in_header_t *finh, struct iovec *iov_out,
int count)
{
fuse_private_t *priv = NULL;
struct fuse_out_header *fouh = NULL;
int res, i;
if (!this || !finh || !iov_out) {
gf_log ("send_fuse_iov", GF_LOG_ERROR,"Invalid arguments");
return EINVAL;
}
priv = this->private;
fouh = iov_out[0].iov_base;
iov_out[0].iov_len = sizeof (*fouh);
fouh->len = 0;
for (i = 0; i < count; i++)
fouh->len += iov_out[i].iov_len;
fouh->unique = finh->unique;
res = sys_writev (priv->fd, iov_out, count);
gf_log ("glusterfs-fuse", GF_LOG_TRACE, "writev() result %d/%d %s",
res, fouh->len, res == -1 ? strerror (errno) : "");
return check_and_dump_fuse_W (priv, iov_out, count, res);
}
static int
send_fuse_data (xlator_t *this, fuse_in_header_t *finh, void *data, size_t size)
{
struct fuse_out_header fouh = {0, };
struct iovec iov_out[2];
int ret = 0;
fouh.error = 0;
iov_out[0].iov_base = &fouh;
iov_out[1].iov_base = data;
iov_out[1].iov_len = size;
ret = send_fuse_iov (this, finh, iov_out, 2);
if (ret != 0)
gf_log ("glusterfs-fuse", GF_LOG_ERROR, "send_fuse_iov() "
"failed: %s", strerror (ret));
return ret;
}
#define send_fuse_obj(this, finh, obj) \
send_fuse_data (this, finh, obj, sizeof (*(obj)))
#if FUSE_KERNEL_MINOR_VERSION >= 11
static void
fuse_invalidate_entry (xlator_t *this, uint64_t fuse_ino)
{
struct fuse_out_header *fouh = NULL;
struct fuse_notify_inval_entry_out *fnieo = NULL;
fuse_private_t *priv = NULL;
dentry_t *dentry = NULL;
inode_t *inode = NULL;
size_t nlen = 0;
fuse_invalidate_node_t *node = NULL;
priv = this->private;
if (!priv->reverse_fuse_thread_started)
return;
inode = fuse_ino_to_inode(fuse_ino, this);
if (inode == NULL) {
return;
}
list_for_each_entry (dentry, &inode->dentry_list, inode_list) {
node = GF_CALLOC (1, sizeof (*node),
gf_fuse_mt_invalidate_node_t);
if (node == NULL)
break;
INIT_LIST_HEAD (&node->next);
fouh = (struct fuse_out_header *)node->inval_buf;
fnieo = (struct fuse_notify_inval_entry_out *)(fouh + 1);
fouh->unique = 0;
fouh->error = FUSE_NOTIFY_INVAL_ENTRY;
nlen = strlen (dentry->name);
fouh->len = sizeof (*fouh) + sizeof (*fnieo) + nlen + 1;
fnieo->parent = inode_to_fuse_nodeid (dentry->parent);
fnieo->namelen = nlen;
strcpy (node->inval_buf + sizeof (*fouh) + sizeof (*fnieo),
dentry->name);
pthread_mutex_lock (&priv->invalidate_mutex);
{
list_add_tail (&node->next, &priv->invalidate_list);
pthread_cond_signal (&priv->invalidate_cond);
}
pthread_mutex_unlock (&priv->invalidate_mutex);
gf_log ("glusterfs-fuse", GF_LOG_TRACE, "INVALIDATE entry: "
"%"PRIu64"/%s", fnieo->parent, dentry->name);
if (dentry->parent) {
fuse_log_eh (this, "Invalidated entry %s (parent: %s)",
dentry->name,
uuid_utoa (dentry->parent->gfid));
} else {
fuse_log_eh (this, "Invalidated entry %s(nodeid: %" PRIu64 ")",
dentry->name, fnieo->parent);
}
}
if (inode)
inode_unref (inode);
}
#endif
/*
* Send an inval inode notification to fuse. This causes an invalidation of the
* entire page cache mapping on the inode.
