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-rw-r--r--fs/cifs/cifsencrypt.c3
-rw-r--r--fs/cifs/cifsglob.h7
-rw-r--r--fs/cifs/connect.c23
-rw-r--r--fs/cifs/smb2ops.c67
-rw-r--r--fs/cifs/smb2pdu.c16
-rw-r--r--fs/cifs/transport.c21
6 files changed, 70 insertions, 67 deletions
diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c
index 8f7835ccbca1..46f5718754f9 100644
--- a/fs/cifs/cifsencrypt.c
+++ b/fs/cifs/cifsencrypt.c
@@ -32,10 +32,9 @@ int __cifs_calc_signature(struct smb_rqst *rqst,
int rc;
struct kvec *iov = rqst->rq_iov;
int n_vec = rqst->rq_nvec;
- int is_smb2 = server->vals->header_preamble_size == 0;
/* iov[0] is actual data and not the rfc1002 length for SMB2+ */
- if (is_smb2) {
+ if (!is_smb1(server)) {
if (iov[0].iov_len <= 4)
return -EIO;
i = 0;
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h
index f15d7b0c123d..ae7f571a7dba 100644
--- a/fs/cifs/cifsglob.h
+++ b/fs/cifs/cifsglob.h
@@ -557,6 +557,8 @@ struct smb_version_values {
#define HEADER_SIZE(server) (server->vals->header_size)
#define MAX_HEADER_SIZE(server) (server->vals->max_header_size)
+#define HEADER_PREAMBLE_SIZE(server) (server->vals->header_preamble_size)
+#define MID_HEADER_SIZE(server) (HEADER_SIZE(server) - 1 - HEADER_PREAMBLE_SIZE(server))
/**
* CIFS superblock mount flags (mnt_cifs_flags) to consider when
@@ -750,6 +752,11 @@ struct TCP_Server_Info {
#endif
};
+static inline bool is_smb1(struct TCP_Server_Info *server)
+{
+ return HEADER_PREAMBLE_SIZE(server) != 0;
+}
+
static inline void cifs_server_lock(struct TCP_Server_Info *server)
{
unsigned int nofs_flag = memalloc_nofs_save();
diff --git a/fs/cifs/connect.c b/fs/cifs/connect.c
index 3da5da9f16b0..a0a06b6f252b 100644
--- a/fs/cifs/connect.c
+++ b/fs/cifs/connect.c
@@ -871,7 +871,7 @@ smb2_get_credits_from_hdr(char *buffer, struct TCP_Server_Info *server)
/*
* SMB1 does not use credits.
*/
- if (server->vals->header_preamble_size)
+ if (is_smb1(server))
return 0;
return le16_to_cpu(shdr->CreditRequest);
@@ -1050,7 +1050,7 @@ standard_receive3(struct TCP_Server_Info *server, struct mid_q_entry *mid)
/* make sure this will fit in a large buffer */
if (pdu_length > CIFSMaxBufSize + MAX_HEADER_SIZE(server) -
- server->vals->header_preamble_size) {
+ HEADER_PREAMBLE_SIZE(server)) {
cifs_server_dbg(VFS, "SMB response too long (%u bytes)\n", pdu_length);
cifs_reconnect(server, true);
return -ECONNABORTED;
@@ -1065,8 +1065,7 @@ standard_receive3(struct TCP_Server_Info *server, struct mid_q_entry *mid)
/* now read the rest */
length = cifs_read_from_socket(server, buf + HEADER_SIZE(server) - 1,
- pdu_length - HEADER_SIZE(server) + 1
- + server->vals->header_preamble_size);
+ pdu_length - MID_HEADER_SIZE(server));
if (length < 0)
return length;
@@ -1122,7 +1121,7 @@ smb2_add_credits_from_hdr(char *buffer, struct TCP_Server_Info *server)
/*
* SMB1 does not use credits.
