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-rw-r--r--fs/cifs/cifs_debug.c33
-rw-r--r--fs/cifs/cifsfs.c3
-rw-r--r--fs/cifs/cifsfs.h4
-rw-r--r--fs/cifs/cifsglob.h27
-rw-r--r--fs/cifs/cifsproto.h9
-rw-r--r--fs/cifs/cifssmb.c98
-rw-r--r--fs/cifs/connect.c63
-rw-r--r--fs/cifs/dfs_cache.c140
-rw-r--r--fs/cifs/dfs_cache.h5
-rw-r--r--fs/cifs/file.c5
-rw-r--r--fs/cifs/inode.c37
-rw-r--r--fs/cifs/link.c13
-rw-r--r--fs/cifs/smb1ops.c9
-rw-r--r--fs/cifs/smb2ops.c309
-rw-r--r--fs/cifs/smb2pdu.c72
-rw-r--r--fs/cifs/smb2pdu.h71
-rw-r--r--fs/cifs/smb2status.h3480
-rw-r--r--fs/cifs/smbdirect.c292
-rw-r--r--fs/cifs/smbdirect.h19
-rw-r--r--fs/cifs/smbfsctl.h29
-rw-r--r--fs/cifs/transport.c48
21 files changed, 2582 insertions, 2184 deletions
diff --git a/fs/cifs/cifs_debug.c b/fs/cifs/cifs_debug.c
index 13c1288b04a7..6a69f11aacf7 100644
--- a/fs/cifs/cifs_debug.c
+++ b/fs/cifs/cifs_debug.c
@@ -312,12 +312,10 @@ static int cifs_debug_data_proc_show(struct seq_file *m, void *v)
atomic_read(&server->smbd_conn->send_credits),
atomic_read(&server->smbd_conn->receive_credits),
server->smbd_conn->receive_credit_target);
- seq_printf(m, "\nPending send_pending: %x send_payload_pending:"
- " %x smbd_send_pending: %x smbd_recv_pending: %x",
+ seq_printf(m, "\nPending send_pending: %x "
+ "send_payload_pending: %x",
atomic_read(&server->smbd_conn->send_pending),
- atomic_read(&server->smbd_conn->send_payload_pending),
- server->smbd_conn->smbd_send_pending,
- server->smbd_conn->smbd_recv_pending);
+ atomic_read(&server->smbd_conn->send_payload_pending));
seq_printf(m, "\nReceive buffers count_receive_queue: %x "
"count_empty_packet_queue: %x",
server->smbd_conn->count_receive_queue,
@@ -334,6 +332,12 @@ skip_rdma:
#endif
seq_printf(m, "\nNumber of credits: %d Dialect 0x%x",
server->credits, server->dialect);
+ if (server->compress_algorithm == SMB3_COMPRESS_LZNT1)
+ seq_printf(m, " COMPRESS_LZNT1");
+ else if (server->compress_algorithm == SMB3_COMPRESS_LZ77)
+ seq_printf(m, " COMPRESS_LZ77");
+ else if (server->compress_algorithm == SMB3_COMPRESS_LZ77_HUFF)
+ seq_printf(m, " COMPRESS_LZ77_HUFF");
if (server->sign)
seq_printf(m, " signed");
if (server->posix_ext_supported)
@@ -462,8 +466,13 @@ static ssize_t cifs_stats_proc_write(struct file *file,
server = list_entry(tmp1, struct TCP_Server_Info,
tcp_ses_list);
#ifdef CONFIG_CIFS_STATS2
- for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++)
+ for (i = 0; i < NUMBER_OF_SMB2_COMMANDS; i++) {
+ atomic_set(&server->num_cmds[i], 0);
atomic_set(&server->smb2slowcmd[i], 0);
+ server->time_per_cmd[i] = 0;
+ server->slowest_cmd[i] = 0;
+ server->fastest_cmd[0] = 0;
+ }
#endif /* CONFIG_CIFS_STATS2 */
list_for_each(tmp2, &server->smb_ses_list) {
ses = list_entry(tmp2, struct cifs_ses,
@@ -531,9 +540,19 @@ static int cifs_stats_proc_show(struct seq_file *m, void *v)
server = list_entry(tmp1, struct TCP_Server_Info,
tcp_ses_list);
#ifdef CONFIG_CIFS_STATS2
+ seq_puts(m, "\nTotal time spent processing by command. Time ");
+ seq_printf(m, "units are jiffies (%d per second)\n", HZ);
+ seq_puts(m, " SMB3 CMD\tNumber\tTotal Time\tFastest\tSlowest\n");
+ seq_puts(m, " --------\t------\t----------\t-------\t-------\n");
+ for (j = 0; j < NUMBER_OF_SMB2_COMMANDS; j++)
+ seq_printf(m, " %d\t\t%d\t%llu\t\t%u\t%u\n", j,
+ atomic_read(&server->num_cmds[j]),
+ server->time_per_cmd[j],
+ server->fastest_cmd[j],
+ server->slowest_cmd[j]);
for (j = 0; j < NUMBER_OF_SMB2_COMMANDS; j++)
if (atomic_read(&server->smb2slowcmd[j]))
- seq_printf(m, "%d slow responses from %s for command %d\n",
+ seq_printf(m, " %d slow responses from %s for command %d\n",
atomic_read(&server->smb2slowcmd[j]),
server->hostname, j);
#endif /* STATS2 */
diff --git a/fs/cifs/cifsfs.c b/fs/cifs/cifsfs.c
index 877174761efb..b1a5fcfa3ce1 100644
--- a/fs/cifs/cifsfs.c
+++ b/fs/cifs/cifsfs.c
@@ -483,6 +483,8 @@ cifs_show_options(struct seq_file *s, struct dentry *root)
seq_puts(s, ",seal");
if (tcon->nocase)
seq_puts(s, ",nocase");
+ if (tcon->local_lease)
+ seq_puts(s, ",locallease");
if (tcon->retry)
seq_puts(s, ",hard");
