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-rw-r--r--fs/cifs/cifs_debug.c5
-rw-r--r--fs/cifs/cifs_dfs_ref.c99
-rw-r--r--fs/cifs/cifsacl.c4
-rw-r--r--fs/cifs/cifsfs.c6
-rw-r--r--fs/cifs/cifsglob.h7
-rw-r--r--fs/cifs/cifsproto.h1
-rw-r--r--fs/cifs/cifssmb.c2
-rw-r--r--fs/cifs/connect.c151
-rw-r--r--fs/cifs/dfs_cache.c5
-rw-r--r--fs/cifs/dir.c1
-rw-r--r--fs/cifs/file.c42
-rw-r--r--fs/cifs/inode.c42
-rw-r--r--fs/cifs/netmisc.c4
-rw-r--r--fs/cifs/smb2file.c4
-rw-r--r--fs/cifs/smb2misc.c139
-rw-r--r--fs/cifs/smb2ops.c71
-rw-r--r--fs/cifs/smb2pdu.c78
-rw-r--r--fs/cifs/smb2pdu.h1
-rw-r--r--fs/cifs/smb2proto.h3
-rw-r--r--fs/cifs/smb2transport.c2
-rw-r--r--fs/cifs/smbdirect.c36
-rw-r--r--fs/cifs/transport.c92
22 files changed, 539 insertions, 256 deletions
diff --git a/fs/cifs/cifs_debug.c b/fs/cifs/cifs_debug.c
index ec933fb0b36e..e6247b124e63 100644
--- a/fs/cifs/cifs_debug.c
+++ b/fs/cifs/cifs_debug.c
@@ -258,6 +258,11 @@ static int cifs_debug_data_proc_show(struct seq_file *m, void *v)
if (!server->rdma)
goto skip_rdma;
+ if (!server->smbd_conn) {
+ seq_printf(m, "\nSMBDirect transport not available");
+ goto skip_rdma;
+ }
+
seq_printf(m, "\nSMBDirect (in hex) protocol version: %x "
"transport status: %x",
server->smbd_conn->protocol,
diff --git a/fs/cifs/cifs_dfs_ref.c b/fs/cifs/cifs_dfs_ref.c
index 41957b82d796..cc3ada12848d 100644
--- a/fs/cifs/cifs_dfs_ref.c
+++ b/fs/cifs/cifs_dfs_ref.c
@@ -120,17 +120,17 @@ cifs_build_devname(char *nodename, const char *prepath)
/**
- * cifs_compose_mount_options - creates mount options for refferral
+ * cifs_compose_mount_options - creates mount options for referral
* @sb_mountdata: parent/root DFS mount options (template)
* @fullpath: full path in UNC format
- * @ref: server's referral
+ * @ref: optional server's referral
* @devname: optional pointer for saving device name
*
* creates mount options for submount based on template options sb_mountdata
* and replacing unc,ip,prefixpath options with ones we've got form ref_unc.
*
* Returns: pointer to new mount options or ERR_PTR.
- * Caller is responcible for freeing retunrned value if it is not error.
+ * Caller is responsible for freeing returned value if it is not error.
*/
char *cifs_compose_mount_options(const char *sb_mountdata,
const char *fullpath,
@@ -150,18 +150,27 @@ char *cifs_compose_mount_options(const char *sb_mountdata,
if (sb_mountdata == NULL)
return ERR_PTR(-EINVAL);
- if (strlen(fullpath) - ref->path_consumed) {
- prepath = fullpath + ref->path_consumed;
- /* skip initial delimiter */
- if (*prepath == '/' || *prepath == '\\')
- prepath++;
- }
+ if (ref) {
+ if (strlen(fullpath) - ref->path_consumed) {
+ prepath = fullpath + ref->path_consumed;
+ /* skip initial delimiter */
+ if (*prepath == '/' || *prepath == '\\')
+ prepath++;
+ }
- name = cifs_build_devname(ref->node_name, prepath);
- if (IS_ERR(name)) {
- rc = PTR_ERR(name);
- name = NULL;
- goto compose_mount_options_err;
+ name = cifs_build_devname(ref->node_name, prepath);
+ if (IS_ERR(name)) {
+ rc = PTR_ERR(name);
+ name = NULL;
+ goto compose_mount_options_err;
+ }
+ } else {
+ name = cifs_build_devname((char *)fullpath, NULL);
+ if (IS_ERR(name)) {
+ rc = PTR_ERR(name);
+ name = NULL;
+ goto compose_mount_options_err;
+ }
}
rc = dns_resolve_server_name_to_ip(name, &srvIP);
@@ -225,6 +234,8 @@ char *cifs_compose_mount_options(const char *sb_mountdata,
if (devname)
*devname = name;
+ else
+ kfree(name);
/*cifs_dbg(FYI, "%s: parent mountdata: %s\n", __func__, sb_mountdata);*/
/*cifs_dbg(FYI, "%s: submount mountdata: %s\n", __func__, mountdata );*/
@@ -241,23 +252,23 @@ compose_mount_options_err:
}
/**
- * cifs_dfs_do_refmount - mounts specified path using provided refferal
+ * cifs_dfs_do_mount - mounts specified path using DFS full path
+ *
+ * Always pass down @fullpath to smb3_do_mount() so we can use the root server
+ * to perform failover in case we failed to connect to the first target in the
+ * referral.
+ *
* @cifs_sb: parent/root superblock
* @fullpath: full path in UNC format
- * @ref: server's referral
*/
-static struct vfsmount *cifs_dfs_do_refmount(struct dentry *mntpt,
- struct cifs_sb_info *cifs_sb,
- const char *fullpath, const struct dfs_info3_param *ref)
+static struct vfsmount *cifs_dfs_do_mount(struct dentry *mntpt,
+ struct cifs_sb_info *cifs_sb,
+ const char *fullpath)
{
struct vfsmount *mnt;
char *mountdata;
char *devname;
- /*
- * Always pass down the DFS full path to smb3_do_mount() so we
- * can use it later for failover.
- */
devname = kstrndup(fullpath, strlen(fullpath), GFP_KERNEL);
if (!devname)
return ERR_PTR(-ENOMEM);
@@ -266,7 +277,7 @@ static struct vfsmount *cifs_dfs_do_refmount(struct dentry *mntpt,
/* strip first '\' from fullpath */
mountdata = cifs_compose_mount_options(cifs_sb->mountdata,
- fullpath + 1, ref, NULL);
+ fullpath + 1, NULL, NULL);
if (IS_ERR(mountdata)) {
kfree(devname);
return (struct vfsmount *)mountdata;
@@ -278,28 +289,16 @@ static struct vfsmount *cifs_dfs_do_refmount(struct dentry *mntpt,
return mnt;
}
-static void dump_referral(const struct dfs_info3_param *ref)
-{
- cifs_dbg(FYI, "DFS: ref path: %s\n", ref->path_name);
- cifs_dbg(FYI, "DFS: node path: %s\n", ref->node_name);
- cifs_dbg(FYI, "DFS: fl: %d, srv_type: %d\n",
- ref->flags, ref->server_type);
- cifs_dbg(FYI, "DFS: ref_flags: %d, path_consumed: %d\n",
- ref->ref_flag, ref->path_consumed);
-}
-
/*
* Create a vfsmount that we can automount
*/
static struct vfsmount *cifs_dfs_do_automount(struct dentry *mntpt)
{
- struct dfs_info3_param referral = {0};
struct cifs_sb_info *cifs_sb;
struct cifs_ses *ses;
struct cifs_tcon *tcon;
char *full_path, *root_path;
unsigned int xid;
- int len;
int rc;
struct vfsmount *mnt;
@@ -325,6 +324,8 @@ static struct vfsmount *cifs_dfs_do_automount(struct dentry *mntpt)
if (full_path == NULL)
goto cdda_exit;
+ convert_delimiter(full_path, '\\');
+
cifs_dbg(FYI, "%s: full_path: %s\n", __func__, full_path);
if (!cifs_sb_master_tlink(cifs_sb)) {
@@ -357,7 +358,7 @@ static struct vfsmount *cifs_dfs_do_automount(struct dentry *mntpt)
if (!rc) {
rc = dfs_cache_find(xid, ses, cifs_sb->local_nls,
cifs_remap(cifs_sb), full_path + 1,
- &referral, NULL);
+ NULL, NULL);
}
free_xid(xid);
@@ -366,26 +367,16 @@ static struct vfsmount *cifs_dfs_do_automount(struct dentry *mntpt)
mnt = ERR_PTR(rc);
goto free_root_path;
}
-
- dump_referral(&referral);
-
- len = strlen(referral.node_name);
- if (len < 2) {
- cifs_dbg(VFS, "%s: Net Address path too short: %s\n",
- __func__, referral.node_name);
- mnt = ERR_PTR(-EINVAL);
- goto free_dfs_ref;
- }
/*
- * cifs_mount() will retry every available node server in case
- * of failures.
+ * OK - we were able to get and cache a referral for @full_path.
+ *
+ * Now, pass it down to cifs_mount() and it will retry every available
+ * node server in case of failures - no need to do it here.
