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-rw-r--r--fs/smb/client/cached_dir.c170
-rw-r--r--fs/smb/client/cached_dir.h6
-rw-r--r--fs/smb/client/cifsfs.c12
-rw-r--r--fs/smb/client/cifsfs.h4
-rw-r--r--fs/smb/client/cifsglob.h4
-rw-r--r--fs/smb/client/cifsproto.h4
-rw-r--r--fs/smb/client/cifssmb.c15
-rw-r--r--fs/smb/client/connect.c66
-rw-r--r--fs/smb/client/dfs.c193
-rw-r--r--fs/smb/client/dfs_cache.c4
-rw-r--r--fs/smb/client/fs_context.c85
-rw-r--r--fs/smb/client/fs_context.h1
-rw-r--r--fs/smb/client/inode.c4
-rw-r--r--fs/smb/client/reparse.c157
-rw-r--r--fs/smb/client/reparse.h4
-rw-r--r--fs/smb/client/sess.c5
-rw-r--r--fs/smb/client/smb1ops.c4
-rw-r--r--fs/smb/client/smb2file.c21
-rw-r--r--fs/smb/client/smb2inode.c6
-rw-r--r--fs/smb/client/smb2ops.c14
-rw-r--r--fs/smb/client/smb2pdu.c20
-rw-r--r--fs/smb/client/smb2proto.h9
-rw-r--r--fs/smb/client/trace.h3
-rw-r--r--fs/smb/common/smb2pdu.h9
24 files changed, 523 insertions, 297 deletions
diff --git a/fs/smb/client/cached_dir.c b/fs/smb/client/cached_dir.c
index 06eb19dabb0e..fe738623cf1b 100644
--- a/fs/smb/client/cached_dir.c
+++ b/fs/smb/client/cached_dir.c
@@ -17,6 +17,11 @@ static void free_cached_dir(struct cached_fid *cfid);
static void smb2_close_cached_fid(struct kref *ref);
static void cfids_laundromat_worker(struct work_struct *work);
+struct cached_dir_dentry {
+ struct list_head entry;
+ struct dentry *dentry;
+};
+
static struct cached_fid *find_or_create_cached_dir(struct cached_fids *cfids,
const char *path,
bool lookup_only,
@@ -157,15 +162,17 @@ int open_cached_dir(unsigned int xid, struct cifs_tcon *tcon,
const char *npath;
int retries = 0, cur_sleep = 1;
- if (tcon == NULL || tcon->cfids == NULL || tcon->nohandlecache ||
- is_smb1_server(tcon->ses->server) || (dir_cache_timeout == 0))
+ if (cifs_sb->root == NULL)
+ return -ENOENT;
+
+ if (tcon == NULL)
return -EOPNOTSUPP;
ses = tcon->ses;
cfids = tcon->cfids;
- if (cifs_sb->root == NULL)
- return -ENOENT;
+ if (cfids == NULL)
+ return -EOPNOTSUPP;
replay_again:
/* reinitialize for possible replay */
@@ -222,6 +229,7 @@ replay_again:
}
}
cfid->dentry = dentry;
+ cfid->tcon = tcon;
/*
* We do not hold the lock for the open because in case
@@ -293,7 +301,6 @@ replay_again:
}
goto oshr_free;
}
- cfid->tcon = tcon;
cfid->is_open = true;
spin_lock(&cfids->cfid_list_lock);
@@ -389,7 +396,7 @@ int open_cached_dir_by_dentry(struct cifs_tcon *tcon,
struct cached_fids *cfids = tcon->cfids;
if (cfids == NULL)
- return -ENOENT;
+ return -EOPNOTSUPP;
spin_lock(&cfids->cfid_list_lock);
list_for_each_entry(cfid, &cfids->entries, entry) {
@@ -470,7 +477,10 @@ void close_all_cached_dirs(struct cifs_sb_info *cifs_sb)
struct cifs_tcon *tcon;
struct tcon_link *tlink;
struct cached_fids *cfids;
+ struct cached_dir_dentry *tmp_list, *q;
+ LIST_HEAD(entry);
+ spin_lock(&cifs_sb->tlink_tree_lock);
for (node = rb_first(root); node; node = rb_next(node)) {
tlink = rb_entry(node, struct tcon_link, tl_rbnode);
tcon = tlink_tcon(tlink);
@@ -479,11 +489,30 @@ void close_all_cached_dirs(struct cifs_sb_info *cifs_sb)
cfids = tcon->cfids;
if (cfids == NULL)
continue;
+ spin_lock(&cfids->cfid_list_lock);
list_for_each_entry(cfid, &cfids->entries, entry) {
- dput(cfid->dentry);
+ tmp_list = kmalloc(sizeof(*tmp_list), GFP_ATOMIC);
+ if (tmp_list == NULL)
+ break;
+ spin_lock(&cfid->fid_lock);
+ tmp_list->dentry = cfid->dentry;
cfid->dentry = NULL;
+ spin_unlock(&cfid->fid_lock);
+
+ list_add_tail(&tmp_list->entry, &entry);
}
+ spin_unlock(&cfids->cfid_list_lock);
}
+ spin_unlock(&cifs_sb->tlink_tree_lock);
+
+ list_for_each_entry_safe(tmp_list, q, &entry, entry) {
+ list_del(&tmp_list->entry);
+ dput(tmp_list->dentry);
+ kfree(tmp_list);
+ }
+
+ /* Flush any pending work that will drop dentries */
+ flush_workqueue(cfid_put_wq);
}
/*
@@ -494,14 +523,18 @@ void invalidate_all_cached_dirs(struct cifs_tcon *tcon)
{
struct cached_fids *cfids = tcon->cfids;
struct cached_fid *cfid, *q;
- LIST_HEAD(entry);
if (cfids == NULL)
return;
+ /*
+ * Mark all the cfids as closed, and move them to the cfids->dying list.
+ * They'll be cleaned up later by cfids_invalidation_worker. Take
+ * a reference to each cfid during this process.
+ */
spin_lock(&cfids->cfid_list_lock);
list_for_each_entry_safe(cfid, q, &cfids->entries, entry) {
- list_move(&cfid->entry, &entry);
+ list_move(&cfid->entry, &cfids->dying);
cfids->num_entries--;
cfid->is_open = false;
cfid->on_list = false;
@@ -514,26 +547,47 @@ void invalidate_all_cached_dirs(struct cifs_tcon *tcon)
} else
kref_get(&cfid->refcount);
}
+ /*
+ * Queue dropping of the dentries once locks have been dropped
+ */
+ if (!list_empty(&cfids->dying))
+ queue_work(cfid_put_wq, &cfids->invalidation_work);
spin_unlock(&cfids->cfid_list_lock);
-
- list_for_each_entry_safe(cfid, q, &entry, entry) {
- list_del(&cfid->entry);
- cancel_work_sync(&cfid->lease_break);
- /*
- * Drop the ref-count from above, either the lease-ref (if there
- * was one) or the extra one acquired.
- */
- kref_put(&cfid->refcount, smb2_close_cached_fid);
- }
}
static void
-smb2_cached_lease_break(struct work_struct *work)
+cached_dir_offload_close(struct work_struct *work)
{
struct cached_fid *cfid = container_of(work,
- struct cached_fid, lease_break);
+ struct cached_fid, close_work);
+ struct cifs_tcon *tcon = cfid->tcon;
+
+ WARN_ON(cfid->on_list);
kref_put(&cfid->refcount, smb2_close_cached_fid);
+ cifs_put_tcon(tcon, netfs_trace_tcon_ref_put_cached_close);
+}
+
+/*
+ * Release the cached directory's dentry, and then queue work to drop cached
+ * directory itself (closing on server if needed).
+ *
+ * Must be called with a reference to the cached_fid and a reference to the
+ * tcon.