else
@@ -984,6 +986,7 @@ const struct inode_operations cifs_file_inode_ops = {
.getattr = cifs_getattr,
.permission = cifs_permission,
.listxattr = cifs_listxattr,
+ .fiemap = cifs_fiemap,
};
const struct inode_operations cifs_symlink_inode_ops = {
diff --git a/fs/cifs/cifsfs.h b/fs/cifs/cifsfs.h
index 5c0298b9998f..aea005703785 100644
--- a/fs/cifs/cifsfs.h
+++ b/fs/cifs/cifsfs.h
@@ -84,6 +84,8 @@ extern int cifs_revalidate_mapping(struct inode *inode);
extern int cifs_zap_mapping(struct inode *inode);
extern int cifs_getattr(const struct path *, struct kstat *, u32, unsigned int);
extern int cifs_setattr(struct dentry *, struct iattr *);
+extern int cifs_fiemap(struct inode *, struct fiemap_extent_info *, u64 start,
+ u64 len);
extern const struct inode_operations cifs_file_inode_ops;
extern const struct inode_operations cifs_symlink_inode_ops;
@@ -150,5 +152,5 @@ extern long cifs_ioctl(struct file *filep, unsigned int cmd, unsigned long arg);
extern const struct export_operations cifs_export_ops;
#endif /* CONFIG_CIFS_NFSD_EXPORT */
-#define CIFS_VERSION "2.19"
+#define CIFS_VERSION "2.20"
#endif /* _CIFSFS_H */
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index 585ad3207cb1..33c251b408aa 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -355,7 +355,8 @@ struct smb_version_operations {
struct cifs_sb_info *);
/* query symlink target */
int (*query_symlink)(const unsigned int, struct cifs_tcon *,
- const char *, char **, struct cifs_sb_info *);
+ struct cifs_sb_info *, const char *,
+ char **, bool);
/* open a file for non-posix mounts */
int (*open)(const unsigned int, struct cifs_open_parms *,
__u32 *, FILE_ALL_INFO *);
@@ -493,6 +494,9 @@ struct smb_version_operations {
char *full_path,
umode_t mode,
dev_t device_number);
+ /* version specific fiemap implementation */
+ int (*fiemap)(struct cifs_tcon *tcon, struct cifsFileInfo *,
+ struct fiemap_extent_info *, u64, u64);
};
struct smb_version_values {
@@ -596,6 +600,10 @@ struct smb_vol {
unsigned int max_credits; /* smb3 max_credits 10 < credits < 60000 */
};
+/**
+ * CIFS superblock mount flags (mnt_cifs_flags) to consider when
+ * trying to reuse existing superblock for a new mount
+ */
#define CIFS_MOUNT_MASK (CIFS_MOUNT_NO_PERM | CIFS_MOUNT_SET_UID | \
CIFS_MOUNT_SERVER_INUM | CIFS_MOUNT_DIRECT_IO | \
CIFS_MOUNT_NO_XATTR | CIFS_MOUNT_MAP_SPECIAL_CHR | \
@@ -606,8 +614,13 @@ struct smb_vol {
CIFS_MOUNT_NOPOSIXBRL | CIFS_MOUNT_NOSSYNC | \
CIFS_MOUNT_FSCACHE | CIFS_MOUNT_MF_SYMLINKS | \
CIFS_MOUNT_MULTIUSER | CIFS_MOUNT_STRICT_IO | \
- CIFS_MOUNT_CIFS_BACKUPUID | CIFS_MOUNT_CIFS_BACKUPGID)
+ CIFS_MOUNT_CIFS_BACKUPUID | CIFS_MOUNT_CIFS_BACKUPGID | \
+ CIFS_MOUNT_NO_DFS)
+/**
+ * Generic VFS superblock mount flags (s_flags) to consider when
+ * trying to reuse existing superblock for a new mount
+ */
#define CIFS_MS_MASK (SB_RDONLY | SB_MANDLOCK | SB_NOEXEC | SB_NOSUID | \
SB_NODEV | SB_SYNCHRONOUS)
@@ -714,10 +727,15 @@ struct TCP_Server_Info {
#ifdef CONFIG_CIFS_STATS2
atomic_t in_send; /* requests trying to send */
atomic_t num_waiters; /* blocked waiting to get in sendrecv */
+ atomic_t num_cmds[NUMBER_OF_SMB2_COMMANDS]; /* total requests by cmd */
atomic_t smb2slowcmd[NUMBER_OF_SMB2_COMMANDS]; /* count resps > 1 sec */
+ __u64 time_per_cmd[NUMBER_OF_SMB2_COMMANDS]; /* total time per cmd */
+ __u32 slowest_cmd[NUMBER_OF_SMB2_COMMANDS];
+ __u32 fastest_cmd[NUMBER_OF_SMB2_COMMANDS];
#endif /* STATS2 */
unsigned int max_read;
unsigned int max_write;
+ __le16 compress_algorithm;
__le16 cipher_type;
/* save initital negprot hash */
__u8 preauth_sha_hash[SMB2_PREAUTH_HASH_SIZE];
@@ -1673,11 +1691,11 @@ static inline bool is_retryable_error(int error)
/* Type of Request to SendReceive2 */
#define CIFS_BLOCKING_OP 1 /* operation can block */
-#define CIFS_ASYNC_OP 2 /* do not wait for response */
+#define CIFS_NON_BLOCKING 2 /* do not block waiting for credits */
#define CIFS_TIMEOUT_MASK 0x003 /* only one of above set in req */
#define CIFS_LOG_ERROR 0x010 /* log NT STATUS if non-zero */
#define CIFS_LARGE_BUF_OP 0x020 /* large request buffer */
