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Commit fcee216b authored by Max Reitz's avatar Max Reitz Committed by Miklos Szeredi
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fuse: split fuse_mount off of fuse_conn 

We want to allow submounts for the same fuse_conn, but with different
superblocks so that each of the submounts has its own device ID.  To do
so, we need to split all mount-specific information off of fuse_conn
into a new fuse_mount structure, so that multiple mounts can share a
single fuse_conn.

We need to take care only to perform connection-level actions once (i.e.
when the fuse_conn and thus the first fuse_mount are established, or
when the last fuse_mount and thus the fuse_conn are destroyed).  For
example, fuse_sb_destroy() must invoke fuse_send_destroy() until the
last superblock is released.

To do so, we keep track of which fuse_mount is the root mount and
perform all fuse_conn-level actions only when this fuse_mount is
involved.
Signed-off-by: default avatarMax Reitz <mreitz@redhat.com>
Reviewed-by: default avatarStefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: default avatarMiklos Szeredi <mszeredi@redhat.com>
parent 8f622e94
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Showing with 526 additions and 358 deletions
fs/fuse/control.c
View file @ fcee216b
......@@ -164,6 +164,7 @@ static ssize_t fuse_conn_congestion_threshold_write(struct file *file,
{
unsigned val;
struct fuse_conn *fc;
struct fuse_mount *fm;
ssize_t ret;
ret = fuse_conn_limit_write(file, buf, count, ppos, &val,
......@@ -174,18 +175,27 @@ static ssize_t fuse_conn_congestion_threshold_write(struct file *file,
if (!fc)
goto out;
down_read(&fc->killsb);
spin_lock(&fc->bg_lock);
fc->congestion_threshold = val;
if (fc->sb) {
/*
* Get any fuse_mount belonging to this fuse_conn; s_bdi is
* shared between all of them
*/
if (!list_empty(&fc->mounts)) {
fm = list_first_entry(&fc->mounts, struct fuse_mount, fc_entry);
if (fc->num_background < fc->congestion_threshold) {
clear_bdi_congested(fc->sb->s_bdi, BLK_RW_SYNC);
clear_bdi_congested(fc->sb->s_bdi, BLK_RW_ASYNC);
clear_bdi_congested(fm->sb->s_bdi, BLK_RW_SYNC);
clear_bdi_congested(fm->sb->s_bdi, BLK_RW_ASYNC);
} else {
set_bdi_congested(fc->sb->s_bdi, BLK_RW_SYNC);
set_bdi_congested(fc->sb->s_bdi, BLK_RW_ASYNC);
set_bdi_congested(fm->sb->s_bdi, BLK_RW_SYNC);
set_bdi_congested(fm->sb->s_bdi, BLK_RW_ASYNC);
}
}
spin_unlock(&fc->bg_lock);
up_read(&fc->killsb);
fuse_conn_put(fc);
out:
return ret;
......
fs/fuse/cuse.c
View file @ fcee216b
......@@ -57,6 +57,7 @@
struct cuse_conn {
struct list_head list; /* linked on cuse_conntbl */
struct fuse_mount fm; /* Dummy mount referencing fc */
struct fuse_conn fc; /* fuse connection */
struct cdev *cdev; /* associated character device */
struct device *dev; /* device representing @cdev */
......@@ -134,7 +135,7 @@ static int cuse_open(struct inode *inode, struct file *file)
* Generic permission check is already done against the chrdev
* file, proceed to open.
*/
rc = fuse_do_open(&cc->fc, 0, file, 0);
rc = fuse_do_open(&cc->fm, 0, file, 0);
if (rc)
fuse_conn_put(&cc->fc);
return rc;
......@@ -143,10 +144,10 @@ static int cuse_open(struct inode *inode, struct file *file)
static int cuse_release(struct inode *inode, struct file *file)
{
struct fuse_file *ff = file->private_data;
struct fuse_conn *fc = ff->fc;
struct fuse_mount *fm = ff->fm;
fuse_sync_release(NULL, ff, file->f_flags);
fuse_conn_put(fc);
fuse_conn_put(fm->fc);
return 0;
}
......@@ -155,7 +156,7 @@ static long cuse_file_ioctl(struct file *file, unsigned int cmd,
unsigned long arg)
{
struct fuse_file *ff = file->private_data;
struct cuse_conn *cc = fc_to_cc(ff->fc);
struct cuse_conn *cc = fc_to_cc(ff->fm->fc);
unsigned int flags = 0;
if (cc->unrestricted_ioctl)
......@@ -168,7 +169,7 @@ static long cuse_file_compat_ioctl(struct file *file, unsigned int cmd,
unsigned long arg)
{
struct fuse_file *ff = file->private_data;
struct cuse_conn *cc = fc_to_cc(ff->fc);
struct cuse_conn *cc = fc_to_cc(ff->fm->fc);
unsigned int flags = FUSE_IOCTL_COMPAT;
if (cc->unrestricted_ioctl)
......@@ -313,9 +314,10 @@ struct cuse_init_args {
* required data structures for it. Please read the comment at the
* top of this file for high level overview.
*/
static void cuse_process_init_reply(struct fuse_conn *fc,
static void cuse_process_init_reply(struct fuse_mount *fm,
struct fuse_args *args, int error)
{
struct fuse_conn *fc = fm->fc;
struct cuse_init_args *ia = container_of(args, typeof(*ia), ap.args);
struct fuse_args_pages *ap = &ia->ap;
struct cuse_conn *cc = fc_to_cc(fc), *pos;
......@@ -424,7 +426,7 @@ static int cuse_send_init(struct cuse_conn *cc)
{
int rc;
struct page *page;
struct fuse_conn *fc = &cc->fc;
struct fuse_mount *fm = &cc->fm;
struct cuse_init_args *ia;
struct fuse_args_pages *ap;
......@@ -460,7 +462,7 @@ static int cuse_send_init(struct cuse_conn *cc)
ia->desc.length = ap->args.out_args[1].size;
ap->args.end = cuse_process_init_reply;
rc = fuse_simple_background(fc, &ap->args, GFP_KERNEL);
rc = fuse_simple_background(fm, &ap->args, GFP_KERNEL);
if (rc) {
kfree(ia);
err_free_page:
......@@ -506,7 +508,8 @@ static int cuse_channel_open(struct inode *inode, struct file *file)
* Limit the cuse channel to requests that can
* be represented in file->f_cred->user_ns.
*/
fuse_conn_init(&cc->fc, file->f_cred->user_ns, &fuse_dev_fiq_ops, NULL);
fuse_conn_init(&cc->fc, &cc->fm, file->f_cred->user_ns,
&fuse_dev_fiq_ops, NULL);
fud = fuse_dev_alloc_install(&cc->fc);
if (!fud) {
......
fs/fuse/dax.c
View file @ fcee216b
......@@ -182,8 +182,8 @@ static int fuse_setup_one_mapping(struct inode *inode, unsigned long start_idx,
struct fuse_dax_mapping *dmap, bool writable,
bool upgrade)
{
struct fuse_conn *fc = get_fuse_conn(inode);
struct fuse_conn_dax *fcd = fc->dax;
struct fuse_mount *fm = get_fuse_mount(inode);
struct fuse_conn_dax *fcd = fm->fc->dax;
struct fuse_inode *fi = get_fuse_inode(inode);
struct fuse_setupmapping_in inarg;
loff_t offset = start_idx << FUSE_DAX_SHIFT;
......@@ -206,7 +206,7 @@ static int fuse_setup_one_mapping(struct inode *inode, unsigned long start_idx,
args.in_numargs = 1;
args.in_args[0].size = sizeof(inarg);
args.in_args[0].value = &inarg;
err = fuse_simple_request(fc, &args);
err = fuse_simple_request(fm, &args);
if (err < 0)
return err;
dmap->writable = writable;
......@@ -234,7 +234,7 @@ static int fuse_send_removemapping(struct inode *inode,
struct fuse_removemapping_one *remove_one)
{
struct fuse_inode *fi = get_fuse_inode(inode);
struct fuse_conn *fc = get_fuse_conn(inode);
struct fuse_mount *fm = get_fuse_mount(inode);
FUSE_ARGS(args);
args.opcode = FUSE_REMOVEMAPPING;
......@@ -244,7 +244,7 @@ static int fuse_send_removemapping(struct inode *inode,
args.in_args[0].value = inargp;
args.in_args[1].size = inargp->count * sizeof(*remove_one);
args.in_args[1].value = remove_one;
return fuse_simple_request(fc, &args);
return fuse_simple_request(fm, &args);
}
static int dmap_removemapping_list(struct inode *inode, unsigned int num,
......
fs/fuse/dev.c
View file @ fcee216b
......@@ -40,21 +40,21 @@ static struct fuse_dev *fuse_get_dev(struct file *file)
return READ_ONCE(file->private_data);
}
static void fuse_request_init(struct fuse_conn *fc, struct fuse_req *req)
static void fuse_request_init(struct fuse_mount *fm, struct fuse_req *req)
{
INIT_LIST_HEAD(&req->list);
INIT_LIST_HEAD(&req->intr_entry);
init_waitqueue_head(&req->waitq);
refcount_set(&req->count, 1);
__set_bit(FR_PENDING, &req->flags);
req->fc = fc;
req->fm = fm;
}
static struct fuse_req *fuse_request_alloc(struct fuse_conn *fc, gfp_t flags)
static struct fuse_req *fuse_request_alloc(struct fuse_mount *fm, gfp_t flags)
{
struct fuse_req *req = kmem_cache_zalloc(fuse_req_cachep, flags);
if (req)
fuse_request_init(fc, req);
fuse_request_init(fm, req);
return req;
}
......@@ -103,8 +103,9 @@ static void fuse_drop_waiting(struct fuse_conn *fc)
static void fuse_put_request(struct fuse_req *req);
static struct fuse_req *fuse_get_req(struct fuse_conn *fc, bool for_background)
static struct fuse_req *fuse_get_req(struct fuse_mount *fm, bool for_background)
{
struct fuse_conn *fc = fm->fc;
struct fuse_req *req;
int err;
atomic_inc(&fc->num_waiting);
......@@ -126,7 +127,7 @@ static struct fuse_req *fuse_get_req(struct fuse_conn *fc, bool for_background)
if (fc->conn_error)
goto out;
req = fuse_request_alloc(fc, GFP_KERNEL);
req = fuse_request_alloc(fm, GFP_KERNEL);
err = -ENOMEM;
if (!req) {
if (for_background)
......@@ -156,7 +157,7 @@ static struct fuse_req *fuse_get_req(struct fuse_conn *fc, bool for_background)
static void fuse_put_request(struct fuse_req *req)
{
struct fuse_conn *fc = req->fc;
struct fuse_conn *fc = req->fm->fc;
if (refcount_dec_and_test(&req->count)) {
if (test_bit(FR_BACKGROUND, &req->flags)) {
......@@ -278,7 +279,8 @@ static void flush_bg_queue(struct fuse_conn *fc)
*/
void fuse_request_end(struct fuse_req *req)
{
struct fuse_conn *fc = req->fc;
struct fuse_mount *fm = req->fm;
struct fuse_conn *fc = fm->fc;
struct fuse_iqueue *fiq = &fc->iq;
if (test_and_set_bit(FR_FINISHED, &req->flags))
......@@ -313,9 +315,9 @@ void fuse_request_end(struct fuse_req *req)
wake_up(&fc->blocked_waitq);
}
if (fc->num_background == fc->congestion_threshold && fc->sb) {
clear_bdi_congested(fc->sb->s_bdi, BLK_RW_SYNC);
clear_bdi_congested(fc->sb->s_bdi, BLK_RW_ASYNC);
if (fc->num_background == fc->congestion_threshold && fm->sb) {
clear_bdi_congested(fm->sb->s_bdi, BLK_RW_SYNC);
clear_bdi_congested(fm->sb->s_bdi, BLK_RW_ASYNC);
}
fc->num_background--;
fc->active_background--;
......@@ -327,7 +329,7 @@ void fuse_request_end(struct fuse_req *req)
}
if (test_bit(FR_ASYNC, &req->flags))
req->args->end(fc, req->args, req->out.h.error);
req->args->end(fm, req->args, req->out.h.error);
put_request:
fuse_put_request(req);
}
......@@ -335,7 +337,7 @@ EXPORT_SYMBOL_GPL(fuse_request_end);
static int queue_interrupt(struct fuse_req *req)
{
struct fuse_iqueue *fiq = &req->fc->iq;
struct fuse_iqueue *fiq = &req->fm->fc->iq;
spin_lock(&fiq->lock);
/* Check for we've sent request to interrupt this req */
......@@ -365,7 +367,7 @@ static int queue_interrupt(struct fuse_req *req)
static void request_wait_answer(struct fuse_req *req)
{
struct fuse_conn *fc = req->fc;
struct fuse_conn *fc = req->fm->fc;
struct fuse_iqueue *fiq = &fc->iq;
int err;
......@@ -411,7 +413,7 @@ static void request_wait_answer(struct fuse_req *req)
static void __fuse_request_send(struct fuse_req *req)
{
struct fuse_iqueue *fiq = &req->fc->iq;
struct fuse_iqueue *fiq = &req->fm->fc->iq;
BUG_ON(test_bit(FR_BACKGROUND, &req->flags));
spin_lock(&fiq->lock);
