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Diffstat (limited to 'fs/cifs/smb2ops.c')
-rw-r--r--fs/cifs/smb2ops.c773
1 files changed, 554 insertions, 219 deletions
diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
index 64a5864127be..e47190cae163 100644
--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -10,7 +10,9 @@
#include <linux/falloc.h>
#include <linux/scatterlist.h>
#include <linux/uuid.h>
+#include <linux/sort.h>
#include <crypto/aead.h>
+#include "cifsfs.h"
#include "cifsglob.h"
#include "smb2pdu.h"
#include "smb2proto.h"
@@ -109,10 +111,10 @@ smb2_add_credits(struct TCP_Server_Info *server,
/* change_conf hasn't been executed */
break;
case 0:
- cifs_dbg(VFS, "Possible client or server bug - zero credits\n");
+ cifs_server_dbg(VFS, "Possible client or server bug - zero credits\n");
break;
case 1:
- cifs_dbg(VFS, "disabling echoes and oplocks\n");
+ cifs_server_dbg(VFS, "disabling echoes and oplocks\n");
break;
case 2:
cifs_dbg(FYI, "disabling oplocks\n");
@@ -151,13 +153,7 @@ 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
@@ -203,6 +199,8 @@ smb2_wait_mtu_credits(struct TCP_Server_Info *server, unsigned int size,
credits->instance = server->reconnect_instance;
server->credits -= credits->value;
server->in_flight++;
+ if (server->in_flight > server->max_in_flight)
+ server->max_in_flight = server->in_flight;
break;
}
}
@@ -230,7 +228,7 @@ smb2_adjust_credits(struct TCP_Server_Info *server,
if (server->reconnect_instance != credits->instance) {
spin_unlock(&server->req_lock);
- cifs_dbg(VFS, "trying to return %d credits to old session\n",
+ cifs_server_dbg(VFS, "trying to return %d credits to old session\n",
credits->value - new_val);
return -EAGAIN;
}
@@ -270,7 +268,7 @@ smb2_find_mid(struct TCP_Server_Info *server, char *buf)
__u64 wire_mid = le64_to_cpu(shdr->MessageId);
if (shdr->ProtocolId == SMB2_TRANSFORM_PROTO_NUM) {
- cifs_dbg(VFS, "Encrypted frame parsing not supported yet\n");
+ cifs_server_dbg(VFS, "Encrypted frame parsing not supported yet\n");
return NULL;
}
@@ -294,10 +292,10 @@ smb2_dump_detail(void *buf, struct TCP_Server_Info *server)
#ifdef CONFIG_CIFS_DEBUG2
struct smb2_sync_hdr *shdr = (struct smb2_sync_hdr *)buf;
- cifs_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Mid: %llu Pid: %d\n",
+ cifs_server_dbg(VFS, "Cmd: %d Err: 0x%x Flags: 0x%x Mid: %llu Pid: %d\n",
shdr->Command, shdr->Status, shdr->Flags, shdr->MessageId,
shdr->ProcessId);
- cifs_dbg(VFS, "smb buf %p len %u\n", buf,
+ cifs_server_dbg(VFS, "smb buf %p len %u\n", buf,
server->ops->calc_smb_size(buf, server));
#endif
}
@@ -313,7 +311,7 @@ smb2_negotiate(const unsigned int xid, struct cifs_ses *ses)
{
int rc;
- ses->server->CurrentMid = 0;
+ cifs_ses_server(ses)->CurrentMid = 0;
rc = SMB2_negotiate(xid, ses);
/* BB we probably don't need to retry with modern servers */
if (rc == -EAGAIN)
@@ -556,6 +554,13 @@ out:
return rc;
}
+static int compare_iface(const void *ia, const void *ib)
+{
+ const struct cifs_server_iface *a = (struct cifs_server_iface *)ia;
+ const struct cifs_server_iface *b = (struct cifs_server_iface *)ib;
+
+ return a->speed == b->speed ? 0 : (a->speed > b->speed ? -1 : 1);
+}
static int
SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon)
@@ -576,7 +581,7 @@ SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon)
"server does not support query network interfaces\n");
goto out;
} else if (rc != 0) {
- cifs_dbg(VFS, "error %d on ioctl to get interface list\n", rc);
+ cifs_tcon_dbg(VFS, "error %d on ioctl to get interface list\n", rc);
goto out;
}
@@ -585,6 +590,9 @@ SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon)
if (rc)
goto out;
+ /* sort interfaces from fastest to slowest */
+ sort(iface_list, iface_count, sizeof(*iface_list), compare_iface, NULL);
+
spin_lock(&ses->iface_lock);
kfree(ses->iface_list);
ses->iface_list = iface_list;
@@ -609,6 +617,7 @@ smb2_close_cached_fid(struct kref *ref)
cfid->fid->volatile_fid);
cfid->is_valid = false;
cfid->file_all_info_is_valid = false;
+ cfid->has_lease = false;
}
}
@@ -619,19 +628,35 @@ void close_shroot(struct cached_fid *cfid)
mutex_unlock(&cfid->fid_mutex);
}
+void close_shroot_lease_locked(struct cached_fid *cfid)
+{
+ if (cfid->has_lease) {
+ cfid->has_lease = false;
+ kref_put(&cfid->refcount, smb2_close_cached_fid);
+ }
+}
+
+void close_shroot_lease(struct cached_fid *cfid)
+{
+ mutex_lock(&cfid->fid_mutex);
+ close_shroot_lease_locked(cfid);
+ mutex_unlock(&cfid->fid_mutex);
+}
+
void
smb2_cached_lease_break(struct work_struct *work)
{
struct cached_fid *cfid = container_of(work,
struct cached_fid, lease_break);
- close_shroot(cfid);
+ close_shroot_lease(cfid);
}
/*
* Open the directory at the root of a share
*/
-int open_shroot(unsigned int xid, struct cifs_tcon *tcon, struct cifs_fid *pfid)
+int open_shroot(unsigned int xid, struct cifs_tcon *tcon,
+ struct cifs_sb_info *cifs_sb, struct cifs_fid *pfid)
{
struct cifs_ses *ses = tcon->ses;
struct TCP_Server_Info *server = ses->server;
@@ -656,6 +681,15 @@ int open_shroot(unsigned int xid, struct cifs_tcon *tcon, struct cifs_fid *pfid)
return 0;
}
+ /*
+ * We do not hold the lock for the open because in case
+ * SMB2_open needs to reconnect, it will end up calling
+ * cifs_mark_open_files_invalid() which takes the lock again
+ * thus causing a deadlock
+ */
+
+ mutex_unlock(&tcon->crfid.fid_mutex);
+
if (smb3_encryption_required(tcon))
flags |= CIFS_TRANSFORM_REQ;
@@ -669,7 +703,7 @@ int open_shroot(unsigned int xid, struct cifs_tcon *tcon, struct cifs_fid *pfid)
rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
oparms.tcon = tcon;
- oparms.create_options = 0;
+ oparms.create_options = cifs_create_options(cifs_sb, 0);
oparms.desired_access = FILE_READ_ATTRIBUTES;
oparms.disposition = FILE_OPEN;
oparms.fid = pfid;
@@ -677,7 +711,7 @@ int open_shroot(unsigned int xid, struct cifs_tcon *tcon, struct cifs_fid *pfid)
rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, &utf16_path);