*/
static void
fuse_invalidate_inode(xlator_t *this, uint64_t fuse_ino)
{
#if FUSE_KERNEL_MINOR_VERSION >= 11
struct fuse_out_header *fouh = NULL;
struct fuse_notify_inval_inode_out *fniio = NULL;
fuse_private_t *priv = NULL;
fuse_invalidate_node_t *node = NULL;
inode_t *inode = NULL;
priv = this->private;
if (!priv->reverse_fuse_thread_started)
return;
node = GF_CALLOC (1, sizeof (*node), gf_fuse_mt_invalidate_node_t);
if (node == NULL)
return;
INIT_LIST_HEAD (&node->next);
fouh = (struct fuse_out_header *) node->inval_buf;
fniio = (struct fuse_notify_inval_inode_out *) (fouh + 1);
fouh->unique = 0;
fouh->error = FUSE_NOTIFY_INVAL_INODE;
fouh->len = sizeof(struct fuse_out_header) +
sizeof(struct fuse_notify_inval_inode_out);
/* inval the entire mapping until we learn how to be more granular */
fniio->ino = fuse_ino;
fniio->off = 0;
fniio->len = -1;
inode = fuse_ino_to_inode (fuse_ino, this);
pthread_mutex_lock (&priv->invalidate_mutex);
{
list_add_tail (&node->next, &priv->invalidate_list);
pthread_cond_signal (&priv->invalidate_cond);
}
pthread_mutex_unlock (&priv->invalidate_mutex);
gf_log ("glusterfs-fuse", GF_LOG_TRACE, "INVALIDATE inode: %" PRIu64,
fuse_ino);
if (inode) {
fuse_log_eh (this, "Invalidated inode %" PRIu64 " (gfid: %s)",
fuse_ino, uuid_utoa (inode->gfid));
} else {
fuse_log_eh (this, "Invalidated inode %" PRIu64, fuse_ino);
}
if (inode)
inode_unref (inode);
#else
gf_log ("glusterfs-fuse", GF_LOG_WARNING,
"fuse_invalidate_inode not implemented on OS X due to missing FUSE notification");
#endif
}
int
send_fuse_err (xlator_t *this, fuse_in_header_t *finh, int error)
{
struct fuse_out_header fouh = {0, };
struct iovec iov_out;
inode_t *inode = NULL;
fouh.error = -error;
iov_out.iov_base = &fouh;
inode = fuse_ino_to_inode (finh->nodeid, this);
// filter out ENOENT
if (error != ENOENT) {
if (inode) {
fuse_log_eh (this,"Sending %s for operation %d on "
"inode %s", strerror (error), finh->opcode,
uuid_utoa (inode->gfid));
} else {
fuse_log_eh (this, "Sending %s for operation %d on "
"inode %" GF_PRI_INODE, strerror (error),
finh->opcode, finh->nodeid);
}
}
if (inode)
inode_unref (inode);
return send_fuse_iov (this, finh, &iov_out, 1);
}
static int
fuse_entry_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
int32_t op_ret, int32_t op_errno,
inode_t *inode, struct iatt *buf, dict_t *xdata)
{
fuse_state_t *state = NULL;
fuse_in_header_t *finh = NULL;
struct fuse_entry_out feo = {0, };
fuse_private_t *priv = NULL;
inode_t *linked_inode = NULL;
uint64_t ctx_value = LOOKUP_NOT_NEEDED;
priv = this->private;
state = frame->root->state;
finh = state->finh;
if (op_ret == 0) {
if (__is_root_gfid (state->loc.inode->gfid))
buf->ia_ino = 1;
if (gf_uuid_is_null (buf->ia_gfid)) {
/* With a NULL gfid inode linking is
not possible. Let's not pretend this
call was a "success".
*/
gf_log ("glusterfs-fuse", GF_LOG_WARNING,
"Received NULL gfid for %s. Forcing EIO",
state->loc.path);
op_ret = -1;
op_errno = EIO;
}
}
/* log into the event-history after the null uuid check is done, since
* the op_ret and op_errno are being changed if the gfid is NULL.