*/
- mnt = cifs_dfs_do_refmount(mntpt, cifs_sb, full_path, &referral);
- cifs_dbg(FYI, "%s: cifs_dfs_do_refmount:%s , mnt:%p\n", __func__,
- referral.node_name, mnt);
+ mnt = cifs_dfs_do_mount(mntpt, cifs_sb, full_path);
+ cifs_dbg(FYI, "%s: cifs_dfs_do_mount:%s , mnt:%p\n", __func__,
+ full_path + 1, mnt);
-free_dfs_ref:
- free_dfs_info_param(&referral);
free_root_path:
kfree(root_path);
free_full_path:
diff --git a/fs/cifs/cifsacl.c b/fs/cifs/cifsacl.c
index 1d377b7f2860..130bdca9e568 100644
--- a/fs/cifs/cifsacl.c
+++ b/fs/cifs/cifsacl.c
@@ -603,7 +603,7 @@ static void access_flags_to_mode(__le32 ace_flags, int type, umode_t *pmode,
((flags & FILE_EXEC_RIGHTS) == FILE_EXEC_RIGHTS))
*pmode |= (S_IXUGO & (*pbits_to_set));
- cifs_dbg(NOISY, "access flags 0x%x mode now 0x%x\n", flags, *pmode);
+ cifs_dbg(NOISY, "access flags 0x%x mode now %04o\n", flags, *pmode);
return;
}
@@ -632,7 +632,7 @@ static void mode_to_access_flags(umode_t mode, umode_t bits_to_use,
if (mode & S_IXUGO)
*pace_flags |= SET_FILE_EXEC_RIGHTS;
- cifs_dbg(NOISY, "mode: 0x%x, access flags now 0x%x\n",
+ cifs_dbg(NOISY, "mode: %04o, access flags now 0x%x\n",
mode, *pace_flags);
return;
}
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index bd34ea0d27e9..dd19556c835f 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -376,7 +376,7 @@ cifs_show_security(struct seq_file *s, struct cifs_ses *ses)
seq_puts(s, "ntlm");
break;
case Kerberos:
- seq_printf(s, "krb5,cruid=%u", from_kuid_munged(&init_user_ns,ses->cred_uid));
+ seq_puts(s, "krb5");
break;
case RawNTLMSSP:
seq_puts(s, "ntlmssp");
@@ -389,6 +389,10 @@ cifs_show_security(struct seq_file *s, struct cifs_ses *ses)
if (ses->sign)
seq_puts(s, "i");
+
+ if (ses->sectype == Kerberos)
+ seq_printf(s, ",cruid=%u",
+ from_kuid_munged(&init_user_ns, ses->cred_uid));
}
static void
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index 85aa1bc930f1..6ccff44dbd4b 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -1376,6 +1376,11 @@ void cifsFileInfo_put(struct cifsFileInfo *cifs_file);
struct cifsInodeInfo {
bool can_cache_brlcks;
struct list_head llist; /* locks helb by this inode */
+ /*
+ * NOTE: Some code paths call down_read(lock_sem) twice, so
+ * we must always use use cifs_down_write() instead of down_write()
+ * for this semaphore to avoid deadlocks.
+ */
struct rw_semaphore lock_sem; /* protect the fields above */
/* BB add in lists for dirty pages i.e. write caching info for oplock */
struct list_head openFileList;
@@ -1504,6 +1509,7 @@ struct mid_q_entry {
struct TCP_Server_Info *server; /* server corresponding to this mid */
__u64 mid; /* multiplex id */
__u16 credits; /* number of credits consumed by this mid */
+ __u16 credits_received; /* number of credits from the response */
__u32 pid; /* process id */
__u32 sequence_number; /* for CIFS signing */
unsigned long when_alloc; /* when mid was created */
@@ -1515,6 +1521,7 @@ struct mid_q_entry {
mid_callback_t *callback; /* call completion callback */
mid_handle_t *handle; /* call handle mid callback */
void *callback_data; /* general purpose pointer for callback */
+ struct task_struct *creator;
void *resp_buf; /* pointer to received SMB header */
unsigned int resp_buf_size;
int mid_state; /* wish this were enum but can not pass to wait_event */
diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h
index e23234207fc2..6d7c692ce2ba 100644
--- a/fs/cifs/cifsproto.h
+++ b/fs/cifs/cifsproto.h
@@ -166,6 +166,7 @@ extern int cifs_unlock_range(struct cifsFileInfo *cfile,
struct file_lock *flock, const unsigned int xid);
extern int cifs_push_mandatory_locks(struct cifsFileInfo *cfile);
+extern void cifs_down_write(struct rw_semaphore *sem);
extern struct cifsFileInfo *cifs_new_fileinfo(struct cifs_fid *fid,
struct file *file,
struct tcon_link *tlink,
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index 1fbd92843a73..0f40811a481b 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -2148,8 +2148,8 @@ cifs_writev_requeue(struct cifs_writedata *wdata)
}
}
+ kref_put(&wdata2->refcount, cifs_writedata_release);
if (rc) {
- kref_put(&wdata2->refcount, cifs_writedata_release);
if (is_retryable_error(rc))
continue;
i += nr_pages;
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index bd8c00635ea4..8924f1427472 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -360,8 +360,10 @@ static int reconn_set_ipaddr(struct TCP_Server_Info *server)
return rc;
}
+ spin_lock(&cifs_tcp_ses_lock);
rc = cifs_convert_address((struct sockaddr *)&server->dstaddr, ipaddr,
strlen(ipaddr));
+ spin_unlock(&cifs_tcp_ses_lock);
kfree(ipaddr);
return !rc ? -1 : 0;
@@ -376,7 +378,7 @@ static inline int reconn_set_ipaddr(struct TCP_Server_Info *server)
#ifdef CONFIG_CIFS_DFS_UPCALL
struct super_cb_data {
struct TCP_Server_Info *server;
- struct cifs_sb_info *cifs_sb;
+ struct super_block *sb;
};
/* These functions must be called with server->srv_mutex held */
@@ -387,25 +389,39 @@ static void super_cb(struct super_block *sb, void *arg)
struct cifs_sb_info *cifs_sb;
struct cifs_tcon *tcon;
- if (d->cifs_sb)
+ if (d->sb)
return;
cifs_sb = CIFS_SB(sb);
tcon = cifs_sb_master_tcon(cifs_sb);
if (tcon->ses->server == d->server)
- d->cifs_sb = cifs_sb;
+ d->sb = sb;
}
-static inline struct cifs_sb_info *
-find_super_by_tcp(struct TCP_Server_Info *server)
+static struct super_block *get_tcp_super(struct TCP_Server_Info *server)
{
struct super_cb_data d = {
.server = server,
- .cifs_sb = NULL,
+ .sb = NULL,
};
iterate_supers_type(&cifs_fs_type, super_cb, &d);
- return d.cifs_sb ? d.cifs_sb : ERR_PTR(-ENOENT);
+
+ if (unlikely(!d.sb))
+ return ERR_PTR(-ENOENT);
+ /*
+ * Grab an active reference in order to prevent automounts (DFS links)
+ * of expiring and then freeing up our cifs superblock pointer while
+ * we're doing failover.
+ */
+ cifs_sb_active(d.sb);
+ return d.sb;
+}
+
+static inline void put_tcp_super(struct super_block *sb)
+{
+ if (!IS_ERR_OR_NULL(sb))
+ cifs_sb_deactive(sb);
}
static void reconn_inval_dfs_target(struct TCP_Server_Info *server,
@@ -469,6 +485,7 @@ cifs_reconnect(struct TCP_Server_Info *server)
struct mid_q_entry *mid_entry;
struct list_head retry_list;
#ifdef CONFIG_CIFS_DFS_UPCALL
+ struct super_block *sb = NULL;
struct cifs_sb_info *cifs_sb = NULL;
struct dfs_cache_tgt_list tgt_list = {0};
struct dfs_cache_tgt_iterator *tgt_it = NULL;
@@ -478,13 +495,15 @@ cifs_reconnect(struct TCP_Server_Info *server)
server->nr_targets = 1;
#ifdef CONFIG_CIFS_DFS_UPCALL
spin_unlock(&GlobalMid_Lock);
- cifs_sb = find_super_by_tcp(server);
- if (IS_ERR(cifs_sb)) {
- rc = PTR_ERR(cifs_sb);
+ sb = get_tcp_super(server);
+ if (IS_ERR(sb)) {
+ rc = PTR_ERR(sb);
cifs_dbg(FYI, "%s: will not do DFS failover: rc = %d\n",
__func__, rc);
- cifs_sb = NULL;
+ sb = NULL;
} else {
+ cifs_sb = CIFS_SB(sb);
+
rc = reconn_setup_dfs_targets(cifs_sb, &tgt_list, &tgt_it);
if (rc && (rc != -EOPNOTSUPP)) {
cifs_dbg(VFS, "%s: no target servers for DFS failover\n",
@@ -501,6 +520,10 @@ cifs_reconnect(struct TCP_Server_Info *server)
/* the demux thread will exit normally
next time through the loop */
spin_unlock(&GlobalMid_Lock);
+#ifdef CONFIG_CIFS_DFS_UPCALL
+ dfs_cache_free_tgts(&tgt_list);
+ put_tcp_super(sb);
+#endif
return rc;
} else
server->tcpStatus = CifsNeedReconnect;
@@ -553,9 +576,11 @@ cifs_reconnect(struct TCP_Server_Info *server)
spin_lock(&GlobalMid_Lock);
list_for_each_safe(tmp, tmp2, &server->pending_mid_q) {
mid_entry = list_entry(tmp, struct mid_q_entry, qhead);
+ kref_get(&mid_entry->refcount);
if (mid_entry->mid_state == MID_REQUEST_SUBMITTED)
mid_entry->mid_state = MID_RETRY_NEEDED;
list_move(&mid_entry->qhead, &retry_list);
+ mid_entry->mid_flags |= MID_DELETED;
}
spin_unlock(&GlobalMid_Lock);
mutex_unlock(&server->srv_mutex);
@@ -565,6 +590,7 @@ cifs_reconnect(struct TCP_Server_Info *server)
mid_entry = list_entry(tmp, struct mid_q_entry, qhead);
list_del_init(&mid_entry->qhead);
mid_entry->callback(mid_entry);
+ cifs_mid_q_entry_release(mid_entry);
}
if (cifs_rdma_enabled(server)) {
@@ -577,26 +603,26 @@ cifs_reconnect(struct TCP_Server_Info *server)
try_to_freeze();
mutex_lock(&server->srv_mutex);
+#ifdef CONFIG_CIFS_DFS_UPCALL
/*
* Set up next DFS target server (if any) for reconnect. If DFS
* feature is disabled, then we will retry last server we
* connected to before.