-#define CIFS_NO_RESP 0x040 /* no response buffer required */
+#define CIFS_NO_RSP_BUF 0x040 /* no response buffer required */
/* Type of request operation */
#define CIFS_ECHO_OP 0x080 /* echo request */
@@ -1687,6 +1705,7 @@ static inline bool is_retryable_error(int error)
#define CIFS_HAS_CREDITS 0x0400 /* already has credits */
#define CIFS_TRANSFORM_REQ 0x0800 /* transform request before sending */
+#define CIFS_NO_SRV_RSP 0x1000 /* there is no server response */
/* Security Flags: indicate type of session setup needed */
#define CIFSSEC_MAY_SIGN 0x00001
diff --git a/fs/cifs/cifsproto.h b/fs/cifs/cifsproto.h
index 4f96b3b00a7a..e23234207fc2 100644
--- a/fs/cifs/cifsproto.h
+++ b/fs/cifs/cifsproto.h
@@ -526,12 +526,21 @@ extern int E_md4hash(const unsigned char *passwd, unsigned char *p16,
const struct nls_table *codepage);
extern int SMBencrypt(unsigned char *passwd, const unsigned char *c8,
unsigned char *p24);
+
+extern int
+cifs_setup_volume_info(struct smb_vol *volume_info, char *mount_data,
+ const char *devname, bool is_smb3);
extern void
cifs_cleanup_volume_info_contents(struct smb_vol *volume_info);
extern struct TCP_Server_Info *
cifs_find_tcp_session(struct smb_vol *vol);
+extern void cifs_put_smb_ses(struct cifs_ses *ses);
+
+extern struct cifs_ses *
+cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb_vol *volume_info);
+
void cifs_readdata_release(struct kref *refcount);
int cifs_async_readv(struct cifs_readdata *rdata);
int cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid);
diff --git a/fs/cifs/cifssmb.c b/fs/cifs/cifssmb.c
index f43747c062a7..1fbd92843a73 100644
--- a/fs/cifs/cifssmb.c
+++ b/fs/cifs/cifssmb.c
@@ -860,7 +860,7 @@ CIFSSMBEcho(struct TCP_Server_Info *server)
iov[1].iov_base = (char *)smb + 4;
rc = cifs_call_async(server, &rqst, NULL, cifs_echo_callback, NULL,
- server, CIFS_ASYNC_OP | CIFS_ECHO_OP, NULL);
+ server, CIFS_NON_BLOCKING | CIFS_ECHO_OP, NULL);
if (rc)
cifs_dbg(FYI, "Echo request failed: %d\n", rc);
@@ -2508,8 +2508,8 @@ int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon,
iov[1].iov_len = (num_unlock + num_lock) * sizeof(LOCKING_ANDX_RANGE);
cifs_stats_inc(&tcon->stats.cifs_stats.num_locks);
- rc = SendReceive2(xid, tcon->ses, iov, 2, &resp_buf_type, CIFS_NO_RESP,
- &rsp_iov);
+ rc = SendReceive2(xid, tcon->ses, iov, 2, &resp_buf_type,
+ CIFS_NO_RSP_BUF, &rsp_iov);
cifs_small_buf_release(pSMB);
if (rc)
cifs_dbg(FYI, "Send error in cifs_lockv = %d\n", rc);
@@ -2540,7 +2540,7 @@ CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon,
if (lockType == LOCKING_ANDX_OPLOCK_RELEASE) {
/* no response expected */
- flags = CIFS_ASYNC_OP | CIFS_OBREAK_OP;
+ flags = CIFS_NO_SRV_RSP | CIFS_NON_BLOCKING | CIFS_OBREAK_OP;
pSMB->Timeout = 0;
} else if (waitFlag) {
flags = CIFS_BLOCKING_OP; /* blocking operation, no timeout */
@@ -6567,93 +6567,3 @@ SetEARetry:
return rc;
}
#endif
-
-#ifdef CONFIG_CIFS_DNOTIFY_EXPERIMENTAL /* BB unused temporarily */
-/*
- * Years ago the kernel added a "dnotify" function for Samba server,
- * to allow network clients (such as Windows) to display updated
- * lists of files in directory listings automatically when
- * files are added by one user when another user has the
- * same directory open on their desktop. The Linux cifs kernel
- * client hooked into the kernel side of this interface for
- * the same reason, but ironically when the VFS moved from
- * "dnotify" to "inotify" it became harder to plug in Linux
- * network file system clients (the most obvious use case
- * for notify interfaces is when multiple users can update
- * the contents of the same directory - exactly what network
- * file systems can do) although the server (Samba) could
- * still use it. For the short term we leave the worker
- * function ifdeffed out (below) until inotify is fixed
- * in the VFS to make it easier to plug in network file
- * system clients. If inotify turns out to be permanently
- * incompatible for network fs clients, we could instead simply
- * expose this config flag by adding a future cifs (and smb2) notify ioctl.