if (rc)
- goto oshr_exit;
+ goto oshr_free;
smb2_set_next_command(tcon, &rqst[0]);
memset(&qi_iov, 0, sizeof(qi_iov));
@@ -690,18 +724,10 @@ int open_shroot(unsigned int xid, struct cifs_tcon *tcon, struct cifs_fid *pfid)
sizeof(struct smb2_file_all_info) +
PATH_MAX * 2, 0, NULL);
if (rc)
- goto oshr_exit;
+ goto oshr_free;
smb2_set_related(&rqst[1]);
- /*
- * We do not hold the lock for the open because in case
- * SMB2_open needs to reconnect, it will end up calling
- * cifs_mark_open_files_invalid() which takes the lock again
- * thus causing a deadlock
- */
-
- mutex_unlock(&tcon->crfid.fid_mutex);
rc = compound_send_recv(xid, ses, flags, 2, rqst,
resp_buftype, rsp_iov);
mutex_lock(&tcon->crfid.fid_mutex);
@@ -739,8 +765,16 @@ int open_shroot(unsigned int xid, struct cifs_tcon *tcon, struct cifs_fid *pfid)
/* Cached root is still invalid, continue normaly */
- if (rc)
+ if (rc) {
+ if (rc == -EREMCHG) {
+ tcon->need_reconnect = true;
+ printk_once(KERN_WARNING "server share %s deleted\n",
+ tcon->treeName);
+ }
goto oshr_exit;
+ }
+
+ atomic_inc(&tcon->num_remote_opens);
o_rsp = (struct smb2_create_rsp *)rsp_iov[0].iov_base;
oparms.fid->persistent_fid = o_rsp->PersistentFileId;
@@ -757,6 +791,7 @@ int open_shroot(unsigned int xid, struct cifs_tcon *tcon, struct cifs_fid *pfid)
/* BB TBD check to see if oplock level check can be removed below */
if (o_rsp->OplockLevel == SMB2_OPLOCK_LEVEL_LEASE) {
kref_get(&tcon->crfid.refcount);
+ tcon->crfid.has_lease = true;
smb2_parse_contexts(server, o_rsp,
&oparms.fid->epoch,
oparms.fid->lease_key, &oplock, NULL);
@@ -771,7 +806,7 @@ int open_shroot(unsigned int xid, struct cifs_tcon *tcon, struct cifs_fid *pfid)
sizeof(struct smb2_file_all_info),
&rsp_iov[1], sizeof(struct smb2_file_all_info),
(char *)&tcon->crfid.file_all_info))
- tcon->crfid.file_all_info_is_valid = 1;
+ tcon->crfid.file_all_info_is_valid = true;
oshr_exit:
mutex_unlock(&tcon->crfid.fid_mutex);
@@ -784,7 +819,8 @@ oshr_free:
}
static void
-smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
+smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon,
+ struct cifs_sb_info *cifs_sb)
{
int rc;
__le16 srch_path = 0; /* Null - open root of share */
@@ -796,7 +832,7 @@ smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
oparms.tcon = tcon;
oparms.desired_access = FILE_READ_ATTRIBUTES;
oparms.disposition = FILE_OPEN;
- oparms.create_options = 0;
+ oparms.create_options = cifs_create_options(cifs_sb, 0);
oparms.fid = &fid;
oparms.reconnect = false;
@@ -804,7 +840,7 @@ smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
rc = SMB2_open(xid, &oparms, &srch_path, &oplock, NULL, NULL,
NULL);
else
- rc = open_shroot(xid, tcon, &fid);
+ rc = open_shroot(xid, tcon, cifs_sb, &fid);
if (rc)
return;
@@ -826,7 +862,8 @@ smb3_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
}
static void
-smb2_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
+smb2_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon,
+ struct cifs_sb_info *cifs_sb)
{
int rc;
__le16 srch_path = 0; /* Null - open root of share */
@@ -837,7 +874,7 @@ smb2_qfs_tcon(const unsigned int xid, struct cifs_tcon *tcon)
oparms.tcon = tcon;
oparms.desired_access = FILE_READ_ATTRIBUTES;
oparms.disposition = FILE_OPEN;
- oparms.create_options = 0;
+ oparms.create_options = cifs_create_options(cifs_sb, 0);
oparms.fid = &fid;
oparms.reconnect = false;
@@ -872,10 +909,7 @@ smb2_is_path_accessible(const unsigned int xid, struct cifs_tcon *tcon,
oparms.tcon = tcon;
oparms.desired_access = FILE_READ_ATTRIBUTES;
oparms.disposition = FILE_OPEN;
- if (backup_cred(cifs_sb))
- oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
- else
- oparms.create_options = 0;
+ oparms.create_options = cifs_create_options(cifs_sb, 0);
oparms.fid = &fid;
oparms.reconnect = false;
@@ -1082,7 +1116,8 @@ 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;
@@ -1105,6 +1140,38 @@ 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;
+ }
}
}
@@ -1117,10 +1184,7 @@ smb2_set_ea(const unsigned int xid, struct cifs_tcon *tcon,
oparms.tcon = tcon;
oparms.desired_access = FILE_WRITE_EA;
oparms.disposition = FILE_OPEN;
- if (backup_cred(cifs_sb))
- oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
- else
- oparms.create_options = 0;
+ oparms.create_options = cifs_create_options(cifs_sb, 0);
oparms.fid = &fid;
oparms.reconnect = false;
@@ -1162,11 +1226,12 @@ smb2_set_ea(const unsigned int xid, struct cifs_tcon *tcon,
memset(&close_iov, 0, sizeof(close_iov));
rqst[2].rq_iov = close_iov;
rqst[2].rq_nvec = 1;
- rc = SMB2_close_init(tcon, &rqst[2], COMPOUND_FID, COMPOUND_FID);
+ rc = SMB2_close_init(tcon, &rqst[2], COMPOUND_FID, COMPOUND_FID, false);
smb2_set_related(&rqst[2]);
rc = compound_send_recv(xid, ses, flags, 3, rqst,
resp_buftype, rsp_iov);
+ /* no need to bump num_remote_opens because handle immediately closed */
sea_exit:
kfree(ea);
@@ -1315,6 +1380,45 @@ smb2_close_file(const unsigned int xid, struct cifs_tcon *tcon,
SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
}
+static void
+smb2_close_getattr(const unsigned int xid, struct cifs_tcon *tcon,
+ struct cifsFileInfo *cfile)
+{
+ struct smb2_file_network_open_info file_inf;
+ struct inode *inode;
+ int rc;
+
+ rc = __SMB2_close(xid, tcon, cfile->fid.persistent_fid,
+ cfile->fid.volatile_fid, &file_inf);
+ if (rc)
+ return;
+
+ inode = d_inode(cfile->dentry);
+
+ spin_lock(&inode->i_lock);
+ CIFS_I(inode)->time = jiffies;
+
+ /* Creation time should not need to be updated on close */
+ if (file_inf.LastWriteTime)
+ inode->i_mtime = cifs_NTtimeToUnix(file_inf.LastWriteTime);
+ if (file_inf.ChangeTime)
+ inode->i_ctime = cifs_NTtimeToUnix(file_inf.ChangeTime);
+ if (file_inf.LastAccessTime)
+ inode->i_atime = cifs_NTtimeToUnix(file_inf.LastAccessTime);
+
+ /*
+ * i_blocks is not related to (i_size / i_blksize),
+ * but instead 512 byte (2**9) size is required for
+ * calculating num blocks.