*/
+ reconn_inval_dfs_target(server, cifs_sb, &tgt_list, &tgt_it);
+#endif
+ rc = reconn_set_ipaddr(server);
+ if (rc) {
+ cifs_dbg(FYI, "%s: failed to resolve hostname: %d\n",
+ __func__, rc);
+ }
+
if (cifs_rdma_enabled(server))
rc = smbd_reconnect(server);
else
rc = generic_ip_connect(server);
if (rc) {
cifs_dbg(FYI, "reconnect error %d\n", rc);
-#ifdef CONFIG_CIFS_DFS_UPCALL
- reconn_inval_dfs_target(server, cifs_sb, &tgt_list,
- &tgt_it);
-#endif
- rc = reconn_set_ipaddr(server);
- if (rc) {
- cifs_dbg(FYI, "%s: failed to resolve hostname: %d\n",
- __func__, rc);
- }
mutex_unlock(&server->srv_mutex);
msleep(3000);
} else {
@@ -624,7 +650,10 @@ cifs_reconnect(struct TCP_Server_Info *server)
__func__, rc);
}
dfs_cache_free_tgts(&tgt_list);
+
}
+
+ put_tcp_super(sb);
#endif
if (server->tcpStatus == CifsNeedNegotiate)
mod_delayed_work(cifsiod_wq, &server->echo, 0);
@@ -884,11 +913,27 @@ dequeue_mid(struct mid_q_entry *mid, bool malformed)
if (mid->mid_flags & MID_DELETED)
printk_once(KERN_WARNING
"trying to dequeue a deleted mid\n");
- else
+ else {
list_del_init(&mid->qhead);
+ mid->mid_flags |= MID_DELETED;
+ }
spin_unlock(&GlobalMid_Lock);
}
+static unsigned int
+smb2_get_credits_from_hdr(char *buffer, struct TCP_Server_Info *server)
+{
+ struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buffer;
+
+ /*
+ * SMB1 does not use credits.
+ */
+ if (server->vals->header_preamble_size)
+ return 0;
+
+ return le16_to_cpu(shdr->CreditRequest);
+}
+
static void
handle_mid(struct mid_q_entry *mid, struct TCP_Server_Info *server,
char *buf, int malformed)
@@ -896,6 +941,7 @@ handle_mid(struct mid_q_entry *mid, struct TCP_Server_Info *server,
if (server->ops->check_trans2 &&
server->ops->check_trans2(mid, server, buf, malformed))
return;
+ mid->credits_received = smb2_get_credits_from_hdr(buf, server);
mid->resp_buf = buf;
mid->large_buf = server->large_buf;
/* Was previous buf put in mpx struct for multi-rsp? */
@@ -955,8 +1001,10 @@ static void clean_demultiplex_info(struct TCP_Server_Info *server)
list_for_each_safe(tmp, tmp2, &server->pending_mid_q) {
mid_entry = list_entry(tmp, struct mid_q_entry, qhead);
cifs_dbg(FYI, "Clearing mid 0x%llx\n", mid_entry->mid);
+ kref_get(&mid_entry->refcount);
mid_entry->mid_state = MID_SHUTDOWN;
list_move(&mid_entry->qhead, &dispose_list);
+ mid_entry->mid_flags |= MID_DELETED;
}
spin_unlock(&GlobalMid_Lock);
@@ -966,6 +1014,7 @@ static void clean_demultiplex_info(struct TCP_Server_Info *server)
cifs_dbg(FYI, "Callback mid 0x%llx\n", mid_entry->mid);
list_del_init(&mid_entry->qhead);
mid_entry->callback(mid_entry);
+ cifs_mid_q_entry_release(mid_entry);
}
/* 1/8th of sec is more than enough time for them to exit */
msleep(125);
@@ -1202,12 +1251,6 @@ next_pdu:
for (i = 0; i < num_mids; i++) {
if (mids[i] != NULL) {
mids[i]->resp_buf_size = server->pdu_size;
- if ((mids[i]->mid_flags & MID_WAIT_CANCELLED) &&
- mids[i]->mid_state == MID_RESPONSE_RECEIVED &&
- server->ops->handle_cancelled_mid)
- server->ops->handle_cancelled_mid(
- mids[i]->resp_buf,
- server);
if (!mids[i]->multiRsp || mids[i]->multiEnd)
mids[i]->callback(mids[i]);
@@ -3248,6 +3291,10 @@ cifs_find_tcon(struct cifs_ses *ses, struct smb_vol *volume_info)
spin_lock(&cifs_tcp_ses_lock);
list_for_each(tmp, &ses->tcon_list) {
tcon = list_entry(tmp, struct cifs_tcon, tcon_list);
+#ifdef CONFIG_CIFS_DFS_UPCALL
+ if (tcon->dfs_path)
+ continue;
+#endif
if (!match_tcon(tcon, volume_info))
continue;
++tcon->tc_count;
@@ -3532,8 +3579,10 @@ match_prepath(struct super_block *sb, struct cifs_mnt_data *mnt_data)
{
struct cifs_sb_info *old = CIFS_SB(sb);
struct cifs_sb_info *new = mnt_data->cifs_sb;
- bool old_set = old->mnt_cifs_flags & CIFS_MOUNT_USE_PREFIX_PATH;
- bool new_set = new->mnt_cifs_flags & CIFS_MOUNT_USE_PREFIX_PATH;
+ bool old_set = (old->mnt_cifs_flags & CIFS_MOUNT_USE_PREFIX_PATH) &&
+ old->prepath;
+ bool new_set = (new->mnt_cifs_flags & CIFS_MOUNT_USE_PREFIX_PATH) &&
+ new->prepath;
if (old_set && new_set && !strcmp(new->prepath, old->prepath))
return 1;
@@ -3964,7 +4013,7 @@ int cifs_setup_cifs_sb(struct smb_vol *pvolume_info,
cifs_sb->mnt_gid = pvolume_info->linux_gid;
cifs_sb->mnt_file_mode = pvolume_info->file_mode;
cifs_sb->mnt_dir_mode = pvolume_info->dir_mode;
- cifs_dbg(FYI, "file mode: 0x%hx dir mode: 0x%hx\n",
+ cifs_dbg(FYI, "file mode: %04ho dir mode: %04ho\n",
cifs_sb->mnt_file_mode, cifs_sb->mnt_dir_mode);
cifs_sb->actimeo = pvolume_info->actimeo;
@@ -4582,6 +4631,17 @@ static int is_path_remote(struct cifs_sb_info *cifs_sb, struct smb_vol *vol,
}
#ifdef CONFIG_CIFS_DFS_UPCALL
+static inline void set_root_tcon(struct cifs_sb_info *cifs_sb,
+ struct cifs_tcon *tcon,
+ struct cifs_tcon **root)
+{
+ spin_lock(&cifs_tcp_ses_lock);
+ tcon->tc_count++;
+ tcon->remap = cifs_remap(cifs_sb);
+ spin_unlock(&cifs_tcp_ses_lock);
+ *root = tcon;
+}
+
int cifs_mount(struct cifs_sb_info *cifs_sb, struct smb_vol *vol)
{
int rc = 0;
@@ -4683,18 +4743,10 @@ int cifs_mount(struct cifs_sb_info *cifs_sb, struct smb_vol *vol)
/* Cache out resolved root server */
(void)dfs_cache_find(xid, ses, cifs_sb->local_nls, cifs_remap(cifs_sb),
root_path + 1, NULL, NULL);
- /*
- * Save root tcon for additional DFS requests to update or create a new
- * DFS cache entry, or even perform DFS failover.
- */
- spin_lock(&cifs_tcp_ses_lock);
- tcon->tc_count++;
- tcon->dfs_path = root_path;
+ kfree(root_path);
root_path = NULL;
- tcon->remap = cifs_remap(cifs_sb);
- spin_unlock(&cifs_tcp_ses_lock);
- root_tcon = tcon;
+ set_root_tcon(cifs_sb, tcon, &root_tcon);
for (count = 1; ;) {
if (!rc && tcon) {
@@ -4731,6 +4783,15 @@ int cifs_mount(struct cifs_sb_info *cifs_sb, struct smb_vol *vol)
mount_put_conns(cifs_sb, xid, server, ses, tcon);
rc = mount_get_conns(vol, cifs_sb, &xid, &server, &ses,
&tcon);
+ /*
+ * Ensure that DFS referrals go through new root server.