- */
-int CIFSSMBNotify(const unsigned int xid, struct cifs_tcon *tcon,
- const int notify_subdirs, const __u16 netfid,
- __u32 filter, struct file *pfile, int multishot,
- const struct nls_table *nls_codepage)
-{
- int rc = 0;
- struct smb_com_transaction_change_notify_req *pSMB = NULL;
- struct smb_com_ntransaction_change_notify_rsp *pSMBr = NULL;
- struct dir_notify_req *dnotify_req;
- int bytes_returned;
-
- cifs_dbg(FYI, "In CIFSSMBNotify for file handle %d\n", (int)netfid);
- rc = smb_init(SMB_COM_NT_TRANSACT, 23, tcon, (void **) &pSMB,
- (void **) &pSMBr);
- if (rc)
- return rc;
-
- pSMB->TotalParameterCount = 0 ;
- pSMB->TotalDataCount = 0;
- pSMB->MaxParameterCount = cpu_to_le32(2);
- pSMB->MaxDataCount = cpu_to_le32(CIFSMaxBufSize & 0xFFFFFF00);
- pSMB->MaxSetupCount = 4;
- pSMB->Reserved = 0;
- pSMB->ParameterOffset = 0;
- pSMB->DataCount = 0;
- pSMB->DataOffset = 0;
- pSMB->SetupCount = 4; /* single byte does not need le conversion */
- pSMB->SubCommand = cpu_to_le16(NT_TRANSACT_NOTIFY_CHANGE);
- pSMB->ParameterCount = pSMB->TotalParameterCount;
- if (notify_subdirs)
- pSMB->WatchTree = 1; /* one byte - no le conversion needed */
- pSMB->Reserved2 = 0;
- pSMB->CompletionFilter = cpu_to_le32(filter);
- pSMB->Fid = netfid; /* file handle always le */
- pSMB->ByteCount = 0;
-
- rc = SendReceive(xid, tcon->ses, (struct smb_hdr *) pSMB,
- (struct smb_hdr *)pSMBr, &bytes_returned,
- CIFS_ASYNC_OP);
- if (rc) {
- cifs_dbg(FYI, "Error in Notify = %d\n", rc);
- } else {
- /* Add file to outstanding requests */
- /* BB change to kmem cache alloc */
- dnotify_req = kmalloc(
- sizeof(struct dir_notify_req),
- GFP_KERNEL);
- if (dnotify_req) {
- dnotify_req->Pid = pSMB->hdr.Pid;
- dnotify_req->PidHigh = pSMB->hdr.PidHigh;
- dnotify_req->Mid = pSMB->hdr.Mid;
- dnotify_req->Tid = pSMB->hdr.Tid;
- dnotify_req->Uid = pSMB->hdr.Uid;
- dnotify_req->netfid = netfid;
- dnotify_req->pfile = pfile;
- dnotify_req->filter = filter;
- dnotify_req->multishot = multishot;
- spin_lock(&GlobalMid_Lock);
- list_add_tail(&dnotify_req->lhead,
- &GlobalDnotifyReqList);
- spin_unlock(&GlobalMid_Lock);
- } else
- rc = -ENOMEM;
- }
- cifs_buf_release(pSMB);
- return rc;
-}
-#endif /* was needed for dnotify, and will be needed for inotify when VFS fix */
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 4c0e44489f21..084756cfdaee 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -323,8 +323,6 @@ static int ip_connect(struct TCP_Server_Info *server);
static int generic_ip_connect(struct TCP_Server_Info *server);
static void tlink_rb_insert(struct rb_root *root, struct tcon_link *new_tlink);
static void cifs_prune_tlinks(struct work_struct *work);
-static int cifs_setup_volume_info(struct smb_vol *volume_info, char *mount_data,
- const char *devname, bool is_smb3);
static char *extract_hostname(const char *unc);