*/
fuse_log_eh (this, "op_ret: %d op_errno: %d "
"%"PRIu64": %s() %s => %s", op_ret, op_errno,
frame->root->unique, gf_fop_list[frame->root->op],
state->loc.path, (op_ret == 0)?
uuid_utoa(buf->ia_gfid):uuid_utoa(state->loc.gfid));
if (op_ret == 0) {
gf_log ("glusterfs-fuse", GF_LOG_TRACE,
"%"PRIu64": %s() %s => %"PRIu64,
frame->root->unique, gf_fop_list[frame->root->op],
state->loc.path, buf->ia_ino);
buf->ia_blksize = this->ctx->page_size;
gf_fuse_stat2attr (buf, &feo.attr, priv->enable_ino32);
if (!buf->ia_ino) {
gf_log ("glusterfs-fuse", GF_LOG_WARNING,
"%"PRIu64": %s() %s returning inode 0",
frame->root->unique,
gf_fop_list[frame->root->op], state->loc.path);
}
linked_inode = inode_link (inode, state->loc.parent,
state->loc.name, buf);
if (linked_inode == inode) {
inode_ctx_set (linked_inode, this, &ctx_value);
}
inode_lookup (linked_inode);
feo.nodeid = inode_to_fuse_nodeid (linked_inode);
inode_unref (linked_inode);
feo.entry_valid =
calc_timeout_sec (priv->entry_timeout);
feo.entry_valid_nsec =
calc_timeout_nsec (priv->entry_timeout);
feo.attr_valid =
calc_timeout_sec (priv->attribute_timeout);
feo.attr_valid_nsec =
calc_timeout_nsec (priv->attribute_timeout);
#if FUSE_KERNEL_MINOR_VERSION >= 9
priv->proto_minor >= 9 ?
send_fuse_obj (this, finh, &feo) :
send_fuse_data (this, finh, &feo,
FUSE_COMPAT_ENTRY_OUT_SIZE);
#else
send_fuse_obj (this, finh, &feo);
#endif
} else {
gf_log ("glusterfs-fuse",
(op_errno == ENOENT ? GF_LOG_TRACE : GF_LOG_WARNING),
"%"PRIu64": %s() %s => -1 (%s)", frame->root->unique,
gf_fop_list[frame->root->op], state->loc.path,
strerror (op_errno));
if ((op_errno == ENOENT) && (priv->negative_timeout != 0)) {
feo.entry_valid =
calc_timeout_sec (priv->negative_timeout);
feo.entry_valid_nsec =
calc_timeout_nsec (priv->negative_timeout);
send_fuse_obj (this, finh, &feo);
} else {
send_fuse_err (this, state->finh, op_errno);
}
}
free_fuse_state (state);
STACK_DESTROY (frame->root);
return 0;
}
static int
fuse_newentry_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
int32_t op_ret, int32_t op_errno,
inode_t *inode, struct iatt *buf, struct iatt *preparent,
struct iatt *postparent, dict_t *xdata)
{
fuse_entry_cbk (frame, cookie, this, op_ret, op_errno, inode, buf,
xdata);
return 0;
}
static int
fuse_lookup_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
int32_t op_ret, int32_t op_errno,
inode_t *inode, struct iatt *stat, dict_t *dict,
struct iatt *postparent)
{
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->itable;
/*
* A stale mapping might exist for a dentry/inode that has been
* removed from another client.
*/
if (op_errno == ENOENT)
inode_unlink(state->loc.inode, state->loc.parent,
state->loc.name);
inode_unref (state->loc.inode);
state->loc.inode = inode_new (itable);
state->is_revalidate = 2;
if (gf_uuid_is_null (state->gfid))
gf_uuid_generate (state->gfid);
fuse_gfid_set (state);
STACK_WIND (frame, fuse_lookup_cbk,
prev->this, prev->this->fops->lookup,
&state->loc, state->xdata);
return 0;
}
fuse_entry_cbk (frame, cookie, this, op_ret, op_errno, inode, stat,
dict);
return 0;
}
void
fuse_fop_resume (fuse_state_t *state)
{
fuse_resume_fn_t fn = NULL;
/*
* Fail fd resolution failures right away.