+ */
+ if (!rc && tcon &&
+ (tcon->share_flags & (SHI1005_FLAGS_DFS |
+ SHI1005_FLAGS_DFS_ROOT))) {
+ cifs_put_tcon(root_tcon);
+ set_root_tcon(cifs_sb, tcon, &root_tcon);
+ }
}
if (rc) {
if (rc == -EACCES || rc == -EOPNOTSUPP)
@@ -5110,9 +5171,15 @@ cifs_construct_tcon(struct cifs_sb_info *cifs_sb, kuid_t fsuid)
vol_info->nocase = master_tcon->nocase;
vol_info->nohandlecache = master_tcon->nohandlecache;
vol_info->local_lease = master_tcon->local_lease;
+ vol_info->no_lease = master_tcon->no_lease;
+ vol_info->resilient = master_tcon->use_resilient;
+ vol_info->persistent = master_tcon->use_persistent;
+ vol_info->handle_timeout = master_tcon->handle_timeout;
vol_info->no_linux_ext = !master_tcon->unix_ext;
+ vol_info->linux_ext = master_tcon->posix_extensions;
vol_info->sectype = master_tcon->ses->sectype;
vol_info->sign = master_tcon->ses->sign;
+ vol_info->seal = master_tcon->seal;
rc = cifs_set_vol_auth(vol_info, master_tcon->ses);
if (rc) {
@@ -5138,10 +5205,6 @@ cifs_construct_tcon(struct cifs_sb_info *cifs_sb, kuid_t fsuid)
goto out;
}
- /* if new SMB3.11 POSIX extensions are supported do not remap / and \ */
- if (tcon->posix_extensions)
- cifs_sb->mnt_cifs_flags |= CIFS_MOUNT_POSIX_PATHS;
-
if (cap_unix(ses))
reset_cifs_unix_caps(0, tcon, NULL, vol_info);
diff --git a/fs/cifs/dfs_cache.c b/fs/cifs/dfs_cache.c
index e3e1c13df439..24e2e22103a1 100644
--- a/fs/cifs/dfs_cache.c
+++ b/fs/cifs/dfs_cache.c
@@ -1317,10 +1317,9 @@ static struct cifs_ses *find_root_ses(struct dfs_cache_vol_info *vi,
int rc;
struct dfs_info3_param ref = {0};
char *mdata = NULL, *devname = NULL;
- bool is_smb3 = tcon->ses->server->vals->header_preamble_size == 0;
struct TCP_Server_Info *server;
struct cifs_ses *ses;
- struct smb_vol vol;
+ struct smb_vol vol = {NULL};
rpath = get_dfs_root(path);
if (IS_ERR(rpath))
@@ -1344,7 +1343,7 @@ static struct cifs_ses *find_root_ses(struct dfs_cache_vol_info *vi,
goto out;
}
- rc = cifs_setup_volume_info(&vol, mdata, devname, is_smb3);
+ rc = cifs_setup_volume_info(&vol, mdata, devname, false);
kfree(devname);
if (rc) {
diff --git a/fs/cifs/dir.c b/fs/cifs/dir.c
index 53b5bdf465e0..bf7644bf0605 100644
--- a/fs/cifs/dir.c
+++ b/fs/cifs/dir.c
@@ -561,7 +561,6 @@ cifs_atomic_open(struct inode *inode, struct dentry *direntry,
if (server->ops->close)
server->ops->close(xid, tcon, &fid);
cifs_del_pending_open(&open);
- fput(file);
rc = -ENOMEM;
}
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 53dbb6e0d390..076105389a63 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -281,6 +281,13 @@ cifs_has_mand_locks(struct cifsInodeInfo *cinode)
return has_locks;
}
+void
+cifs_down_write(struct rw_semaphore *sem)
+{
+ while (!down_write_trylock(sem))
+ msleep(10);
+}
+
struct cifsFileInfo *
cifs_new_fileinfo(struct cifs_fid *fid, struct file *file,
struct tcon_link *tlink, __u32 oplock)
@@ -306,9 +313,6 @@ cifs_new_fileinfo(struct cifs_fid *fid, struct file *file,
INIT_LIST_HEAD(&fdlocks->locks);
fdlocks->cfile = cfile;
cfile->llist = fdlocks;
- down_write(&cinode->lock_sem);
- list_add(&fdlocks->llist, &cinode->llist);
- up_write(&cinode->lock_sem);
cfile->count = 1;
cfile->pid = current->tgid;
@@ -332,6 +336,10 @@ cifs_new_fileinfo(struct cifs_fid *fid, struct file *file,
oplock = 0;
}
+ cifs_down_write(&cinode->lock_sem);
+ list_add(&fdlocks->llist, &cinode->llist);
+ up_write(&cinode->lock_sem);
+
spin_lock(&tcon->open_file_lock);
if (fid->pending_open->oplock != CIFS_OPLOCK_NO_CHANGE && oplock)
oplock = fid->pending_open->oplock;
@@ -464,7 +472,7 @@ void _cifsFileInfo_put(struct cifsFileInfo *cifs_file, bool wait_oplock_handler)
* Delete any outstanding lock records. We'll lose them when the file
* is closed anyway.
*/
- down_write(&cifsi->lock_sem);
+ cifs_down_write(&cifsi->lock_sem);
list_for_each_entry_safe(li, tmp, &cifs_file->llist->locks, llist) {
list_del(&li->llist);
cifs_del_lock_waiters(li);
@@ -721,6 +729,13 @@ cifs_reopen_file(struct cifsFileInfo *cfile, bool can_flush)
if (backup_cred(cifs_sb))
create_options |= CREATE_OPEN_BACKUP_INTENT;
+ /* O_SYNC also has bit for O_DSYNC so following check picks up either */
+ if (cfile->f_flags & O_SYNC)
+ create_options |= CREATE_WRITE_THROUGH;
+
+ if (cfile->f_flags & O_DIRECT)
+ create_options |= CREATE_NO_BUFFER;
+
if (server->ops->get_lease_key)
server->ops->get_lease_key(inode, &cfile->fid);
@@ -1027,7 +1042,7 @@ static void
cifs_lock_add(struct cifsFileInfo *cfile, struct cifsLockInfo *lock)
{
struct cifsInodeInfo *cinode = CIFS_I(d_inode(cfile->dentry));
- down_write(&cinode->lock_sem);
+ cifs_down_write(&cinode->lock_sem);
list_add_tail(&lock->llist, &cfile->llist->locks);
up_write(&cinode->lock_sem);
}
@@ -1049,7 +1064,7 @@ cifs_lock_add_if(struct cifsFileInfo *cfile, struct cifsLockInfo *lock,
try_again:
exist = false;
- down_write(&cinode->lock_sem);
+ cifs_down_write(&cinode->lock_sem);
exist = cifs_find_lock_conflict(cfile, lock->offset, lock->length,
lock->type, lock->flags, &conf_lock,
@@ -1072,7 +1087,7 @@ try_again:
(lock->blist.next == &lock->blist));
if (!rc)
goto try_again;
- down_write(&cinode->lock_sem);
+ cifs_down_write(&cinode->lock_sem);
list_del_init(&lock->blist);
}
@@ -1125,7 +1140,7 @@ cifs_posix_lock_set(struct file *file, struct file_lock *flock)
return rc;
try_again:
- down_write(&cinode->lock_sem);
+ cifs_down_write(&cinode->lock_sem);
if (!cinode->can_cache_brlcks) {
up_write(&cinode->lock_sem);
return rc;
@@ -1134,7 +1149,8 @@ try_again:
rc = posix_lock_file(file, flock, NULL);
up_write(&cinode->lock_sem);
if (rc == FILE_LOCK_DEFERRED) {
- rc = wait_event_interruptible(flock->fl_wait, !flock->fl_blocker);
+ rc = wait_event_interruptible(flock->fl_wait,
+ list_empty(&flock->fl_blocked_member));
if (!rc)
goto try_again;
locks_delete_block(flock);
@@ -1331,7 +1347,7 @@ cifs_push_locks(struct cifsFileInfo *cfile)
int rc = 0;
/* we are going to update can_cache_brlcks here - need a write access */
- down_write(&cinode->lock_sem);
+ cifs_down_write(&cinode->lock_sem);
if (!cinode->can_cache_brlcks) {
up_write(&cinode->lock_sem);
return rc;
@@ -1522,7 +1538,7 @@ cifs_unlock_range(struct cifsFileInfo *cfile, struct file_lock *flock,
if (!buf)
return -ENOMEM;
- down_write(&cinode->lock_sem);
+ cifs_down_write(&cinode->lock_sem);
for (i = 0; i < 2; i++) {
cur = buf;
num = 0;
@@ -3671,7 +3687,7 @@ again:
if (rc == -ENODATA)
rc = 0;
- ctx->rc = (rc == 0) ? ctx->total_len : rc;
+ ctx->rc = (rc == 0) ? (ssize_t)ctx->total_len : rc;
mutex_unlock(&ctx->aio_mutex);
@@ -3890,7 +3906,7 @@ cifs_read(struct file *file, char *read_data, size_t read_size, loff_t *offset)
* than it negotiated since it will refuse the read
* then.
*/
- if ((tcon->ses) && !(tcon->ses->capabilities &
+ if (!(tcon->ses->capabilities &
tcon->ses->server->vals->cap_large_files)) {
current_read_size = min_t(uint,
current_read_size, CIFSMaxBufSize);
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index f2042d1a1cc4..97d826a26478 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -163,7 +163,7 @@ cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr)
spin_lock(&inode->i_lock);
/* we do not want atime to be less than mtime, it broke some apps */
- if (timespec64_compare(&fattr->cf_atime, &fattr->cf_mtime))
+ if (timespec64_compare(&fattr->cf_atime, &fattr->cf_mtime) < 0)
inode->i_atime = fattr->cf_mtime;
else
inode->i_atime = fattr->cf_atime;
@@ -1579,7 +1579,7 @@ int cifs_mkdir(struct inode *inode, struct dentry *direntry, umode_t mode)
struct TCP_Server_Info *server;
char *full_path;
- cifs_dbg(FYI, "In cifs_mkdir, mode = 0x%hx inode = 0x%p\n",
+ cifs_dbg(FYI, "In cifs_mkdir, mode = %04ho inode = 0x%p\n",
mode, inode);
cifs_sb = CIFS_SB(inode->i_sb);
@@ -2003,6 +2003,7 @@ int cifs_revalidate_dentry_attr(struct dentry *dentry)
struct inode *inode = d_inode(dentry);
struct super_block *sb = dentry->d_sb;
char *full_path = NULL;
+ int count = 0;
if (inode == NULL)
return -ENOENT;
@@ -2024,15 +2025,18 @@ int cifs_revalidate_dentry_attr(struct dentry *dentry)
full_path, inode, inode->i_count.counter,
dentry, cifs_get_time(dentry), jiffies);
+again:
if (cifs_sb_master_tcon(CIFS_SB(sb))->unix_ext)
rc = cifs_get_inode_info_unix(&inode, full_path, sb, xid);
else
rc = cifs_get_inode_info(&inode, full_path, NULL, sb,
xid, NULL);
-
+ if (rc == -EAGAIN && count++ < 10)
+ goto again;
out:
kfree(full_path);
free_xid(xid);
+
return rc;
}
@@ -2252,6 +2256,15 @@ set_size_out:
if (rc == 0) {
cifsInode->server_eof = attrs->ia_size;
cifs_setsize(inode, attrs->ia_size);
+
+ /*
+ * The man page of truncate says if the size changed,
+ * then the st_ctime and st_mtime fields for the file
+ * are updated.