+ */
+ if (le64_to_cpu(file_inf.AllocationSize) > 4096)
+ inode->i_blocks =
+ (512 - 1 + le64_to_cpu(file_inf.AllocationSize)) >> 9;
+
+ /* End of file and Attributes should not have to be updated on close */
+ spin_unlock(&inode->i_lock);
+}
+
static int
SMB2_request_res_key(const unsigned int xid, struct cifs_tcon *tcon,
u64 persistent_fid, u64 volatile_fid,
@@ -1330,11 +1434,11 @@ SMB2_request_res_key(const unsigned int xid, struct cifs_tcon *tcon,
(char **)&res_key, &ret_data_len);
if (rc) {
- cifs_dbg(VFS, "refcpy ioctl error %d getting resume key\n", rc);
+ cifs_tcon_dbg(VFS, "refcpy ioctl error %d getting resume key\n", rc);
goto req_res_key_exit;
}
if (ret_data_len < sizeof(struct resume_key_req)) {
- cifs_dbg(VFS, "Invalid refcopy resume key length\n");
+ cifs_tcon_dbg(VFS, "Invalid refcopy resume key length\n");
rc = -EINVAL;
goto req_res_key_exit;
}
@@ -1348,6 +1452,7 @@ req_res_key_exit:
static int
smb2_ioctl_query_info(const unsigned int xid,
struct cifs_tcon *tcon,
+ struct cifs_sb_info *cifs_sb,
__le16 *path, int is_dir,
unsigned long p)
{
@@ -1369,7 +1474,11 @@ smb2_ioctl_query_info(const unsigned int xid,
struct cifs_fid fid;
struct kvec qi_iov[1];
struct kvec io_iov[SMB2_IOCTL_IOV_SIZE];
+ struct kvec si_iov[SMB2_SET_INFO_IOV_SIZE];
struct kvec close_iov[1];
+ unsigned int size[2];
+ void *data[2];
+ int create_options = is_dir ? CREATE_NOT_FILE : CREATE_NOT_DIR;
memset(rqst, 0, sizeof(rqst));
resp_buftype[0] = resp_buftype[1] = resp_buftype[2] = CIFS_NO_BUFFER;
@@ -1387,15 +1496,10 @@ smb2_ioctl_query_info(const unsigned int xid,
if (smb3_encryption_required(tcon))
flags |= CIFS_TRANSFORM_REQ;
- buffer = kmalloc(qi.output_buffer_length, GFP_KERNEL);
- if (buffer == NULL)
- return -ENOMEM;
-
- if (copy_from_user(buffer, arg + sizeof(struct smb_query_info),
- qi.output_buffer_length)) {
- rc = -EFAULT;
- goto iqinf_exit;
- }
+ buffer = memdup_user(arg + sizeof(struct smb_query_info),
+ qi.output_buffer_length);
+ if (IS_ERR(buffer))
+ return PTR_ERR(buffer);
/* Open */
memset(&open_iov, 0, sizeof(open_iov));
@@ -1404,18 +1508,11 @@ smb2_ioctl_query_info(const unsigned int xid,
memset(&oparms, 0, sizeof(oparms));
oparms.tcon = tcon;
- oparms.desired_access = FILE_READ_ATTRIBUTES | READ_CONTROL;
oparms.disposition = FILE_OPEN;
- if (is_dir)
- oparms.create_options = CREATE_NOT_FILE;
- else
- oparms.create_options = CREATE_NOT_DIR;
+ oparms.create_options = cifs_create_options(cifs_sb, create_options);
oparms.fid = &fid;
oparms.reconnect = false;
- /*
- * FSCTL codes encode the special access they need in the fsctl code.
- */
if (qi.flags & PASSTHRU_FSCTL) {
switch (qi.info_type & FSCTL_DEVICE_ACCESS_MASK) {
case FSCTL_DEVICE_ACCESS_FILE_READ_WRITE_ACCESS:
@@ -1431,6 +1528,10 @@ smb2_ioctl_query_info(const unsigned int xid,
oparms.desired_access = GENERIC_WRITE;
break;
}
+ } else if (qi.flags & PASSTHRU_SET_INFO) {
+ oparms.desired_access = GENERIC_WRITE;
+ } else {
+ oparms.desired_access = FILE_READ_ATTRIBUTES | READ_CONTROL;
}
rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, path);
@@ -1452,7 +1553,27 @@ 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_SET_INFO) {
+ /* Can eventually relax perm check since server enforces too */
+ if (!capable(CAP_SYS_ADMIN))
+ rc = -EPERM;
+ else {
+ memset(&si_iov, 0, sizeof(si_iov));
+ rqst[1].rq_iov = si_iov;
+ rqst[1].rq_nvec = 1;
+
+ size[0] = 8;
+ data[0] = buffer;
+
+ rc = SMB2_set_info_init(tcon, &rqst[1],
+ COMPOUND_FID, COMPOUND_FID,
+ current->tgid,
+ FILE_END_OF_FILE_INFORMATION,
+ SMB2_O_INFO_FILE, 0, data, size);
}
} else if (qi.flags == PASSTHRU_QUERY_INFO) {
memset(&qi_iov, 0, sizeof(qi_iov));
@@ -1465,7 +1586,7 @@ smb2_ioctl_query_info(const unsigned int xid,
qi.input_buffer_length,
qi.output_buffer_length, buffer);
} else { /* unknown flags */
- cifs_dbg(VFS, "invalid passthru query flags: 0x%x\n", qi.flags);
+ cifs_tcon_dbg(VFS, "invalid passthru query flags: 0x%x\n", qi.flags);
rc = -EINVAL;
}
@@ -1479,7 +1600,7 @@ smb2_ioctl_query_info(const unsigned int xid,
rqst[2].rq_iov = close_iov;
rqst[2].rq_nvec = 1;
- rc = SMB2_close_init(tcon, &rqst[2], COMPOUND_FID, COMPOUND_FID);
+ rc = SMB2_close_init(tcon, &rqst[2], COMPOUND_FID, COMPOUND_FID, false);
if (rc)
goto iqinf_exit;
smb2_set_related(&rqst[2]);
@@ -1488,41 +1609,40 @@ smb2_ioctl_query_info(const unsigned int xid,
resp_buftype, rsp_iov);
if (rc)
goto iqinf_exit;
+
+ /* No need to bump num_remote_opens since handle immediately closed */
if (qi.flags & PASSTHRU_FSCTL) {
pqi = (struct smb_query_info __user *)arg;
io_rsp = (struct smb2_ioctl_rsp *)rsp_iov[1].iov_base;
if (le32_to_cpu(io_rsp->OutputCount) < qi.input_buffer_length)
qi.input_buffer_length = le32_to_cpu(io_rsp->OutputCount);
if (qi.input_buffer_length > 0 &&
- le32_to_cpu(io_rsp->OutputOffset) + qi.input_buffer_length > rsp_iov[1].iov_len) {
- rc = -EFAULT;
- goto iqinf_exit;
- }
- if (copy_to_user(&pqi->input_buffer_length, &qi.input_buffer_length,
- sizeof(qi.input_buffer_length))) {
- rc = -EFAULT;
- goto iqinf_exit;
- }
+ le32_to_cpu(io_rsp->OutputOffset) + qi.input_buffer_length
+ > rsp_iov[1].iov_len)
+ goto e_fault;
+
+ if (copy_to_user(&pqi->input_buffer_length,
+ &qi.input_buffer_length,
+ sizeof(qi.input_buffer_length)))
+ goto e_fault;
+
if (copy_to_user((void __user *)pqi + sizeof(struct smb_query_info),
(const void *)io_rsp + le32_to_cpu(io_rsp->OutputOffset),
- qi.input_buffer_length)) {
- rc = -EFAULT;
- goto iqinf_exit;
- }
+ qi.input_buffer_length))
+ goto e_fault;
} else {
pqi = (struct smb_query_info __user *)arg;
qi_rsp = (struct smb2_query_info_rsp *)rsp_iov[1].iov_base;
if (le32_to_cpu(qi_rsp->OutputBufferLength) < qi.input_buffer_length)