*/
if (state->resolve.fd && state->resolve.op_ret < 0) {
send_fuse_err (state->this, state->finh,
state->resolve.op_errno);
free_fuse_state (state);
return;
}
fn = state->resume_fn;
fn (state);
}
void
fuse_lookup_resume (fuse_state_t *state)
{
if (!state->loc.parent && !state->loc.inode) {
gf_log ("fuse", GF_LOG_ERROR, "failed to resolve path %s",
state->loc.path);
send_fuse_err (state->this, state->finh,
state->resolve.op_errno);
free_fuse_state (state);
return;
}
/* parent was resolved, entry could not, may be a missing gfid?
* Hence try to do a regular lookup
*/
if ((state->resolve.op_ret == -1)
&& (state->resolve.op_errno == ENODATA)) {
state->resolve.op_ret = 0;
}
if (state->loc.inode) {
gf_log ("glusterfs-fuse", GF_LOG_TRACE,
"%"PRIu64": LOOKUP %s(%s)", state->finh->unique,
state->loc.path, uuid_utoa (state->loc.inode->gfid));
state->is_revalidate = 1;
} else {
gf_log ("glusterfs-fuse", GF_LOG_TRACE,
"%"PRIu64": LOOKUP %s", state->finh->unique,
state->loc.path);
state->loc.inode = inode_new (state->loc.parent->table);
if (gf_uuid_is_null (state->gfid))
gf_uuid_generate (state->gfid);
fuse_gfid_set (state);
}
FUSE_FOP (state, fuse_lookup_cbk, GF_FOP_LOOKUP,
lookup, &state->loc, state->xdata);
}
static void
fuse_lookup (xlator_t *this, fuse_in_header_t *finh, void *msg)
{
char *name = msg;
fuse_state_t *state = NULL;
GET_STATE (this, finh, state);
(void) fuse_resolve_entry_init (state, &state->resolve,
finh->nodeid, name);
fuse_resolve_and_resume (state, fuse_lookup_resume);
return;
}
static void
do_forget(xlator_t *this, uint64_t unique, uint64_t nodeid, uint64_t nlookup)
{
inode_t *fuse_inode = fuse_ino_to_inode(nodeid, this);
fuse_log_eh(this, "%"PRIu64": FORGET %"PRIu64"/%"PRIu64" gfid: (%s)",
unique, nodeid, nlookup, uuid_utoa(fuse_inode->gfid));
inode_forget(fuse_inode, nlookup);
inode_unref(fuse_inode);
}
static void
fuse_forget (xlator_t *this, fuse_in_header_t *finh, void *msg)
{
struct fuse_forget_in *ffi = msg;
if (finh->nodeid == 1) {
GF_FREE (finh);
return;
}
gf_log ("glusterfs-fuse", GF_LOG_TRACE,
"%"PRIu64": FORGET %"PRIu64"/%"PRIu64,
finh->unique, finh->nodeid, ffi->nlookup);
do_forget(this, finh->unique, finh->nodeid, ffi->nlookup);
GF_FREE (finh);
}
#if FUSE_KERNEL_MINOR_VERSION >= 16
static void
fuse_batch_forget(xlator_t *this, fuse_in_header_t *finh, void *msg)
{
struct fuse_batch_forget_in *fbfi = msg;
struct fuse_forget_one *ffo = (struct fuse_forget_one *) (fbfi + 1);
int i;
gf_log("glusterfs-fuse", GF_LOG_TRACE,
"%"PRIu64": BATCH_FORGET %"PRIu64"/%"PRIu32,
finh->unique, finh->nodeid, fbfi->count);
for (i = 0; i < fbfi->count; i++) {
if (ffo[i].nodeid == 1)
continue;
do_forget(this, finh->unique, ffo[i].nodeid, ffo[i].nlookup);
}
GF_FREE(finh);
}
#endif
static int
fuse_truncate_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
int32_t op_ret, int32_t op_errno, struct iatt *prebuf,
struct iatt *postbuf, dict_t *xdata)
{
fuse_state_t *state;
fuse_in_header_t *finh;
fuse_private_t *priv = NULL;
struct fuse_attr_out fao;
priv = this->private;
state = frame->root->state;
finh = state->finh;
fuse_log_eh_fop(this, state, frame, op_ret, op_errno);
if (op_ret == 0) {
gf_log ("glusterfs-fuse", GF_LOG_TRACE,
"%"PRIu64": %s() %s => %"PRIu64, frame->root->unique,
gf_fop_list[frame->root->op],
state->loc.path ? state->loc.path : "ERR",
prebuf->ia_ino);
postbuf->ia_blksize = this->ctx->page_size;
gf_fuse_stat2attr (postbuf, &fao.attr, priv->enable_ino32);
fao.attr_valid = calc_timeout_sec (priv->attribute_timeout);
fao.attr_valid_nsec =
calc_timeout_nsec (priv->attribute_timeout);
#if FUSE_KERNEL_MINOR_VERSION >= 9
priv->proto_minor >= 9 ?