+ */
+ attrs->ia_ctime = attrs->ia_mtime = current_time(inode);
+ attrs->ia_valid |= ATTR_CTIME | ATTR_MTIME;
+
cifs_truncate_page(inode->i_mapping, inode->i_size);
}
@@ -2442,25 +2455,26 @@ cifs_setattr_nounix(struct dentry *direntry, struct iattr *attrs)
/*
* Attempt to flush data before changing attributes. We need to do
- * this for ATTR_SIZE and ATTR_MTIME for sure, and if we change the
- * ownership or mode then we may also need to do this. Here, we take
- * the safe way out and just do the flush on all setattr requests. If
- * the flush returns error, store it to report later and continue.
+ * this for ATTR_SIZE and ATTR_MTIME. If the flush of the data
+ * returns error, store it to report later and continue.
*
* BB: This should be smarter. Why bother flushing pages that
* will be truncated anyway? Also, should we error out here if
- * the flush returns error?
+ * the flush returns error? Do we need to check for ATTR_MTIME_SET flag?
*/
- rc = filemap_write_and_wait(inode->i_mapping);
- if (is_interrupt_error(rc)) {
- rc = -ERESTARTSYS;
- goto cifs_setattr_exit;
+ if (attrs->ia_valid & (ATTR_MTIME | ATTR_SIZE | ATTR_CTIME)) {
+ rc = filemap_write_and_wait(inode->i_mapping);
+ if (is_interrupt_error(rc)) {
+ rc = -ERESTARTSYS;
+ goto cifs_setattr_exit;
+ }
+ mapping_set_error(inode->i_mapping, rc);
}
- mapping_set_error(inode->i_mapping, rc);
rc = 0;
- if (attrs->ia_valid & ATTR_MTIME) {
+ if ((attrs->ia_valid & ATTR_MTIME) &&
+ !(cifs_sb->mnt_cifs_flags & CIFS_MOUNT_NOSSYNC)) {
rc = cifs_get_writable_file(cifsInode, false, &wfile);
if (!rc) {
tcon = tlink_tcon(wfile->tlink);
diff --git a/fs/cifs/netmisc.c b/fs/cifs/netmisc.c
index ed92958e842d..657f409d4de0 100644
--- a/fs/cifs/netmisc.c
+++ b/fs/cifs/netmisc.c
@@ -117,10 +117,6 @@ static const struct smb_to_posix_error mapping_table_ERRSRV[] = {
{0, 0}
};
-static const struct smb_to_posix_error mapping_table_ERRHRD[] = {
- {0, 0}
-};
-
/*
* Convert a string containing text IPv4 or IPv6 address to binary form.
*
diff --git a/fs/cifs/smb2file.c b/fs/cifs/smb2file.c
index 54bffb2a1786..060fbe1e005b 100644
--- a/fs/cifs/smb2file.c
+++ b/fs/cifs/smb2file.c
@@ -67,7 +67,7 @@ smb2_open_file(const unsigned int xid, struct cifs_open_parms *oparms,
goto out;
- if (oparms->tcon->use_resilient) {
+ if (oparms->tcon->use_resilient) {
/* default timeout is 0, servers pick default (120 seconds) */
nr_ioctl_req.Timeout =
cpu_to_le32(oparms->tcon->handle_timeout);
@@ -139,7 +139,7 @@ smb2_unlock_range(struct cifsFileInfo *cfile, struct file_lock *flock,
cur = buf;
- down_write(&cinode->lock_sem);
+ cifs_down_write(&cinode->lock_sem);
list_for_each_entry_safe(li, tmp, &cfile->llist->locks, llist) {
if (flock->fl_start > li->offset ||
(flock->fl_start + length) <
diff --git a/fs/cifs/smb2misc.c b/fs/cifs/smb2misc.c
index e311f58dc1c8..2fc96f7923ee 100644
--- a/fs/cifs/smb2misc.c
+++ b/fs/cifs/smb2misc.c
@@ -509,15 +509,31 @@ cifs_ses_oplock_break(struct work_struct *work)
kfree(lw);
}
+static void
+smb2_queue_pending_open_break(struct tcon_link *tlink, __u8 *lease_key,
+ __le32 new_lease_state)
+{
+ struct smb2_lease_break_work *lw;
+
+ lw = kmalloc(sizeof(struct smb2_lease_break_work), GFP_KERNEL);
+ if (!lw) {
+ cifs_put_tlink(tlink);
+ return;
+ }
+
+ INIT_WORK(&lw->lease_break, cifs_ses_oplock_break);
+ lw->tlink = tlink;
+ lw->lease_state = new_lease_state;
+ memcpy(lw->lease_key, lease_key, SMB2_LEASE_KEY_SIZE);
+ queue_work(cifsiod_wq, &lw->lease_break);
+}
+
static bool
-smb2_tcon_has_lease(struct cifs_tcon *tcon, struct smb2_lease_break *rsp,
- struct smb2_lease_break_work *lw)
+smb2_tcon_has_lease(struct cifs_tcon *tcon, struct smb2_lease_break *rsp)
{
- bool found;
__u8 lease_state;
struct list_head *tmp;
struct cifsFileInfo *cfile;
- struct cifs_pending_open *open;
struct cifsInodeInfo *cinode;
int ack_req = le32_to_cpu(rsp->Flags &
SMB2_NOTIFY_BREAK_LEASE_FLAG_ACK_REQUIRED);
@@ -556,22 +572,29 @@ smb2_tcon_has_lease(struct cifs_tcon *tcon, struct smb2_lease_break *rsp,
&cinode->flags);
cifs_queue_oplock_break(cfile);
- kfree(lw);
return true;
}
- found = false;
+ return false;
+}
+
+static struct cifs_pending_open *
+smb2_tcon_find_pending_open_lease(struct cifs_tcon *tcon,
+ struct smb2_lease_break *rsp)
+{
+ __u8 lease_state = le32_to_cpu(rsp->NewLeaseState);
+ int ack_req = le32_to_cpu(rsp->Flags &
+ SMB2_NOTIFY_BREAK_LEASE_FLAG_ACK_REQUIRED);
+ struct cifs_pending_open *open;
+ struct cifs_pending_open *found = NULL;
+
list_for_each_entry(open, &tcon->pending_opens, olist) {
if (memcmp(open->lease_key, rsp->LeaseKey,
SMB2_LEASE_KEY_SIZE))
continue;
if (!found && ack_req) {
- found = true;
- memcpy(lw->lease_key, open->lease_key,
- SMB2_LEASE_KEY_SIZE);
- lw->tlink = cifs_get_tlink(open->tlink);
- queue_work(cifsiod_wq, &lw->lease_break);
+ found = open;
}
cifs_dbg(FYI, "found in the pending open list\n");
@@ -592,14 +615,7 @@ smb2_is_valid_lease_break(char *buffer)
struct TCP_Server_Info *server;
struct cifs_ses *ses;
struct cifs_tcon *tcon;
- struct smb2_lease_break_work *lw;
-
- lw = kmalloc(sizeof(struct smb2_lease_break_work), GFP_KERNEL);
- if (!lw)
- return false;
-
- INIT_WORK(&lw->lease_break, cifs_ses_oplock_break);
- lw->lease_state = rsp->NewLeaseState;
+ struct cifs_pending_open *open;
cifs_dbg(FYI, "Checking for lease break\n");
@@ -617,9 +633,25 @@ smb2_is_valid_lease_break(char *buffer)
spin_lock(&tcon->open_file_lock);
cifs_stats_inc(
&tcon->stats.cifs_stats.num_oplock_brks);
- if (smb2_tcon_has_lease(tcon, rsp, lw)) {
+ if (smb2_tcon_has_lease(tcon, rsp)) {
+ spin_unlock(&tcon->open_file_lock);
+ spin_unlock(&cifs_tcp_ses_lock);
+ return true;
+ }
+ open = smb2_tcon_find_pending_open_lease(tcon,
+ rsp);
+ if (open) {
+ __u8 lease_key[SMB2_LEASE_KEY_SIZE];
+ struct tcon_link *tlink;
+
+ tlink = cifs_get_tlink(open->tlink);
+ memcpy(lease_key, open->lease_key,
+ SMB2_LEASE_KEY_SIZE);
spin_unlock(&tcon->open_file_lock);
spin_unlock(&cifs_tcp_ses_lock);
+ smb2_queue_pending_open_break(tlink,
+ lease_key,
+ rsp->NewLeaseState);
return true;
}
spin_unlock(&tcon->open_file_lock);
@@ -639,7 +671,6 @@ smb2_is_valid_lease_break(char *buffer)
}
}
spin_unlock(&cifs_tcp_ses_lock);
- kfree(lw);
cifs_dbg(FYI, "Can not process lease break - no lease matched\n");
return false;
}
@@ -673,10 +704,10 @@ smb2_is_valid_oplock_break(char *buffer, struct TCP_Server_Info *server)
spin_lock(&cifs_tcp_ses_lock);
list_for_each(tmp, &server->smb_ses_list) {
ses = list_entry(tmp, struct cifs_ses, smb_ses_list);
+
list_for_each(tmp1, &ses->tcon_list) {
tcon = list_entry(tmp1, struct cifs_tcon, tcon_list);
- cifs_stats_inc(&tcon->stats.cifs_stats.num_oplock_brks);
spin_lock(&tcon->open_file_lock);
list_for_each(tmp2, &tcon->openFileList) {
cfile = list_entry(tmp2, struct cifsFileInfo,