......@@ -466,7 +468,7 @@ static void fuse_adjust_compat(struct fuse_conn *fc, struct fuse_args *args)
static void fuse_force_creds(struct fuse_req *req)
{
struct fuse_conn *fc = req->fc;
struct fuse_conn *fc = req->fm->fc;
req->in.h.uid = from_kuid_munged(fc->user_ns, current_fsuid());
req->in.h.gid = from_kgid_munged(fc->user_ns, current_fsgid());
......@@ -482,14 +484,15 @@ static void fuse_args_to_req(struct fuse_req *req, struct fuse_args *args)
__set_bit(FR_ASYNC, &req->flags);
}
ssize_t fuse_simple_request(struct fuse_conn *fc, struct fuse_args *args)
ssize_t fuse_simple_request(struct fuse_mount *fm, struct fuse_args *args)
{
struct fuse_conn *fc = fm->fc;
struct fuse_req *req;
ssize_t ret;
if (args->force) {
atomic_inc(&fc->num_waiting);
req = fuse_request_alloc(fc, GFP_KERNEL | __GFP_NOFAIL);
req = fuse_request_alloc(fm, GFP_KERNEL | __GFP_NOFAIL);
if (!args->nocreds)
fuse_force_creds(req);
......@@ -498,7 +501,7 @@ ssize_t fuse_simple_request(struct fuse_conn *fc, struct fuse_args *args)
__set_bit(FR_FORCE, &req->flags);
} else {
WARN_ON(args->nocreds);
req = fuse_get_req(fc, false);
req = fuse_get_req(fm, false);
if (IS_ERR(req))
return PTR_ERR(req);
}
......@@ -522,7 +525,8 @@ ssize_t fuse_simple_request(struct fuse_conn *fc, struct fuse_args *args)
static bool fuse_request_queue_background(struct fuse_req *req)
{
struct fuse_conn *fc = req->fc;
struct fuse_mount *fm = req->fm;
struct fuse_conn *fc = fm->fc;
bool queued = false;
WARN_ON(!test_bit(FR_BACKGROUND, &req->flags));
......@@ -536,9 +540,9 @@ static bool fuse_request_queue_background(struct fuse_req *req)
fc->num_background++;
if (fc->num_background == fc->max_background)
fc->blocked = 1;
if (fc->num_background == fc->congestion_threshold && fc->sb) {
set_bdi_congested(fc->sb->s_bdi, BLK_RW_SYNC);
set_bdi_congested(fc->sb->s_bdi, BLK_RW_ASYNC);
if (fc->num_background == fc->congestion_threshold && fm->sb) {
set_bdi_congested(fm->sb->s_bdi, BLK_RW_SYNC);
set_bdi_congested(fm->sb->s_bdi, BLK_RW_ASYNC);
}
list_add_tail(&req->list, &fc->bg_queue);
flush_bg_queue(fc);
......@@ -549,20 +553,20 @@ static bool fuse_request_queue_background(struct fuse_req *req)
return queued;
}
int fuse_simple_background(struct fuse_conn *fc, struct fuse_args *args,
int fuse_simple_background(struct fuse_mount *fm, struct fuse_args *args,
gfp_t gfp_flags)
{
struct fuse_req *req;
if (args->force) {
WARN_ON(!args->nocreds);
req = fuse_request_alloc(fc, gfp_flags);
req = fuse_request_alloc(fm, gfp_flags);
if (!req)
return -ENOMEM;
__set_bit(FR_BACKGROUND, &req->flags);
} else {
WARN_ON(args->nocreds);
req = fuse_get_req(fc, true);
req = fuse_get_req(fm, true);
if (IS_ERR(req))
return PTR_ERR(req);
}
......@@ -578,14 +582,14 @@ int fuse_simple_background(struct fuse_conn *fc, struct fuse_args *args,
}
EXPORT_SYMBOL_GPL(fuse_simple_background);
static int fuse_simple_notify_reply(struct fuse_conn *fc,
static int fuse_simple_notify_reply(struct fuse_mount *fm,
struct fuse_args *args, u64 unique)
{
struct fuse_req *req;
struct fuse_iqueue *fiq = &fc->iq;
struct fuse_iqueue *fiq = &fm->fc->iq;
int err = 0;
req = fuse_get_req(fc, false);
req = fuse_get_req(fm, false);
if (IS_ERR(req))
return PTR_ERR(req);
......@@ -1433,11 +1437,8 @@ static int fuse_notify_inval_inode(struct fuse_conn *fc, unsigned int size,
fuse_copy_finish(cs);
down_read(&fc->killsb);
err = -ENOENT;
if (fc->sb) {
err = fuse_reverse_inval_inode(fc->sb, outarg.ino,
err = fuse_reverse_inval_inode(fc, outarg.ino,
outarg.off, outarg.len);
}
up_read(&fc->killsb);
return err;
......@@ -1483,9 +1484,7 @@ static int fuse_notify_inval_entry(struct fuse_conn *fc, unsigned int size,
buf[outarg.namelen] = 0;
down_read(&fc->killsb);
err = -ENOENT;
if (fc->sb)
err = fuse_reverse_inval_entry(fc->sb, outarg.parent, 0, &name);
err = fuse_reverse_inval_entry(fc, outarg.parent, 0, &name);
up_read(&fc->killsb);
kfree(buf);
return err;
......@@ -1533,10 +1532,7 @@ static int fuse_notify_delete(struct fuse_conn *fc, unsigned int size,
buf[outarg.namelen] = 0;
down_read(&fc->killsb);
err = -ENOENT;
if (fc->sb)
err = fuse_reverse_inval_entry(fc->sb, outarg.parent,
outarg.child, &name);
err = fuse_reverse_inval_entry(fc, outarg.parent, outarg.child, &name);
up_read(&fc->killsb);
kfree(buf);
return err;
......@@ -1578,10 +1574,7 @@ static int fuse_notify_store(struct fuse_conn *fc, unsigned int size,
down_read(&fc->killsb);
err = -ENOENT;
if (!fc->sb)
goto out_up_killsb;
inode = ilookup5(fc->sb, nodeid, fuse_inode_eq, &nodeid);
inode = fuse_ilookup(fc, nodeid, NULL);
if (!inode)
goto out_up_killsb;
......@@ -1638,7 +1631,7 @@ struct fuse_retrieve_args {
struct fuse_notify_retrieve_in inarg;
};
static void fuse_retrieve_end(struct fuse_conn *fc, struct fuse_args *args,
static void fuse_retrieve_end(struct fuse_mount *fm, struct fuse_args *args,
int error)
{
struct fuse_retrieve_args *ra =
......@@ -1648,7 +1641,7 @@ static void fuse_retrieve_end(struct fuse_conn *fc, struct fuse_args *args,
kfree(ra);
}
static int fuse_retrieve(struct fuse_conn *fc, struct inode *inode,
static int fuse_retrieve(struct fuse_mount *fm, struct inode *inode,
struct fuse_notify_retrieve_out *outarg)
{
int err;
......@@ -1659,6 +1652,7 @@ static int fuse_retrieve(struct fuse_conn *fc, struct inode *inode,
unsigned int offset;
size_t total_len = 0;
unsigned int num_pages;
struct fuse_conn *fc = fm->fc;
struct fuse_retrieve_args *ra;
size_t args_size = sizeof(*ra);
struct fuse_args_pages *ap;
......@@ -1720,9 +1714,9 @@ static int fuse_retrieve(struct fuse_conn *fc, struct inode *inode,
args->in_args[0].value = &ra->inarg;
args->in_args[1].size = total_len;
err = fuse_simple_notify_reply(fc, args, outarg->notify_unique);
err = fuse_simple_notify_reply(fm, args, outarg->notify_unique);
if (err)
fuse_retrieve_end(fc, args, err);
fuse_retrieve_end(fm, args, err);
return err;
}
......@@ -1731,7 +1725,9 @@ static int fuse_notify_retrieve(struct fuse_conn *fc, unsigned int size,
struct fuse_copy_state *cs)
{
struct fuse_notify_retrieve_out outarg;
struct fuse_mount *fm;
struct inode *inode;
u64 nodeid;
int err;
err = -EINVAL;
......@@ -1746,15 +1742,13 @@ static int fuse_notify_retrieve(struct fuse_conn *fc, unsigned int size,
down_read(&fc->killsb);
err = -ENOENT;
if (fc->sb) {
u64 nodeid = outarg.nodeid;
nodeid = outarg.nodeid;
inode = ilookup5(fc->sb, nodeid, fuse_inode_eq, &nodeid);
inode = fuse_ilookup(fc, nodeid, &fm);
if (inode) {
err = fuse_retrieve(fc, inode, &outarg);
err = fuse_retrieve(fm, inode, &outarg);
iput(inode);
}
}
up_read(&fc->killsb);
return err;
......
fs/fuse/dir.c
View file @ fcee216b
......@@ -196,7 +196,7 @@ static int fuse_dentry_revalidate(struct dentry *entry, unsigned int flags)
{
struct inode *inode;
struct dentry *parent;
struct fuse_conn *fc;
struct fuse_mount *fm;
struct fuse_inode *fi;
int ret;
......@@ -218,19 +218,19 @@ static int fuse_dentry_revalidate(struct dentry *entry, unsigned int flags)
if (flags & LOOKUP_RCU)
goto out;
fc = get_fuse_conn(inode);
fm = get_fuse_mount(inode);
forget = fuse_alloc_forget();
ret = -ENOMEM;
if (!forget)
goto out;
attr_version = fuse_get_attr_version(fc);
attr_version = fuse_get_attr_version(fm->fc);
parent = dget_parent(entry);
fuse_lookup_init(fc, &args, get_node_id(d_inode(parent)),
fuse_lookup_init(fm->fc, &args, get_node_id(d_inode(parent)),
&entry->d_name, &outarg);
ret = fuse_simple_request(fc, &args);
ret = fuse_simple_request(fm, &args);
dput(parent);
/* Zero nodeid is same as -ENOENT */
if (!ret && !outarg.nodeid)
......@@ -238,7 +238,8 @@ static int fuse_dentry_revalidate(struct dentry *entry, unsigned int flags)
if (!ret) {
fi = get_fuse_inode(inode);
if (outarg.nodeid != get_node_id(inode)) {
fuse_queue_forget(fc, forget, outarg.nodeid, 1);
fuse_queue_forget(fm->fc, forget,
outarg.nodeid, 1);
goto invalid;
}
spin_lock(&fi->lock);
......@@ -329,7 +330,7 @@ bool fuse_invalid_attr(struct fuse_attr *attr)
int fuse_lookup_name(struct super_block *sb, u64 nodeid, const struct qstr *name,
struct fuse_entry_out *outarg, struct inode **inode)
{
struct fuse_conn *fc = get_fuse_conn_super(sb);
struct fuse_mount *fm = get_fuse_mount_super(sb);
FUSE_ARGS(args);
struct fuse_forget_link *forget;
u64 attr_version;
......@@ -346,10 +347,10 @@ int fuse_lookup_name(struct super_block *sb, u64 nodeid, const struct qstr *name
if (!forget)
goto out;
attr_version = fuse_get_attr_version(fc);
attr_version = fuse_get_attr_version(fm->fc);
fuse_lookup_init(fc, &args, nodeid, name, outarg);
err = fuse_simple_request(fc, &args);
fuse_lookup_init(fm->fc, &args, nodeid, name, outarg);
err = fuse_simple_request(fm, &args);
/* Zero nodeid is same as -ENOENT, but with valid timeout */
if (err || !outarg->nodeid)
goto out_put_forget;
......@@ -365,7 +366,7 @@ int fuse_lookup_name(struct super_block *sb, u64 nodeid, const struct qstr *name
attr_version);
err = -ENOMEM;
if (!*inode) {
fuse_queue_forget(fc, forget, outarg->nodeid, 1);
fuse_queue_forget(fm->fc, forget, outarg->nodeid, 1);
goto out;
}
err = 0;
......@@ -434,7 +435,7 @@ static int fuse_create_open(struct inode *dir, struct dentry *entry,
{
int err;
struct inode *inode;
struct fuse_conn *fc = get_fuse_conn(dir);
struct fuse_mount *fm = get_fuse_mount(dir);
FUSE_ARGS(args);
struct fuse_forget_link *forget;
struct fuse_create_in inarg;
......@@ -452,11 +453,11 @@ static int fuse_create_open(struct inode *dir, struct dentry *entry,
goto out_err;
err = -ENOMEM;
ff = fuse_file_alloc(fc);
ff = fuse_file_alloc(fm);
if (!ff)
goto out_put_forget_req;
if (!fc->dont_mask)
if (!fm->fc->dont_mask)
mode &= ~current_umask();
flags &= ~O_NOCTTY;
......@@ -477,7 +478,7 @@ static int fuse_create_open(struct inode *dir, struct dentry *entry,
args.out_args[0].value = &outentry;
args.out_args[1].size = sizeof(outopen);
args.out_args[1].value = &outopen;
err = fuse_simple_request(fc, &args);
err = fuse_simple_request(fm, &args);
if (err)
goto out_free_ff;
......@@ -494,7 +495,7 @@ static int fuse_create_open(struct inode *dir, struct dentry *entry,
if (!inode) {
flags &= ~(O_CREAT | O_EXCL | O_TRUNC);
fuse_sync_release(NULL, ff, flags);
fuse_queue_forget(fc, forget, outentry.nodeid, 1);
fuse_queue_forget(fm->fc, forget, outentry.nodeid, 1);
err = -ENOMEM;
goto out_err;
}
......@@ -567,7 +568,7 @@ static int fuse_atomic_open(struct inode *dir, struct dentry *entry,
/*
* Code shared between mknod, mkdir, symlink and link
*/
static int create_new_entry(struct fuse_conn *fc, struct fuse_args *args,
static int create_new_entry(struct fuse_mount *fm, struct fuse_args *args,
struct inode *dir, struct dentry *entry,
umode_t mode)
{
......@@ -586,7 +587,7 @@ static int create_new_entry(struct fuse_conn *fc, struct fuse_args *args,