qi.input_buffer_length = le32_to_cpu(qi_rsp->OutputBufferLength);
- if (copy_to_user(&pqi->input_buffer_length, &qi.input_buffer_length,
- sizeof(qi.input_buffer_length))) {
- rc = -EFAULT;
- goto iqinf_exit;
- }
- if (copy_to_user(pqi + 1, qi_rsp->Buffer, qi.input_buffer_length)) {
- rc = -EFAULT;
- goto iqinf_exit;
- }
+ if (copy_to_user(&pqi->input_buffer_length,
+ &qi.input_buffer_length,
+ sizeof(qi.input_buffer_length)))
+ goto e_fault;
+
+ if (copy_to_user(pqi + 1, qi_rsp->Buffer,
+ qi.input_buffer_length))
+ goto e_fault;
}
iqinf_exit:
@@ -1538,6 +1658,10 @@ smb2_ioctl_query_info(const unsigned int xid,
free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
free_rsp_buf(resp_buftype[2], rsp_iov[2].iov_base);
return rc;
+
+e_fault:
+ rc = -EFAULT;
+ goto iqinf_exit;
}
static ssize_t
@@ -1592,7 +1716,7 @@ smb2_copychunk_range(const unsigned int xid,
if (rc == 0) {
if (ret_data_len !=
sizeof(struct copychunk_ioctl_rsp)) {
- cifs_dbg(VFS, "invalid cchunk response size\n");
+ cifs_tcon_dbg(VFS, "invalid cchunk response size\n");
rc = -EIO;
goto cchunk_out;
}
@@ -1606,12 +1730,12 @@ smb2_copychunk_range(const unsigned int xid,
*/
if (le32_to_cpu(retbuf->TotalBytesWritten) >
le32_to_cpu(pcchunk->Length)) {
- cifs_dbg(VFS, "invalid copy chunk response\n");
+ cifs_tcon_dbg(VFS, "invalid copy chunk response\n");
rc = -EIO;
goto cchunk_out;
}
if (le32_to_cpu(retbuf->ChunksWritten) != 1) {
- cifs_dbg(VFS, "invalid num chunks written\n");
+ cifs_tcon_dbg(VFS, "invalid num chunks written\n");
rc = -EIO;
goto cchunk_out;
}
@@ -1954,6 +2078,66 @@ smb3_enum_snapshots(const unsigned int xid, struct cifs_tcon *tcon,
return rc;
}
+
+
+static int
+smb3_notify(const unsigned int xid, struct file *pfile,
+ void __user *ioc_buf)
+{
+ struct smb3_notify notify;
+ struct dentry *dentry = pfile->f_path.dentry;
+ struct inode *inode = file_inode(pfile);
+ struct cifs_sb_info *cifs_sb;
+ struct cifs_open_parms oparms;
+ struct cifs_fid fid;
+ struct cifs_tcon *tcon;
+ unsigned char *path = NULL;
+ __le16 *utf16_path = NULL;
+ u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
+ int rc = 0;
+
+ path = build_path_from_dentry(dentry);
+ if (path == NULL)
+ return -ENOMEM;
+
+ cifs_sb = CIFS_SB(inode->i_sb);
+
+ utf16_path = cifs_convert_path_to_utf16(path + 1, cifs_sb);
+ if (utf16_path == NULL) {
+ rc = -ENOMEM;
+ goto notify_exit;
+ }
+
+ if (copy_from_user(&notify, ioc_buf, sizeof(struct smb3_notify))) {
+ rc = -EFAULT;
+ goto notify_exit;
+ }
+
+ tcon = cifs_sb_master_tcon(cifs_sb);
+ oparms.tcon = tcon;
+ oparms.desired_access = FILE_READ_ATTRIBUTES;
+ oparms.disposition = FILE_OPEN;
+ oparms.create_options = cifs_create_options(cifs_sb, 0);
+ oparms.fid = &fid;
+ oparms.reconnect = false;
+
+ rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
+ if (rc)
+ goto notify_exit;
+
+ rc = SMB2_change_notify(xid, tcon, fid.persistent_fid, fid.volatile_fid,
+ notify.watch_tree, notify.completion_filter);
+
+ SMB2_close(xid, tcon, fid.persistent_fid, fid.volatile_fid);
+
+ cifs_dbg(FYI, "change notify for path %s rc %d\n", path, rc);
+
+notify_exit:
+ kfree(path);
+ kfree(utf16_path);
+ return rc;
+}
+
static int
smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
const char *path, struct cifs_sb_info *cifs_sb,
@@ -1961,40 +2145,109 @@ smb2_query_dir_first(const unsigned int xid, struct cifs_tcon *tcon,
struct cifs_search_info *srch_inf)
{
__le16 *utf16_path;
- int rc;
- __u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
+ struct smb_rqst rqst[2];
+ struct kvec rsp_iov[2];
+ int resp_buftype[2];
+ struct kvec open_iov[SMB2_CREATE_IOV_SIZE];
+ struct kvec qd_iov[SMB2_QUERY_DIRECTORY_IOV_SIZE];
+ int rc, flags = 0;
+ u8 oplock = SMB2_OPLOCK_LEVEL_NONE;
struct cifs_open_parms oparms;
+ struct smb2_query_directory_rsp *qd_rsp = NULL;
+ struct smb2_create_rsp *op_rsp = NULL;
utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
if (!utf16_path)
return -ENOMEM;
+ if (smb3_encryption_required(tcon))
+ flags |= CIFS_TRANSFORM_REQ;
+
+ memset(rqst, 0, sizeof(rqst));
+ resp_buftype[0] = resp_buftype[1] = CIFS_NO_BUFFER;
+ memset(rsp_iov, 0, sizeof(rsp_iov));
+
+ /* Open */
+ memset(&open_iov, 0, sizeof(open_iov));
+ rqst[0].rq_iov = open_iov;
+ rqst[0].rq_nvec = SMB2_CREATE_IOV_SIZE;
+
oparms.tcon = tcon;
oparms.desired_access = FILE_READ_ATTRIBUTES | FILE_READ_DATA;
oparms.disposition = FILE_OPEN;
- if (backup_cred(cifs_sb))
- oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
- else
- oparms.create_options = 0;
+ oparms.create_options = cifs_create_options(cifs_sb, 0);
oparms.fid = fid;
oparms.reconnect = false;
- rc = SMB2_open(xid, &oparms, utf16_path, &oplock, NULL, NULL, NULL);
- kfree(utf16_path);
- if (rc) {
- cifs_dbg(FYI, "open dir failed rc=%d\n", rc);
- return rc;
- }
+ rc = SMB2_open_init(tcon, &rqst[0], &oplock, &oparms, utf16_path);
+ if (rc)
+ goto qdf_free;
+ smb2_set_next_command(tcon, &rqst[0]);
+ /* Query directory */
srch_inf->entries_in_buffer = 0;
srch_inf->index_of_last_entry = 2;
- rc = SMB2_query_directory(xid, tcon, fid->persistent_fid,
- fid->volatile_fid, 0, srch_inf);
- if (rc) {
- cifs_dbg(FYI, "query directory failed rc=%d\n", rc);
+ memset(&qd_iov, 0, sizeof(qd_iov));
+ rqst[1].rq_iov = qd_iov;
+ rqst[1].rq_nvec = SMB2_QUERY_DIRECTORY_IOV_SIZE;
+
+ rc = SMB2_query_directory_init(xid, tcon, &rqst[1],
+ COMPOUND_FID, COMPOUND_FID,
+ 0, srch_inf->info_level);
+ if (rc)
+ goto qdf_free;
+
+ smb2_set_related(&rqst[1]);
+
+ rc = compound_send_recv(xid, tcon->ses, flags, 2, rqst,
+ resp_buftype, rsp_iov);
+
+ /* If the open failed there is nothing to do */
+ op_rsp = (struct smb2_create_rsp *)rsp_iov[0].iov_base;