send_fuse_obj (this, finh, &fao) :
send_fuse_data (this, finh, &fao,
FUSE_COMPAT_ATTR_OUT_SIZE);
#else
send_fuse_obj (this, finh, &fao);
#endif
} else {
gf_log ("glusterfs-fuse", GF_LOG_WARNING,
"%"PRIu64": %s() %s => -1 (%s)", frame->root->unique,
gf_fop_list[frame->root->op],
state->loc.path ? state->loc.path : "ERR",
strerror (op_errno));
send_fuse_err (this, finh, op_errno);
}
free_fuse_state (state);
STACK_DESTROY (frame->root);
return 0;
}
static int
fuse_root_lookup_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
int32_t op_ret, int32_t op_errno,
inode_t *inode, struct iatt *stat, dict_t *dict,
struct iatt *postparent);
static int
fuse_attr_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
int32_t op_ret, int32_t op_errno, struct iatt *buf, dict_t *xdata)
{
int32_t ret = 0;
fuse_state_t *state;
fuse_in_header_t *finh;
fuse_private_t *priv = NULL;
struct fuse_attr_out fao;
priv = this->private;
state = frame->root->state;
finh = state->finh;
fuse_log_eh (this, "op_ret: %d, op_errno: %d, %"PRIu64": %s() %s => "
"gfid: %s", op_ret, op_errno, frame->root->unique,
gf_fop_list[frame->root->op], state->loc.path,
state->loc.inode ? uuid_utoa (state->loc.inode->gfid) : "");
if (op_ret == 0) {
gf_log ("glusterfs-fuse", GF_LOG_TRACE,
"%"PRIu64": %s() %s => %"PRIu64, frame->root->unique,
gf_fop_list[frame->root->op],
state->loc.path ? state->loc.path : "ERR",
buf->ia_ino);
buf->ia_blksize = this->ctx->page_size;
gf_fuse_stat2attr (buf, &fao.attr, priv->enable_ino32);
fao.attr_valid = calc_timeout_sec (priv->attribute_timeout);
fao.attr_valid_nsec =
calc_timeout_nsec (priv->attribute_timeout);
#if FUSE_KERNEL_MINOR_VERSION >= 9
priv->proto_minor >= 9 ?