args->out_numargs = 1;
args->out_args[0].size = sizeof(outarg);
args->out_args[0].value = &outarg;
err = fuse_simple_request(fc, args);
err = fuse_simple_request(fm, args);
if (err)
goto out_put_forget_req;
......@@ -600,7 +601,7 @@ static int create_new_entry(struct fuse_conn *fc, struct fuse_args *args,
inode = fuse_iget(dir->i_sb, outarg.nodeid, outarg.generation,
&outarg.attr, entry_attr_timeout(&outarg), 0);
if (!inode) {
fuse_queue_forget(fc, forget, outarg.nodeid, 1);
fuse_queue_forget(fm->fc, forget, outarg.nodeid, 1);
return -ENOMEM;
}
kfree(forget);
......@@ -628,10 +629,10 @@ static int fuse_mknod(struct inode *dir, struct dentry *entry, umode_t mode,
dev_t rdev)
{
struct fuse_mknod_in inarg;
struct fuse_conn *fc = get_fuse_conn(dir);
struct fuse_mount *fm = get_fuse_mount(dir);
FUSE_ARGS(args);
if (!fc->dont_mask)
if (!fm->fc->dont_mask)
mode &= ~current_umask();
memset(&inarg, 0, sizeof(inarg));
......@@ -644,7 +645,7 @@ static int fuse_mknod(struct inode *dir, struct dentry *entry, umode_t mode,
args.in_args[0].value = &inarg;
args.in_args[1].size = entry->d_name.len + 1;
args.in_args[1].value = entry->d_name.name;
return create_new_entry(fc, &args, dir, entry, mode);
return create_new_entry(fm, &args, dir, entry, mode);
}
static int fuse_create(struct inode *dir, struct dentry *entry, umode_t mode,
......@@ -656,10 +657,10 @@ static int fuse_create(struct inode *dir, struct dentry *entry, umode_t mode,
static int fuse_mkdir(struct inode *dir, struct dentry *entry, umode_t mode)
{
struct fuse_mkdir_in inarg;
struct fuse_conn *fc = get_fuse_conn(dir);
struct fuse_mount *fm = get_fuse_mount(dir);
FUSE_ARGS(args);
if (!fc->dont_mask)
if (!fm->fc->dont_mask)
mode &= ~current_umask();
memset(&inarg, 0, sizeof(inarg));
......@@ -671,13 +672,13 @@ static int fuse_mkdir(struct inode *dir, struct dentry *entry, umode_t mode)
args.in_args[0].value = &inarg;
args.in_args[1].size = entry->d_name.len + 1;
args.in_args[1].value = entry->d_name.name;
return create_new_entry(fc, &args, dir, entry, S_IFDIR);
return create_new_entry(fm, &args, dir, entry, S_IFDIR);
}
static int fuse_symlink(struct inode *dir, struct dentry *entry,
const char *link)
{
struct fuse_conn *fc = get_fuse_conn(dir);
struct fuse_mount *fm = get_fuse_mount(dir);
unsigned len = strlen(link) + 1;
FUSE_ARGS(args);
......@@ -687,7 +688,7 @@ static int fuse_symlink(struct inode *dir, struct dentry *entry,
args.in_args[0].value = entry->d_name.name;
args.in_args[1].size = len;
args.in_args[1].value = link;
return create_new_entry(fc, &args, dir, entry, S_IFLNK);
return create_new_entry(fm, &args, dir, entry, S_IFLNK);
}
void fuse_update_ctime(struct inode *inode)
......@@ -701,7 +702,7 @@ void fuse_update_ctime(struct inode *inode)
static int fuse_unlink(struct inode *dir, struct dentry *entry)
{
int err;
struct fuse_conn *fc = get_fuse_conn(dir);
struct fuse_mount *fm = get_fuse_mount(dir);
FUSE_ARGS(args);
args.opcode = FUSE_UNLINK;
......@@ -709,13 +710,13 @@ static int fuse_unlink(struct inode *dir, struct dentry *entry)
args.in_numargs = 1;
args.in_args[0].size = entry->d_name.len + 1;
args.in_args[0].value = entry->d_name.name;
err = fuse_simple_request(fc, &args);
err = fuse_simple_request(fm, &args);
if (!err) {
struct inode *inode = d_inode(entry);
struct fuse_inode *fi = get_fuse_inode(inode);
spin_lock(&fi->lock);
fi->attr_version = atomic64_inc_return(&fc->attr_version);
fi->attr_version = atomic64_inc_return(&fm->fc->attr_version);
/*
* If i_nlink == 0 then unlink doesn't make sense, yet this can
* happen if userspace filesystem is careless. It would be
......@@ -737,7 +738,7 @@ static int fuse_unlink(struct inode *dir, struct dentry *entry)
static int fuse_rmdir(struct inode *dir, struct dentry *entry)
{
int err;
struct fuse_conn *fc = get_fuse_conn(dir);
struct fuse_mount *fm = get_fuse_mount(dir);
FUSE_ARGS(args);
args.opcode = FUSE_RMDIR;
......@@ -745,7 +746,7 @@ static int fuse_rmdir(struct inode *dir, struct dentry *entry)
args.in_numargs = 1;
args.in_args[0].size = entry->d_name.len + 1;
args.in_args[0].value = entry->d_name.name;
err = fuse_simple_request(fc, &args);
err = fuse_simple_request(fm, &args);
if (!err) {
clear_nlink(d_inode(entry));
fuse_dir_changed(dir);
......@@ -761,7 +762,7 @@ static int fuse_rename_common(struct inode *olddir, struct dentry *oldent,
{
int err;
struct fuse_rename2_in inarg;
struct fuse_conn *fc = get_fuse_conn(olddir);
struct fuse_mount *fm = get_fuse_mount(olddir);
FUSE_ARGS(args);
memset(&inarg, 0, argsize);
......@@ -776,7 +777,7 @@ static int fuse_rename_common(struct inode *olddir, struct dentry *oldent,
args.in_args[1].value = oldent->d_name.name;
args.in_args[2].size = newent->d_name.len + 1;
args.in_args[2].value = newent->d_name.name;
err = fuse_simple_request(fc, &args);
err = fuse_simple_request(fm, &args);
if (!err) {
/* ctime changes */
fuse_invalidate_attr(d_inode(oldent));
......@@ -847,7 +848,7 @@ static int fuse_link(struct dentry *entry, struct inode *newdir,
int err;
struct fuse_link_in inarg;
struct inode *inode = d_inode(entry);
struct fuse_conn *fc = get_fuse_conn(inode);
struct fuse_mount *fm = get_fuse_mount(inode);
FUSE_ARGS(args);
memset(&inarg, 0, sizeof(inarg));
......@@ -858,7 +859,7 @@ static int fuse_link(struct dentry *entry, struct inode *newdir,
args.in_args[0].value = &inarg;
args.in_args[1].size = newent->d_name.len + 1;
args.in_args[1].value = newent->d_name.name;
err = create_new_entry(fc, &args, newdir, newent, inode->i_mode);
err = create_new_entry(fm, &args, newdir, newent, inode->i_mode);
/* Contrary to "normal" filesystems it can happen that link
makes two "logical" inodes point to the same "physical"
inode. We invalidate the attributes of the old one, so it
......@@ -869,7 +870,7 @@ static int fuse_link(struct dentry *entry, struct inode *newdir,
struct fuse_inode *fi = get_fuse_inode(inode);
spin_lock(&fi->lock);
fi->attr_version = atomic64_inc_return(&fc->attr_version);
fi->attr_version = atomic64_inc_return(&fm->fc->attr_version);
if (likely(inode->i_nlink < UINT_MAX))
inc_nlink(inode);
spin_unlock(&fi->lock);
......@@ -926,11 +927,11 @@ static int fuse_do_getattr(struct inode *inode, struct kstat *stat,
int err;
struct fuse_getattr_in inarg;
struct fuse_attr_out outarg;
struct fuse_conn *fc = get_fuse_conn(inode);
struct fuse_mount *fm = get_fuse_mount(inode);
FUSE_ARGS(args);
u64 attr_version;
attr_version = fuse_get_attr_version(fc);
attr_version = fuse_get_attr_version(fm->fc);
memset(&inarg, 0, sizeof(inarg));
memset(&outarg, 0, sizeof(outarg));
......@@ -949,7 +950,7 @@ static int fuse_do_getattr(struct inode *inode, struct kstat *stat,
args.out_numargs = 1;
args.out_args[0].size = sizeof(outarg);
args.out_args[0].value = &outarg;
err = fuse_simple_request(fc, &args);
err = fuse_simple_request(fm, &args);
if (!err) {
if (fuse_invalid_attr(&outarg.attr) ||
(inode->i_mode ^ outarg.attr.mode) & S_IFMT) {
......@@ -1002,7 +1003,7 @@ int fuse_update_attributes(struct inode *inode, struct file *file)
STATX_BASIC_STATS & ~STATX_ATIME, 0);
}
int fuse_reverse_inval_entry(struct super_block *sb, u64 parent_nodeid,
int fuse_reverse_inval_entry(struct fuse_conn *fc, u64 parent_nodeid,
u64 child_nodeid, struct qstr *name)
{
int err = -ENOTDIR;
......@@ -1010,7 +1011,7 @@ int fuse_reverse_inval_entry(struct super_block *sb, u64 parent_nodeid,
struct dentry *dir;
struct dentry *entry;
parent = ilookup5(sb, parent_nodeid, fuse_inode_eq, &parent_nodeid);
parent = fuse_ilookup(fc, parent_nodeid, NULL);
if (!parent)
return -ENOENT;
......@@ -1102,14 +1103,14 @@ int fuse_allow_current_process(struct fuse_conn *fc)
static int fuse_access(struct inode *inode, int mask)
{
struct fuse_conn *fc = get_fuse_conn(inode);
struct fuse_mount *fm = get_fuse_mount(inode);
FUSE_ARGS(args);
struct fuse_access_in inarg;
int err;
BUG_ON(mask & MAY_NOT_BLOCK);
if (fc->no_access)
if (fm->fc->no_access)
return 0;
memset(&inarg, 0, sizeof(inarg));
......@@ -1119,9 +1120,9 @@ static int fuse_access(struct inode *inode, int mask)
args.in_numargs = 1;
args.in_args[0].size = sizeof(inarg);
args.in_args[0].value = &inarg;
err = fuse_simple_request(fc, &args);
err = fuse_simple_request(fm, &args);
if (err == -ENOSYS) {
fc->no_access = 1;
fm->fc->no_access = 1;
err = 0;
}
return err;
......@@ -1209,7 +1210,7 @@ static int fuse_permission(struct inode *inode, int mask)
static int fuse_readlink_page(struct inode *inode, struct page *page)
{
struct fuse_conn *fc = get_fuse_conn(inode);
struct fuse_mount *fm = get_fuse_mount(inode);
struct fuse_page_desc desc = { .length = PAGE_SIZE - 1 };
struct fuse_args_pages ap = {
.num_pages = 1,
......@@ -1226,7 +1227,7 @@ static int fuse_readlink_page(struct inode *inode, struct page *page)
ap.args.page_zeroing = true;
ap.args.out_numargs = 1;
ap.args.out_args[0].size = desc.length;
res = fuse_simple_request(fc, &ap.args);
res = fuse_simple_request(fm, &ap.args);
fuse_invalidate_atime(inode);
......@@ -1454,7 +1455,7 @@ static void fuse_setattr_fill(struct fuse_conn *fc, struct fuse_args *args,
*/
int fuse_flush_times(struct inode *inode, struct fuse_file *ff)
{
struct fuse_conn *fc = get_fuse_conn(inode);
struct fuse_mount *fm = get_fuse_mount(inode);
FUSE_ARGS(args);
struct fuse_setattr_in inarg;
struct fuse_attr_out outarg;
......@@ -1465,7 +1466,7 @@ int fuse_flush_times(struct inode *inode, struct fuse_file *ff)
inarg.valid = FATTR_MTIME;
inarg.mtime = inode->i_mtime.tv_sec;
inarg.mtimensec = inode->i_mtime.tv_nsec;
if (fc->minor >= 23) {
if (fm->fc->minor >= 23) {
inarg.valid |= FATTR_CTIME;
inarg.ctime = inode->i_ctime.tv_sec;
inarg.ctimensec = inode->i_ctime.tv_nsec;
......@@ -1474,9 +1475,9 @@ int fuse_flush_times(struct inode *inode, struct fuse_file *ff)
inarg.valid |= FATTR_FH;
inarg.fh = ff->fh;
}
fuse_setattr_fill(fc, &args, inode, &inarg, &outarg);
fuse_setattr_fill(fm->fc, &args, inode, &inarg, &outarg);
return fuse_simple_request(fc, &args);
return fuse_simple_request(fm, &args);
}
/*
......@@ -1491,7 +1492,8 @@ int fuse_do_setattr(struct dentry *dentry, struct iattr *attr,
struct file *file)
{
struct inode *inode = d_inode(dentry);
struct fuse_conn *fc = get_fuse_conn(inode);
struct fuse_mount *fm = get_fuse_mount(inode);
struct fuse_conn *fc = fm->fc;
struct fuse_inode *fi = get_fuse_inode(inode);
FUSE_ARGS(args);
struct fuse_setattr_in inarg;
......@@ -1577,7 +1579,7 @@ int fuse_do_setattr(struct dentry *dentry, struct iattr *attr,
inarg.lock_owner = fuse_lock_owner_id(fc, current->files);
}
fuse_setattr_fill(fc, &args, inode, &inarg, &outarg);
err = fuse_simple_request(fc, &args);
err = fuse_simple_request(fm, &args);
if (err) {
if (err == -EINTR)
fuse_invalidate_attr(inode);
......