+ if (op_rsp == NULL || op_rsp->sync_hdr.Status != STATUS_SUCCESS) {
+ cifs_dbg(FYI, "query_dir_first: open failed rc=%d\n", rc);
+ goto qdf_free;
+ }
+ fid->persistent_fid = op_rsp->PersistentFileId;
+ fid->volatile_fid = op_rsp->VolatileFileId;
+
+ /* Anything else than ENODATA means a genuine error */
+ if (rc && rc != -ENODATA) {
SMB2_close(xid, tcon, fid->persistent_fid, fid->volatile_fid);
+ cifs_dbg(FYI, "query_dir_first: query directory failed rc=%d\n", rc);
+ trace_smb3_query_dir_err(xid, fid->persistent_fid,
+ tcon->tid, tcon->ses->Suid, 0, 0, rc);
+ goto qdf_free;
+ }
+
+ qd_rsp = (struct smb2_query_directory_rsp *)rsp_iov[1].iov_base;
+ if (qd_rsp->sync_hdr.Status == STATUS_NO_MORE_FILES) {
+ trace_smb3_query_dir_done(xid, fid->persistent_fid,
+ tcon->tid, tcon->ses->Suid, 0, 0);
+ srch_inf->endOfSearch = true;
+ rc = 0;
+ goto qdf_free;
}
+
+ rc = smb2_parse_query_directory(tcon, &rsp_iov[1], resp_buftype[1],
+ srch_inf);
+ if (rc) {
+ trace_smb3_query_dir_err(xid, fid->persistent_fid, tcon->tid,
+ tcon->ses->Suid, 0, 0, rc);
+ goto qdf_free;
+ }
+ resp_buftype[1] = CIFS_NO_BUFFER;
+
+ trace_smb3_query_dir_done(xid, fid->persistent_fid, tcon->tid,
+ tcon->ses->Suid, 0, srch_inf->entries_in_buffer);
+
+ qdf_free:
+ kfree(utf16_path);
+ SMB2_open_free(&rqst[0]);
+ SMB2_query_directory_free(&rqst[1]);
+ free_rsp_buf(resp_buftype[0], rsp_iov[0].iov_base);
+ free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
return rc;
}
@@ -2176,10 +2429,7 @@ smb2_query_info_compound(const unsigned int xid, struct cifs_tcon *tcon,
oparms.tcon = tcon;
oparms.desired_access = desired_access;
oparms.disposition = FILE_OPEN;
- if (cifs_sb && backup_cred(cifs_sb))
- oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
- else
- oparms.create_options = 0;
+ oparms.create_options = cifs_create_options(cifs_sb, 0);
oparms.fid = &fid;
oparms.reconnect = false;
@@ -2205,7 +2455,7 @@ smb2_query_info_compound(const unsigned int xid, struct cifs_tcon *tcon,
rqst[2].rq_iov = close_iov;
rqst[2].rq_nvec = 1;
- rc = SMB2_close_init(tcon, &rqst[2], COMPOUND_FID, COMPOUND_FID);
+ rc = SMB2_close_init(tcon, &rqst[2], COMPOUND_FID, COMPOUND_FID, false);
if (rc)
goto qic_exit;
smb2_set_related(&rqst[2]);
@@ -2214,6 +2464,11 @@ smb2_query_info_compound(const unsigned int xid, struct cifs_tcon *tcon,
resp_buftype, rsp_iov);
if (rc) {
free_rsp_buf(resp_buftype[1], rsp_iov[1].iov_base);
+ if (rc == -EREMCHG) {
+ tcon->need_reconnect = true;
+ printk_once(KERN_WARNING "server share %s deleted\n",
+ tcon->treeName);
+ }
goto qic_exit;
}
*rsp = rsp_iov[1];
@@ -2230,7 +2485,7 @@ smb2_query_info_compound(const unsigned int xid, struct cifs_tcon *tcon,
static int
smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
- struct kstatfs *buf)
+ struct cifs_sb_info *cifs_sb, struct kstatfs *buf)
{
struct smb2_query_info_rsp *rsp;
struct smb2_fs_full_size_info *info = NULL;
@@ -2245,7 +2500,7 @@ smb2_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
FS_FULL_SIZE_INFORMATION,
SMB2_O_INFO_FILESYSTEM,
sizeof(struct smb2_fs_full_size_info),
- &rsp_iov, &buftype, NULL);
+ &rsp_iov, &buftype, cifs_sb);
if (rc)
goto qfs_exit;
@@ -2267,7 +2522,7 @@ qfs_exit:
static int
smb311_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
- struct kstatfs *buf)
+ struct cifs_sb_info *cifs_sb, struct kstatfs *buf)
{
int rc;
__le16 srch_path = 0; /* Null - open root of share */
@@ -2276,12 +2531,12 @@ smb311_queryfs(const unsigned int xid, struct cifs_tcon *tcon,
struct cifs_fid fid;
if (!tcon->posix_extensions)
- return smb2_queryfs(xid, tcon, buf);
+ return smb2_queryfs(xid, tcon, cifs_sb, buf);
oparms.tcon = tcon;
oparms.desired_access = FILE_READ_ATTRIBUTES;
oparms.disposition = FILE_OPEN;
- oparms.create_options = 0;
+ oparms.create_options = cifs_create_options(cifs_sb, 0);
oparms.fid = &fid;
oparms.reconnect = false;
@@ -2401,7 +2656,7 @@ smb2_get_dfs_refer(const unsigned int xid, struct cifs_ses *ses,
if (rc) {
if ((rc != -ENOENT) && (rc != -EOPNOTSUPP))
- cifs_dbg(VFS, "ioctl error in %s rc=%d\n", __func__, rc);
+ cifs_tcon_dbg(VFS, "ioctl error in %s rc=%d\n", __func__, rc);
goto out;
}
@@ -2410,7 +2665,7 @@ smb2_get_dfs_refer(const unsigned int xid, struct cifs_ses *ses,
nls_codepage, remap, search_name,
true /* is_unicode */);
if (rc) {
- cifs_dbg(VFS, "parse error in %s rc=%d\n", __func__, rc);
+ cifs_tcon_dbg(VFS, "parse error in %s rc=%d\n", __func__, rc);
goto out;
}
@@ -2550,6 +2805,7 @@ smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
struct smb2_create_rsp *create_rsp;
struct smb2_ioctl_rsp *ioctl_rsp;
struct reparse_data_buffer *reparse_buf;
+ int create_options = is_reparse_point ? OPEN_REPARSE_POINT : 0;
u32 plen;
cifs_dbg(FYI, "%s: path: %s\n", __func__, full_path);
@@ -2576,14 +2832,7 @@ smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
oparms.tcon = tcon;
oparms.desired_access = FILE_READ_ATTRIBUTES;
oparms.disposition = FILE_OPEN;
-
- if (backup_cred(cifs_sb))
- oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
- else
- oparms.create_options = 0;
- if (is_reparse_point)
- oparms.create_options = OPEN_REPARSE_POINT;
-
+ oparms.create_options = cifs_create_options(cifs_sb, create_options);
oparms.fid = &fid;
oparms.reconnect = false;
@@ -2600,7 +2849,10 @@ 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;
@@ -2613,7 +2865,7 @@ smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
rqst[2].rq_iov = close_iov;
rqst[2].rq_nvec = 1;
- rc = SMB2_close_init(tcon, &rqst[2], COMPOUND_FID, COMPOUND_FID);
+ rc = SMB2_close_init(tcon, &rqst[2], COMPOUND_FID, COMPOUND_FID, false);
if (rc)
goto querty_exit;