send_fuse_obj (this, finh, &fao) :
send_fuse_data (this, finh, &fao,
FUSE_COMPAT_ATTR_OUT_SIZE);
#else
send_fuse_obj (this, finh, &fao);
#endif
} else {
/* This is moved here from fuse_getattr(). It makes sense as
in few cases, like the self-heal processes, some
translators expect a lookup() to come on root inode
(inode number 1). This will make sure we don't fail in any
case, but the positive path will get better performance,
by following common path for all the cases */
if ((finh->nodeid == 1) && (state->gfid[15] != 1)) {
/* The 'state->gfid[15]' check is added to prevent the
infinite recursions */
state->gfid[15] = 1;
ret = fuse_loc_fill (&state->loc, state, finh->nodeid,
0, NULL);
if (ret < 0) {
gf_log ("glusterfs-fuse", GF_LOG_WARNING,
"%"PRIu64": loc_fill() on / failed",
finh->unique);
send_fuse_err (this, finh, ENOENT);
free_fuse_state (state);
return 0;
}
fuse_gfid_set (state);
FUSE_FOP (state, fuse_root_lookup_cbk, GF_FOP_LOOKUP,
lookup, &state->loc, state->xdata);
return 0;
}
gf_log ("glusterfs-fuse", GF_LOG_WARNING, "%"PRIu64": %s() "
"%s => -1 (%s)", frame->root->unique,
gf_fop_list[frame->root->op],
state->loc.path ? state->loc.path : "ERR",
strerror (op_errno));
send_fuse_err (this, finh, op_errno);
}
free_fuse_state (state);
STACK_DESTROY (frame->root);
return 0;
}
static int
fuse_root_lookup_cbk (call_frame_t *frame, void *cookie, xlator_t *this,
int32_t op_ret, int32_t op_errno,
inode_t *inode, struct iatt *stat, dict_t *dict,
struct iatt *postparent)
{
fuse_attr_cbk (frame, cookie, this, op_ret, op_errno, stat, dict);
return 0;
}
void
fuse_getattr_resume (fuse_state_t *state)
{
if (!state->loc.inode) {
gf_log ("glusterfs-fuse", GF_LOG_ERROR,
"%"PRIu64": GETATTR %"PRIu64" (%s) resolution failed",
state->finh->unique, state->finh->nodeid,
uuid_utoa (state->resolve.gfid));
send_fuse_err (state->this, state->finh,
state->resolve.op_errno);
free_fuse_state (state);
return;
}
if (!IA_ISDIR (state->loc.inode->ia_type)) {
state->fd = fd_lookup (state->loc.inode, 0);
}
if (!state->fd) {
gf_log ("glusterfs-fuse", GF_LOG_TRACE,
"%"PRIu64": GETATTR %"PRIu64" (%s)",
state->finh->unique, state->finh->nodeid,
state->loc.path);
FUSE_FOP (state, fuse_attr_cbk, GF_FOP_STAT,
stat, &state->loc, state->xdata);
} else {
gf_log ("glusterfs-fuse", GF_LOG_TRACE,
"%"PRIu64": FGETATTR %"PRIu64" (%s/%p)",
state->finh->unique, state->finh->nodeid,
state->loc.path, state->fd);
FUSE_FOP (state, fuse_attr_cbk, GF_FOP_FSTAT,
fstat, state->fd, state->xdata);
}
}
static void
fuse_getattr (xlator_t *this, fuse_in_header_t *finh, void *msg)
{
fuse_state_t *state;
GET_STATE (this, finh, state);
fuse_resolve_inode_init (state, &state->resolve, state->finh->nodeid);
fuse_resolve_and_resume (state, fuse_getattr_resume);
}
static int32_t
fuse_fd_inherit_directio (xlator_t *this, fd_t *fd, struct fuse_open_out *foo)
{
int32_t ret = 0;
fuse_fd_ctx_t *fdctx = NULL, *tmp_fdctx = NULL;
fd_t *tmp_fd = NULL;
GF_VALIDATE_OR_GOTO_WITH_ERROR ("glusterfs-fuse", this, out, ret,
-EINVAL);
GF_VALIDATE_OR_GOTO_WITH_ERROR ("glusterfs-fuse", fd, out, ret,
-EINVAL);
GF_VALIDATE_OR_GOTO_WITH_ERROR ("glusterfs-fuse", foo, out, ret,
-EINVAL);
fdctx = fuse_fd_ctx_get (this, fd);
if (!fdctx) {
ret = -ENOMEM;
goto out;
}
tmp_fd = fd_lookup (fd->inode, 0);
if (tmp_fd) {
tmp_fdctx = fuse_fd_ctx_get (this, tmp_fd);
if (tmp_fdctx) {
foo->open_flags &= ~FOPEN_DIRECT_IO;
foo->open_flags |= (tmp_fdctx->open_flags
& FOPEN_DIRECT_IO);
}
}
fdctx->open_flags |= (foo->open_flags & FOPEN_DIRECT_IO);
if (tmp_fd != NULL) {