@@ -688,6 +719,8 @@ smb2_is_valid_oplock_break(char *buffer, struct TCP_Server_Info *server)
continue;
cifs_dbg(FYI, "file id match, oplock break\n");
+ cifs_stats_inc(
+ &tcon->stats.cifs_stats.num_oplock_brks);
cinode = CIFS_I(d_inode(cfile->dentry));
spin_lock(&cfile->file_info_lock);
if (!CIFS_CACHE_WRITE(cinode) &&
@@ -720,9 +753,6 @@ smb2_is_valid_oplock_break(char *buffer, struct TCP_Server_Info *server)
return true;
}
spin_unlock(&tcon->open_file_lock);
- spin_unlock(&cifs_tcp_ses_lock);
- cifs_dbg(FYI, "No matching file for oplock break\n");
- return true;
}
}
spin_unlock(&cifs_tcp_ses_lock);
@@ -744,36 +774,67 @@ smb2_cancelled_close_fid(struct work_struct *work)
kfree(cancelled);
}
+/* Caller should already has an extra reference to @tcon */
+static int
+__smb2_handle_cancelled_close(struct cifs_tcon *tcon, __u64 persistent_fid,
+ __u64 volatile_fid)
+{
+ struct close_cancelled_open *cancelled;
+
+ cancelled = kzalloc(sizeof(*cancelled), GFP_ATOMIC);
+ if (!cancelled)
+ return -ENOMEM;
+
+ cancelled->fid.persistent_fid = persistent_fid;
+ cancelled->fid.volatile_fid = volatile_fid;
+ cancelled->tcon = tcon;
+ INIT_WORK(&cancelled->work, smb2_cancelled_close_fid);
+ WARN_ON(queue_work(cifsiod_wq, &cancelled->work) == false);
+
+ return 0;
+}
+
+int
+smb2_handle_cancelled_close(struct cifs_tcon *tcon, __u64 persistent_fid,
+ __u64 volatile_fid)
+{
+ int rc;
+
+ cifs_dbg(FYI, "%s: tc_count=%d\n", __func__, tcon->tc_count);
+ spin_lock(&cifs_tcp_ses_lock);
+ tcon->tc_count++;
+ spin_unlock(&cifs_tcp_ses_lock);
+
+ rc = __smb2_handle_cancelled_close(tcon, persistent_fid, volatile_fid);
+ if (rc)
+ cifs_put_tcon(tcon);
+
+ return rc;
+}
+
int
smb2_handle_cancelled_mid(char *buffer, struct TCP_Server_Info *server)
{
struct smb2_sync_hdr *sync_hdr = (struct smb2_sync_hdr *)buffer;
struct smb2_create_rsp *rsp = (struct smb2_create_rsp *)buffer;
struct cifs_tcon *tcon;
- struct close_cancelled_open *cancelled;
+ int rc;
if (sync_hdr->Command != SMB2_CREATE ||
sync_hdr->Status != STATUS_SUCCESS)
return 0;
- cancelled = kzalloc(sizeof(*cancelled), GFP_KERNEL);
- if (!cancelled)
- return -ENOMEM;
-
tcon = smb2_find_smb_tcon(server, sync_hdr->SessionId,
sync_hdr->TreeId);
- if (!tcon) {
- kfree(cancelled);
+ if (!tcon)
return -ENOENT;
- }
- cancelled->fid.persistent_fid = rsp->PersistentFileId;
- cancelled->fid.volatile_fid = rsp->VolatileFileId;
- cancelled->tcon = tcon;
- INIT_WORK(&cancelled->work, smb2_cancelled_close_fid);
- queue_work(cifsiod_wq, &cancelled->work);
+ rc = __smb2_handle_cancelled_close(tcon, rsp->PersistentFileId,
+ rsp->VolatileFileId);
+ if (rc)
+ cifs_put_tcon(tcon);
- return 0;
+ return rc;
}
/**
diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
index 0011e6bdaa9a..a71efe297244 100644
--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -151,13 +151,7 @@ smb2_get_credits_field(struct TCP_Server_Info *server, const int optype)
static unsigned int
smb2_get_credits(struct mid_q_entry *mid)
{
- struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)mid->resp_buf;
-
- if (mid->mid_state == MID_RESPONSE_RECEIVED
- || mid->mid_state == MID_RESPONSE_MALFORMED)
- return le16_to_cpu(shdr->CreditRequest);
-
- return 0;
+ return mid->credits_received;
}
static int
@@ -668,6 +662,11 @@ int open_shroot(unsigned int xid, struct cifs_tcon *tcon, struct cifs_fid *pfid)
if (smb3_encryption_required(tcon))
flags |= CIFS_TRANSFORM_REQ;
+ if (!server->ops->new_lease_key)
+ return -EIO;
+
+ server->ops->new_lease_key(pfid);
+
memset(rqst, 0, sizeof(rqst));
resp_buftype[0] = resp_buftype[1] = CIFS_NO_BUFFER;
memset(rsp_iov, 0, sizeof(rsp_iov));
@@ -735,6 +734,7 @@ int open_shroot(unsigned int xid, struct cifs_tcon *tcon, struct cifs_fid *pfid)
/* close extra handle outside of crit sec */
SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
}
+ rc = 0;
goto oshr_free;
}
@@ -1084,7 +1084,8 @@ smb2_set_ea(const unsigned int xid, struct cifs_tcon *tcon,
void *data[1];
struct smb2_file_full_ea_info *ea = NULL;
struct kvec close_iov[1];
- int rc;
+ struct smb2_query_info_rsp *rsp;
+ int rc, used_len = 0;
if (smb3_encryption_required(tcon))
flags |= CIFS_TRANSFORM_REQ;
@@ -1107,6 +1108,38 @@ smb2_set_ea(const unsigned int xid, struct cifs_tcon *tcon,
cifs_sb);
if (rc == -ENODATA)
goto sea_exit;
+ } else {
+ /* If we are adding a attribute we should first check
+ * if there will be enough space available to store
+ * the new EA. If not we should not add it since we
+ * would not be able to even read the EAs back.
+ */
+ rc = smb2_query_info_compound(xid, tcon, utf16_path,
+ FILE_READ_EA,
+ FILE_FULL_EA_INFORMATION,
+ SMB2_O_INFO_FILE,
+ CIFSMaxBufSize -
+ MAX_SMB2_CREATE_RESPONSE_SIZE -
+ MAX_SMB2_CLOSE_RESPONSE_SIZE,
+ &rsp_iov[1], &resp_buftype[1], cifs_sb);
+ if (rc == 0) {
+ rsp = (struct smb2_query_info_rsp *)rsp_iov[1].iov_base;
+ used_len = le32_to_cpu(rsp->OutputBufferLength);
+ }
+ free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
+ resp_buftype[1] = CIFS_NO_BUFFER;
+ memset(&rsp_iov[1], 0, sizeof(rsp_iov[1]));
+ rc = 0;
+
+ /* Use a fudge factor of 256 bytes in case we collide
+ * with a different set_EAs command.
+ */
+ if(CIFSMaxBufSize - MAX_SMB2_CREATE_RESPONSE_SIZE -
+ MAX_SMB2_CLOSE_RESPONSE_SIZE - 256 <
+ used_len + ea_name_len + ea_value_len + 1) {
+ rc = -ENOSPC;
+ goto sea_exit;
+ }
}
}
@@ -1455,7 +1488,9 @@ smb2_ioctl_query_info(const unsigned int xid,
COMPOUND_FID, COMPOUND_FID,
qi.info_type, true, buffer,
qi.output_buffer_length,
- CIFSMaxBufSize);
+ CIFSMaxBufSize -
+ MAX_SMB2_CREATE_RESPONSE_SIZE -
+ MAX_SMB2_CLOSE_RESPONSE_SIZE);
}
} else if (qi.flags == PASSTHRU_QUERY_INFO) {
memset(&qi_iov, 0, sizeof(qi_iov));
@@ -2546,7 +2581,10 @@ smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
rc = SMB2_ioctl_init(tcon, &rqst[1], fid.persistent_fid,
fid.volatile_fid, FSCTL_GET_REPARSE_POINT,
- true /* is_fctl */, NULL, 0, CIFSMaxBufSize);
+ true /* is_fctl */, NULL, 0,
+ CIFSMaxBufSize -
+ MAX_SMB2_CREATE_RESPONSE_SIZE -
+ MAX_SMB2_CLOSE_RESPONSE_SIZE);
if (rc)
goto querty_exit;
@@ -2850,6 +2888,11 @@ static long smb3_zero_range(struct file *file, struct cifs_tcon *tcon,
trace_smb3_zero_enter(xid, cfile->fid.persistent_fid, tcon->tid,
ses->Suid, offset, len);
+ /*
+ * We zero the range through ioctl, so we need remove the page caches
+ * first, otherwise the data may be inconsistent with the server.
+ */
+ truncate_pagecache_range(inode, offset, offset + len - 1);
/* if file not oplocked can't be sure whether asking to extend size */
if (!CIFS_CACHE_READ(cifsi))
@@ -2918,6 +2961,12 @@ static long smb3_punch_hole(struct file *file, struct cifs_tcon *tcon,
return rc;
}
+ /*
+ * We implement the punch hole through ioctl, so we need remove the page
+ * caches first, otherwise the data may be inconsistent with the server.