fs/fuse/file.c
View file @ fcee216b
......@@ -32,7 +32,7 @@ static struct page **fuse_pages_alloc(unsigned int npages, gfp_t flags,
return pages;
}
static int fuse_send_open(struct fuse_conn *fc, u64 nodeid, struct file *file,
static int fuse_send_open(struct fuse_mount *fm, u64 nodeid, struct file *file,
int opcode, struct fuse_open_out *outargp)
{
struct fuse_open_in inarg;
......@@ -40,7 +40,7 @@ static int fuse_send_open(struct fuse_conn *fc, u64 nodeid, struct file *file,
memset(&inarg, 0, sizeof(inarg));
inarg.flags = file->f_flags & ~(O_CREAT | O_EXCL | O_NOCTTY);
if (!fc->atomic_o_trunc)
if (!fm->fc->atomic_o_trunc)
inarg.flags &= ~O_TRUNC;
args.opcode = opcode;
args.nodeid = nodeid;
......@@ -51,7 +51,7 @@ static int fuse_send_open(struct fuse_conn *fc, u64 nodeid, struct file *file,
args.out_args[0].size = sizeof(*outargp);
args.out_args[0].value = outargp;
return fuse_simple_request(fc, &args);
return fuse_simple_request(fm, &args);
}
struct fuse_release_args {
......@@ -60,7 +60,7 @@ struct fuse_release_args {
struct inode *inode;
};
struct fuse_file *fuse_file_alloc(struct fuse_conn *fc)
struct fuse_file *fuse_file_alloc(struct fuse_mount *fm)
{
struct fuse_file *ff;
......@@ -68,7 +68,7 @@ struct fuse_file *fuse_file_alloc(struct fuse_conn *fc)
if (unlikely(!ff))
return NULL;
ff->fc = fc;
ff->fm = fm;
ff->release_args = kzalloc(sizeof(*ff->release_args),
GFP_KERNEL_ACCOUNT);
if (!ff->release_args) {
......@@ -82,7 +82,7 @@ struct fuse_file *fuse_file_alloc(struct fuse_conn *fc)
RB_CLEAR_NODE(&ff->polled_node);
init_waitqueue_head(&ff->poll_wait);
ff->kh = atomic64_inc_return(&fc->khctr);
ff->kh = atomic64_inc_return(&fm->fc->khctr);
return ff;
}
......@@ -100,7 +100,7 @@ static struct fuse_file *fuse_file_get(struct fuse_file *ff)
return ff;
}
static void fuse_release_end(struct fuse_conn *fc, struct fuse_args *args,
static void fuse_release_end(struct fuse_mount *fm, struct fuse_args *args,
int error)
{
struct fuse_release_args *ra = container_of(args, typeof(*ra), args);
......@@ -114,29 +114,30 @@ static void fuse_file_put(struct fuse_file *ff, bool sync, bool isdir)
if (refcount_dec_and_test(&ff->count)) {
struct fuse_args *args = &ff->release_args->args;
if (isdir ? ff->fc->no_opendir : ff->fc->no_open) {
if (isdir ? ff->fm->fc->no_opendir : ff->fm->fc->no_open) {
/* Do nothing when client does not implement 'open' */
fuse_release_end(ff->fc, args, 0);
fuse_release_end(ff->fm, args, 0);
} else if (sync) {
fuse_simple_request(ff->fc, args);
fuse_release_end(ff->fc, args, 0);
fuse_simple_request(ff->fm, args);
fuse_release_end(ff->fm, args, 0);
} else {
args->end = fuse_release_end;
if (fuse_simple_background(ff->fc, args,
if (fuse_simple_background(ff->fm, args,
GFP_KERNEL | __GFP_NOFAIL))
fuse_release_end(ff->fc, args, -ENOTCONN);
fuse_release_end(ff->fm, args, -ENOTCONN);
}
kfree(ff);
}
}
int fuse_do_open(struct fuse_conn *fc, u64 nodeid, struct file *file,
int fuse_do_open(struct fuse_mount *fm, u64 nodeid, struct file *file,
bool isdir)
{
struct fuse_conn *fc = fm->fc;
struct fuse_file *ff;
int opcode = isdir ? FUSE_OPENDIR : FUSE_OPEN;
ff = fuse_file_alloc(fc);
ff = fuse_file_alloc(fm);
if (!ff)
return -ENOMEM;
......@@ -147,7 +148,7 @@ int fuse_do_open(struct fuse_conn *fc, u64 nodeid, struct file *file,
struct fuse_open_out outarg;
int err;
err = fuse_send_open(fc, nodeid, file, opcode, &outarg);
err = fuse_send_open(fm, nodeid, file, opcode, &outarg);
if (!err) {
ff->fh = outarg.fh;
ff->open_flags = outarg.open_flags;
......@@ -216,7 +217,8 @@ void fuse_finish_open(struct inode *inode, struct file *file)
int fuse_open_common(struct inode *inode, struct file *file, bool isdir)
{
struct fuse_conn *fc = get_fuse_conn(inode);
struct fuse_mount *fm = get_fuse_mount(inode);
struct fuse_conn *fc = fm->fc;
int err;
bool is_wb_truncate = (file->f_flags & O_TRUNC) &&
fc->atomic_o_trunc &&
......@@ -240,7 +242,7 @@ int fuse_open_common(struct inode *inode, struct file *file, bool isdir)
goto out;
}
err = fuse_do_open(fc, get_node_id(inode), file, isdir);
err = fuse_do_open(fm, get_node_id(inode), file, isdir);
if (!err)
fuse_finish_open(inode, file);
......@@ -259,7 +261,7 @@ int fuse_open_common(struct inode *inode, struct file *file, bool isdir)
static void fuse_prepare_release(struct fuse_inode *fi, struct fuse_file *ff,
int flags, int opcode)
{
struct fuse_conn *fc = ff->fc;
struct fuse_conn *fc = ff->fm->fc;
struct fuse_release_args *ra = ff->release_args;
/* Inode is NULL on error path of fuse_create_open() */
......@@ -297,7 +299,7 @@ void fuse_release_common(struct file *file, bool isdir)
if (ff->flock) {
ra->inarg.release_flags |= FUSE_RELEASE_FLOCK_UNLOCK;
ra->inarg.lock_owner = fuse_lock_owner_id(ff->fc,
ra->inarg.lock_owner = fuse_lock_owner_id(ff->fm->fc,
(fl_owner_t) file);
}
/* Hold inode until release is finished */
......@@ -312,7 +314,7 @@ void fuse_release_common(struct file *file, bool isdir)
* synchronous RELEASE is allowed (and desirable) in this case
* because the server can be trusted not to screw up.
*/
fuse_file_put(ff, ff->fc->destroy, isdir);
fuse_file_put(ff, ff->fm->fc->destroy, isdir);
}
static int fuse_open(struct inode *inode, struct file *file)
......@@ -455,7 +457,7 @@ static void fuse_sync_writes(struct inode *inode)
static int fuse_flush(struct file *file, fl_owner_t id)
{
struct inode *inode = file_inode(file);
struct fuse_conn *fc = get_fuse_conn(inode);
struct fuse_mount *fm = get_fuse_mount(inode);
struct fuse_file *ff = file->private_data;
struct fuse_flush_in inarg;
FUSE_ARGS(args);
......@@ -477,12 +479,12 @@ static int fuse_flush(struct file *file, fl_owner_t id)
return err;
err = 0;
if (fc->no_flush)
if (fm->fc->no_flush)
goto inval_attr_out;
memset(&inarg, 0, sizeof(inarg));
inarg.fh = ff->fh;
inarg.lock_owner = fuse_lock_owner_id(fc, id);
inarg.lock_owner = fuse_lock_owner_id(fm->fc, id);
args.opcode = FUSE_FLUSH;
args.nodeid = get_node_id(inode);
args.in_numargs = 1;
......@@ -490,9 +492,9 @@ static int fuse_flush(struct file *file, fl_owner_t id)
args.in_args[0].value = &inarg;
args.force = true;
err = fuse_simple_request(fc, &args);
err = fuse_simple_request(fm, &args);
if (err == -ENOSYS) {
fc->no_flush = 1;
fm->fc->no_flush = 1;
err = 0;
}
......@@ -501,7 +503,7 @@ static int fuse_flush(struct file *file, fl_owner_t id)
* In memory i_blocks is not maintained by fuse, if writeback cache is
* enabled, i_blocks from cached attr may not be accurate.
*/
if (!err && fc->writeback_cache)
if (!err && fm->fc->writeback_cache)
fuse_invalidate_attr(inode);
return err;
}
......@@ -510,7 +512,7 @@ int fuse_fsync_common(struct file *file, loff_t start, loff_t end,
int datasync, int opcode)
{
struct inode *inode = file->f_mapping->host;
struct fuse_conn *fc = get_fuse_conn(inode);
struct fuse_mount *fm = get_fuse_mount(inode);
struct fuse_file *ff = file->private_data;
FUSE_ARGS(args);
struct fuse_fsync_in inarg;
......@@ -523,7 +525,7 @@ int fuse_fsync_common(struct file *file, loff_t start, loff_t end,
args.in_numargs = 1;
args.in_args[0].size = sizeof(inarg);
args.in_args[0].value = &inarg;
return fuse_simple_request(fc, &args);
return fuse_simple_request(fm, &args);
}
static int fuse_fsync(struct file *file, loff_t start, loff_t end,
......@@ -698,7 +700,7 @@ static void fuse_io_free(struct fuse_io_args *ia)
kfree(ia);
}
static void fuse_aio_complete_req(struct fuse_conn *fc, struct fuse_args *args,
static void fuse_aio_complete_req(struct fuse_mount *fm, struct fuse_args *args,
int err)
{
struct fuse_io_args *ia = container_of(args, typeof(*ia), ap.args);
......@@ -727,7 +729,7 @@ static void fuse_aio_complete_req(struct fuse_conn *fc, struct fuse_args *args,
fuse_io_free(ia);
}
static ssize_t fuse_async_req_send(struct fuse_conn *fc,
static ssize_t fuse_async_req_send(struct fuse_mount *fm,
struct fuse_io_args *ia, size_t num_bytes)
{
ssize_t err;
......@@ -741,9 +743,9 @@ static ssize_t fuse_async_req_send(struct fuse_conn *fc,
ia->ap.args.end = fuse_aio_complete_req;
ia->ap.args.may_block = io->should_dirty;
err = fuse_simple_background(fc, &ia->ap.args, GFP_KERNEL);
err = fuse_simple_background(fm, &ia->ap.args, GFP_KERNEL);
if (err)
fuse_aio_complete_req(fc, &ia->ap.args, err);
fuse_aio_complete_req(fm, &ia->ap.args, err);
return num_bytes;
}
......@@ -753,18 +755,18 @@ static ssize_t fuse_send_read(struct fuse_io_args *ia, loff_t pos, size_t count,
{
struct file *file = ia->io->iocb->ki_filp;
struct fuse_file *ff = file->private_data;
struct fuse_conn *fc = ff->fc;
struct fuse_mount *fm = ff->fm;
fuse_read_args_fill(ia, file, pos, count, FUSE_READ);
if (owner != NULL) {
ia->read.in.read_flags |= FUSE_READ_LOCKOWNER;
ia->read.in.lock_owner = fuse_lock_owner_id(fc, owner);
ia->read.in.lock_owner = fuse_lock_owner_id(fm->fc, owner);
}
if (ia->io->async)
return fuse_async_req_send(fc, ia, count);
return fuse_async_req_send(fm, ia, count);
return fuse_simple_request(fc, &ia->ap.args);
return fuse_simple_request(fm, &ia->ap.args);
}
static void fuse_read_update_size(struct inode *inode, loff_t size,
......@@ -810,7 +812,7 @@ static void fuse_short_read(struct inode *inode, u64 attr_ver, size_t num_read,
static int fuse_do_readpage(struct file *file, struct page *page)
{
struct inode *inode = page->mapping->host;
struct fuse_conn *fc = get_fuse_conn(inode);
struct fuse_mount *fm = get_fuse_mount(inode);
loff_t pos = page_offset(page);
struct fuse_page_desc desc = { .length = PAGE_SIZE };
struct fuse_io_args ia = {
......@@ -830,14 +832,14 @@ static int fuse_do_readpage(struct file *file, struct page *page)
*/
fuse_wait_on_page_writeback(inode, page->index);
attr_ver = fuse_get_attr_version(fc);
attr_ver = fuse_get_attr_version(fm->fc);
/* Don't overflow end offset */
if (pos + (desc.length - 1) == LLONG_MAX)
desc.length--;
fuse_read_args_fill(&ia, file, pos, desc.length, FUSE_READ);
res = fuse_simple_request(fc, &ia.ap.args);
res = fuse_simple_request(fm, &ia.ap.args);
if (res < 0)
return res;
/*
......@@ -867,7 +869,7 @@ static int fuse_readpage(struct file *file, struct page *page)
return err;
}
static void fuse_readpages_end(struct fuse_conn *fc, struct fuse_args *args,
static void fuse_readpages_end(struct fuse_mount *fm, struct fuse_args *args,
int err)
{
int i;
......@@ -911,7 +913,7 @@ static void fuse_readpages_end(struct fuse_conn *fc, struct fuse_args *args,
static void fuse_send_readpages(struct fuse_io_args *ia, struct file *file)
{
struct fuse_file *ff = file->private_data;
struct fuse_conn *fc = ff->fc;
struct fuse_mount *fm = ff->fm;
struct fuse_args_pages *ap = &ia->ap;
loff_t pos = page_offset(ap->pages[0]);
size_t count = ap->num_pages << PAGE_SHIFT;