+ */
+static void cached_dir_put_work(struct work_struct *work)
+{
+ struct cached_fid *cfid = container_of(work, struct cached_fid,
+ put_work);
+ struct dentry *dentry;
+
+ spin_lock(&cfid->fid_lock);
+ dentry = cfid->dentry;
+ cfid->dentry = NULL;
+ spin_unlock(&cfid->fid_lock);
+
+ dput(dentry);
+ queue_work(serverclose_wq, &cfid->close_work);
}
int cached_dir_lease_break(struct cifs_tcon *tcon, __u8 lease_key[16])
@@ -560,8 +614,10 @@ int cached_dir_lease_break(struct cifs_tcon *tcon, __u8 lease_key[16])
cfid->on_list = false;
cfids->num_entries--;
- queue_work(cifsiod_wq,
- &cfid->lease_break);
+ ++tcon->tc_count;
+ trace_smb3_tcon_ref(tcon->debug_id, tcon->tc_count,
+ netfs_trace_tcon_ref_get_cached_lease_break);
+ queue_work(cfid_put_wq, &cfid->put_work);
spin_unlock(&cfids->cfid_list_lock);
return true;
}
@@ -583,7 +639,8 @@ static struct cached_fid *init_cached_dir(const char *path)
return NULL;
}
- INIT_WORK(&cfid->lease_break, smb2_cached_lease_break);
+ INIT_WORK(&cfid->close_work, cached_dir_offload_close);
+ INIT_WORK(&cfid->put_work, cached_dir_put_work);
INIT_LIST_HEAD(&cfid->entry);
INIT_LIST_HEAD(&cfid->dirents.entries);
mutex_init(&cfid->dirents.de_mutex);
@@ -596,6 +653,9 @@ static void free_cached_dir(struct cached_fid *cfid)
{
struct cached_dirent *dirent, *q;
+ WARN_ON(work_pending(&cfid->close_work));
+ WARN_ON(work_pending(&cfid->put_work));
+
dput(cfid->dentry);
cfid->dentry = NULL;
@@ -613,10 +673,30 @@ static void free_cached_dir(struct cached_fid *cfid)
kfree(cfid);
}
+static void cfids_invalidation_worker(struct work_struct *work)
+{
+ struct cached_fids *cfids = container_of(work, struct cached_fids,
+ invalidation_work);
+ struct cached_fid *cfid, *q;
+ LIST_HEAD(entry);
+
+ spin_lock(&cfids->cfid_list_lock);
+ /* move cfids->dying to the local list */
+ list_cut_before(&entry, &cfids->dying, &cfids->dying);
+ spin_unlock(&cfids->cfid_list_lock);
+
+ list_for_each_entry_safe(cfid, q, &entry, entry) {
+ list_del(&cfid->entry);
+ /* Drop the ref-count acquired in invalidate_all_cached_dirs */
+ kref_put(&cfid->refcount, smb2_close_cached_fid);
+ }
+}
+
static void cfids_laundromat_worker(struct work_struct *work)
{
struct cached_fids *cfids;
struct cached_fid *cfid, *q;
+ struct dentry *dentry;
LIST_HEAD(entry);
cfids = container_of(work, struct cached_fids, laundromat_work.work);
@@ -642,18 +722,28 @@ static void cfids_laundromat_worker(struct work_struct *work)
list_for_each_entry_safe(cfid, q, &entry, entry) {
list_del(&cfid->entry);
- /*
- * Cancel and wait for the work to finish in case we are racing
- * with it.
- */
- cancel_work_sync(&cfid->lease_break);
- /*
- * Drop the ref-count from above, either the lease-ref (if there
- * was one) or the extra one acquired.
- */
- kref_put(&cfid->refcount, smb2_close_cached_fid);
+
+ spin_lock(&cfid->fid_lock);
+ dentry = cfid->dentry;
+ cfid->dentry = NULL;
+ spin_unlock(&cfid->fid_lock);
+
+ dput(dentry);
+ if (cfid->is_open) {
+ spin_lock(&cifs_tcp_ses_lock);
+ ++cfid->tcon->tc_count;
+ trace_smb3_tcon_ref(cfid->tcon->debug_id, cfid->tcon->tc_count,
+ netfs_trace_tcon_ref_get_cached_laundromat);
+ spin_unlock(&cifs_tcp_ses_lock);
+ queue_work(serverclose_wq, &cfid->close_work);
+ } else
+ /*
+ * Drop the ref-count from above, either the lease-ref (if there
+ * was one) or the extra one acquired.
+ */
+ kref_put(&cfid->refcount, smb2_close_cached_fid);
}
- queue_delayed_work(cifsiod_wq, &cfids->laundromat_work,
+ queue_delayed_work(cfid_put_wq, &cfids->laundromat_work,
dir_cache_timeout * HZ);
}
@@ -666,9 +756,11 @@ struct cached_fids *init_cached_dirs(void)
return NULL;
spin_lock_init(&cfids->cfid_list_lock);
INIT_LIST_HEAD(&cfids->entries);
+ INIT_LIST_HEAD(&cfids->dying);
+ INIT_WORK(&cfids->invalidation_work, cfids_invalidation_worker);
INIT_DELAYED_WORK(&cfids->laundromat_work, cfids_laundromat_worker);
- queue_delayed_work(cifsiod_wq, &cfids->laundromat_work,
+ queue_delayed_work(cfid_put_wq, &cfids->laundromat_work,
dir_cache_timeout * HZ);
return cfids;
@@ -687,6 +779,7 @@ void free_cached_dirs(struct cached_fids *cfids)
return;
cancel_delayed_work_sync(&cfids->laundromat_work);
+ cancel_work_sync(&cfids->invalidation_work);
spin_lock(&cfids->cfid_list_lock);
list_for_each_entry_safe(cfid, q, &cfids->entries, entry) {
@@ -694,6 +787,11 @@ void free_cached_dirs(struct cached_fids *cfids)
cfid->is_open = false;
list_move(&cfid->entry, &entry);
}
+ list_for_each_entry_safe(cfid, q, &cfids->dying, entry) {
+ cfid->on_list = false;
+ cfid->is_open = false;
+ list_move(&cfid->entry, &entry);
+ }
spin_unlock(&cfids->cfid_list_lock);
list_for_each_entry_safe(cfid, q, &entry, entry) {
diff --git a/fs/smb/client/cached_dir.h b/fs/smb/client/cached_dir.h
index 81ba0fd5cc16..1dfe79d947a6 100644
--- a/fs/smb/client/cached_dir.h
+++ b/fs/smb/client/cached_dir.h
@@ -44,7 +44,8 @@ struct cached_fid {
spinlock_t fid_lock;
struct cifs_tcon *tcon;
struct dentry *dentry;
- struct work_struct lease_break;
+ struct work_struct put_work;
+ struct work_struct close_work;
struct smb2_file_all_info file_all_info;
struct cached_dirents dirents;
};
@@ -53,10 +54,13 @@ struct cached_fid {
struct cached_fids {
/* Must be held when:
* - accessing the cfids->entries list
+ * - accessing the cfids->dying list
*/
spinlock_t cfid_list_lock;
int num_entries;
struct list_head entries;
+ struct list_head dying;
+ struct work_struct invalidation_work;
struct delayed_work laundromat_work;
};
diff --git a/fs/smb/client/cifsfs.c b/fs/smb/client/cifsfs.c
index 979853471027..c9f9b6e97964 100644
--- a/fs/smb/client/cifsfs.c
+++ b/fs/smb/client/cifsfs.c
@@ -157,6 +157,7 @@ struct workqueue_struct *fileinfo_put_wq;
struct workqueue_struct *cifsoplockd_wq;
struct workqueue_struct *deferredclose_wq;
struct workqueue_struct *serverclose_wq;
+struct workqueue_struct *cfid_put_wq;
__u32 cifs_lock_secret;
/*
@@ -1920,9 +1921,16 @@ init_cifs(void)
goto out_destroy_deferredclose_wq;
}
+ cfid_put_wq = alloc_workqueue("cfid_put_wq",
+ WQ_FREEZABLE|WQ_MEM_RECLAIM, 0);
+ if (!cfid_put_wq) {
+ rc = -ENOMEM;
+ goto out_destroy_serverclose_wq;
+ }
+
rc = cifs_init_inodecache();
if (rc)
- goto out_destroy_serverclose_wq;