+ */
+ truncate_pagecache_range(inode, offset, offset + len - 1);
+
cifs_dbg(FYI, "Offset %lld len %lld\n", offset, len);
fsctl_buf.FileOffset = cpu_to_le64(offset);
@@ -3140,7 +3189,7 @@ static int smb3_fiemap(struct cifs_tcon *tcon,
if (rc)
goto out;
- if (out_data_len < sizeof(struct file_allocated_range_buffer)) {
+ if (out_data_len && out_data_len < sizeof(struct file_allocated_range_buffer)) {
rc = -EINVAL;
goto out;
}
diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
index a221536db0de..78f4cd690dc2 100644
--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@@ -252,7 +252,7 @@ smb2_reconnect(__le16 smb2_command, struct cifs_tcon *tcon)
if (tcon == NULL)
return 0;
- if (smb2_command == SMB2_TREE_CONNECT || smb2_command == SMB2_IOCTL)
+ if (smb2_command == SMB2_TREE_CONNECT)
return 0;
if (tcon->tidStatus == CifsExiting) {
@@ -312,7 +312,7 @@ smb2_reconnect(__le16 smb2_command, struct cifs_tcon *tcon)
if (server->tcpStatus != CifsNeedReconnect)
break;
- if (--retries)
+ if (retries && --retries)
continue;
/*
@@ -350,9 +350,14 @@ smb2_reconnect(__le16 smb2_command, struct cifs_tcon *tcon)
}
rc = cifs_negotiate_protocol(0, tcon->ses);
- if (!rc && tcon->ses->need_reconnect)
+ if (!rc && tcon->ses->need_reconnect) {
rc = cifs_setup_session(0, tcon->ses, nls_codepage);
-
+ if ((rc == -EACCES) && !tcon->retry) {
+ rc = -EHOSTDOWN;
+ mutex_unlock(&tcon->ses->session_mutex);
+ goto failed;
+ }
+ }
if (rc || !tcon->need_reconnect) {
mutex_unlock(&tcon->ses->session_mutex);
goto out;
@@ -397,6 +402,7 @@ out:
case SMB2_SET_INFO:
rc = -EAGAIN;
}
+failed:
unload_nls(nls_codepage);
return rc;
}
@@ -426,16 +432,9 @@ fill_small_buf(__le16 smb2_command, struct cifs_tcon *tcon, void *buf,
* SMB information in the SMB header. If the return code is zero, this
* function must have filled in request_buf pointer.
*/
-static int
-smb2_plain_req_init(__le16 smb2_command, struct cifs_tcon *tcon,
- void **request_buf, unsigned int *total_len)
+static int __smb2_plain_req_init(__le16 smb2_command, struct cifs_tcon *tcon,
+ void **request_buf, unsigned int *total_len)
{
- int rc;
-
- rc = smb2_reconnect(smb2_command, tcon);
- if (rc)
- return rc;
-
/* BB eventually switch this to SMB2 specific small buf size */
if (smb2_command == SMB2_SET_INFO)
*request_buf = cifs_buf_get();
@@ -456,7 +455,31 @@ smb2_plain_req_init(__le16 smb2_command, struct cifs_tcon *tcon,
cifs_stats_inc(&tcon->num_smbs_sent);
}
- return rc;
+ return 0;
+}
+
+static int smb2_plain_req_init(__le16 smb2_command, struct cifs_tcon *tcon,
+ void **request_buf, unsigned int *total_len)
+{
+ int rc;
+
+ rc = smb2_reconnect(smb2_command, tcon);
+ if (rc)
+ return rc;
+
+ return __smb2_plain_req_init(smb2_command, tcon, request_buf,
+ total_len);
+}
+
+static int smb2_ioctl_req_init(u32 opcode, struct cifs_tcon *tcon,
+ void **request_buf, unsigned int *total_len)
+{
+ /* Skip reconnect only for FSCTL_VALIDATE_NEGOTIATE_INFO IOCTLs */
+ if (opcode == FSCTL_VALIDATE_NEGOTIATE_INFO) {
+ return __smb2_plain_req_init(SMB2_IOCTL, tcon, request_buf,
+ total_len);
+ }
+ return smb2_plain_req_init(SMB2_IOCTL, tcon, request_buf, total_len);
}
/* For explanation of negotiate contexts see MS-SMB2 section 2.2.3.1 */
@@ -1275,6 +1298,8 @@ SMB2_auth_kerberos(struct SMB2_sess_data *sess_data)
spnego_key = cifs_get_spnego_key(ses);
if (IS_ERR(spnego_key)) {
rc = PTR_ERR(spnego_key);
+ if (rc == -ENOKEY)
+ cifs_dbg(VFS, "Verify user has a krb5 ticket and keyutils is installed\n");
spnego_key = NULL;
goto out;
}
@@ -2547,7 +2572,7 @@ SMB2_ioctl_init(struct cifs_tcon *tcon, struct smb_rqst *rqst,
int rc;
char *in_data_buf;
- rc = smb2_plain_req_init(SMB2_IOCTL, tcon, (void **) &req, &total_len);
+ rc = smb2_ioctl_req_init(opcode, tcon, (void **) &req, &total_len);
if (rc)
return rc;
@@ -2610,7 +2635,9 @@ SMB2_ioctl_init(struct cifs_tcon *tcon, struct smb_rqst *rqst,
* response size smaller.
*/
req->MaxOutputResponse = cpu_to_le32(max_response_size);
-
+ req->sync_hdr.CreditCharge =
+ cpu_to_le16(DIV_ROUND_UP(max(indatalen, max_response_size),
+ SMB2_MAX_BUFFER_SIZE));
if (is_fsctl)
req->Flags = cpu_to_le32(SMB2_0_IOCTL_IS_FSCTL);
else
@@ -2852,7 +2879,21 @@ int
SMB2_close(const unsigned int xid, struct cifs_tcon *tcon,
u64 persistent_fid, u64 volatile_fid)
{
- return SMB2_close_flags(xid, tcon, persistent_fid, volatile_fid, 0);
+ int rc;
+ int tmp_rc;
+
+ rc = SMB2_close_flags(xid, tcon, persistent_fid, volatile_fid, 0);
+
+ /* retry close in a worker thread if this one is interrupted */
+ if (rc == -EINTR) {
+ tmp_rc = smb2_handle_cancelled_close(tcon, persistent_fid,
+ volatile_fid);
+ if (tmp_rc)
+ cifs_dbg(VFS, "handle cancelled close fid 0x%llx returned error %d\n",
+ persistent_fid, tmp_rc);
+ }
+
+ return rc;
}
int
@@ -3645,6 +3686,9 @@ smb2_writev_callback(struct mid_q_entry *mid)
wdata->cfile->fid.persistent_fid,
tcon->tid, tcon->ses->Suid, wdata->offset,
wdata->bytes, wdata->result);
+ if (wdata->result == -ENOSPC)
+ printk_once(KERN_WARNING "Out of space writing to %s\n",
+ tcon->treeName);
} else
trace_smb3_write_done(0 /* no xid */,
wdata->cfile->fid.persistent_fid,
diff --git a/fs/cifs/smb2pdu.h b/fs/cifs/smb2pdu.h
index 858353d20c39..06e4bfac68cc 100644
--- a/fs/cifs/smb2pdu.h
+++ b/fs/cifs/smb2pdu.h
@@ -816,6 +816,7 @@ struct create_durable_handle_reconnect_v2 {
struct create_context ccontext;
__u8 Name[8];
struct durable_reconnect_context_v2 dcontext;
+ __u8 Pad[4];
} __packed;
/* See MS-SMB2 2.2.13.2.5 */
diff --git a/fs/cifs/smb2proto.h b/fs/cifs/smb2proto.h
index 52df125e9189..2e07c2917947 100644
--- a/fs/cifs/smb2proto.h
+++ b/fs/cifs/smb2proto.h
@@ -203,6 +203,9 @@ extern int SMB2_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
extern int SMB2_oplock_break(const unsigned int xid, struct cifs_tcon *tcon,
const u64 persistent_fid, const u64 volatile_fid,
const __u8 oplock_level);
+extern int smb2_handle_cancelled_close(struct cifs_tcon *tcon,
+ __u64 persistent_fid,
+ __u64 volatile_fid);
extern int smb2_handle_cancelled_mid(char *buffer,
struct TCP_Server_Info *server);
void smb2_cancelled_close_fid(struct work_struct *work);
diff --git a/fs/cifs/smb2transport.c b/fs/cifs/smb2transport.c
index d1181572758b..b9ccef97406d 100644
--- a/fs/cifs/smb2transport.c
+++ b/fs/cifs/smb2transport.c
@@ -597,6 +597,8 @@ smb2_mid_entry_alloc(const struct smb2_sync_hdr *shdr,
* The default is for the mid to be synchronous, so the
* default callback just wakes up the current task.