......@@ -930,18 +932,18 @@ static void fuse_send_readpages(struct fuse_io_args *ia, struct file *file)
WARN_ON((loff_t) (pos + count) < 0);
fuse_read_args_fill(ia, file, pos, count, FUSE_READ);
ia->read.attr_ver = fuse_get_attr_version(fc);
if (fc->async_read) {
ia->read.attr_ver = fuse_get_attr_version(fm->fc);
if (fm->fc->async_read) {
ia->ff = fuse_file_get(ff);
ap->args.end = fuse_readpages_end;
err = fuse_simple_background(fc, &ap->args, GFP_KERNEL);
err = fuse_simple_background(fm, &ap->args, GFP_KERNEL);
if (!err)
return;
} else {
res = fuse_simple_request(fc, &ap->args);
res = fuse_simple_request(fm, &ap->args);
err = res < 0 ? res : 0;
}
fuse_readpages_end(fc, &ap->args, err);
fuse_readpages_end(fm, &ap->args, err);
}
static void fuse_readahead(struct readahead_control *rac)
......@@ -1012,7 +1014,7 @@ static void fuse_write_args_fill(struct fuse_io_args *ia, struct fuse_file *ff,
args->opcode = FUSE_WRITE;
args->nodeid = ff->nodeid;
args->in_numargs = 2;
if (ff->fc->minor < 9)
if (ff->fm->fc->minor < 9)
args->in_args[0].size = FUSE_COMPAT_WRITE_IN_SIZE;
else
args->in_args[0].size = sizeof(ia->write.in);
......@@ -1041,7 +1043,7 @@ static ssize_t fuse_send_write(struct fuse_io_args *ia, loff_t pos,
struct kiocb *iocb = ia->io->iocb;
struct file *file = iocb->ki_filp;
struct fuse_file *ff = file->private_data;
struct fuse_conn *fc = ff->fc;
struct fuse_mount *fm = ff->fm;
struct fuse_write_in *inarg = &ia->write.in;
ssize_t err;
......@@ -1049,13 +1051,13 @@ static ssize_t fuse_send_write(struct fuse_io_args *ia, loff_t pos,
inarg->flags = fuse_write_flags(iocb);
if (owner != NULL) {
inarg->write_flags |= FUSE_WRITE_LOCKOWNER;
inarg->lock_owner = fuse_lock_owner_id(fc, owner);
inarg->lock_owner = fuse_lock_owner_id(fm->fc, owner);
}
if (ia->io->async)
return fuse_async_req_send(fc, ia, count);
return fuse_async_req_send(fm, ia, count);
err = fuse_simple_request(fc, &ia->ap.args);
err = fuse_simple_request(fm, &ia->ap.args);
if (!err && ia->write.out.size > count)
err = -EIO;
......@@ -1086,7 +1088,7 @@ static ssize_t fuse_send_write_pages(struct fuse_io_args *ia,
struct fuse_args_pages *ap = &ia->ap;
struct file *file = iocb->ki_filp;
struct fuse_file *ff = file->private_data;
struct fuse_conn *fc = ff->fc;
struct fuse_mount *fm = ff->fm;
unsigned int offset, i;
int err;
......@@ -1096,7 +1098,7 @@ static ssize_t fuse_send_write_pages(struct fuse_io_args *ia,
fuse_write_args_fill(ia, ff, pos, count);
ia->write.in.flags = fuse_write_flags(iocb);
err = fuse_simple_request(fc, &ap->args);
err = fuse_simple_request(fm, &ap->args);
if (!err && ia->write.out.size > count)
err = -EIO;
......@@ -1411,7 +1413,7 @@ ssize_t fuse_direct_io(struct fuse_io_priv *io, struct iov_iter *iter,
struct file *file = io->iocb->ki_filp;
struct inode *inode = file->f_mapping->host;
struct fuse_file *ff = file->private_data;
struct fuse_conn *fc = ff->fc;
struct fuse_conn *fc = ff->fm->fc;
size_t nmax = write ? fc->max_write : fc->max_read;
loff_t pos = *ppos;
size_t count = iov_iter_count(iter);
......@@ -1598,7 +1600,7 @@ static void fuse_writepage_free(struct fuse_writepage_args *wpa)
kfree(wpa);
}
static void fuse_writepage_finish(struct fuse_conn *fc,
static void fuse_writepage_finish(struct fuse_mount *fm,
struct fuse_writepage_args *wpa)
{
struct fuse_args_pages *ap = &wpa->ia.ap;
......@@ -1616,7 +1618,7 @@ static void fuse_writepage_finish(struct fuse_conn *fc,
}
/* Called under fi->lock, may release and reacquire it */
static void fuse_send_writepage(struct fuse_conn *fc,
static void fuse_send_writepage(struct fuse_mount *fm,
struct fuse_writepage_args *wpa, loff_t size)
__releases(fi->lock)
__acquires(fi->lock)
......@@ -1642,10 +1644,10 @@ __acquires(fi->lock)
args->force = true;
args->nocreds = true;
err = fuse_simple_background(fc, args, GFP_ATOMIC);
err = fuse_simple_background(fm, args, GFP_ATOMIC);
if (err == -ENOMEM) {
spin_unlock(&fi->lock);
err = fuse_simple_background(fc, args, GFP_NOFS | __GFP_NOFAIL);
err = fuse_simple_background(fm, args, GFP_NOFS | __GFP_NOFAIL);
spin_lock(&fi->lock);
}
......@@ -1658,7 +1660,7 @@ __acquires(fi->lock)
out_free:
fi->writectr--;
rb_erase(&wpa->writepages_entry, &fi->writepages);
fuse_writepage_finish(fc, wpa);
fuse_writepage_finish(fm, wpa);
spin_unlock(&fi->lock);
/* After fuse_writepage_finish() aux request list is private */
......@@ -1682,7 +1684,7 @@ void fuse_flush_writepages(struct inode *inode)
__releases(fi->lock)
__acquires(fi->lock)
{
struct fuse_conn *fc = get_fuse_conn(inode);
struct fuse_mount *fm = get_fuse_mount(inode);
struct fuse_inode *fi = get_fuse_inode(inode);
loff_t crop = i_size_read(inode);
struct fuse_writepage_args *wpa;
......@@ -1691,7 +1693,7 @@ __acquires(fi->lock)
wpa = list_entry(fi->queued_writes.next,
struct fuse_writepage_args, queue_entry);
list_del_init(&wpa->queue_entry);
fuse_send_writepage(fc, wpa, crop);
fuse_send_writepage(fm, wpa, crop);
}
}
......@@ -1732,7 +1734,7 @@ static void tree_insert(struct rb_root *root, struct fuse_writepage_args *wpa)
WARN_ON(fuse_insert_writeback(root, wpa));
}
static void fuse_writepage_end(struct fuse_conn *fc, struct fuse_args *args,
static void fuse_writepage_end(struct fuse_mount *fm, struct fuse_args *args,
int error)
{
struct fuse_writepage_args *wpa =
......@@ -1744,7 +1746,7 @@ static void fuse_writepage_end(struct fuse_conn *fc, struct fuse_args *args,
spin_lock(&fi->lock);
rb_erase(&wpa->writepages_entry, &fi->writepages);
while (wpa->next) {
struct fuse_conn *fc = get_fuse_conn(inode);
struct fuse_mount *fm = get_fuse_mount(inode);
struct fuse_write_in *inarg = &wpa->ia.write.in;
struct fuse_writepage_args *next = wpa->next;
......@@ -1776,10 +1778,10 @@ static void fuse_writepage_end(struct fuse_conn *fc, struct fuse_args *args,
* no invocations of fuse_writepage_end() while we're in
* fuse_set_nowrite..fuse_release_nowrite section.
*/
fuse_send_writepage(fc, next, inarg->offset + inarg->size);
fuse_send_writepage(fm, next, inarg->offset + inarg->size);
}
fi->writectr--;
fuse_writepage_finish(fc, wpa);
fuse_writepage_finish(fm, wpa);
spin_unlock(&fi->lock);
fuse_writepage_free(wpa);
}
......@@ -2419,7 +2421,7 @@ static void fuse_lk_fill(struct fuse_args *args, struct file *file,
static int fuse_getlk(struct file *file, struct file_lock *fl)
{
struct inode *inode = file_inode(file);
struct fuse_conn *fc = get_fuse_conn(inode);
struct fuse_mount *fm = get_fuse_mount(inode);
FUSE_ARGS(args);
struct fuse_lk_in inarg;
struct fuse_lk_out outarg;
......@@ -2429,9 +2431,9 @@ static int fuse_getlk(struct file *file, struct file_lock *fl)
args.out_numargs = 1;
args.out_args[0].size = sizeof(outarg);
args.out_args[0].value = &outarg;
err = fuse_simple_request(fc, &args);
err = fuse_simple_request(fm, &args);
if (!err)
err = convert_fuse_file_lock(fc, &outarg.lk, fl);
err = convert_fuse_file_lock(fm->fc, &outarg.lk, fl);
return err;
}
......@@ -2439,12 +2441,12 @@ static int fuse_getlk(struct file *file, struct file_lock *fl)
static int fuse_setlk(struct file *file, struct file_lock *fl, int flock)
{
struct inode *inode = file_inode(file);
struct fuse_conn *fc = get_fuse_conn(inode);
struct fuse_mount *fm = get_fuse_mount(inode);
FUSE_ARGS(args);
struct fuse_lk_in inarg;
int opcode = (fl->fl_flags & FL_SLEEP) ? FUSE_SETLKW : FUSE_SETLK;
struct pid *pid = fl->fl_type != F_UNLCK ? task_tgid(current) : NULL;
pid_t pid_nr = pid_nr_ns(pid, fc->pid_ns);
pid_t pid_nr = pid_nr_ns(pid, fm->fc->pid_ns);
int err;
if (fl->fl_lmops && fl->fl_lmops->lm_grant) {
......@@ -2457,7 +2459,7 @@ static int fuse_setlk(struct file *file, struct file_lock *fl, int flock)
return 0;
fuse_lk_fill(&args, file, fl, opcode, pid_nr, flock, &inarg);
err = fuse_simple_request(fc, &args);
err = fuse_simple_request(fm, &args);
/* locking is restartable */
if (err == -EINTR)
......@@ -2511,13 +2513,13 @@ static int fuse_file_flock(struct file *file, int cmd, struct file_lock *fl)
static sector_t fuse_bmap(struct address_space *mapping, sector_t block)
{
struct inode *inode = mapping->host;
struct fuse_conn *fc = get_fuse_conn(inode);
struct fuse_mount *fm = get_fuse_mount(inode);
FUSE_ARGS(args);
struct fuse_bmap_in inarg;
struct fuse_bmap_out outarg;
int err;
if (!inode->i_sb->s_bdev || fc->no_bmap)
if (!inode->i_sb->s_bdev || fm->fc->no_bmap)
return 0;
memset(&inarg, 0, sizeof(inarg));
......@@ -2531,9 +2533,9 @@ static sector_t fuse_bmap(struct address_space *mapping, sector_t block)
args.out_numargs = 1;
args.out_args[0].size = sizeof(outarg);
args.out_args[0].value = &outarg;
err = fuse_simple_request(fc, &args);
err = fuse_simple_request(fm, &args);
if (err == -ENOSYS)
fc->no_bmap = 1;
fm->fc->no_bmap = 1;
return err ? 0 : outarg.block;
}
......@@ -2541,7 +2543,7 @@ static sector_t fuse_bmap(struct address_space *mapping, sector_t block)
static loff_t fuse_lseek(struct file *file, loff_t offset, int whence)
{
struct inode *inode = file->f_mapping->host;
struct fuse_conn *fc = get_fuse_conn(inode);
struct fuse_mount *fm = get_fuse_mount(inode);
struct fuse_file *ff = file->private_data;
FUSE_ARGS(args);
struct fuse_lseek_in inarg = {
......@@ -2552,7 +2554,7 @@ static loff_t fuse_lseek(struct file *file, loff_t offset, int whence)
struct fuse_lseek_out outarg;
int err;
if (fc->no_lseek)
if (fm->fc->no_lseek)
goto fallback;
args.opcode = FUSE_LSEEK;
......@@ -2563,10 +2565,10 @@ static loff_t fuse_lseek(struct file *file, loff_t offset, int whence)
args.out_numargs = 1;
args.out_args[0].size = sizeof(outarg);
args.out_args[0].value = &outarg;
err = fuse_simple_request(fc, &args);
err = fuse_simple_request(fm, &args);
if (err) {
if (err == -ENOSYS) {
fc->no_lseek = 1;
fm->fc->no_lseek = 1;
goto fallback;
}
return err;
......@@ -2752,7 +2754,7 @@ long fuse_do_ioctl(struct file *file, unsigned int cmd, unsigned long arg,
unsigned int flags)
{
struct fuse_file *ff = file->private_data;
struct fuse_conn *fc = ff->fc;
struct fuse_mount *fm = ff->fm;
struct fuse_ioctl_in inarg = {
.fh = ff->fh,
.cmd = cmd,
......@@ -2785,12 +2787,12 @@ long fuse_do_ioctl(struct file *file, unsigned int cmd, unsigned long arg,
BUILD_BUG_ON(sizeof(struct fuse_ioctl_iovec) * FUSE_IOCTL_MAX_IOV > PAGE_SIZE);
err = -ENOMEM;
ap.pages = fuse_pages_alloc(fc->max_pages, GFP_KERNEL, &ap.descs);
ap.pages = fuse_pages_alloc(fm->fc->max_pages, GFP_KERNEL, &ap.descs);
iov_page = (struct iovec *) __get_free_page(GFP_KERNEL);
if (!ap.pages || !iov_page)
goto out;
fuse_page_descs_length_init(ap.descs, 0, fc->max_pages);
fuse_page_descs_length_init(ap.descs, 0, fm->fc->max_pages);
/*
* If restricted, initialize IO parameters as encoded in @cmd.