/*
@@ -530,21 +528,6 @@ cifs_reconnect(struct TCP_Server_Info *server)
/* do not want to be sending data on a socket we are freeing */
cifs_dbg(FYI, "%s: tearing down socket\n", __func__);
mutex_lock(&server->srv_mutex);
- if (server->ssocket) {
- cifs_dbg(FYI, "State: 0x%x Flags: 0x%lx\n",
- server->ssocket->state, server->ssocket->flags);
- kernel_sock_shutdown(server->ssocket, SHUT_WR);
- cifs_dbg(FYI, "Post shutdown state: 0x%x Flags: 0x%lx\n",
- server->ssocket->state, server->ssocket->flags);
- sock_release(server->ssocket);
- server->ssocket = NULL;
- }
- server->sequence_number = 0;
- server->session_estab = false;
- kfree(server->session_key.response);
- server->session_key.response = NULL;
- server->session_key.len = 0;
- server->lstrp = jiffies;
/* mark submitted MIDs for retry and issue callback */
INIT_LIST_HEAD(&retry_list);
@@ -557,7 +540,6 @@ cifs_reconnect(struct TCP_Server_Info *server)
list_move(&mid_entry->qhead, &retry_list);
}
spin_unlock(&GlobalMid_Lock);
- mutex_unlock(&server->srv_mutex);
cifs_dbg(FYI, "%s: issuing mid callbacks\n", __func__);
list_for_each_safe(tmp, tmp2, &retry_list) {
@@ -566,6 +548,25 @@ cifs_reconnect(struct TCP_Server_Info *server)
mid_entry->callback(mid_entry);
}
+ if (server->ssocket) {
+ cifs_dbg(FYI, "State: 0x%x Flags: 0x%lx\n",
+ server->ssocket->state, server->ssocket->flags);
+ kernel_sock_shutdown(server->ssocket, SHUT_WR);
+ cifs_dbg(FYI, "Post shutdown state: 0x%x Flags: 0x%lx\n",
+ server->ssocket->state, server->ssocket->flags);
+ sock_release(server->ssocket);
+ server->ssocket = NULL;
+ } else if (cifs_rdma_enabled(server))
+ smbd_destroy(server);
+ server->sequence_number = 0;
+ server->session_estab = false;
+ kfree(server->session_key.response);
+ server->session_key.response = NULL;
+ server->session_key.len = 0;
+ server->lstrp = jiffies;
+
+ mutex_unlock(&server->srv_mutex);
+
do {
try_to_freeze();
@@ -931,10 +932,8 @@ static void clean_demultiplex_info(struct TCP_Server_Info *server)
wake_up_all(&server->request_q);
/* give those requests time to exit */
msleep(125);
- if (cifs_rdma_enabled(server) && server->smbd_conn) {
- smbd_destroy(server->smbd_conn);
- server->smbd_conn = NULL;
- }
+ if (cifs_rdma_enabled(server))
+ smbd_destroy(server);
if (server->ssocket) {
sock_release(server->ssocket);
server->ssocket = NULL;
@@ -2904,8 +2903,7 @@ cifs_find_smb_ses(struct TCP_Server_Info *server, struct smb_vol *vol)
return NULL;
}
-static void
-cifs_put_smb_ses(struct cifs_ses *ses)
+void cifs_put_smb_ses(struct cifs_ses *ses)
{
unsigned int rc, xid;
struct TCP_Server_Info *server = ses->server;
@@ -3082,7 +3080,7 @@ cifs_set_cifscreds(struct smb_vol *vol __attribute__((unused)),
* already got a server reference (server refcount +1). See
* cifs_get_tcon() for refcount explanations.