*/
+ get_task_struct(current);
+ temp->creator = current;
temp->callback = cifs_wake_up_task;
temp->callback_data = current;
diff --git a/fs/cifs/smbdirect.c b/fs/cifs/smbdirect.c
index cd07e5301d42..8d1dcf842f28 100644
--- a/fs/cifs/smbdirect.c
+++ b/fs/cifs/smbdirect.c
@@ -1069,7 +1069,7 @@ static int smbd_post_send_data(
if (n_vec > SMBDIRECT_MAX_SGE) {
cifs_dbg(VFS, "Can't fit data to SGL, n_vec=%d\n", n_vec);
- return -ENOMEM;
+ return -EINVAL;
}
sg_init_table(sgl, n_vec);
@@ -1476,6 +1476,7 @@ void smbd_destroy(struct TCP_Server_Info *server)
info->transport_status = SMBD_DESTROYED;
destroy_workqueue(info->workqueue);
+ log_rdma_event(INFO, "rdma session destroyed\n");
kfree(info);
}
@@ -1505,8 +1506,9 @@ create_conn:
log_rdma_event(INFO, "creating rdma session\n");
server->smbd_conn = smbd_get_connection(
server, (struct sockaddr *) &server->dstaddr);
- log_rdma_event(INFO, "created rdma session info=%p\n",
- server->smbd_conn);
+
+ if (server->smbd_conn)
+ cifs_dbg(VFS, "RDMA transport re-established\n");
return server->smbd_conn ? 0 : -ENOENT;
}
@@ -1968,7 +1970,7 @@ read_rfc1002_done:
if (info->transport_status != SMBD_CONNECTED) {
log_read(ERR, "disconnected\n");
- return 0;
+ return -ECONNABORTED;
}
goto again;
@@ -2267,12 +2269,7 @@ static void smbd_mr_recovery_work(struct work_struct *work)
int rc;
list_for_each_entry(smbdirect_mr, &info->mr_list, list) {
- if (smbdirect_mr->state == MR_INVALIDATED)
- ib_dma_unmap_sg(
- info->id->device, smbdirect_mr->sgl,
- smbdirect_mr->sgl_count,
- smbdirect_mr->dir);
- else if (smbdirect_mr->state == MR_ERROR) {
+ if (smbdirect_mr->state == MR_ERROR) {
/* recover this MR entry */
rc = ib_dereg_mr(smbdirect_mr->mr);
@@ -2600,11 +2597,20 @@ int smbd_deregister_mr(struct smbd_mr *smbdirect_mr)
*/
smbdirect_mr->state = MR_INVALIDATED;
- /*
- * Schedule the work to do MR recovery for future I/Os
- * MR recovery is slow and we don't want it to block the current I/O
- */
- queue_work(info->workqueue, &info->mr_recovery_work);
+ if (smbdirect_mr->state == MR_INVALIDATED) {
+ ib_dma_unmap_sg(
+ info->id->device, smbdirect_mr->sgl,
+ smbdirect_mr->sgl_count,
+ smbdirect_mr->dir);
+ smbdirect_mr->state = MR_READY;
+ if (atomic_inc_return(&info->mr_ready_count) == 1)
+ wake_up_interruptible(&info->wait_mr);
+ } else
+ /*
+ * Schedule the work to do MR recovery for future I/Os MR
+ * recovery is slow and don't want it to block current I/O
+ */
+ queue_work(info->workqueue, &info->mr_recovery_work);
done:
if (atomic_dec_and_test(&info->mr_used_count))
diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c
index 60661b3f983a..44079b1a0456 100644
--- a/fs/cifs/transport.c
+++ b/fs/cifs/transport.c
@@ -76,6 +76,8 @@ AllocMidQEntry(const struct smb_hdr *smb_buffer, struct TCP_Server_Info *server)
* The default is for the mid to be synchronous, so the
* default callback just wakes up the current task.
*/
+ get_task_struct(current);
+ temp->creator = current;
temp->callback = cifs_wake_up_task;
temp->callback_data = current;
@@ -86,29 +88,21 @@ AllocMidQEntry(const struct smb_hdr *smb_buffer, struct TCP_Server_Info *server)
static void _cifs_mid_q_entry_release(struct kref *refcount)
{
- struct mid_q_entry *mid = container_of(refcount, struct mid_q_entry,
- refcount);
-
- mempool_free(mid, cifs_mid_poolp);
-}
-
-void cifs_mid_q_entry_release(struct mid_q_entry *midEntry)
-{
- spin_lock(&GlobalMid_Lock);
- kref_put(&midEntry->refcount, _cifs_mid_q_entry_release);
- spin_unlock(&GlobalMid_Lock);
-}
-
-void
-DeleteMidQEntry(struct mid_q_entry *midEntry)
-{
+ struct mid_q_entry *midEntry =
+ container_of(refcount, struct mid_q_entry, refcount);
#ifdef CONFIG_CIFS_STATS2
__le16 command = midEntry->server->vals->lock_cmd;
__u16 smb_cmd = le16_to_cpu(midEntry->command);
unsigned long now;
unsigned long roundtrip_time;
- struct TCP_Server_Info *server = midEntry->server;
#endif
+ struct TCP_Server_Info *server = midEntry->server;
+
+ if (midEntry->resp_buf && (midEntry->mid_flags & MID_WAIT_CANCELLED) &&
+ midEntry->mid_state == MID_RESPONSE_RECEIVED &&
+ server->ops->handle_cancelled_mid)
+ server->ops->handle_cancelled_mid(midEntry->resp_buf, server);
+
midEntry->mid_state = MID_FREE;
atomic_dec(&midCount);
if (midEntry->large_buf)
@@ -166,6 +160,20 @@ DeleteMidQEntry(struct mid_q_entry *midEntry)
}
}
#endif
+ put_task_struct(midEntry->creator);
+
+ mempool_free(midEntry, cifs_mid_poolp);
+}
+
+void cifs_mid_q_entry_release(struct mid_q_entry *midEntry)
+{
+ spin_lock(&GlobalMid_Lock);
+ kref_put(&midEntry->refcount, _cifs_mid_q_entry_release);
+ spin_unlock(&GlobalMid_Lock);
+}
+
+void DeleteMidQEntry(struct mid_q_entry *midEntry)
+{
cifs_mid_q_entry_release(midEntry);
}
@@ -173,8 +181,10 @@ void
cifs_delete_mid(struct mid_q_entry *mid)
{
spin_lock(&GlobalMid_Lock);
- list_del_init(&mid->qhead);
- mid->mid_flags |= MID_DELETED;
+ if (!(mid->mid_flags & MID_DELETED)) {
+ list_del_init(&mid->qhead);
+ mid->mid_flags |= MID_DELETED;
+ }
spin_unlock(&GlobalMid_Lock);
DeleteMidQEntry(mid);
@@ -318,8 +328,11 @@ __smb_send_rqst(struct TCP_Server_Info *server, int num_rqst,
int val = 1;
__be32 rfc1002_marker;
- if (cifs_rdma_enabled(server) && server->smbd_conn) {
- rc = smbd_send(server, num_rqst, rqst);
+ if (cifs_rdma_enabled(server)) {
+ /* return -EAGAIN when connecting or reconnecting */
+ rc = -EAGAIN;
+ if (server->smbd_conn)
+ rc = smbd_send(server, num_rqst, rqst);
goto smbd_done;
}
@@ -453,7 +466,7 @@ smb_send_rqst(struct TCP_Server_Info *server, int num_rqst,
struct smb_rqst *rqst, int flags)
{
struct kvec iov;
- struct smb2_transform_hdr tr_hdr;
+ struct smb2_transform_hdr *tr_hdr;
struct smb_rqst cur_rqst[MAX_COMPOUND];
int rc;
@@ -463,28 +476,34 @@ smb_send_rqst(struct TCP_Server_Info *server, int num_rqst,
if (num_rqst > MAX_COMPOUND - 1)
return -ENOMEM;
- memset(&cur_rqst[0], 0, sizeof(cur_rqst));
- memset(&iov, 0, sizeof(iov));
- memset(&tr_hdr, 0, sizeof(tr_hdr));
-
- iov.iov_base = &tr_hdr;
- iov.iov_len = sizeof(tr_hdr);
- cur_rqst[0].rq_iov = &iov;
- cur_rqst[0].rq_nvec = 1;
-
if (!server->ops->init_transform_rq) {
cifs_dbg(VFS, "Encryption requested but transform callback "
"is missing\n");
return -EIO;
}
+ tr_hdr = kmalloc(sizeof(*tr_hdr), GFP_NOFS);
+ if (!tr_hdr)
+ return -ENOMEM;
+
+ memset(&cur_rqst[0], 0, sizeof(cur_rqst));
+ memset(&iov, 0, sizeof(iov));
+ memset(tr_hdr, 0, sizeof(*tr_hdr));
+
+ iov.iov_base = tr_hdr;
+ iov.iov_len = sizeof(*tr_hdr);
+ cur_rqst[0].rq_iov = &iov;
+ cur_rqst[0].rq_nvec = 1;
+
rc = server->ops->init_transform_rq(server, num_rqst + 1,
&cur_rqst[0], rqst);
if (rc)
- return rc;
+ goto out;
rc = __smb_send_rqst(server, num_rqst + 1, &cur_rqst[0]);
smb3_free_compound_rqst(num_rqst, &cur_rqst[1]);
+out:
+ kfree(tr_hdr);
return rc;
}
@@ -509,7 +528,7 @@ wait_for_free_credits(struct TCP_Server_Info *server, const int num_credits,
const int timeout, const int flags,
unsigned int *instance)
{
- int rc;
+ long rc;
int *credits;
int optype;
long int t;
@@ -868,7 +887,10 @@ cifs_sync_mid_result(struct mid_q_entry *mid, struct TCP_Server_Info *server)
rc = -EHOSTDOWN;
break;
default:
- list_del_init(&mid->qhead);
+ if (!(mid->mid_flags & MID_DELETED)) {
+ list_del_init(&mid->qhead);
+ mid->mid_flags |= MID_DELETED;
+ }
cifs_dbg(VFS, "%s: invalid mid state mid=%llu state=%d\n",
__func__, mid->mid, mid->mid_state);
rc = -EIO;
@@ -1109,8 +1131,8 @@ compound_send_recv(const unsigned int xid, struct cifs_ses *ses,
midQ[i]->mid, le16_to_cpu(midQ[i]->command));
send_cancel(ses->server, &rqst[i], midQ[i]);
spin_lock(&GlobalMid_Lock);
+ midQ[i]->mid_flags |= MID_WAIT_CANCELLED;
if (midQ[i]->mid_state == MID_REQUEST_SUBMITTED) {
- midQ[i]->mid_flags |= MID_WAIT_CANCELLED;
midQ[i]->callback = cifs_cancelled_callback;
cancelled_mid[i] = true;
credits[i].value = 0;
generated by cgit 1.2.3-korg (git 2.39.0) at 2024-04-27 11:38:13 +0000