+ goto out_destroy_cfid_put_wq;
rc = cifs_init_netfs();
if (rc)
@@ -1990,6 +1998,8 @@ out_destroy_netfs:
cifs_destroy_netfs();
out_destroy_inodecache:
cifs_destroy_inodecache();
+out_destroy_cfid_put_wq:
+ destroy_workqueue(cfid_put_wq);
out_destroy_serverclose_wq:
destroy_workqueue(serverclose_wq);
out_destroy_deferredclose_wq:
diff --git a/fs/smb/client/cifsfs.h b/fs/smb/client/cifsfs.h
index 71b720dbb2ce..a762dbbbd959 100644
--- a/fs/smb/client/cifsfs.h
+++ b/fs/smb/client/cifsfs.h
@@ -146,6 +146,6 @@ extern const struct export_operations cifs_export_ops;
#endif /* CONFIG_CIFS_NFSD_EXPORT */
/* when changing internal version - update following two lines at same time */
-#define SMB3_PRODUCT_BUILD 51
-#define CIFS_VERSION "2.51"
+#define SMB3_PRODUCT_BUILD 52
+#define CIFS_VERSION "2.52"
#endif /* _CIFSFS_H */
diff --git a/fs/smb/client/cifsglob.h b/fs/smb/client/cifsglob.h
index fc33dfe7e925..6e63abe461fd 100644
--- a/fs/smb/client/cifsglob.h
+++ b/fs/smb/client/cifsglob.h
@@ -594,6 +594,7 @@ struct smb_version_operations {
/* Check for STATUS_NETWORK_NAME_DELETED */
bool (*is_network_name_deleted)(char *buf, struct TCP_Server_Info *srv);
int (*parse_reparse_point)(struct cifs_sb_info *cifs_sb,
+ const char *full_path,
struct kvec *rsp_iov,
struct cifs_open_info_data *data);
int (*create_reparse_symlink)(const unsigned int xid,
@@ -1990,7 +1991,7 @@ require use of the stronger protocol */
* cifsInodeInfo->lock_sem cifsInodeInfo->llist cifs_init_once
* ->can_cache_brlcks
* cifsInodeInfo->deferred_lock cifsInodeInfo->deferred_closes cifsInodeInfo_alloc
- * cached_fid->fid_mutex cifs_tcon->crfid tcon_info_alloc
+ * cached_fids->cfid_list_lock cifs_tcon->cfids->entries init_cached_dirs
* cifsFileInfo->fh_mutex cifsFileInfo cifs_new_fileinfo
* cifsFileInfo->file_info_lock cifsFileInfo->count cifs_new_fileinfo
* ->invalidHandle initiate_cifs_search
@@ -2078,6 +2079,7 @@ extern struct workqueue_struct *fileinfo_put_wq;
extern struct workqueue_struct *cifsoplockd_wq;
extern struct workqueue_struct *deferredclose_wq;
extern struct workqueue_struct *serverclose_wq;
+extern struct workqueue_struct *cfid_put_wq;
extern __u32 cifs_lock_secret;
extern mempool_t *cifs_sm_req_poolp;
diff --git a/fs/smb/client/cifsproto.h b/fs/smb/client/cifsproto.h
index 075985bfb13a..bbaaf16af20f 100644
--- a/fs/smb/client/cifsproto.h
+++ b/fs/smb/client/cifsproto.h
@@ -314,8 +314,7 @@ extern void cifs_move_llist(struct list_head *source, struct list_head *dest);
extern void cifs_free_llist(struct list_head *llist);
extern void cifs_del_lock_waiters(struct cifsLockInfo *lock);
-extern int cifs_tree_connect(const unsigned int xid, struct cifs_tcon *tcon,
- const struct nls_table *nlsc);
+int cifs_tree_connect(const unsigned int xid, struct cifs_tcon *tcon);
extern int cifs_negotiate_protocol(const unsigned int xid,
struct cifs_ses *ses,
@@ -661,6 +660,7 @@ char *extract_hostname(const char *unc);
char *extract_sharename(const char *unc);
int parse_reparse_point(struct reparse_data_buffer *buf,
u32 plen, struct cifs_sb_info *cifs_sb,
+ const char *full_path,
bool unicode, struct cifs_open_info_data *data);
int __cifs_sfu_make_node(unsigned int xid, struct inode *inode,
struct dentry *dentry, struct cifs_tcon *tcon,
diff --git a/fs/smb/client/cifssmb.c b/fs/smb/client/cifssmb.c
index 4858331ee918..bd42a419458e 100644
--- a/fs/smb/client/cifssmb.c
+++ b/fs/smb/client/cifssmb.c
@@ -70,10 +70,9 @@ static struct {
static int
cifs_reconnect_tcon(struct cifs_tcon *tcon, int smb_command)
{
- int rc;
- struct cifs_ses *ses;
struct TCP_Server_Info *server;
- struct nls_table *nls_codepage = NULL;
+ struct cifs_ses *ses;
+ int rc;
/*
* SMBs NegProt, SessSetup, uLogoff do not have tcon yet so check for
@@ -131,8 +130,6 @@ again:
}
spin_unlock(&server->srv_lock);
- nls_codepage = ses->local_nls;
-
/*
* need to prevent multiple threads trying to simultaneously
* reconnect the same SMB session
@@ -156,7 +153,7 @@ again:
rc = cifs_negotiate_protocol(0, ses, server);
if (!rc)
- rc = cifs_setup_session(0, ses, server, nls_codepage);
+ rc = cifs_setup_session(0, ses, server, ses->local_nls);
/* do we need to reconnect tcon? */
if (rc || !tcon->need_reconnect) {
@@ -166,7 +163,7 @@ again:
skip_sess_setup:
cifs_mark_open_files_invalid(tcon);
- rc = cifs_tree_connect(0, tcon, nls_codepage);
+ rc = cifs_tree_connect(0, tcon);
mutex_unlock(&ses->session_mutex);
cifs_dbg(FYI, "reconnect tcon rc = %d\n", rc);
@@ -4320,8 +4317,8 @@ getDFSRetry:
* CIFSGetDFSRefer() may be called from cifs_reconnect_tcon() and thus
* causing an infinite recursion.
*/
- rc = smb_init_no_reconnect(SMB_COM_TRANSACTION2, 15, ses->tcon_ipc,
- (void **)&pSMB, (void **)&pSMBr);
+ rc = smb_init(SMB_COM_TRANSACTION2, 15, ses->tcon_ipc,
+ (void **)&pSMB, (void **)&pSMBr);
if (rc)
return rc;
diff --git a/fs/smb/client/connect.c b/fs/smb/client/connect.c
index 0a97228c06b1..56b3a9eb9b05 100644
--- a/fs/smb/client/connect.c
+++ b/fs/smb/client/connect.c
@@ -1897,11 +1897,35 @@ static int match_session(struct cifs_ses *ses,
CIFS_MAX_USERNAME_LEN))
return 0;
if ((ctx->username && strlen(ctx->username) != 0) &&
- ses->password != NULL &&
- strncmp(ses->password,
- ctx->password ? ctx->password : "",
- CIFS_MAX_PASSWORD_LEN))
- return 0;
+ ses->password != NULL) {
+
+ /* New mount can only share sessions with an existing mount if:
+ * 1. Both password and password2 match, or
+ * 2. password2 of the old mount matches password of the new mount
+ * and password of the old mount matches password2 of the new
+ * mount
+ */
+ if (ses->password2 != NULL && ctx->password2 != NULL) {
+ if (!((strncmp(ses->password, ctx->password ?
+ ctx->password : "", CIFS_MAX_PASSWORD_LEN) == 0 &&
+ strncmp(ses->password2, ctx->password2,
+ CIFS_MAX_PASSWORD_LEN) == 0) ||
+ (strncmp(ses->password, ctx->password2,
+ CIFS_MAX_PASSWORD_LEN) == 0 &&
+ strncmp(ses->password2, ctx->password ?
+ ctx->password : "", CIFS_MAX_PASSWORD_LEN) == 0)))
+ return 0;
+
+ } else if ((ses->password2 == NULL && ctx->password2 != NULL) ||
+ (ses->password2 != NULL && ctx->password2 == NULL)) {
+ return 0;
+
+ } else {
+ if (strncmp(ses->password, ctx->password ?