@@ -2640,7 +2892,7 @@ smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,
if (plen + le32_to_cpu(ioctl_rsp->OutputOffset) >
rsp_iov[1].iov_len) {
- cifs_dbg(VFS, "srv returned invalid ioctl len: %d\n",
+ cifs_tcon_dbg(VFS, "srv returned invalid ioctl len: %d\n",
plen);
rc = -EIO;
goto querty_exit;
@@ -2759,11 +3011,6 @@ get_smb2_acl_by_path(struct cifs_sb_info *cifs_sb,
tcon = tlink_tcon(tlink);
xid = get_xid();
- if (backup_cred(cifs_sb))
- oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
- else
- oparms.create_options = 0;
-
utf16_path = cifs_convert_path_to_utf16(path, cifs_sb);
if (!utf16_path) {
rc = -ENOMEM;
@@ -2774,6 +3021,7 @@ get_smb2_acl_by_path(struct cifs_sb_info *cifs_sb,
oparms.tcon = tcon;
oparms.desired_access = READ_CONTROL;
oparms.disposition = FILE_OPEN;
+ oparms.create_options = cifs_create_options(cifs_sb, 0);
oparms.fid = &fid;
oparms.reconnect = false;
@@ -2815,11 +3063,6 @@ set_smb2_acl(struct cifs_ntsd *pnntsd, __u32 acllen,
tcon = tlink_tcon(tlink);
xid = get_xid();
- if (backup_cred(cifs_sb))
- oparms.create_options = CREATE_OPEN_BACKUP_INTENT;
- else
- oparms.create_options = 0;
-
if (aclflag == CIFS_ACL_OWNER || aclflag == CIFS_ACL_GROUP)
access_flags = WRITE_OWNER;
else
@@ -2834,6 +3077,7 @@ set_smb2_acl(struct cifs_ntsd *pnntsd, __u32 acllen,
oparms.tcon = tcon;
oparms.desired_access = access_flags;
+ oparms.create_options = cifs_create_options(cifs_sb, 0);
oparms.disposition = FILE_OPEN;
oparms.path = path;
oparms.fid = &fid;
@@ -2939,7 +3183,6 @@ static long smb3_punch_hole(struct file *file, struct cifs_tcon *tcon,
loff_t offset, loff_t len)
{
struct inode *inode;
- struct cifsInodeInfo *cifsi;
struct cifsFileInfo *cfile = file->private_data;
struct file_zero_data_information fsctl_buf;
long rc;
@@ -2949,7 +3192,6 @@ static long smb3_punch_hole(struct file *file, struct cifs_tcon *tcon,
xid = get_xid();
inode = d_inode(cfile->dentry);
- cifsi = CIFS_I(inode);
/* Need to make file sparse, if not already, before freeing range. */
/* Consider adding equivalent for compressed since it could also work */
@@ -3000,28 +3242,32 @@ static long smb3_simple_falloc(struct file *file, struct cifs_tcon *tcon,
}
/*
+ * Extending the file
+ */
+ if ((keep_size == false) && i_size_read(inode) < off + len) {
+ if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) == 0)
+ smb2_set_sparse(xid, tcon, cfile, inode, false);
+
+ eof = cpu_to_le64(off + len);
+ rc = SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
+ cfile->fid.volatile_fid, cfile->pid, &eof);
+ if (rc == 0) {
+ cifsi->server_eof = off + len;
+ cifs_setsize(inode, off + len);
+ cifs_truncate_page(inode->i_mapping, inode->i_size);
+ truncate_setsize(inode, off + len);
+ }
+ goto out;
+ }
+
+ /*
* Files are non-sparse by default so falloc may be a no-op
- * Must check if file sparse. If not sparse, and not extending
- * then no need to do anything since file already allocated
+ * Must check if file sparse. If not sparse, and since we are not
+ * extending then no need to do anything since file already allocated
*/
if ((cifsi->cifsAttrs & FILE_ATTRIBUTE_SPARSE_FILE) == 0) {
- if (keep_size == true)
- rc = 0;
- /* check if extending file */
- else if (i_size_read(inode) >= off + len)
- /* not extending file and already not sparse */
- rc = 0;
- /* BB: in future add else clause to extend file */
- else
- rc = -EOPNOTSUPP;
- if (rc)
- trace_smb3_falloc_err(xid, cfile->fid.persistent_fid,
- tcon->tid, tcon->ses->Suid, off, len, rc);
- else
- trace_smb3_falloc_done(xid, cfile->fid.persistent_fid,
- tcon->tid, tcon->ses->Suid, off, len);
- free_xid(xid);
- return rc;
+ rc = 0;
+ goto out;
}
if ((keep_size == true) || (i_size_read(inode) >= off + len)) {
@@ -3035,25 +3281,14 @@ static long smb3_simple_falloc(struct file *file, struct cifs_tcon *tcon,
*/
if ((off > 8192) || (off + len + 8192 < i_size_read(inode))) {
rc = -EOPNOTSUPP;
- trace_smb3_falloc_err(xid, cfile->fid.persistent_fid,
- tcon->tid, tcon->ses->Suid, off, len, rc);
- free_xid(xid);
- return rc;
- }
-
- smb2_set_sparse(xid, tcon, cfile, inode, false);
- rc = 0;
- } else {
- smb2_set_sparse(xid, tcon, cfile, inode, false);
- rc = 0;
- if (i_size_read(inode) < off + len) {
- eof = cpu_to_le64(off + len);
- rc = SMB2_set_eof(xid, tcon, cfile->fid.persistent_fid,
- cfile->fid.volatile_fid, cfile->pid,
- &eof);
+ goto out;
}
}
+ smb2_set_sparse(xid, tcon, cfile, inode, false);
+ rc = 0;
+
+out:
if (rc)
trace_smb3_falloc_err(xid, cfile->fid.persistent_fid, tcon->tid,
tcon->ses->Suid, off, len, rc);
@@ -3243,22 +3478,38 @@ static long smb3_fallocate(struct file *file, struct cifs_tcon *tcon, int mode,
static void
smb2_downgrade_oplock(struct TCP_Server_Info *server,
- struct cifsInodeInfo *cinode, bool set_level2)
+ struct cifsInodeInfo *cinode, __u32 oplock,
+ unsigned int epoch, bool *purge_cache)
{
- if (set_level2)
- server->ops->set_oplock_level(cinode, SMB2_OPLOCK_LEVEL_II,
- 0, NULL);
- else
- server->ops->set_oplock_level(cinode, 0, 0, NULL);
+ server->ops->set_oplock_level(cinode, oplock, 0, NULL);
}
static void
-smb21_downgrade_oplock(struct TCP_Server_Info *server,
- struct cifsInodeInfo *cinode, bool set_level2)
+smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
+ unsigned int epoch, bool *purge_cache);
+
+static void
+smb3_downgrade_oplock(struct TCP_Server_Info *server,
+ struct cifsInodeInfo *cinode, __u32 oplock,
+ unsigned int epoch, bool *purge_cache)
{
- server->ops->set_oplock_level(cinode,
- set_level2 ? SMB2_LEASE_READ_CACHING_HE :
- 0, 0, NULL);
+ unsigned int old_state = cinode->oplock;
+ unsigned int old_epoch = cinode->epoch;
+ unsigned int new_state;
+
+ if (epoch > old_epoch) {