*/
-static struct cifs_ses *
+struct cifs_ses *
cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb_vol *volume_info)
{
int rc = -ENOMEM;
@@ -4389,7 +4387,7 @@ static int mount_do_dfs_failover(const char *path,
}
#endif
-static int
+int
cifs_setup_volume_info(struct smb_vol *volume_info, char *mount_data,
const char *devname, bool is_smb3)
{
@@ -4543,7 +4541,7 @@ int cifs_mount(struct cifs_sb_info *cifs_sb, struct smb_vol *vol)
struct cifs_tcon *tcon = NULL;
struct TCP_Server_Info *server;
char *root_path = NULL, *full_path = NULL;
- char *old_mountdata;
+ char *old_mountdata, *origin_mountdata = NULL;
int count;
rc = mount_get_conns(vol, cifs_sb, &xid, &server, &ses, &tcon);
@@ -4602,6 +4600,14 @@ int cifs_mount(struct cifs_sb_info *cifs_sb, struct smb_vol *vol)
goto error;
}
+ /* Save DFS root volume information for DFS refresh worker */
+ origin_mountdata = kstrndup(cifs_sb->mountdata,
+ strlen(cifs_sb->mountdata), GFP_KERNEL);
+ if (!origin_mountdata) {
+ rc = -ENOMEM;
+ goto error;
+ }
+
if (cifs_sb->mountdata != old_mountdata) {
/* If we were redirected, reconnect to new target server */
mount_put_conns(cifs_sb, xid, server, ses, tcon);
@@ -4710,7 +4716,7 @@ int cifs_mount(struct cifs_sb_info *cifs_sb, struct smb_vol *vol)
}
spin_unlock(&cifs_tcp_ses_lock);
- rc = dfs_cache_add_vol(vol, cifs_sb->origin_fullpath);
+ rc = dfs_cache_add_vol(origin_mountdata, vol, cifs_sb->origin_fullpath);
if (rc) {
kfree(cifs_sb->origin_fullpath);
goto error;
@@ -4728,6 +4734,7 @@ out:
error:
kfree(full_path);
kfree(root_path);
+ kfree(origin_mountdata);
mount_put_conns(cifs_sb, xid, server, ses, tcon);
return rc;
}
diff --git a/fs/cifs/dfs_cache.c b/fs/cifs/dfs_cache.c
index 09b7d0d4f6e4..85dc89d3a203 100644
--- a/fs/cifs/dfs_cache.c
+++ b/fs/cifs/dfs_cache.c
@@ -2,7 +2,7 @@
/*
* DFS referral cache routines
*
- * Copyright (c) 2018 Paulo Alcantara <palcantara@suse.de>
+ * Copyright (c) 2018-2019 Paulo Alcantara <palcantara@suse.de>
*/
#include <linux/rcupdate.h>
@@ -52,6 +52,7 @@ static struct kmem_cache *dfs_cache_slab __read_mostly;
struct dfs_cache_vol_info {
char *vi_fullpath;
struct smb_vol vi_vol;
+ char *vi_mntdata;
struct list_head vi_list;
};
@@ -529,6 +530,7 @@ static inline void free_vol(struct dfs_cache_vol_info *vi)
{
list_del(&vi->vi_list);
kfree(vi->vi_fullpath);
+ kfree(vi->vi_mntdata);
cifs_cleanup_volume_info_contents(&vi->vi_vol);
kfree(vi);
}
@@ -1139,17 +1141,18 @@ err_free_username:
* dfs_cache_add_vol - add a cifs volume during mount() that will be handled by
* DFS cache refresh worker.
*
+ * @mntdata: mount data.
* @vol: cifs volume.
* @fullpath: origin full path.
*
* Return zero if volume was set up correctly, otherwise non-zero.
*/
-int dfs_cache_add_vol(struct smb_vol *vol, const char *fullpath)
+int dfs_cache_add_vol(char *mntdata, struct smb_vol *vol, const char *fullpath)
{
int rc;
struct dfs_cache_vol_info *vi;
- if (!vol || !fullpath)
+ if (!vol || !fullpath || !mntdata)
return -EINVAL;
cifs_dbg(FYI, "%s: fullpath: %s\n", __func__, fullpath);
@@ -1168,6 +1171,8 @@ int dfs_cache_add_vol(struct smb_vol *vol, const char *fullpath)
if (rc)
goto err_free_fullpath;
+ vi->vi_mntdata = mntdata;
+
mutex_lock(&dfs_cache.dc_lock);
list_add_tail(&vi->vi_list, &dfs_cache.dc_vol_list);
mutex_unlock(&dfs_cache.dc_lock);
@@ -1275,8 +1280,102 @@ static void get_tcons(struct TCP_Server_Info *server, struct list_head *head)
spin_unlock(&cifs_tcp_ses_lock);
}
+static inline bool is_dfs_link(const char *path)