+ ctx->password : "", CIFS_MAX_PASSWORD_LEN))
+ return 0;
+ }
+ }
}
if (strcmp(ctx->local_nls->charset, ses->local_nls->charset))
@@ -2244,6 +2268,7 @@ struct cifs_ses *
cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb3_fs_context *ctx)
{
int rc = 0;
+ int retries = 0;
unsigned int xid;
struct cifs_ses *ses;
struct sockaddr_in *addr = (struct sockaddr_in *)&server->dstaddr;
@@ -2262,6 +2287,8 @@ cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb3_fs_context *ctx)
cifs_dbg(FYI, "Session needs reconnect\n");
mutex_lock(&ses->session_mutex);
+
+retry_old_session:
rc = cifs_negotiate_protocol(xid, ses, server);
if (rc) {
mutex_unlock(&ses->session_mutex);
@@ -2274,6 +2301,13 @@ cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb3_fs_context *ctx)
rc = cifs_setup_session(xid, ses, server,
ctx->local_nls);
if (rc) {
+ if (((rc == -EACCES) || (rc == -EKEYEXPIRED) ||
+ (rc == -EKEYREVOKED)) && !retries && ses->password2) {
+ retries++;
+ cifs_dbg(FYI, "Session reconnect failed, retrying with alternate password\n");
+ swap(ses->password, ses->password2);
+ goto retry_old_session;
+ }
mutex_unlock(&ses->session_mutex);
/* problem -- put our reference */
cifs_put_smb_ses(ses);
@@ -2369,6 +2403,7 @@ cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb3_fs_context *ctx)
ses->chans_need_reconnect = 1;
spin_unlock(&ses->chan_lock);
+retry_new_session:
mutex_lock(&ses->session_mutex);
rc = cifs_negotiate_protocol(xid, ses, server);
if (!rc)
@@ -2381,8 +2416,16 @@ cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb3_fs_context *ctx)
sizeof(ses->smb3signingkey));
spin_unlock(&ses->chan_lock);
- if (rc)
- goto get_ses_fail;
+ if (rc) {
+ if (((rc == -EACCES) || (rc == -EKEYEXPIRED) ||
+ (rc == -EKEYREVOKED)) && !retries && ses->password2) {
+ retries++;
+ cifs_dbg(FYI, "Session setup failed, retrying with alternate password\n");
+ swap(ses->password, ses->password2);
+ goto retry_new_session;
+ } else
+ goto get_ses_fail;
+ }
/*
* success, put it on the list and add it as first channel
@@ -2571,7 +2614,7 @@ cifs_get_tcon(struct cifs_ses *ses, struct smb3_fs_context *ctx)
if (ses->server->dialect >= SMB20_PROT_ID &&
(ses->server->capabilities & SMB2_GLOBAL_CAP_DIRECTORY_LEASING))
- nohandlecache = ctx->nohandlecache;
+ nohandlecache = ctx->nohandlecache || !dir_cache_timeout;
else
nohandlecache = true;
tcon = tcon_info_alloc(!nohandlecache, netfs_trace_tcon_ref_new);
@@ -4344,10 +4387,10 @@ cifs_prune_tlinks(struct work_struct *work)
}
#ifndef CONFIG_CIFS_DFS_UPCALL
-int cifs_tree_connect(const unsigned int xid, struct cifs_tcon *tcon, const struct nls_table *nlsc)
+int cifs_tree_connect(const unsigned int xid, struct cifs_tcon *tcon)
{
- int rc;
const struct smb_version_operations *ops = tcon->ses->server->ops;
+ int rc;
/* only send once per connect */
spin_lock(&tcon->tc_lock);
@@ -4370,7 +4413,8 @@ int cifs_tree_connect(const unsigned int xid, struct cifs_tcon *tcon, const stru
tcon->status = TID_IN_TCON;
spin_unlock(&tcon->tc_lock);
- rc = ops->tree_connect(xid, tcon->ses, tcon->tree_name, tcon, nlsc);
+ rc = ops->tree_connect(xid, tcon->ses, tcon->tree_name,
+ tcon, tcon->ses->local_nls);
if (rc) {
spin_lock(&tcon->tc_lock);
if (tcon->status == TID_IN_TCON)
diff --git a/fs/smb/client/dfs.c b/fs/smb/client/dfs.c
index 3f6077c68d68..4647df9e1e3b 100644
--- a/fs/smb/client/dfs.c
+++ b/fs/smb/client/dfs.c
@@ -321,49 +321,6 @@ int dfs_mount_share(struct cifs_mount_ctx *mnt_ctx)
return rc;
}
-/* Update dfs referral path of superblock */
-static int update_server_fullpath(struct TCP_Server_Info *server, struct cifs_sb_info *cifs_sb,
- const char *target)
-{
- int rc = 0;
- size_t len = strlen(target);
- char *refpath, *npath;
-
- if (unlikely(len < 2 || *target != '\\'))
- return -EINVAL;
-
- if (target[1] == '\\') {
- len += 1;
- refpath = kmalloc(len, GFP_KERNEL);
- if (!refpath)
- return -ENOMEM;
-
- scnprintf(refpath, len, "%s", target);
- } else {
- len += sizeof("\\");
- refpath = kmalloc(len, GFP_KERNEL);
- if (!refpath)
- return -ENOMEM;
-
- scnprintf(refpath, len, "\\%s", target);
- }
-
- npath = dfs_cache_canonical_path(refpath, cifs_sb->local_nls, cifs_remap(cifs_sb));
- kfree(refpath);
-
- if (IS_ERR(npath)) {
- rc = PTR_ERR(npath);
- } else {
- mutex_lock(&server->refpath_lock);
- spin_lock(&server->srv_lock);
- kfree(server->leaf_fullpath);
- server->leaf_fullpath = npath;
- spin_unlock(&server->srv_lock);
- mutex_unlock(&server->refpath_lock);
- }
- return rc;
-}
-
static int target_share_matches_server(struct TCP_Server_Info *server, char *share,
bool *target_match)
{
@@ -388,77 +345,22 @@ static int target_share_matches_server(struct TCP_Server_Info *server, char *sha
return rc;
}
-static void __tree_connect_ipc(const unsigned int xid, char *tree,
- struct cifs_sb_info *cifs_sb,
- struct cifs_ses *ses)
-{
- struct TCP_Server_Info *server = ses->server;
- struct cifs_tcon *tcon = ses->tcon_ipc;
- int rc;
-
- spin_lock(&ses->ses_lock);
- spin_lock(&ses->chan_lock);
- if (cifs_chan_needs_reconnect(ses, server) ||
- ses->ses_status != SES_GOOD) {
- spin_unlock(&ses->chan_lock);
- spin_unlock(&ses->ses_lock);
- cifs_server_dbg(FYI, "%s: skipping ipc reconnect due to disconnected ses\n",
- __func__);
- return;
- }
- spin_unlock(&ses->chan_lock);
- spin_unlock(&ses->ses_lock);
-
- cifs_server_lock(server);
- scnprintf(tree, MAX_TREE_SIZE, "\\\\%s\\IPC$", server->hostname);
- cifs_server_unlock(server);
-
- rc = server->ops->tree_connect(xid, ses, tree, tcon,
- cifs_sb->local_nls);
- cifs_server_dbg(FYI, "%s: tree_reconnect %s: %d\n", __func__, tree, rc);
- spin_lock(&tcon->tc_lock);
- if (rc) {
- tcon->status = TID_NEED_TCON;
- } else {
- tcon->status = TID_GOOD;
- tcon->need_reconnect = false;
- }
- spin_unlock(&tcon->tc_lock);
-}
-
-static void tree_connect_ipc(const unsigned int xid, char *tree,
- struct cifs_sb_info *cifs_sb,
- struct cifs_tcon *tcon)
-{
- struct cifs_ses *ses = tcon->ses;
-
- __tree_connect_ipc(xid, tree, cifs_sb, ses);
- __tree_connect_ipc(xid, tree, cifs_sb, CIFS_DFS_ROOT_SES(ses));
-}
-
-static int __tree_connect_dfs_target(const unsigned int xid, struct cifs_tcon *tcon,
- struct cifs_sb_info *cifs_sb, char *tree, bool islink,
- struct dfs_cache_tgt_list *tl)
+static int tree_connect_dfs_target(const unsigned int xid,
+ struct cifs_tcon *tcon,
+ struct cifs_sb_info *cifs_sb,
+ char *tree, bool islink,
+ struct dfs_cache_tgt_list *tl)
{
- int rc;
+ const struct smb_version_operations *ops = tcon->ses->server->ops;
struct TCP_Server_Info *server = tcon->ses->server;
- const struct smb_version_operations *ops = server->ops;
- struct cifs_ses *root_ses = CIFS_DFS_ROOT_SES(tcon->ses);
- char *share = NULL, *prefix = NULL;
struct dfs_cache_tgt_iterator *tit;
+ char *share = NULL, *prefix = NULL;
bool target_match;
-
- tit = dfs_cache_get_tgt_iterator(tl);
- if (!tit) {
- rc = -ENOENT;
- goto out;
- }
+ int rc = -ENOENT;
/* Try to tree connect to all dfs targets */
- for (; tit; tit = dfs_cache_get_next_tgt(tl, tit)) {
- const char *target = dfs_cache_get_tgt_name(tit);
- DFS_CACHE_TGT_LIST(ntl);
-
+ for (tit = dfs_cache_get_tgt_iterator(tl);
+ tit; tit = dfs_cache_get_next_tgt(tl, tit)) {
kfree(share);
kfree(prefix);
share = prefix = NULL;
@@ -479,74 +381,21 @@ static int __tree_connect_dfs_target(const unsigned int xid, struct cifs_tcon *t
}
dfs_cache_noreq_update_tgthint(server->leaf_fullpath + 1, tit);
- tree_connect_ipc(xid, tree, cifs_sb, tcon);
-
scnprintf(tree, MAX_TREE_SIZE, "\\%s", share);
- if (!islink) {
- rc = ops->tree_connect(xid, tcon->ses, tree, tcon, cifs_sb->local_nls);
- break;
- }
-
- /*
- * If no dfs referrals were returned from link target, then just do a TREE_CONNECT
- * to it. Otherwise, cache the dfs referral and then mark current tcp ses for
- * reconnect so either the demultiplex thread or the echo worker will reconnect to
- * newly resolved target.