......@@ -2835,7 +2837,7 @@ long fuse_do_ioctl(struct file *file, unsigned int cmd, unsigned long arg,
/* make sure there are enough buffer pages and init request with them */
err = -ENOMEM;
if (max_pages > fc->max_pages)
if (max_pages > fm->fc->max_pages)
goto out;
while (ap.num_pages < max_pages) {
ap.pages[ap.num_pages] = alloc_page(GFP_KERNEL | __GFP_HIGHMEM);
......@@ -2872,7 +2874,7 @@ long fuse_do_ioctl(struct file *file, unsigned int cmd, unsigned long arg,
ap.args.out_pages = true;
ap.args.out_argvar = true;
transferred = fuse_simple_request(fc, &ap.args);
transferred = fuse_simple_request(fm, &ap.args);
err = transferred;
if (transferred < 0)
goto out;
......@@ -2900,7 +2902,7 @@ long fuse_do_ioctl(struct file *file, unsigned int cmd, unsigned long arg,
goto out;
vaddr = kmap_atomic(ap.pages[0]);
err = fuse_copy_ioctl_iovec(fc, iov_page, vaddr,
err = fuse_copy_ioctl_iovec(fm->fc, iov_page, vaddr,
transferred, in_iovs + out_iovs,
(flags & FUSE_IOCTL_COMPAT) != 0);
kunmap_atomic(vaddr);
......@@ -2910,11 +2912,11 @@ long fuse_do_ioctl(struct file *file, unsigned int cmd, unsigned long arg,
in_iov = iov_page;
out_iov = in_iov + in_iovs;
err = fuse_verify_ioctl_iov(fc, in_iov, in_iovs);
err = fuse_verify_ioctl_iov(fm->fc, in_iov, in_iovs);
if (err)
goto out;
err = fuse_verify_ioctl_iov(fc, out_iov, out_iovs);
err = fuse_verify_ioctl_iov(fm->fc, out_iov, out_iovs);
if (err)
goto out;
......@@ -3024,13 +3026,13 @@ static void fuse_register_polled_file(struct fuse_conn *fc,
__poll_t fuse_file_poll(struct file *file, poll_table *wait)
{
struct fuse_file *ff = file->private_data;
struct fuse_conn *fc = ff->fc;
struct fuse_mount *fm = ff->fm;
struct fuse_poll_in inarg = { .fh = ff->fh, .kh = ff->kh };
struct fuse_poll_out outarg;
FUSE_ARGS(args);
int err;
if (fc->no_poll)
if (fm->fc->no_poll)
return DEFAULT_POLLMASK;
poll_wait(file, &ff->poll_wait, wait);
......@@ -3042,7 +3044,7 @@ __poll_t fuse_file_poll(struct file *file, poll_table *wait)
*/
if (waitqueue_active(&ff->poll_wait)) {
inarg.flags |= FUSE_POLL_SCHEDULE_NOTIFY;
fuse_register_polled_file(fc, ff);
fuse_register_polled_file(fm->fc, ff);
}
args.opcode = FUSE_POLL;
......@@ -3053,12 +3055,12 @@ __poll_t fuse_file_poll(struct file *file, poll_table *wait)
args.out_numargs = 1;
args.out_args[0].size = sizeof(outarg);
args.out_args[0].value = &outarg;
err = fuse_simple_request(fc, &args);
err = fuse_simple_request(fm, &args);
if (!err)
return demangle_poll(outarg.revents);
if (err == -ENOSYS) {
fc->no_poll = 1;
fm->fc->no_poll = 1;
return DEFAULT_POLLMASK;
}
return EPOLLERR;
......@@ -3115,7 +3117,7 @@ fuse_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
ssize_t ret = 0;
struct file *file = iocb->ki_filp;
struct fuse_file *ff = file->private_data;
bool async_dio = ff->fc->async_dio;
bool async_dio = ff->fm->fc->async_dio;
loff_t pos = 0;
struct inode *inode;
loff_t i_size;
......@@ -3134,7 +3136,8 @@ fuse_direct_IO(struct kiocb *iocb, struct iov_iter *iter)
if (async_dio && iov_iter_rw(iter) != WRITE && offset + count > i_size) {
if (offset >= i_size)
return 0;
iov_iter_truncate(iter, fuse_round_up(ff->fc, i_size - offset));
iov_iter_truncate(iter, fuse_round_up(ff->fm->fc,
i_size - offset));
count = iov_iter_count(iter);
}
......@@ -3221,7 +3224,7 @@ static long fuse_file_fallocate(struct file *file, int mode, loff_t offset,
struct fuse_file *ff = file->private_data;
struct inode *inode = file_inode(file);
struct fuse_inode *fi = get_fuse_inode(inode);
struct fuse_conn *fc = ff->fc;
struct fuse_mount *fm = ff->fm;
FUSE_ARGS(args);
struct fuse_fallocate_in inarg = {
.fh = ff->fh,
......@@ -3238,7 +3241,7 @@ static long fuse_file_fallocate(struct file *file, int mode, loff_t offset,
if (mode & ~(FALLOC_FL_KEEP_SIZE | FALLOC_FL_PUNCH_HOLE))
return -EOPNOTSUPP;
if (fc->no_fallocate)
if (fm->fc->no_fallocate)
return -EOPNOTSUPP;
if (lock_inode) {
......@@ -3274,9 +3277,9 @@ static long fuse_file_fallocate(struct file *file, int mode, loff_t offset,
args.in_numargs = 1;
args.in_args[0].size = sizeof(inarg);
args.in_args[0].value = &inarg;
err = fuse_simple_request(fc, &args);
err = fuse_simple_request(fm, &args);
if (err == -ENOSYS) {
fc->no_fallocate = 1;
fm->fc->no_fallocate = 1;
err = -EOPNOTSUPP;
}
if (err)
......@@ -3286,7 +3289,7 @@ static long fuse_file_fallocate(struct file *file, int mode, loff_t offset,
if (!(mode & FALLOC_FL_KEEP_SIZE)) {
bool changed = fuse_write_update_size(inode, offset + length);
if (changed && fc->writeback_cache)
if (changed && fm->fc->writeback_cache)
file_update_time(file);
}
......@@ -3317,7 +3320,8 @@ static ssize_t __fuse_copy_file_range(struct file *file_in, loff_t pos_in,
struct inode *inode_in = file_inode(file_in);
struct inode *inode_out = file_inode(file_out);
struct fuse_inode *fi_out = get_fuse_inode(inode_out);
struct fuse_conn *fc = ff_in->fc;
struct fuse_mount *fm = ff_in->fm;
struct fuse_conn *fc = fm->fc;
FUSE_ARGS(args);
struct fuse_copy_file_range_in inarg = {
.fh_in = ff_in->fh,
......@@ -3386,7 +3390,7 @@ static ssize_t __fuse_copy_file_range(struct file *file_in, loff_t pos_in,
args.out_numargs = 1;
args.out_args[0].size = sizeof(outarg);
args.out_args[0].value = &outarg;
err = fuse_simple_request(fc, &args);
err = fuse_simple_request(fm, &args);
if (err == -ENOSYS) {
fc->no_copy_file_range = 1;
err = -EOPNOTSUPP;
......
fs/fuse/fuse_i.h
View file @ fcee216b
......@@ -175,12 +175,13 @@ enum {
};
struct fuse_conn;
struct fuse_mount;
struct fuse_release_args;
/** FUSE specific file data */
struct fuse_file {
/** Fuse connection for this file */
struct fuse_conn *fc;
struct fuse_mount *fm;
/* Argument space reserved for release */
struct fuse_release_args *release_args;
......@@ -266,7 +267,7 @@ struct fuse_args {
bool may_block:1;
struct fuse_in_arg in_args[3];
struct fuse_arg out_args[2];
void (*end)(struct fuse_conn *fc, struct fuse_args *args, int error);
void (*end)(struct fuse_mount *fm, struct fuse_args *args, int error);
};
struct fuse_args_pages {
......@@ -375,8 +376,8 @@ struct fuse_req {
void *argbuf;
#endif
/** fuse_conn this request belongs to */
struct fuse_conn *fc;
/** fuse_mount this request belongs to */
struct fuse_mount *fm;
};
struct fuse_iqueue;
......@@ -515,9 +516,9 @@ struct fuse_fs_context {
/**
* A Fuse connection.
*
* This structure is created, when the filesystem is mounted, and is
* destroyed, when the client device is closed and the filesystem is
* unmounted.
* This structure is created, when the root filesystem is mounted, and
* is destroyed, when the client device is closed and the last
* fuse_mount is destroyed.
*/
struct fuse_conn {
/** Lock protecting accessess to members of this structure */
......@@ -747,10 +748,10 @@ struct fuse_conn {
/** Negotiated minor version */
unsigned minor;
/** Entry on the fuse_conn_list */
/** Entry on the fuse_mount_list */
struct list_head entry;
/** Device ID from super block */
/** Device ID from the root super block */
dev_t dev;
/** Dentries in the control filesystem */
......@@ -768,10 +769,10 @@ struct fuse_conn {
/** Called on final put */
void (*release)(struct fuse_conn *);
/** Super block for this connection. */
struct super_block *sb;
/** Read/write semaphore to hold when accessing sb. */
/**
* Read/write semaphore to hold when accessing the sb of any
* fuse_mount belonging to this connection
*/
struct rw_semaphore killsb;
/** List of device instances belonging to this connection */
......@@ -781,16 +782,57 @@ struct fuse_conn {
/* Dax specific conn data, non-NULL if DAX is enabled */
struct fuse_conn_dax *dax;
#endif
/** List of filesystems using this connection */
struct list_head mounts;
};
static inline struct fuse_conn *get_fuse_conn_super(struct super_block *sb)
/*
* Represents a mounted filesystem, potentially a submount.
*
* This object allows sharing a fuse_conn between separate mounts to
* allow submounts with dedicated superblocks and thus separate device
* IDs.
*/
struct fuse_mount {
/* Underlying (potentially shared) connection to the FUSE server */
struct fuse_conn *fc;
/* Refcount */
refcount_t count;
/*
* Super block for this connection (fc->killsb must be held when
* accessing this).
*/
struct super_block *sb;
/* Entry on fc->mounts */
struct list_head fc_entry;
};
static inline struct fuse_mount *get_fuse_mount_super(struct super_block *sb)
{
return sb->s_fs_info;
}
static inline struct fuse_conn *get_fuse_conn_super(struct super_block *sb)
{
struct fuse_mount *fm = get_fuse_mount_super(sb);
return fm ? fm->fc : NULL;
}
static inline struct fuse_mount *get_fuse_mount(struct inode *inode)
{
return get_fuse_mount_super(inode->i_sb);
}
static inline struct fuse_conn *get_fuse_conn(struct inode *inode)
{
return get_fuse_conn_super(inode->i_sb);
struct fuse_mount *fm = get_fuse_mount(inode);
return fm ? fm->fc : NULL;
}
static inline struct fuse_inode *get_fuse_inode(struct inode *inode)
......@@ -819,11 +861,6 @@ extern const struct file_operations fuse_dev_operations;
extern const struct dentry_operations fuse_dentry_operations;
extern const struct dentry_operations fuse_root_dentry_operations;
/**
* Inode to nodeid comparison.
*/
int fuse_inode_eq(struct inode *inode, void *_nodeidp);
/**
* Get a filled in inode
*/
......@@ -874,7 +911,7 @@ void fuse_read_args_fill(struct fuse_io_args *ia, struct file *file, loff_t pos,
*/
int fuse_open_common(struct inode *inode, struct file *file, bool isdir);
struct fuse_file *fuse_file_alloc(struct fuse_conn *fc);
struct fuse_file *fuse_file_alloc(struct fuse_mount *fm);
void fuse_file_free(struct fuse_file *ff);
void fuse_finish_open(struct inode *inode, struct file *file);
......@@ -942,8 +979,8 @@ void __exit fuse_ctl_cleanup(void);
/**
* Simple request sending that does request allocation and freeing
*/
ssize_t fuse_simple_request(struct fuse_conn *fc, struct fuse_args *args);
int fuse_simple_background(struct fuse_conn *fc, struct fuse_args *args,
ssize_t fuse_simple_request(struct fuse_mount *fm, struct fuse_args *args);
int fuse_simple_background(struct fuse_mount *fm, struct fuse_args *args,
gfp_t gfp_flags);
/**
......@@ -975,7 +1012,8 @@ struct fuse_conn *fuse_conn_get(struct fuse_conn *fc);
/**
* Initialize fuse_conn
*/
void fuse_conn_init(struct fuse_conn *fc, struct user_namespace *user_ns,
void fuse_conn_init(struct fuse_conn *fc, struct fuse_mount *fm,
struct user_namespace *user_ns,
const struct fuse_iqueue_ops *fiq_ops, void *fiq_priv);
/**
......@@ -983,11 +1021,21 @@ void fuse_conn_init(struct fuse_conn *fc, struct user_namespace *user_ns,
*/
void fuse_conn_put(struct fuse_conn *fc);
/**
* Acquire reference to fuse_mount
*/
struct fuse_mount *fuse_mount_get(struct fuse_mount *fm);
/**
* Release reference to fuse_mount
*/
void fuse_mount_put(struct fuse_mount *fm);
struct fuse_dev *fuse_dev_alloc_install(struct fuse_conn *fc);
struct fuse_dev *fuse_dev_alloc(void);
void fuse_dev_install(struct fuse_dev *fud, struct fuse_conn *fc);
void fuse_dev_free(struct fuse_dev *fud);
void fuse_send_init(struct fuse_conn *fc);
void fuse_send_init(struct fuse_mount *fm);
/**
* Fill in superblock and initialize fuse connection
......@@ -996,12 +1044,18 @@ void fuse_send_init(struct fuse_conn *fc);
*/
int fuse_fill_super_common(struct super_block *sb, struct fuse_fs_context *ctx);
/**
* Disassociate fuse connection from superblock and kill the superblock
/*
* Remove the mount from the connection
*
* Calls kill_anon_super(), do not use with bdev mounts.
* Returns whether this was the last mount
*/
bool fuse_mount_remove(struct fuse_mount *fm);
/*
* Shut down the connection (possibly sending DESTROY request).