+{
+ char *s;
+
+ s = strchr(path + 1, '\\');
+ if (!s)
+ return false;
+ return !!strchr(s + 1, '\\');
+}
+
+static inline char *get_dfs_root(const char *path)
+{
+ char *s, *npath;
+
+ s = strchr(path + 1, '\\');
+ if (!s)
+ return ERR_PTR(-EINVAL);
+
+ s = strchr(s + 1, '\\');
+ if (!s)
+ return ERR_PTR(-EINVAL);
+
+ npath = kstrndup(path, s - path, GFP_KERNEL);
+ if (!npath)
+ return ERR_PTR(-ENOMEM);
+
+ return npath;
+}
+
+/* Find root SMB session out of a DFS link path */
+static struct cifs_ses *find_root_ses(struct dfs_cache_vol_info *vi,
+ struct cifs_tcon *tcon, const char *path)
+{
+ char *rpath;
+ 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;
+
+ rpath = get_dfs_root(path);
+ if (IS_ERR(rpath))
+ return ERR_CAST(rpath);
+
+ memset(&vol, 0, sizeof(vol));
+
+ rc = dfs_cache_noreq_find(rpath, &ref, NULL);
+ if (rc) {
+ ses = ERR_PTR(rc);
+ goto out;
+ }
+
+ mdata = cifs_compose_mount_options(vi->vi_mntdata, rpath, &ref,
+ &devname);
+ free_dfs_info_param(&ref);
+
+ if (IS_ERR(mdata)) {
+ ses = ERR_CAST(mdata);
+ mdata = NULL;
+ goto out;
+ }
+
+ rc = cifs_setup_volume_info(&vol, mdata, devname, is_smb3);
+ kfree(devname);
+
+ if (rc) {
+ ses = ERR_PTR(rc);
+ goto out;
+ }
+
+ server = cifs_find_tcp_session(&vol);
+ if (IS_ERR_OR_NULL(server)) {
+ ses = ERR_PTR(-EHOSTDOWN);
+ goto out;
+ }
+ if (server->tcpStatus != CifsGood) {
+ cifs_put_tcp_session(server, 0);
+ ses = ERR_PTR(-EHOSTDOWN);
+ goto out;
+ }
+
+ ses = cifs_get_smb_ses(server, &vol);
+
+out:
+ cifs_cleanup_volume_info_contents(&vol);
+ kfree(mdata);
+ kfree(rpath);
+
+ return ses;
+}
+
/* Refresh DFS cache entry from a given tcon */
-static void do_refresh_tcon(struct dfs_cache *dc, struct cifs_tcon *tcon)
+static void do_refresh_tcon(struct dfs_cache *dc, struct dfs_cache_vol_info *vi,
+ struct cifs_tcon *tcon)
{
int rc = 0;
unsigned int xid;
@@ -1285,6 +1384,7 @@ static void do_refresh_tcon(struct dfs_cache *dc, struct cifs_tcon *tcon)
struct dfs_cache_entry *ce;
struct dfs_info3_param *refs = NULL;
int numrefs = 0;
+ struct cifs_ses *root_ses = NULL, *ses;
xid = get_xid();
@@ -1306,13 +1406,24 @@ static void do_refresh_tcon(struct dfs_cache *dc, struct cifs_tcon *tcon)
if (!cache_entry_expired(ce))
goto out;
- if (unlikely(!tcon->ses->server->ops->get_dfs_refer)) {
+ /* If it's a DFS Link, then use root SMB session for refreshing it */
+ if (is_dfs_link(npath)) {
+ ses = root_ses = find_root_ses(vi, tcon, npath);
+ if (IS_ERR(ses)) {
+ rc = PTR_ERR(ses);
+ root_ses = NULL;
+ goto out;
+ }
+ } else {
+ ses = tcon->ses;
+ }
+
+ if (unlikely(!ses->server->ops->get_dfs_refer)) {
rc = -EOPNOTSUPP;
} else {
- rc = tcon->ses->server->ops->get_dfs_refer(xid, tcon->ses, path,
- &refs, &numrefs,
- dc->dc_nlsc,
- tcon->remap);
+ rc = ses->server->ops->get_dfs_refer(xid, ses, path, &refs,
+ &numrefs, dc->dc_nlsc,
+ tcon->remap);
if (!rc) {
mutex_lock(&dfs_cache_list_lock);
ce = __update_cache_entry(npath, refs, numrefs);
@@ -1323,9 +1434,11 @@ static void do_refresh_tcon(struct dfs_cache *dc, struct cifs_tcon *tcon)
rc = PTR_ERR(ce);
}
}
- if (rc)
- cifs_dbg(FYI, "%s: failed to update expired entry\n", __func__);
+
out:
+ if (root_ses)
+ cifs_put_smb_ses(root_ses);
+
free_xid(xid);
free_normalized_path(path, npath);
}
@@ -1333,9 +1446,6 @@ out:
/*
* Worker that will refresh DFS cache based on lowest TTL value from a DFS
* referral.
- *
- * FIXME: ensure that all requests are sent to DFS root for refreshing the
- * cache.