- */
- if (dfs_cache_find(xid, root_ses, cifs_sb->local_nls, cifs_remap(cifs_sb), target,
- NULL, &ntl)) {
- rc = ops->tree_connect(xid, tcon->ses, tree, tcon, cifs_sb->local_nls);
- if (rc)
- continue;
-
+ rc = ops->tree_connect(xid, tcon->ses, tree,
+ tcon, tcon->ses->local_nls);
+ if (islink && !rc && cifs_sb)
rc = cifs_update_super_prepath(cifs_sb, prefix);
- } else {
- /* Target is another dfs share */
- rc = update_server_fullpath(server, cifs_sb, target);
- dfs_cache_free_tgts(tl);
-
- if (!rc) {
- rc = -EREMOTE;
- list_replace_init(&ntl.tl_list, &tl->tl_list);
- } else
- dfs_cache_free_tgts(&ntl);
- }
break;
}
-out:
kfree(share);
kfree(prefix);
-
- return rc;
-}
-
-static int tree_connect_dfs_target(const unsigned int xid, struct cifs_tcon *tcon,
- struct cifs_sb_info *cifs_sb, char *tree, bool islink,
- struct dfs_cache_tgt_list *tl)
-{
- int rc;
- int num_links = 0;
- struct TCP_Server_Info *server = tcon->ses->server;
- char *old_fullpath = server->leaf_fullpath;
-
- do {
- rc = __tree_connect_dfs_target(xid, tcon, cifs_sb, tree, islink, tl);
- if (!rc || rc != -EREMOTE)
- break;
- } while (rc = -ELOOP, ++num_links < MAX_NESTED_LINKS);
- /*
- * If we couldn't tree connect to any targets from last referral path, then
- * retry it from newly resolved dfs referral.
- */
- if (rc && server->leaf_fullpath != old_fullpath)
- cifs_signal_cifsd_for_reconnect(server, true);
-
dfs_cache_free_tgts(tl);
return rc;
}
-int cifs_tree_connect(const unsigned int xid, struct cifs_tcon *tcon, const struct nls_table *nlsc)
+int cifs_tree_connect(const unsigned int xid, struct cifs_tcon *tcon)
{
int rc;
struct TCP_Server_Info *server = tcon->ses->server;
@@ -588,7 +437,8 @@ int cifs_tree_connect(const unsigned int xid, struct cifs_tcon *tcon, const stru
cifs_server_lock(server);
scnprintf(tree, MAX_TREE_SIZE, "\\\\%s\\IPC$", server->hostname);
cifs_server_unlock(server);
- rc = ops->tree_connect(xid, tcon->ses, tree, tcon, nlsc);
+ rc = ops->tree_connect(xid, tcon->ses, tree,
+ tcon, tcon->ses->local_nls);
goto out;
}
@@ -596,14 +446,11 @@ int cifs_tree_connect(const unsigned int xid, struct cifs_tcon *tcon, const stru
if (!IS_ERR(sb))
cifs_sb = CIFS_SB(sb);
- /*
- * Tree connect to last share in @tcon->tree_name whether dfs super or
- * cached dfs referral was not found.
- */
- if (!cifs_sb || !server->leaf_fullpath ||
+ /* Tree connect to last share in @tcon->tree_name if no DFS referral */
+ if (!server->leaf_fullpath ||
dfs_cache_noreq_find(server->leaf_fullpath + 1, &ref, &tl)) {
- rc = ops->tree_connect(xid, tcon->ses, tcon->tree_name, tcon,
- cifs_sb ? cifs_sb->local_nls : nlsc);
+ rc = ops->tree_connect(xid, tcon->ses, tcon->tree_name,
+ tcon, tcon->ses->local_nls);
goto out;
}
diff --git a/fs/smb/client/dfs_cache.c b/fs/smb/client/dfs_cache.c
index 00820f57b434..541608b0267e 100644
--- a/fs/smb/client/dfs_cache.c
+++ b/fs/smb/client/dfs_cache.c
@@ -24,8 +24,8 @@
#include "dfs_cache.h"
-#define CACHE_HTABLE_SIZE 32
-#define CACHE_MAX_ENTRIES 64
+#define CACHE_HTABLE_SIZE 512
+#define CACHE_MAX_ENTRIES 1024
#define CACHE_MIN_TTL 120 /* 2 minutes */
#define CACHE_DEFAULT_TTL 300 /* 5 minutes */
diff --git a/fs/smb/client/fs_context.c b/fs/smb/client/fs_context.c
index c87879e4739b..49123f458d0c 100644
--- a/fs/smb/client/fs_context.c
+++ b/fs/smb/client/fs_context.c
@@ -920,12 +920,37 @@ do { \
cifs_sb->ctx->field = NULL; \
} while (0)
+int smb3_sync_session_ctx_passwords(struct cifs_sb_info *cifs_sb, struct cifs_ses *ses)
+{
+ if (ses->password &&
+ cifs_sb->ctx->password &&
+ strcmp(ses->password, cifs_sb->ctx->password)) {
+ kfree_sensitive(cifs_sb->ctx->password);
+ cifs_sb->ctx->password = kstrdup(ses->password, GFP_KERNEL);
+ if (!cifs_sb->ctx->password)
+ return -ENOMEM;
+ }
+ if (ses->password2 &&
+ cifs_sb->ctx->password2 &&
+ strcmp(ses->password2, cifs_sb->ctx->password2)) {
+ kfree_sensitive(cifs_sb->ctx->password2);
+ cifs_sb->ctx->password2 = kstrdup(ses->password2, GFP_KERNEL);
+ if (!cifs_sb->ctx->password2) {
+ kfree_sensitive(cifs_sb->ctx->password);
+ cifs_sb->ctx->password = NULL;
+ return -ENOMEM;
+ }
+ }
+ return 0;
+}
+
static int smb3_reconfigure(struct fs_context *fc)
{
struct smb3_fs_context *ctx = smb3_fc2context(fc);
struct dentry *root = fc->root;
struct cifs_sb_info *cifs_sb = CIFS_SB(root->d_sb);
struct cifs_ses *ses = cifs_sb_master_tcon(cifs_sb)->ses;
+ char *new_password = NULL, *new_password2 = NULL;
bool need_recon = false;
int rc;
@@ -945,21 +970,63 @@ static int smb3_reconfigure(struct fs_context *fc)
STEAL_STRING(cifs_sb, ctx, UNC);
STEAL_STRING(cifs_sb, ctx, source);
STEAL_STRING(cifs_sb, ctx, username);
+
if (need_recon == false)
STEAL_STRING_SENSITIVE(cifs_sb, ctx, password);
else {
- kfree_sensitive(ses->password);
- ses->password = kstrdup(ctx->password, GFP_KERNEL);
- if (!ses->password)
- return -ENOMEM;
- kfree_sensitive(ses->password2);
- ses->password2 = kstrdup(ctx->password2, GFP_KERNEL);
- if (!ses->password2) {
- kfree_sensitive(ses->password);
- ses->password = NULL;
+ if (ctx->password) {
+ new_password = kstrdup(ctx->password, GFP_KERNEL);
+ if (!new_password)
+ return -ENOMEM;
+ } else
+ STEAL_STRING_SENSITIVE(cifs_sb, ctx, password);
+ }
+
+ /*
+ * if a new password2 has been specified, then reset it's value
+ * inside the ses struct
+ */
+ if (ctx->password2) {
+ new_password2 = kstrdup(ctx->password2, GFP_KERNEL);
+ if (!new_password2) {
+ kfree_sensitive(new_password);
return -ENOMEM;
}
+ } else
+ STEAL_STRING_SENSITIVE(cifs_sb, ctx, password2);
+
+ /*
+ * we may update the passwords in the ses struct below. Make sure we do
+ * not race with smb2_reconnect
+ */
+ mutex_lock(&ses->session_mutex);
+
+ /*
+ * smb2_reconnect may swap password and password2 in case session setup
+ * failed. First get ctx passwords in sync with ses passwords. It should
+ * be okay to do this even if this function were to return an error at a
+ * later stage
+ */
+ rc = smb3_sync_session_ctx_passwords(cifs_sb, ses);