+ smb21_set_oplock_level(cinode, oplock, 0, NULL);
+ cinode->epoch = epoch;
+ }
+
+ new_state = cinode->oplock;
+ *purge_cache = false;
+
+ if ((old_state & CIFS_CACHE_READ_FLG) != 0 &&
+ (new_state & CIFS_CACHE_READ_FLG) == 0)
+ *purge_cache = true;
+ else if (old_state == new_state && (epoch - old_epoch > 1))
+ *purge_cache = true;
}
static void
@@ -3295,6 +3546,11 @@ smb21_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock,
if (oplock == SMB2_OPLOCK_LEVEL_NOCHANGE)
return;
+ /* Check if the server granted an oplock rather than a lease */
+ if (oplock & SMB2_OPLOCK_LEVEL_EXCLUSIVE)
+ return smb2_set_oplock_level(cinode, oplock, epoch,
+ purge_cache);
+
if (oplock & SMB2_LEASE_READ_CACHING_HE) {
new_oplock |= CIFS_CACHE_READ_FLG;
strcat(message, "R");
@@ -3555,14 +3811,16 @@ smb2_get_enc_key(struct TCP_Server_Info *server, __u64 ses_id, int enc, u8 *key)
u8 *ses_enc_key;
spin_lock(&cifs_tcp_ses_lock);
- list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
- if (ses->Suid != ses_id)
- continue;
- ses_enc_key = enc ? ses->smb3encryptionkey :
- ses->smb3decryptionkey;
- memcpy(key, ses_enc_key, SMB3_SIGN_KEY_SIZE);
- spin_unlock(&cifs_tcp_ses_lock);
- return 0;
+ list_for_each_entry(server, &cifs_tcp_ses_list, tcp_ses_list) {
+ list_for_each_entry(ses, &server->smb_ses_list, smb_ses_list) {
+ if (ses->Suid == ses_id) {
+ ses_enc_key = enc ? ses->smb3encryptionkey :
+ ses->smb3decryptionkey;
+ memcpy(key, ses_enc_key, SMB3_SIGN_KEY_SIZE);
+ spin_unlock(&cifs_tcp_ses_lock);
+ return 0;
+ }
+ }
}
spin_unlock(&cifs_tcp_ses_lock);
@@ -3595,14 +3853,14 @@ crypt_message(struct TCP_Server_Info *server, int num_rqst,
rc = smb2_get_enc_key(server, tr_hdr->SessionId, enc, key);
if (rc) {
- cifs_dbg(VFS, "%s: Could not get %scryption key\n", __func__,
+ cifs_server_dbg(VFS, "%s: Could not get %scryption key\n", __func__,
enc ? "en" : "de");
return 0;
}
rc = smb3_crypto_aead_allocate(server);
if (rc) {
- cifs_dbg(VFS, "%s: crypto alloc failed\n", __func__);
+ cifs_server_dbg(VFS, "%s: crypto alloc failed\n", __func__);
return rc;
}
@@ -3610,19 +3868,19 @@ crypt_message(struct TCP_Server_Info *server, int num_rqst,
server->secmech.ccmaesdecrypt;
rc = crypto_aead_setkey(tfm, key, SMB3_SIGN_KEY_SIZE);
if (rc) {
- cifs_dbg(VFS, "%s: Failed to set aead key %d\n", __func__, rc);
+ cifs_server_dbg(VFS, "%s: Failed to set aead key %d\n", __func__, rc);
return rc;
}
rc = crypto_aead_setauthsize(tfm, SMB2_SIGNATURE_SIZE);
if (rc) {
- cifs_dbg(VFS, "%s: Failed to set authsize %d\n", __func__, rc);
+ cifs_server_dbg(VFS, "%s: Failed to set authsize %d\n", __func__, rc);
return rc;
}
req = aead_request_alloc(tfm, GFP_KERNEL);
if (!req) {
- cifs_dbg(VFS, "%s: Failed to alloc aead request\n", __func__);
+ cifs_server_dbg(VFS, "%s: Failed to alloc aead request\n", __func__);
return -ENOMEM;
}
@@ -3633,7 +3891,7 @@ crypt_message(struct TCP_Server_Info *server, int num_rqst,
sg = init_sg(num_rqst, rqst, sign);
if (!sg) {
- cifs_dbg(VFS, "%s: Failed to init sg\n", __func__);
+ cifs_server_dbg(VFS, "%s: Failed to init sg\n", __func__);
rc = -ENOMEM;
goto free_req;
}
@@ -3641,7 +3899,7 @@ crypt_message(struct TCP_Server_Info *server, int num_rqst,
iv_len = crypto_aead_ivsize(tfm);
iv = kzalloc(iv_len, GFP_KERNEL);
if (!iv) {
- cifs_dbg(VFS, "%s: Failed to alloc iv\n", __func__);
+ cifs_server_dbg(VFS, "%s: Failed to alloc iv\n", __func__);
rc = -ENOMEM;
goto free_sg;
}
@@ -3883,7 +4141,7 @@ handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid,
bool use_rdma_mr = false;
if (shdr->Command != SMB2_READ) {
- cifs_dbg(VFS, "only big read responses are supported\n");
+ cifs_server_dbg(VFS, "only big read responses are supported\n");
return -ENOTSUPP;
}
@@ -3998,8 +4256,56 @@ handle_read_data(struct TCP_Server_Info *server, struct mid_q_entry *mid,
return length;
}
+struct smb2_decrypt_work {
+ struct work_struct decrypt;
+ struct TCP_Server_Info *server;
+ struct page **ppages;
+ char *buf;
+ unsigned int npages;
+ unsigned int len;
+};
+
+
+static void smb2_decrypt_offload(struct work_struct *work)
+{
+ struct smb2_decrypt_work *dw = container_of(work,
+ struct smb2_decrypt_work, decrypt);
+ int i, rc;
+ struct mid_q_entry *mid;
+
+ rc = decrypt_raw_data(dw->server, dw->buf, dw->server->vals->read_rsp_size,
+ dw->ppages, dw->npages, dw->len);
+ if (rc) {
+ cifs_dbg(VFS, "error decrypting rc=%d\n", rc);
+ goto free_pages;
+ }
+
+ dw->server->lstrp = jiffies;
+ mid = smb2_find_mid(dw->server, dw->buf);
+ if (mid == NULL)
+ cifs_dbg(FYI, "mid not found\n");
+ else {
+ mid->decrypted = true;
+ rc = handle_read_data(dw->server, mid, dw->buf,
+ dw->server->vals->read_rsp_size,
+ dw->ppages, dw->npages, dw->len);
+ mid->callback(mid);
+ cifs_mid_q_entry_release(mid);
+ }
+
+free_pages:
+ for (i = dw->npages-1; i >= 0; i--)
+ put_page(dw->ppages[i]);
+
+ kfree(dw->ppages);
+ cifs_small_buf_release(dw->buf);
+ kfree(dw);
+}
+
+
static int
-receive_encrypted_read(struct TCP_Server_Info *server, struct mid_q_entry **mid)
+receive_encrypted_read(struct TCP_Server_Info *server, struct mid_q_entry **mid,
+ int *num_mids)
{
char *buf = server->smallbuf;
struct smb2_transform_hdr *tr_hdr = (struct smb2_transform_hdr *)buf;
@@ -4009,7 +4315,9 @@ receive_encrypted_read(struct TCP_Server_Info *server, struct mid_q_entry **mid)
unsigned int buflen = server->pdu_size;
int rc;
int i = 0;
+ struct smb2_decrypt_work *dw;
+ *num_mids = 1;
len = min_t(unsigned int, buflen, server->vals->read_rsp_size +
sizeof(struct smb2_transform_hdr)) - HEADER_SIZE(server) + 1;
@@ -4045,6 +4353,32 @@ receive_encrypted_read(struct TCP_Server_Info *server, struct mid_q_entry **mid)
if (rc)
goto free_pages;
+ /*