*/
void fuse_kill_sb_anon(struct super_block *sb);
void fuse_conn_destroy(struct fuse_mount *fm);
/**
* Add connection to control filesystem
......@@ -1036,10 +1090,20 @@ void fuse_flush_writepages(struct inode *inode);
void fuse_set_nowrite(struct inode *inode);
void fuse_release_nowrite(struct inode *inode);
/**
* Scan all fuse_mounts belonging to fc to find the first where
* ilookup5() returns a result. Return that result and the
* respective fuse_mount in *fm (unless fm is NULL).
*
* The caller must hold fc->killsb.
*/
struct inode *fuse_ilookup(struct fuse_conn *fc, u64 nodeid,
struct fuse_mount **fm);
/**
* File-system tells the kernel to invalidate cache for the given node id.
*/
int fuse_reverse_inval_inode(struct super_block *sb, u64 nodeid,
int fuse_reverse_inval_inode(struct fuse_conn *fc, u64 nodeid,
loff_t offset, loff_t len);
/**
......@@ -1052,10 +1116,10 @@ int fuse_reverse_inval_inode(struct super_block *sb, u64 nodeid,
* - is a file or oan empty directory
* then the dentry is unhashed (d_delete()).
*/
int fuse_reverse_inval_entry(struct super_block *sb, u64 parent_nodeid,
int fuse_reverse_inval_entry(struct fuse_conn *fc, u64 parent_nodeid,
u64 child_nodeid, struct qstr *name);
int fuse_do_open(struct fuse_conn *fc, u64 nodeid, struct file *file,
int fuse_do_open(struct fuse_mount *fm, u64 nodeid, struct file *file,
bool isdir);
/**
......
fs/fuse/inode.c
View file @ fcee216b
......@@ -282,7 +282,7 @@ static void fuse_init_inode(struct inode *inode, struct fuse_attr *attr)
BUG();
}
int fuse_inode_eq(struct inode *inode, void *_nodeidp)
static int fuse_inode_eq(struct inode *inode, void *_nodeidp)
{
u64 nodeid = *(u64 *) _nodeidp;
if (get_node_id(inode) == nodeid)
......@@ -334,16 +334,37 @@ struct inode *fuse_iget(struct super_block *sb, u64 nodeid,
return inode;
}
int fuse_reverse_inval_inode(struct super_block *sb, u64 nodeid,
struct inode *fuse_ilookup(struct fuse_conn *fc, u64 nodeid,
struct fuse_mount **fm)
{
struct fuse_mount *fm_iter;
struct inode *inode;
WARN_ON(!rwsem_is_locked(&fc->killsb));
list_for_each_entry(fm_iter, &fc->mounts, fc_entry) {
if (!fm_iter->sb)
continue;
inode = ilookup5(fm_iter->sb, nodeid, fuse_inode_eq, &nodeid);
if (inode) {
if (fm)
*fm = fm_iter;
return inode;
}
}
return NULL;
}
int fuse_reverse_inval_inode(struct fuse_conn *fc, u64 nodeid,
loff_t offset, loff_t len)
{
struct fuse_conn *fc = get_fuse_conn_super(sb);
struct fuse_inode *fi;
struct inode *inode;
pgoff_t pg_start;
pgoff_t pg_end;
inode = ilookup5(sb, nodeid, fuse_inode_eq, &nodeid);
inode = fuse_ilookup(fc, nodeid, NULL);
if (!inode)
return -ENOENT;
......@@ -393,28 +414,23 @@ static void fuse_umount_begin(struct super_block *sb)
fuse_abort_conn(fc);
}
static void fuse_send_destroy(struct fuse_conn *fc)
static void fuse_send_destroy(struct fuse_mount *fm)
{
if (fc->conn_init) {
if (fm->fc->conn_init) {
FUSE_ARGS(args);
args.opcode = FUSE_DESTROY;
args.force = true;
args.nocreds = true;
fuse_simple_request(fc, &args);
fuse_simple_request(fm, &args);
}
}
static void fuse_put_super(struct super_block *sb)
{
struct fuse_conn *fc = get_fuse_conn_super(sb);
struct fuse_mount *fm = get_fuse_mount_super(sb);
mutex_lock(&fuse_mutex);
list_del(&fc->entry);
fuse_ctl_remove_conn(fc);
mutex_unlock(&fuse_mutex);
fuse_conn_put(fc);
fuse_mount_put(fm);
}
static void convert_fuse_statfs(struct kstatfs *stbuf, struct fuse_kstatfs *attr)
......@@ -434,12 +450,12 @@ static void convert_fuse_statfs(struct kstatfs *stbuf, struct fuse_kstatfs *attr
static int fuse_statfs(struct dentry *dentry, struct kstatfs *buf)
{
struct super_block *sb = dentry->d_sb;
struct fuse_conn *fc = get_fuse_conn_super(sb);
struct fuse_mount *fm = get_fuse_mount_super(sb);
FUSE_ARGS(args);
struct fuse_statfs_out outarg;
int err;
if (!fuse_allow_current_process(fc)) {
if (!fuse_allow_current_process(fm->fc)) {
buf->f_type = FUSE_SUPER_MAGIC;
return 0;
}
......@@ -451,7 +467,7 @@ static int fuse_statfs(struct dentry *dentry, struct kstatfs *buf)
args.out_numargs = 1;
args.out_args[0].size = sizeof(outarg);
args.out_args[0].value = &outarg;
err = fuse_simple_request(fc, &args);
err = fuse_simple_request(fm, &args);
if (!err)
convert_fuse_statfs(buf, &outarg.st);
return err;
......@@ -635,7 +651,8 @@ static void fuse_pqueue_init(struct fuse_pqueue *fpq)
fpq->connected = 1;
}
void fuse_conn_init(struct fuse_conn *fc, struct user_namespace *user_ns,
void fuse_conn_init(struct fuse_conn *fc, struct fuse_mount *fm,
struct user_namespace *user_ns,
const struct fuse_iqueue_ops *fiq_ops, void *fiq_priv)
{
memset(fc, 0, sizeof(*fc));
......@@ -662,6 +679,11 @@ void fuse_conn_init(struct fuse_conn *fc, struct user_namespace *user_ns,
fc->pid_ns = get_pid_ns(task_active_pid_ns(current));
fc->user_ns = get_user_ns(user_ns);
fc->max_pages = FUSE_DEFAULT_MAX_PAGES_PER_REQ;
INIT_LIST_HEAD(&fc->mounts);
list_add(&fm->fc_entry, &fc->mounts);
fm->fc = fc;
refcount_set(&fm->count, 1);
}
EXPORT_SYMBOL_GPL(fuse_conn_init);
......@@ -688,6 +710,23 @@ struct fuse_conn *fuse_conn_get(struct fuse_conn *fc)
}
EXPORT_SYMBOL_GPL(fuse_conn_get);
void fuse_mount_put(struct fuse_mount *fm)
{
if (refcount_dec_and_test(&fm->count)) {
if (fm->fc)
fuse_conn_put(fm->fc);
kfree(fm);
}
}
EXPORT_SYMBOL_GPL(fuse_mount_put);
struct fuse_mount *fuse_mount_get(struct fuse_mount *fm)
{
refcount_inc(&fm->count);
return fm;
}
EXPORT_SYMBOL_GPL(fuse_mount_get);
static struct inode *fuse_get_root_inode(struct super_block *sb, unsigned mode)
{
struct fuse_attr attr;
......@@ -917,9 +956,10 @@ struct fuse_init_args {
struct fuse_init_out out;
};
static void process_init_reply(struct fuse_conn *fc, struct fuse_args *args,
static void process_init_reply(struct fuse_mount *fm, struct fuse_args *args,
int error)
{
struct fuse_conn *fc = fm->fc;
struct fuse_init_args *ia = container_of(args, typeof(*ia), args);
struct fuse_init_out *arg = &ia->out;
bool ok = true;
......@@ -973,11 +1013,11 @@ static void process_init_reply(struct fuse_conn *fc, struct fuse_args *args,
if (arg->flags & FUSE_HANDLE_KILLPRIV)
fc->handle_killpriv = 1;
if (arg->time_gran && arg->time_gran <= 1000000000)
fc->sb->s_time_gran = arg->time_gran;
fm->sb->s_time_gran = arg->time_gran;
if ((arg->flags & FUSE_POSIX_ACL)) {
fc->default_permissions = 1;
fc->posix_acl = 1;
fc->sb->s_xattr = fuse_acl_xattr_handlers;
fm->sb->s_xattr = fuse_acl_xattr_handlers;
}
if (arg->flags & FUSE_CACHE_SYMLINKS)
fc->cache_symlinks = 1;
......@@ -999,8 +1039,8 @@ static void process_init_reply(struct fuse_conn *fc, struct fuse_args *args,
fc->no_flock = 1;
}
fc->sb->s_bdi->ra_pages =
min(fc->sb->s_bdi->ra_pages, ra_pages);
fm->sb->s_bdi->ra_pages =
min(fm->sb->s_bdi->ra_pages, ra_pages);
fc->minor = arg->minor;
fc->max_write = arg->minor < 5 ? 4096 : arg->max_write;
fc->max_write = max_t(unsigned, 4096, fc->max_write);
......@@ -1017,7 +1057,7 @@ static void process_init_reply(struct fuse_conn *fc, struct fuse_args *args,
wake_up_all(&fc->blocked_waitq);
}
void fuse_send_init(struct fuse_conn *fc)
void fuse_send_init(struct fuse_mount *fm)
{
struct fuse_init_args *ia;
......@@ -1025,7 +1065,7 @@ void fuse_send_init(struct fuse_conn *fc)
ia->in.major = FUSE_KERNEL_VERSION;
ia->in.minor = FUSE_KERNEL_MINOR_VERSION;
ia->in.max_readahead = fc->sb->s_bdi->ra_pages * PAGE_SIZE;
ia->in.max_readahead = fm->sb->s_bdi->ra_pages * PAGE_SIZE;
ia->in.flags |=
FUSE_ASYNC_READ | FUSE_POSIX_LOCKS | FUSE_ATOMIC_O_TRUNC |
FUSE_EXPORT_SUPPORT | FUSE_BIG_WRITES | FUSE_DONT_MASK |
......@@ -1037,7 +1077,7 @@ void fuse_send_init(struct fuse_conn *fc)
FUSE_ABORT_ERROR | FUSE_MAX_PAGES | FUSE_CACHE_SYMLINKS |
FUSE_NO_OPENDIR_SUPPORT | FUSE_EXPLICIT_INVAL_DATA;
#ifdef CONFIG_FUSE_DAX
if (fc->dax)
if (fm->fc->dax)
ia->in.flags |= FUSE_MAP_ALIGNMENT;
#endif
ia->args.opcode = FUSE_INIT;
......@@ -1055,8 +1095,8 @@ void fuse_send_init(struct fuse_conn *fc)
ia->args.nocreds = true;
ia->args.end = process_init_reply;
if (fuse_simple_background(fc, &ia->args, GFP_KERNEL) != 0)
process_init_reply(fc, &ia->args, -ENOTCONN);
if (fuse_simple_background(fm, &ia->args, GFP_KERNEL) != 0)
process_init_reply(fm, &ia->args, -ENOTCONN);
}
EXPORT_SYMBOL_GPL(fuse_send_init);
......@@ -1170,7 +1210,8 @@ EXPORT_SYMBOL_GPL(fuse_dev_free);
int fuse_fill_super_common(struct super_block *sb, struct fuse_fs_context *ctx)
{
struct fuse_dev *fud = NULL;
struct fuse_conn *fc = get_fuse_conn_super(sb);
struct fuse_mount *fm = get_fuse_mount_super(sb);
struct fuse_conn *fc = fm->fc;
struct inode *root;
struct dentry *root_dentry;
int err;
......@@ -1225,7 +1266,7 @@ int fuse_fill_super_common(struct super_block *sb, struct fuse_fs_context *ctx)
}
fc->dev = sb->s_dev;
fc->sb = sb;
fm->sb = sb;
err = fuse_bdi_init(fc, sb);
if (err)
goto err_dev_free;
......@@ -1290,6 +1331,7 @@ static int fuse_fill_super(struct super_block *sb, struct fs_context *fsc)
struct file *file;
int err;
struct fuse_conn *fc;
struct fuse_mount *fm;
err = -EINVAL;
file = fget(ctx->fd);
......@@ -1310,9 +1352,16 @@ static int fuse_fill_super(struct super_block *sb, struct fs_context *fsc)
if (!fc)
goto err_fput;
fuse_conn_init(fc, sb->s_user_ns, &fuse_dev_fiq_ops, NULL);
fm = kzalloc(sizeof(*fm), GFP_KERNEL);
if (!fm) {
kfree(fc);
goto err_fput;
}
fuse_conn_init(fc, fm, sb->s_user_ns, &fuse_dev_fiq_ops, NULL);
fc->release = fuse_free_conn;
sb->s_fs_info = fc;
sb->s_fs_info = fm;
err = fuse_fill_super_common(sb, ctx);
if (err)
......@@ -1323,11 +1372,11 @@ static int fuse_fill_super(struct super_block *sb, struct fs_context *fsc)
* CPUs after this
*/
fput(file);
fuse_send_init(get_fuse_conn_super(sb));
fuse_send_init(get_fuse_mount_super(sb));
return 0;
err_put_conn:
fuse_conn_put(fc);
fuse_mount_put(fm);
sb->s_fs_info = NULL;
err_fput:
fput(file);
......@@ -1385,29 +1434,45 @@ static int fuse_init_fs_context(struct fs_context *fc)
return 0;
}
static void fuse_sb_destroy(struct super_block *sb)
bool fuse_mount_remove(struct fuse_mount *fm)
{
struct fuse_conn *fc = get_fuse_conn_super(sb);
struct fuse_conn *fc = fm->fc;
bool last = false;
down_write(&fc->killsb);
list_del_init(&fm->fc_entry);
if (list_empty(&fc->mounts))
last = true;
up_write(&fc->killsb);
return last;
}
EXPORT_SYMBOL_GPL(fuse_mount_remove);
void fuse_conn_destroy(struct fuse_mount *fm)
{
struct fuse_conn *fc = fm->fc;
if (fc) {
if (fc->destroy)
fuse_send_destroy(fc);
fuse_send_destroy(fm);
fuse_abort_conn(fc);
fuse_wait_aborted(fc);
down_write(&fc->killsb);
fc->sb = NULL;
up_write(&fc->killsb);
}
}
EXPORT_SYMBOL_GPL(fuse_conn_destroy);
void fuse_kill_sb_anon(struct super_block *sb)
static void fuse_kill_sb_anon(struct super_block *sb)
{
fuse_sb_destroy(sb);
struct fuse_mount *fm = get_fuse_mount_super(sb);
bool last;
if (fm) {
last = fuse_mount_remove(fm);
if (last)
fuse_conn_destroy(fm);
}
kill_anon_super(sb);
}
EXPORT_SYMBOL_GPL(fuse_kill_sb_anon);
static struct file_system_type fuse_fs_type = {
.owner = THIS_MODULE,
......@@ -1422,7 +1487,14 @@ MODULE_ALIAS_FS("fuse");
#ifdef CONFIG_BLOCK
static void fuse_kill_sb_blk(struct super_block *sb)
{
fuse_sb_destroy(sb);
struct fuse_mount *fm = get_fuse_mount_super(sb);
bool last;
if (fm) {
last = fuse_mount_remove(fm);
if (last)
fuse_conn_destroy(fm);
}
kill_block_super(sb);
}
......