+ if (rc) {
+ mutex_unlock(&ses->session_mutex);
+ return rc;
}
+
+ /*
+ * now that allocations for passwords are done, commit them
+ */
+ if (new_password) {
+ kfree_sensitive(ses->password);
+ ses->password = new_password;
+ }
+ if (new_password2) {
+ kfree_sensitive(ses->password2);
+ ses->password2 = new_password2;
+ }
+
+ mutex_unlock(&ses->session_mutex);
+
STEAL_STRING(cifs_sb, ctx, domainname);
STEAL_STRING(cifs_sb, ctx, nodename);
STEAL_STRING(cifs_sb, ctx, iocharset);
diff --git a/fs/smb/client/fs_context.h b/fs/smb/client/fs_context.h
index 67b7fc48ac58..ac6baa774ad3 100644
--- a/fs/smb/client/fs_context.h
+++ b/fs/smb/client/fs_context.h
@@ -309,6 +309,7 @@ static inline struct smb3_fs_context *smb3_fc2context(const struct fs_context *f
}
extern int smb3_fs_context_dup(struct smb3_fs_context *new_ctx, struct smb3_fs_context *ctx);
+extern int smb3_sync_session_ctx_passwords(struct cifs_sb_info *cifs_sb, struct cifs_ses *ses);
extern void smb3_update_mnt_flags(struct cifs_sb_info *cifs_sb);
/*
diff --git a/fs/smb/client/inode.c b/fs/smb/client/inode.c
index de8063b44072..42c030687918 100644
--- a/fs/smb/client/inode.c
+++ b/fs/smb/client/inode.c
@@ -1137,6 +1137,7 @@ static int reparse_info_to_fattr(struct cifs_open_info_data *data,
rc = 0;
} else if (iov && server->ops->parse_reparse_point) {
rc = server->ops->parse_reparse_point(cifs_sb,
+ full_path,
iov, data);
}
break;
@@ -2495,13 +2496,10 @@ cifs_dentry_needs_reval(struct dentry *dentry)
return true;
if (!open_cached_dir_by_dentry(tcon, dentry->d_parent, &cfid)) {
- spin_lock(&cfid->fid_lock);
if (cfid->time && cifs_i->time > cfid->time) {
- spin_unlock(&cfid->fid_lock);
close_cached_dir(cfid);
return false;
}
- spin_unlock(&cfid->fid_lock);
close_cached_dir(cfid);
}
/*
diff --git a/fs/smb/client/reparse.c b/fs/smb/client/reparse.c
index 90da1e2b6217..e81d2d78ddb7 100644
--- a/fs/smb/client/reparse.c
+++ b/fs/smb/client/reparse.c
@@ -378,8 +378,8 @@ static int wsl_set_xattrs(struct inode *inode, umode_t _mode,
memset(iov, 0, sizeof(*iov));
- /* Exclude $LXDEV xattr for sockets and fifos */
- if (S_ISSOCK(_mode) || S_ISFIFO(_mode))
+ /* Exclude $LXDEV xattr for non-device files */
+ if (!S_ISBLK(_mode) && !S_ISCHR(_mode))
num_xattrs = ARRAY_SIZE(xattrs) - 1;
else
num_xattrs = ARRAY_SIZE(xattrs);
@@ -535,9 +535,95 @@ static int parse_reparse_posix(struct reparse_posix_data *buf,
return 0;
}
+int smb2_parse_native_symlink(char **target, const char *buf, unsigned int len,
+ bool unicode, bool relative,
+ const char *full_path,
+ struct cifs_sb_info *cifs_sb)
+{
+ char sep = CIFS_DIR_SEP(cifs_sb);
+ char *linux_target = NULL;
+ char *smb_target = NULL;
+ int levels;
+ int rc;
+ int i;
+
+ /* Check that length it valid for unicode/non-unicode mode */
+ if (!len || (unicode && (len % 2))) {
+ cifs_dbg(VFS, "srv returned malformed symlink buffer\n");
+ rc = -EIO;
+ goto out;
+ }
+
+ /*
+ * Check that buffer does not contain UTF-16 null codepoint in unicode
+ * mode or null byte in non-unicode mode because Linux cannot process
+ * symlink with null byte.
+ */
+ if ((unicode && UniStrnlen((wchar_t *)buf, len/2) != len/2) ||
+ (!unicode && strnlen(buf, len) != len)) {
+ cifs_dbg(VFS, "srv returned null byte in native symlink target location\n");
+ rc = -EIO;
+ goto out;
+ }
+
+ smb_target = cifs_strndup_from_utf16(buf, len, unicode, cifs_sb->local_nls);
+ if (!smb_target) {
+ rc = -ENOMEM;
+ goto out;
+ }
+
+ if (smb_target[0] == sep && relative) {
+ /*
+ * This is a relative SMB symlink from the top of the share,
+ * which is the top level directory of the Linux mount point.
+ * Linux does not support such relative symlinks, so convert
+ * it to the relative symlink from the current directory.
+ * full_path is the SMB path to the symlink (from which is
+ * extracted current directory) and smb_target is the SMB path
+ * where symlink points, therefore full_path must always be on
+ * the SMB share.
+ */
+ int smb_target_len = strlen(smb_target)+1;
+ levels = 0;
+ for (i = 1; full_path[i]; i++) { /* i=1 to skip leading sep */
+ if (full_path[i] == sep)
+ levels++;
+ }
+ linux_target = kmalloc(levels*3 + smb_target_len, GFP_KERNEL);
+ if (!linux_target) {
+ rc = -ENOMEM;
+ goto out;
+ }
+ for (i = 0; i < levels; i++) {
+ linux_target[i*3 + 0] = '.';
+ linux_target[i*3 + 1] = '.';
+ linux_target[i*3 + 2] = sep;
+ }
+ memcpy(linux_target + levels*3, smb_target+1, smb_target_len); /* +1 to skip leading sep */
+ } else {
+ linux_target = smb_target;
+ smb_target = NULL;
+ }
+
+ if (sep == '\\')
+ convert_delimiter(linux_target, '/');
+
+ rc = 0;
+ *target = linux_target;
+
+ cifs_dbg(FYI, "%s: symlink target: %s\n", __func__, *target);
+
+out:
+ if (rc != 0)
+ kfree(linux_target);
+ kfree(smb_target);
+ return rc;
+}
+
static int parse_reparse_symlink(struct reparse_symlink_data_buffer *sym,
u32 plen, bool unicode,
struct cifs_sb_info *cifs_sb,
+ const char *full_path,
struct cifs_open_info_data *data)
{
unsigned int len;
@@ -552,20 +638,64 @@ static int parse_reparse_symlink(struct reparse_symlink_data_buffer *sym,
return -EIO;
}
- data->symlink_target = cifs_strndup_from_utf16(sym->PathBuffer + offs,
- len, unicode,
+ return smb2_parse_native_symlink(&data->symlink_target,
+ sym->PathBuffer + offs,
+ len,
+ unicode,
+ le32_to_cpu(sym->Flags) & SYMLINK_FLAG_RELATIVE,
+ full_path,
+ cifs_sb);
+}
+
+static int parse_reparse_wsl_symlink(struct reparse_wsl_symlink_data_buffer *buf,
+ struct cifs_sb_info *cifs_sb,
+ struct cifs_open_info_data *data)
+{
+ int len = le16_to_cpu(buf->ReparseDataLength);
+ int symname_utf8_len;
+ __le16 *symname_utf16;
+ int symname_utf16_len;
+
+ if (len <= sizeof(buf->Flags)) {
+ cifs_dbg(VFS, "srv returned malformed wsl symlink buffer\n");
+ return -EIO;
+ }
+
+ /* PathBuffer is in UTF-8 but without trailing null-term byte */
+ symname_utf8_len = len - sizeof(buf->Flags);
+ /*
+ * Check that buffer does not contain null byte
+ * because Linux cannot process symlink with null byte.