+ * For large reads, offload to different thread for better performance,
+ * use more cores decrypting which can be expensive
+ */
+
+ if ((server->min_offload) && (server->in_flight > 1) &&
+ (server->pdu_size >= server->min_offload)) {
+ dw = kmalloc(sizeof(struct smb2_decrypt_work), GFP_KERNEL);
+ if (dw == NULL)
+ goto non_offloaded_decrypt;
+
+ dw->buf = server->smallbuf;
+ server->smallbuf = (char *)cifs_small_buf_get();
+
+ INIT_WORK(&dw->decrypt, smb2_decrypt_offload);
+
+ dw->npages = npages;
+ dw->server = server;
+ dw->ppages = pages;
+ dw->len = len;
+ queue_work(decrypt_wq, &dw->decrypt);
+ *num_mids = 0; /* worker thread takes care of finding mid */
+ return -1;
+ }
+
+non_offloaded_decrypt:
rc = decrypt_raw_data(server, buf, server->vals->read_rsp_size,
pages, npages, len);
if (rc)
@@ -4129,7 +4463,7 @@ one_more:
}
if (*num_mids >= MAX_COMPOUND) {
- cifs_dbg(VFS, "too many PDUs in compound\n");
+ cifs_server_dbg(VFS, "too many PDUs in compound\n");
return -1;
}
bufs[*num_mids] = buf;
@@ -4175,7 +4509,7 @@ smb3_receive_transform(struct TCP_Server_Info *server,
if (pdu_length < sizeof(struct smb2_transform_hdr) +
sizeof(struct smb2_sync_hdr)) {
- cifs_dbg(VFS, "Transform message is too small (%u)\n",
+ cifs_server_dbg(VFS, "Transform message is too small (%u)\n",
pdu_length);
cifs_reconnect(server);
wake_up(&server->response_q);
@@ -4183,7 +4517,7 @@ smb3_receive_transform(struct TCP_Server_Info *server,
}
if (pdu_length < orig_len + sizeof(struct smb2_transform_hdr)) {
- cifs_dbg(VFS, "Transform message is broken\n");
+ cifs_server_dbg(VFS, "Transform message is broken\n");
cifs_reconnect(server);
wake_up(&server->response_q);
return -ECONNABORTED;
@@ -4191,8 +4525,7 @@ smb3_receive_transform(struct TCP_Server_Info *server,
/* TODO: add support for compounds containing READ. */
if (pdu_length > CIFSMaxBufSize + MAX_HEADER_SIZE(server)) {
- *num_mids = 1;
- return receive_encrypted_read(server, &mids[0]);
+ return receive_encrypted_read(server, &mids[0], num_mids);
}
return receive_encrypted_standard(server, mids, bufs, num_mids);
@@ -4227,7 +4560,6 @@ smb2_make_node(unsigned int xid, struct inode *inode,
{
struct cifs_sb_info *cifs_sb = CIFS_SB(inode->i_sb);
int rc = -EPERM;
- int create_options = CREATE_NOT_DIR | CREATE_OPTION_SPECIAL;
FILE_ALL_INFO *buf = NULL;
struct cifs_io_parms io_parms;
__u32 oplock = 0;
@@ -4263,13 +4595,11 @@ smb2_make_node(unsigned int xid, struct inode *inode,
goto out;
}
- if (backup_cred(cifs_sb))
- create_options |= CREATE_OPEN_BACKUP_INTENT;
-
oparms.tcon = tcon;
oparms.cifs_sb = cifs_sb;
oparms.desired_access = GENERIC_WRITE;
- oparms.create_options = create_options;
+ oparms.create_options = cifs_create_options(cifs_sb, CREATE_NOT_DIR |
+ CREATE_OPTION_SPECIAL);
oparms.disposition = FILE_CREATE;
oparms.path = full_path;
oparms.fid = &fid;
@@ -4438,7 +4768,7 @@ struct smb_version_operations smb21_operations = {
.print_stats = smb2_print_stats,
.is_oplock_break = smb2_is_valid_oplock_break,
.handle_cancelled_mid = smb2_handle_cancelled_mid,
- .downgrade_oplock = smb21_downgrade_oplock,
+ .downgrade_oplock = smb2_downgrade_oplock,
.need_neg = smb2_need_neg,
.negotiate = smb2_negotiate,
.negotiate_wsize = smb2_negotiate_wsize,
@@ -4498,6 +4828,7 @@ struct smb_version_operations smb21_operations = {
.wp_retry_size = smb2_wp_retry_size,
.dir_needs_close = smb2_dir_needs_close,
.enum_snapshots = smb3_enum_snapshots,
+ .notify = smb3_notify,
.get_dfs_refer = smb2_get_dfs_refer,
.select_sectype = smb2_select_sectype,
#ifdef CONFIG_CIFS_XATTR
@@ -4538,7 +4869,7 @@ struct smb_version_operations smb30_operations = {
.dump_share_caps = smb2_dump_share_caps,
.is_oplock_break = smb2_is_valid_oplock_break,
.handle_cancelled_mid = smb2_handle_cancelled_mid,
- .downgrade_oplock = smb21_downgrade_oplock,
+ .downgrade_oplock = smb3_downgrade_oplock,
.need_neg = smb2_need_neg,
.negotiate = smb2_negotiate,
.negotiate_wsize = smb3_negotiate_wsize,
@@ -4570,6 +4901,7 @@ struct smb_version_operations smb30_operations = {
.open = smb2_open_file,
.set_fid = smb2_set_fid,
.close = smb2_close_file,
+ .close_getattr = smb2_close_getattr,
.flush = smb2_flush_file,
.async_readv = smb2_async_readv,
.async_writev = smb2_async_writev,
@@ -4603,6 +4935,7 @@ struct smb_version_operations smb30_operations = {
.dir_needs_close = smb2_dir_needs_close,
.fallocate = smb3_fallocate,
.enum_snapshots = smb3_enum_snapshots,
+ .notify = smb3_notify,
.init_transform_rq = smb3_init_transform_rq,
.is_transform_hdr = smb3_is_transform_hdr,
.receive_transform = smb3_receive_transform,
@@ -4646,7 +4979,7 @@ struct smb_version_operations smb311_operations = {
.dump_share_caps = smb2_dump_share_caps,
.is_oplock_break = smb2_is_valid_oplock_break,
.handle_cancelled_mid = smb2_handle_cancelled_mid,
- .downgrade_oplock = smb21_downgrade_oplock,
+ .downgrade_oplock = smb3_downgrade_oplock,
.need_neg = smb2_need_neg,
.negotiate = smb2_negotiate,
.negotiate_wsize = smb3_negotiate_wsize,
@@ -4679,6 +5012,7 @@ struct smb_version_operations smb311_operations = {
.open = smb2_open_file,
.set_fid = smb2_set_fid,
.close = smb2_close_file,
+ .close_getattr = smb2_close_getattr,
.flush = smb2_flush_file,
.async_readv = smb2_async_readv,
.async_writev = smb2_async_writev,
@@ -4712,6 +5046,7 @@ struct smb_version_operations smb311_operations = {
.dir_needs_close = smb2_dir_needs_close,
.fallocate = smb3_fallocate,
.enum_snapshots = smb3_enum_snapshots,
+ .notify = smb3_notify,
.init_transform_rq = smb3_init_transform_rq,
.is_transform_hdr = smb3_is_transform_hdr,
.receive_transform = smb3_receive_transform,
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