fs/fuse/readdir.c
View file @ fcee216b
......@@ -252,7 +252,7 @@ static int fuse_direntplus_link(struct file *file,
static void fuse_force_forget(struct file *file, u64 nodeid)
{
struct inode *inode = file_inode(file);
struct fuse_conn *fc = get_fuse_conn(inode);
struct fuse_mount *fm = get_fuse_mount(inode);
struct fuse_forget_in inarg;
FUSE_ARGS(args);
......@@ -266,7 +266,7 @@ static void fuse_force_forget(struct file *file, u64 nodeid)
args.force = true;
args.noreply = true;
fuse_simple_request(fc, &args);
fuse_simple_request(fm, &args);
/* ignore errors */
}
......@@ -320,7 +320,7 @@ static int fuse_readdir_uncached(struct file *file, struct dir_context *ctx)
ssize_t res;
struct page *page;
struct inode *inode = file_inode(file);
struct fuse_conn *fc = get_fuse_conn(inode);
struct fuse_mount *fm = get_fuse_mount(inode);
struct fuse_io_args ia = {};
struct fuse_args_pages *ap = &ia.ap;
struct fuse_page_desc desc = { .length = PAGE_SIZE };
......@@ -337,7 +337,7 @@ static int fuse_readdir_uncached(struct file *file, struct dir_context *ctx)
ap->pages = &page;
ap->descs = &desc;
if (plus) {
attr_version = fuse_get_attr_version(fc);
attr_version = fuse_get_attr_version(fm->fc);
fuse_read_args_fill(&ia, file, ctx->pos, PAGE_SIZE,
FUSE_READDIRPLUS);
} else {
......@@ -345,7 +345,7 @@ static int fuse_readdir_uncached(struct file *file, struct dir_context *ctx)
FUSE_READDIR);
}
locked = fuse_lock_inode(inode);
res = fuse_simple_request(fc, &ap->args);
res = fuse_simple_request(fm, &ap->args);
fuse_unlock_inode(inode, locked);
if (res >= 0) {
if (!res) {
......
fs/fuse/virtio_fs.c
View file @ fcee216b
......@@ -1270,7 +1270,8 @@ static inline void virtio_fs_ctx_set_defaults(struct fuse_fs_context *ctx)
static int virtio_fs_fill_super(struct super_block *sb, struct fs_context *fsc)
{
struct fuse_conn *fc = get_fuse_conn_super(sb);
struct fuse_mount *fm = get_fuse_mount_super(sb);
struct fuse_conn *fc = fm->fc;
struct virtio_fs *fs = fc->iq.priv;
struct fuse_fs_context *ctx = fsc->fs_private;
unsigned int i;
......@@ -1315,7 +1316,7 @@ static int virtio_fs_fill_super(struct super_block *sb, struct fs_context *fsc)
/* Previous unmount will stop all queues. Start these again */
virtio_fs_start_all_queues(fs);
fuse_send_init(fc);
fuse_send_init(fm);
mutex_unlock(&virtio_fs_mutex);
return 0;
......@@ -1326,21 +1327,14 @@ static int virtio_fs_fill_super(struct super_block *sb, struct fs_context *fsc)
return err;
}
static void virtio_kill_sb(struct super_block *sb)
static void virtio_fs_conn_destroy(struct fuse_mount *fm)
{
struct fuse_conn *fc = get_fuse_conn_super(sb);
struct virtio_fs *vfs;
struct virtio_fs_vq *fsvq;
/* If mount failed, we can still be called without any fc */
if (!fc)
return fuse_kill_sb_anon(sb);
vfs = fc->iq.priv;
fsvq = &vfs->vqs[VQ_HIPRIO];
struct fuse_conn *fc = fm->fc;
struct virtio_fs *vfs = fc->iq.priv;
struct virtio_fs_vq *fsvq = &vfs->vqs[VQ_HIPRIO];
/* Stop dax worker. Soon evict_inodes() will be called which will
* free all memory ranges belonging to all inodes.
/* Stop dax worker. Soon evict_inodes() will be called which
* will free all memory ranges belonging to all inodes.
*/
if (IS_ENABLED(CONFIG_FUSE_DAX))
fuse_dax_cancel_work(fc);
......@@ -1351,9 +1345,9 @@ static void virtio_kill_sb(struct super_block *sb)
spin_unlock(&fsvq->lock);
virtio_fs_drain_all_queues(vfs);
fuse_kill_sb_anon(sb);
fuse_conn_destroy(fm);
/* fuse_kill_sb_anon() must have sent destroy. Stop all queues
/* fuse_conn_destroy() must have sent destroy. Stop all queues
* and drain one more time and free fuse devices. Freeing fuse
* devices will drop their reference on fuse_conn and that in
* turn will drop its reference on virtio_fs object.
......@@ -1363,12 +1357,27 @@ static void virtio_kill_sb(struct super_block *sb)
virtio_fs_free_devs(vfs);
}
static void virtio_kill_sb(struct super_block *sb)
{
struct fuse_mount *fm = get_fuse_mount_super(sb);
bool last;
/* If mount failed, we can still be called without any fc */
if (fm) {
last = fuse_mount_remove(fm);
if (last)
virtio_fs_conn_destroy(fm);
}
kill_anon_super(sb);
}
static int virtio_fs_test_super(struct super_block *sb,
struct fs_context *fsc)
{
struct fuse_conn *fc = fsc->s_fs_info;
struct fuse_mount *fsc_fm = fsc->s_fs_info;
struct fuse_mount *sb_fm = get_fuse_mount_super(sb);
return fc->iq.priv == get_fuse_conn_super(sb)->iq.priv;
return fsc_fm->fc->iq.priv == sb_fm->fc->iq.priv;
}
static int virtio_fs_set_super(struct super_block *sb,
......@@ -1378,7 +1387,7 @@ static int virtio_fs_set_super(struct super_block *sb,
err = get_anon_bdev(&sb->s_dev);
if (!err)
fuse_conn_get(fsc->s_fs_info);
fuse_mount_get(fsc->s_fs_info);
return err;
}
......@@ -1388,6 +1397,7 @@ static int virtio_fs_get_tree(struct fs_context *fsc)
struct virtio_fs *fs;
struct super_block *sb;
struct fuse_conn *fc;
struct fuse_mount *fm;
int err;
/* This gets a reference on virtio_fs object. This ptr gets installed
......@@ -1408,14 +1418,23 @@ static int virtio_fs_get_tree(struct fs_context *fsc)
return -ENOMEM;
}
fuse_conn_init(fc, get_user_ns(current_user_ns()), &virtio_fs_fiq_ops,
fs);
fm = kzalloc(sizeof(struct fuse_mount), GFP_KERNEL);
if (!fm) {
mutex_lock(&virtio_fs_mutex);
virtio_fs_put(fs);
mutex_unlock(&virtio_fs_mutex);
kfree(fc);
return -ENOMEM;
}
fuse_conn_init(fc, fm, get_user_ns(current_user_ns()),
&virtio_fs_fiq_ops, fs);
fc->release = fuse_free_conn;
fc->delete_stale = true;
fsc->s_fs_info = fc;
fsc->s_fs_info = fm;
sb = sget_fc(fsc, virtio_fs_test_super, virtio_fs_set_super);
fuse_conn_put(fc);
fuse_mount_put(fm);
if (IS_ERR(sb))
return PTR_ERR(sb);
......
fs/fuse/xattr.c
View file @ fcee216b
......@@ -14,12 +14,12 @@
int fuse_setxattr(struct inode *inode, const char *name, const void *value,
size_t size, int flags)
{
struct fuse_conn *fc = get_fuse_conn(inode);
struct fuse_mount *fm = get_fuse_mount(inode);
FUSE_ARGS(args);
struct fuse_setxattr_in inarg;
int err;
if (fc->no_setxattr)
if (fm->fc->no_setxattr)
return -EOPNOTSUPP;
memset(&inarg, 0, sizeof(inarg));
......@@ -34,9 +34,9 @@ int fuse_setxattr(struct inode *inode, const char *name, const void *value,
args.in_args[1].value = name;
args.in_args[2].size = size;
args.in_args[2].value = value;
err = fuse_simple_request(fc, &args);
err = fuse_simple_request(fm, &args);
if (err == -ENOSYS) {
fc->no_setxattr = 1;
fm->fc->no_setxattr = 1;
err = -EOPNOTSUPP;
}
if (!err) {
......@@ -49,13 +49,13 @@ int fuse_setxattr(struct inode *inode, const char *name, const void *value,
ssize_t fuse_getxattr(struct inode *inode, const char *name, void *value,
size_t size)
{
struct fuse_conn *fc = get_fuse_conn(inode);
struct fuse_mount *fm = get_fuse_mount(inode);
FUSE_ARGS(args);
struct fuse_getxattr_in inarg;
struct fuse_getxattr_out outarg;
ssize_t ret;
if (fc->no_getxattr)
if (fm->fc->no_getxattr)
return -EOPNOTSUPP;
memset(&inarg, 0, sizeof(inarg));
......@@ -77,11 +77,11 @@ ssize_t fuse_getxattr(struct inode *inode, const char *name, void *value,
args.out_args[0].size = sizeof(outarg);
args.out_args[0].value = &outarg;
}
ret = fuse_simple_request(fc, &args);
ret = fuse_simple_request(fm, &args);
if (!ret && !size)
ret = min_t(ssize_t, outarg.size, XATTR_SIZE_MAX);
if (ret == -ENOSYS) {
fc->no_getxattr = 1;
fm->fc->no_getxattr = 1;
ret = -EOPNOTSUPP;
}
return ret;
......@@ -107,16 +107,16 @@ static int fuse_verify_xattr_list(char *list, size_t size)
ssize_t fuse_listxattr(struct dentry *entry, char *list, size_t size)
{
struct inode *inode = d_inode(entry);
struct fuse_conn *fc = get_fuse_conn(inode);
struct fuse_mount *fm = get_fuse_mount(inode);
FUSE_ARGS(args);
struct fuse_getxattr_in inarg;
struct fuse_getxattr_out outarg;
ssize_t ret;
if (!fuse_allow_current_process(fc))
if (!fuse_allow_current_process(fm->fc))
return -EACCES;
if (fc->no_listxattr)
if (fm->fc->no_listxattr)
return -EOPNOTSUPP;
memset(&inarg, 0, sizeof(inarg));
......@@ -136,13 +136,13 @@ ssize_t fuse_listxattr(struct dentry *entry, char *list, size_t size)
args.out_args[0].size = sizeof(outarg);
args.out_args[0].value = &outarg;
}
ret = fuse_simple_request(fc, &args);
ret = fuse_simple_request(fm, &args);
if (!ret && !size)
ret = min_t(ssize_t, outarg.size, XATTR_LIST_MAX);
if (ret > 0 && size)
ret = fuse_verify_xattr_list(list, ret);
if (ret == -ENOSYS) {
fc->no_listxattr = 1;
fm->fc->no_listxattr = 1;
ret = -EOPNOTSUPP;
}
return ret;
......@@ -150,11 +150,11 @@ ssize_t fuse_listxattr(struct dentry *entry, char *list, size_t size)
int fuse_removexattr(struct inode *inode, const char *name)
{
struct fuse_conn *fc = get_fuse_conn(inode);
struct fuse_mount *fm = get_fuse_mount(inode);
FUSE_ARGS(args);
int err;
if (fc->no_removexattr)
if (fm->fc->no_removexattr)
return -EOPNOTSUPP;
args.opcode = FUSE_REMOVEXATTR;
......@@ -162,9 +162,9 @@ int fuse_removexattr(struct inode *inode, const char *name)
args.in_numargs = 1;
args.in_args[0].size = strlen(name) + 1;
args.in_args[0].value = name;
err = fuse_simple_request(fc, &args);
err = fuse_simple_request(fm, &args);
if (err == -ENOSYS) {
fc->no_removexattr = 1;
fm->fc->no_removexattr = 1;
err = -EOPNOTSUPP;
}
if (!err) {
......
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