+ */
+ if (strnlen(buf->PathBuffer, symname_utf8_len) != symname_utf8_len) {
+ cifs_dbg(VFS, "srv returned null byte in wsl symlink target location\n");
+ return -EIO;
+ }
+ symname_utf16 = kzalloc(symname_utf8_len * 2, GFP_KERNEL);
+ if (!symname_utf16)
+ return -ENOMEM;
+ symname_utf16_len = utf8s_to_utf16s(buf->PathBuffer, symname_utf8_len,
+ UTF16_LITTLE_ENDIAN,
+ symname_utf16, symname_utf8_len * 2);
+ if (symname_utf16_len < 0) {
+ kfree(symname_utf16);
+ return symname_utf16_len;
+ }
+ symname_utf16_len *= 2; /* utf8s_to_utf16s() returns number of u16 items, not byte length */
+
+ data->symlink_target = cifs_strndup_from_utf16((u8 *)symname_utf16,
+ symname_utf16_len, true,
cifs_sb->local_nls);
+ kfree(symname_utf16);
if (!data->symlink_target)
return -ENOMEM;
- convert_delimiter(data->symlink_target, '/');
- cifs_dbg(FYI, "%s: target path: %s\n", __func__, data->symlink_target);
-
return 0;
}
int parse_reparse_point(struct reparse_data_buffer *buf,
u32 plen, struct cifs_sb_info *cifs_sb,
+ const char *full_path,
bool unicode, struct cifs_open_info_data *data)
{
struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb);
@@ -580,12 +710,20 @@ int parse_reparse_point(struct reparse_data_buffer *buf,
case IO_REPARSE_TAG_SYMLINK:
return parse_reparse_symlink(
(struct reparse_symlink_data_buffer *)buf,
- plen, unicode, cifs_sb, data);
+ plen, unicode, cifs_sb, full_path, data);
case IO_REPARSE_TAG_LX_SYMLINK:
+ return parse_reparse_wsl_symlink(
+ (struct reparse_wsl_symlink_data_buffer *)buf,
+ cifs_sb, data);
case IO_REPARSE_TAG_AF_UNIX:
case IO_REPARSE_TAG_LX_FIFO:
case IO_REPARSE_TAG_LX_CHR:
case IO_REPARSE_TAG_LX_BLK:
+ if (le16_to_cpu(buf->ReparseDataLength) != 0) {
+ cifs_dbg(VFS, "srv returned malformed buffer for reparse point: 0x%08x\n",
+ le32_to_cpu(buf->ReparseTag));
+ return -EIO;
+ }
break;
default:
cifs_tcon_dbg(VFS | ONCE, "unhandled reparse tag: 0x%08x\n",
@@ -596,6 +734,7 @@ int parse_reparse_point(struct reparse_data_buffer *buf,
}
int smb2_parse_reparse_point(struct cifs_sb_info *cifs_sb,
+ const char *full_path,
struct kvec *rsp_iov,
struct cifs_open_info_data *data)
{
@@ -605,7 +744,7 @@ int smb2_parse_reparse_point(struct cifs_sb_info *cifs_sb,
buf = (struct reparse_data_buffer *)((u8 *)io +
le32_to_cpu(io->OutputOffset));
- return parse_reparse_point(buf, plen, cifs_sb, true, data);
+ return parse_reparse_point(buf, plen, cifs_sb, full_path, true, data);
}
static void wsl_to_fattr(struct cifs_open_info_data *data,
diff --git a/fs/smb/client/reparse.h b/fs/smb/client/reparse.h
index 2a9f4f9f79de..ff05b0e75c92 100644
--- a/fs/smb/client/reparse.h
+++ b/fs/smb/client/reparse.h
@@ -117,7 +117,9 @@ int smb2_create_reparse_symlink(const unsigned int xid, struct inode *inode,
int smb2_mknod_reparse(unsigned int xid, struct inode *inode,
struct dentry *dentry, struct cifs_tcon *tcon,
const char *full_path, umode_t mode, dev_t dev);
-int smb2_parse_reparse_point(struct cifs_sb_info *cifs_sb, struct kvec *rsp_iov,
+int smb2_parse_reparse_point(struct cifs_sb_info *cifs_sb,
+ const char *full_path,
+ struct kvec *rsp_iov,
struct cifs_open_info_data *data);
#endif /* _CIFS_REPARSE_H */
diff --git a/fs/smb/client/sess.c b/fs/smb/client/sess.c
index c88e9657f47a..0bb77f9ec686 100644
--- a/fs/smb/client/sess.c
+++ b/fs/smb/client/sess.c
@@ -347,10 +347,7 @@ done:
spin_unlock(&ses->chan_lock);
}
-/*
- * update the iface for the channel if necessary.
- * Must be called with chan_lock held.
- */
+/* update the iface for the channel if necessary. */
void
cifs_chan_update_iface(struct cifs_ses *ses, struct TCP_Server_Info *server)
{
diff --git a/fs/smb/client/smb1ops.c b/fs/smb/client/smb1ops.c
index 9a6ece66c4d3..db3695eddcf9 100644
--- a/fs/smb/client/smb1ops.c
+++ b/fs/smb/client/smb1ops.c
@@ -994,17 +994,17 @@ static int cifs_query_symlink(const unsigned int xid,
}
static int cifs_parse_reparse_point(struct cifs_sb_info *cifs_sb,
+ const char *full_path,
struct kvec *rsp_iov,
struct cifs_open_info_data *data)
{
struct reparse_data_buffer *buf;
TRANSACT_IOCTL_RSP *io = rsp_iov->iov_base;
- bool unicode = !!(io->hdr.Flags2 & SMBFLG2_UNICODE);
u32 plen = le16_to_cpu(io->ByteCount);
buf = (struct reparse_data_buffer *)((__u8 *)&io->hdr.Protocol +
le32_to_cpu(io->DataOffset));
- return parse_reparse_point(buf, plen, cifs_sb, unicode, data);
+ return parse_reparse_point(buf, plen, cifs_sb, full_path, true, data);
}
static bool
diff --git a/fs/smb/client/smb2file.c b/fs/smb/client/smb2file.c
index e301349b0078..e836bc2193dd 100644
--- a/fs/smb/client/smb2file.c
+++ b/fs/smb/client/smb2file.c
@@ -63,12 +63,12 @@ static struct smb2_symlink_err_rsp *symlink_data(const struct kvec *iov)
return sym;
}
-int smb2_parse_symlink_response(struct cifs_sb_info *cifs_sb, const struct kvec *iov, char **path)
+int smb2_parse_symlink_response(struct cifs_sb_info *cifs_sb, const struct kvec *iov,
+ const char *full_path, char **path)
{
struct smb2_symlink_err_rsp *sym;
unsigned int sub_offs, sub_len;
unsigned int print_offs, print_len;
- char *s;
if (!cifs_sb || !iov || !iov->iov_base || !iov->iov_len || !path)
return -EINVAL;
@@ -86,15 +86,13 @@ int smb2_parse_symlink_response(struct cifs_sb_info *cifs_sb, const struct kvec
iov->iov_len < SMB2_SYMLINK_STRUCT_SIZE + print_offs + print_len)
return -EINVAL;
- s = cifs_strndup_from_utf16((char *)sym->PathBuffer + sub_offs, sub_len, true,
- cifs_sb->local_nls);
- if (!s)
- return -ENOMEM;
- convert_delimiter(s, '/');
- cifs_dbg(FYI, "%s: symlink target: %s\n", __func__, s);
-
- *path = s;
- return 0;
+ return smb2_parse_native_symlink(path,
+ (char *)sym->PathBuffer + sub_offs,
+ sub_len,
+ true,
+ le32_to_cpu(sym->Flags) & SYMLINK_FLAG_RELATIVE,
+ full_path,
+ cifs_sb);
}
int smb2_open_file(const unsigned int xid, struct cifs_open_parms *oparms, __u32 *oplock, void *buf)
@@ -126,6 +124,7 @@ int smb2_open_file(const unsigned int xid, struct cifs_open_parms *oparms, __u32
goto out;
if (hdr->Status == STATUS_STOPPED_ON_SYMLINK) {
rc = smb2_parse_symlink_response(oparms->cifs_sb, &err_iov,
+ oparms->path,
&data->symlink_target);
if (!rc) {
memset(smb2_data, 0, sizeof(*smb2_data));
diff --git a/fs/smb/client/smb2inode.c b/fs/smb/client/smb2inode.c
index e49d0c25eb03..a188908914fe 100644
--- a/fs/smb/client/smb2inode.c
+++ b/fs/smb/client/smb2inode.c
@@ -828,6 +828,7 @@ finished:
static int parse_create_response(struct cifs_open_info_data *data,
struct cifs_sb_info *cifs_sb,
+ const char *full_path,
const struct kvec *iov)
{
struct smb2_create_rsp *rsp = iov->iov_base;
@@ -841,6 +842,7 @@ static int parse_create_response(struct cifs_open_info_data *data,
break;
case STATUS_STOPPED_ON_SYMLINK:
rc = smb2_parse_symlink_response(cifs_sb, iov,
+ full_path,
&data->symlink_target);
if (rc)
return rc;
@@ -930,14 +932,14 @@ int smb2_query_path_info(const unsigned int xid,
switch (rc) {
case 0:
- rc = parse_create_response(data, cifs_sb, &out_iov[0]);
+ rc = parse_create_response(data, cifs_sb, full_path, &out_iov[0]);
break;
case -EOPNOTSUPP:
/*
* BB TODO: When support for special files added to Samba
* re-verify this path.