*/
static void refresh_cache_worker(struct work_struct *work)
{
@@ -1356,7 +1466,7 @@ static void refresh_cache_worker(struct work_struct *work)
goto next;
get_tcons(server, &list);
list_for_each_entry_safe(tcon, ntcon, &list, ulist) {
- do_refresh_tcon(dc, tcon);
+ do_refresh_tcon(dc, vi, tcon);
list_del_init(&tcon->ulist);
cifs_put_tcon(tcon);
}
diff --git a/fs/cifs/dfs_cache.h b/fs/cifs/dfs_cache.h
index 22f366514f3a..76c732943f5f 100644
--- a/fs/cifs/dfs_cache.h
+++ b/fs/cifs/dfs_cache.h
@@ -2,7 +2,7 @@
/*
* DFS referral cache routines
*
- * Copyright (c) 2018 Paulo Alcantara <palcantara@suse.de>
+ * Copyright (c) 2018-2019 Paulo Alcantara <palcantara@suse.de>
*/
#ifndef _CIFS_DFS_CACHE_H
@@ -43,7 +43,8 @@ dfs_cache_noreq_update_tgthint(const char *path,
extern int dfs_cache_get_tgt_referral(const char *path,
const struct dfs_cache_tgt_iterator *it,
struct dfs_info3_param *ref);
-extern int dfs_cache_add_vol(struct smb_vol *vol, const char *fullpath);
+extern int dfs_cache_add_vol(char *mntdata, struct smb_vol *vol,
+ const char *fullpath);
extern int dfs_cache_update_vol(const char *fullpath,
struct TCP_Server_Info *server);
extern void dfs_cache_del_vol(const char *fullpath);
diff --git a/fs/cifs/file.c b/fs/cifs/file.c
index 7037a137fa53..ce9a5be11df5 100644
--- a/fs/cifs/file.c
+++ b/fs/cifs/file.c
@@ -2443,7 +2443,6 @@ int cifs_strict_fsync(struct file *file, loff_t start, loff_t end,
rc = file_write_and_wait_range(file, start, end);
if (rc)
return rc;
- inode_lock(inode);
xid = get_xid();
@@ -2468,7 +2467,6 @@ int cifs_strict_fsync(struct file *file, loff_t start, loff_t end,
}
free_xid(xid);
- inode_unlock(inode);
return rc;
}
@@ -2480,12 +2478,10 @@ int cifs_fsync(struct file *file, loff_t start, loff_t end, int datasync)
struct TCP_Server_Info *server;
struct cifsFileInfo *smbfile = file->private_data;
struct cifs_sb_info *cifs_sb = CIFS_FILE_SB(file);
- struct inode *inode = file->f_mapping->host;
rc = file_write_and_wait_range(file, start, end);
if (rc)
return rc;
- inode_lock(inode);
xid = get_xid();
@@ -2502,7 +2498,6 @@ int cifs_fsync(struct file *file, loff_t start, loff_t end, int datasync)
}
free_xid(xid);
- inode_unlock(inode);
return rc;
}
diff --git a/fs/cifs/inode.c b/fs/cifs/inode.c
index 538fd7d807e4..d7cc62252634 100644
--- a/fs/cifs/inode.c
+++ b/fs/cifs/inode.c
@@ -2116,6 +2116,43 @@ int cifs_getattr(const struct path *path, struct kstat *stat,
return rc;
}
+int cifs_fiemap(struct inode *inode, struct fiemap_extent_info *fei, u64 start,
+ u64 len)
+{
+ struct cifsInodeInfo *cifs_i = CIFS_I(inode);
+ struct cifs_sb_info *cifs_sb = CIFS_SB(cifs_i->vfs_inode.i_sb);
+ struct cifs_tcon *tcon = cifs_sb_master_tcon(cifs_sb);
+ struct TCP_Server_Info *server = tcon->ses->server;
+ struct cifsFileInfo *cfile;
+ int rc;
+
+ /*
+ * We need to be sure that all dirty pages are written as they
+ * might fill holes on the server.
+ */
+ if (!CIFS_CACHE_READ(CIFS_I(inode)) && inode->i_mapping &&
+ inode->i_mapping->nrpages != 0) {
+ rc = filemap_fdatawait(inode->i_mapping);
+ if (rc) {
+ mapping_set_error(inode->i_mapping, rc);
+ return rc;
+ }
+ }
+
+ cfile = find_readable_file(cifs_i, false);
+ if (cfile == NULL)
+ return -EINVAL;
+
+ if (server->ops->fiemap) {
+ rc = server->ops->fiemap(tcon, cfile, fei, start, len);
+ cifsFileInfo_put(cfile);
+ return rc;
+ }
+
+ cifsFileInfo_put(cfile);
+ return -ENOTSUPP;
+}
+
static int cifs_truncate_page(struct address_space *mapping, loff_t from)
{
pgoff_t index = from >> PAGE_SHIFT;
diff --git a/fs/cifs/link.c b/fs/cifs/link.c
index 62216dc8f9f5..b736acd3917b 100644
--- a/fs/cifs/link.c
+++ b/fs/cifs/link.c
@@ -648,9 +648,16 @@ cifs_get_link(struct dentry *direntry, struct inode *inode,
rc = query_mf_symlink(xid, tcon, cifs_sb, full_path,
&target_path);
- if (rc != 0 && server->ops->query_symlink)
- rc = server->ops->query_symlink(xid, tcon, full_path,
- &target_path, cifs_sb);
+ if (rc != 0 && server->ops->query_symlink) {
+ struct cifsInodeInfo *cifsi = CIFS_I(inode);
+ bool reparse_point = false;
+
+ if (cifsi->cifsAttrs & ATTR_REPARSE)
+ reparse_point = true;
+
+ rc = server->ops->query_symlink(xid, tcon, cifs_sb, full_path,
+ &target_path, reparse_point);
+ }
kfree(full_path);
free_xid(xid);
diff --git a/fs/cifs/smb1ops.c b/fs/cifs/smb1ops.c
index c711f1f39bf2..c4e75afa3258 100644
--- a/fs/cifs/smb1ops.c
+++ b/fs/cifs/smb1ops.c
@@ -950,8 +950,8 @@ cifs_unix_dfs_readlink(const unsigned int xid, struct cifs_tcon *tcon,
static int
cifs_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
- const char *full_path, char **tar