*/
- rc = parse_create_response(data, cifs_sb, &out_iov[0]);
+ rc = parse_create_response(data, cifs_sb, full_path, &out_iov[0]);
if (rc || !data->reparse_point)
goto out;
diff --git a/fs/smb/client/smb2ops.c b/fs/smb/client/smb2ops.c
index fa96ebed8310..87cb1872db28 100644
--- a/fs/smb/client/smb2ops.c
+++ b/fs/smb/client/smb2ops.c
@@ -2932,7 +2932,7 @@ smb2_get_dfs_refer(const unsigned int xid, struct cifs_ses *ses,
struct fsctl_get_dfs_referral_req *dfs_req = NULL;
struct get_dfs_referral_rsp *dfs_rsp = NULL;
u32 dfs_req_size = 0, dfs_rsp_size = 0;
- int retry_count = 0;
+ int retry_once = 0;
cifs_dbg(FYI, "%s: path: %s\n", __func__, search_name);
@@ -2981,21 +2981,25 @@ smb2_get_dfs_refer(const unsigned int xid, struct cifs_ses *ses,
/* Path to resolve in an UTF-16 null-terminated string */
memcpy(dfs_req->RequestFileName, utf16_path, utf16_path_len);
- do {
+ for (;;) {
rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
FSCTL_DFS_GET_REFERRALS,
(char *)dfs_req, dfs_req_size, CIFSMaxBufSize,
(char **)&dfs_rsp, &dfs_rsp_size);
- if (!is_retryable_error(rc))
+ if (fatal_signal_pending(current)) {
+ rc = -EINTR;
+ break;
+ }
+ if (!is_retryable_error(rc) || retry_once++)
break;
usleep_range(512, 2048);
- } while (++retry_count < 5);
+ }
if (!rc && !dfs_rsp)
rc = -EIO;
if (rc) {
if (!is_retryable_error(rc) && rc != -ENOENT && rc != -EOPNOTSUPP)
- cifs_tcon_dbg(VFS, "%s: ioctl error: rc=%d\n", __func__, rc);
+ cifs_tcon_dbg(FYI, "%s: ioctl error: rc=%d\n", __func__, rc);
goto out;
}
diff --git a/fs/smb/client/smb2pdu.c b/fs/smb/client/smb2pdu.c
index 055236835537..010eae9d6c47 100644
--- a/fs/smb/client/smb2pdu.c
+++ b/fs/smb/client/smb2pdu.c
@@ -216,10 +216,9 @@ static int
smb2_reconnect(__le16 smb2_command, struct cifs_tcon *tcon,
struct TCP_Server_Info *server, bool from_reconnect)
{
- int rc = 0;
- struct nls_table *nls_codepage = NULL;
struct cifs_ses *ses;
int xid;
+ int rc = 0;
/*
* SMB2s NegProt, SessSetup, Logoff do not have tcon yet so
@@ -229,11 +228,7 @@ smb2_reconnect(__le16 smb2_command, struct cifs_tcon *tcon,
if (tcon == NULL)
return 0;
- /*
- * Need to also skip SMB2_IOCTL because it is used for checking nested dfs links in
- * cifs_tree_connect().
- */
- if (smb2_command == SMB2_TREE_CONNECT || smb2_command == SMB2_IOCTL)
+ if (smb2_command == SMB2_TREE_CONNECT)
return 0;
spin_lock(&tcon->tc_lock);
@@ -334,8 +329,6 @@ again:
}
spin_unlock(&server->srv_lock);
- nls_codepage = ses->local_nls;
-
/*
* need to prevent multiple threads trying to simultaneously
* reconnect the same SMB session
@@ -372,7 +365,7 @@ again:
}
}
- rc = cifs_setup_session(0, ses, server, nls_codepage);
+ rc = cifs_setup_session(0, ses, server, ses->local_nls);
if ((rc == -EACCES) || (rc == -EKEYEXPIRED) || (rc == -EKEYREVOKED)) {
/*
* Try alternate password for next reconnect (key rotation
@@ -406,7 +399,7 @@ skip_sess_setup:
if (tcon->use_persistent)
tcon->need_reopen_files = true;
- rc = cifs_tree_connect(0, tcon, nls_codepage);
+ rc = cifs_tree_connect(0, tcon);
cifs_dbg(FYI, "reconnect tcon rc = %d\n", rc);
if (rc) {
@@ -494,6 +487,7 @@ out:
case SMB2_CHANGE_NOTIFY:
case SMB2_QUERY_INFO:
case SMB2_SET_INFO:
+ case SMB2_IOCTL:
rc = -EAGAIN;
}
failed:
@@ -1231,7 +1225,9 @@ SMB2_negotiate(const unsigned int xid,
* SMB3.0 supports only 1 cipher and doesn't have a encryption neg context
* Set the cipher type manually.
*/
- if (server->dialect == SMB30_PROT_ID && (server->capabilities & SMB2_GLOBAL_CAP_ENCRYPTION))
+ if ((server->dialect == SMB30_PROT_ID ||
+ server->dialect == SMB302_PROT_ID) &&
+ (server->capabilities & SMB2_GLOBAL_CAP_ENCRYPTION))
server->cipher_type = SMB2_ENCRYPTION_AES128_CCM;
security_blob = smb2_get_data_area_len(&blob_offset, &blob_length,
diff --git a/fs/smb/client/smb2proto.h b/fs/smb/client/smb2proto.h
index 71504b30909e..09349fa8da03 100644
--- a/fs/smb/client/smb2proto.h
+++ b/fs/smb/client/smb2proto.h
@@ -111,7 +111,14 @@ extern int smb3_query_mf_symlink(unsigned int xid, struct cifs_tcon *tcon,
struct cifs_sb_info *cifs_sb,
const unsigned char *path, char *pbuf,
unsigned int *pbytes_read);
-int smb2_parse_symlink_response(struct cifs_sb_info *cifs_sb, const struct kvec *iov, char **path);
+int smb2_parse_native_symlink(char **target, const char *buf, unsigned int len,
+ bool unicode, bool relative,
+ const char *full_path,
+ struct cifs_sb_info *cifs_sb);
+int smb2_parse_symlink_response(struct cifs_sb_info *cifs_sb,
+ const struct kvec *iov,
+ const char *full_path,
+ char **path);
int smb2_open_file(const unsigned int xid, struct cifs_open_parms *oparms, __u32 *oplock,
void *buf);
extern int smb2_unlock_range(struct cifsFileInfo *cfile,
diff --git a/fs/smb/client/trace.h b/fs/smb/client/trace.h
index 0b52d22a91a0..12cbd3428a6d 100644
--- a/fs/smb/client/trace.h
+++ b/fs/smb/client/trace.h
@@ -44,6 +44,8 @@
EM(netfs_trace_tcon_ref_free_ipc, "FRE Ipc ") \
EM(netfs_trace_tcon_ref_free_ipc_fail, "FRE Ipc-F ") \
EM(netfs_trace_tcon_ref_free_reconnect_server, "FRE Reconn") \
+ EM(netfs_trace_tcon_ref_get_cached_laundromat, "GET Ch-Lau") \
+ EM(netfs_trace_tcon_ref_get_cached_lease_break, "GET Ch-Lea") \
EM(netfs_trace_tcon_ref_get_cancelled_close, "GET Cn-Cls") \
EM(netfs_trace_tcon_ref_get_dfs_refer, "GET DfsRef") \
EM(netfs_trace_tcon_ref_get_find, "GET Find ") \
@@ -52,6 +54,7 @@
EM(netfs_trace_tcon_ref_new, "NEW ") \
EM(netfs_trace_tcon_ref_new_ipc, "NEW Ipc ") \
EM(netfs_trace_tcon_ref_new_reconnect_server, "NEW Reconn") \
+ EM(netfs_trace_tcon_ref_put_cached_close, "PUT Ch-Cls") \
EM(netfs_trace_tcon_ref_put_cancelled_close, "PUT Cn-Cls") \
EM(netfs_trace_tcon_ref_put_cancelled_close_fid, "PUT Cn-Fid") \
EM(netfs_trace_tcon_ref_put_cancelled_mid, "PUT Cn-Mid") \
diff --git a/fs/smb/common/smb2pdu.h b/fs/smb/common/smb2pdu.h
index 9f272cc8f566..3c7c706c797d 100644
--- a/fs/smb/common/smb2pdu.h
+++ b/fs/smb/common/smb2pdu.h
@@ -1552,6 +1552,15 @@ struct reparse_symlink_data_buffer {
/* See MS-FSCC 2.1.2.6 and cifspdu.h for struct reparse_posix_data */
+/* For IO_REPARSE_TAG_LX_SYMLINK */
+struct reparse_wsl_symlink_data_buffer {
+ __le32 ReparseTag;
+ __le16 ReparseDataLength;
+ __u16 Reserved;
+ __le32 Flags;
+ __u8 PathBuffer[]; /* Variable Length UTF-8 string without nul-term */
+} __packed;
+
struct validate_negotiate_info_req {
__le32 Capabilities;
__u8 Guid[SMB2_CLIENT_GUID_SIZE];
generated by cgit v1.2.3-70-g09d2 (git 2.47.1) at 2024-12-25 07:18:57 +0000