*/
- if (server->vals->header_preamble_size)
+ if (is_smb1(server))
return;
if (shdr->CreditRequest) {
@@ -1180,10 +1179,10 @@ cifs_demultiplex_thread(void *p)
if (length < 0)
continue;
- if (server->vals->header_preamble_size == 0)
- server->total_read = 0;
- else
+ if (is_smb1(server))
server->total_read = length;
+ else
+ server->total_read = 0;
/*
* The right amount was read from socket - 4 bytes,
@@ -1198,8 +1197,7 @@ next_pdu:
server->pdu_size = pdu_length;
/* make sure we have enough to get to the MID */
- if (server->pdu_size < HEADER_SIZE(server) - 1 -
- server->vals->header_preamble_size) {
+ if (server->pdu_size < MID_HEADER_SIZE(server)) {
cifs_server_dbg(VFS, "SMB response too short (%u bytes)\n",
server->pdu_size);
cifs_reconnect(server, true);
@@ -1208,9 +1206,8 @@ next_pdu:
/* read down to the MID */
length = cifs_read_from_socket(server,
- buf + server->vals->header_preamble_size,
- HEADER_SIZE(server) - 1
- - server->vals->header_preamble_size);
+ buf + HEADER_PREAMBLE_SIZE(server),
+ MID_HEADER_SIZE(server));
if (length < 0)
continue;
server->total_read += length;
diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c
index 96f3b0573606..4810bd62266a 100644
--- a/fs/cifs/smb2ops.c
+++ b/fs/cifs/smb2ops.c
@@ -3307,26 +3307,43 @@ get_smb2_acl(struct cifs_sb_info *cifs_sb,
return pntsd;
}
+static long smb3_zero_data(struct file *file, struct cifs_tcon *tcon,
+ loff_t offset, loff_t len, unsigned int xid)
+{
+ struct cifsFileInfo *cfile = file->private_data;
+ struct file_zero_data_information fsctl_buf;
+
+ cifs_dbg(FYI, "Offset %lld len %lld\n", offset, len);
+
+ fsctl_buf.FileOffset = cpu_to_le64(offset);
+ fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
+
+ return SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
+ cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
+ (char *)&fsctl_buf,
+ sizeof(struct file_zero_data_information),
+ 0, NULL, NULL);
+}
+
static long smb3_zero_range(struct file *file, struct cifs_tcon *tcon,
loff_t offset, loff_t len, bool keep_size)
{
struct cifs_ses *ses = tcon->ses;
- struct inode *inode;
- struct cifsInodeInfo *cifsi;
+ struct inode *inode = file_inode(file);
+ struct cifsInodeInfo *cifsi = CIFS_I(inode);
struct cifsFileInfo *cfile = file->private_data;
- struct file_zero_data_information fsctl_buf;
long rc;
unsigned int xid;
__le64 eof;
xid = get_xid();
- inode = d_inode(cfile->dentry);
- cifsi = CIFS_I(inode);
-
trace_smb3_zero_enter(xid, cfile->fid.persistent_fid, tcon->tid,
ses->Suid, offset, len);
+ inode_lock(inode);
+ filemap_invalidate_lock(inode->i_mapping);
+
/*
* We zero the range through ioctl, so we need remove the page caches
* first, otherwise the data may be inconsistent with the server.
@@ -3334,26 +3351,12 @@ static long smb3_zero_range(struct file *file, struct cifs_tcon *tcon,
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))
- if (keep_size == false) {
- rc = -EOPNOTSUPP;
- trace_smb3_zero_err(xid, cfile->fid.persistent_fid,
- tcon->tid, ses->Suid, offset, len, rc);
- free_xid(xid);
- return rc;
- }
-
- cifs_dbg(FYI, "Offset %lld len %lld\n", offset, len);
-
- fsctl_buf.FileOffset = cpu_to_le64(offset);
- fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);
+ rc = -EOPNOTSUPP;
+ if (keep_size == false && !CIFS_CACHE_READ(cifsi))
+ goto zero_range_exit;
- rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
- cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
- (char *)&fsctl_buf,
- sizeof(struct file_zero_data_information),
- 0, NULL, NULL);
- if (rc)
+ rc = smb3_zero_data(file, tcon, offset, len, xid);
+ if (rc < 0)
goto zero_range_exit;
/*
@@ -3366,6 +3369,8 @@ static long smb3_zero_range(struct file *file, struct cifs_tcon *tcon,
}
zero_range_exit:
+ filemap_invalidate_unlock(inode->i_mapping);
+ inode_unlock(inode);
free_xid(xid);
if (rc)
trace_smb3_zero_err(xid, cfile->fid.persistent_fid, tcon->tid,
@@ -3379,7 +3384,7 @@ static long smb3_zero_range(struct file *file, struct cifs_tcon *tcon,
static long smb3_punch_hole(struct file *file, struct cifs_tcon *tcon,
loff_t offset, loff_t len)
{
- struct inode *inode;
+ struct inode *inode = file_inode(file);
struct cifsFileInfo *cfile = file->private_data;
struct file_zero_data_information fsctl_buf;
long rc;
@@ -3388,14 +3393,12 @@ static long smb3_punch_hole(struct file *file, struct cifs_tcon *tcon,
xid = get_xid();
- inode = d_inode(cfile->dentry);
-
+ inode_lock(inode);
/* Need to make file sparse, if not already, before freeing range. */
/* Consider adding equivalent for compressed since it could also work */
if (!smb2_set_sparse(xid, tcon, cfile, inode, set_sparse)) {
rc = -EOPNOTSUPP;
- free_xid(xid);
- return rc;
+ goto out;
}
filemap_invalidate_lock(inode->i_mapping);
@@ -3415,8 +3418,10 @@ static long smb3_punch_hole(struct file *file, struct cifs_tcon *tcon,
(char *)&fsctl_buf,
sizeof(struct file_zero_data_information),
CIFSMaxBufSize, NULL, NULL);
- free_xid(xid);
filemap_invalidate_unlock(inode->i_mapping);
+out:
+ inode_unlock(inode);
+ free_xid(xid);
return rc;
}
diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
index 91cfc5b47ac7..128e44e57528 100644
--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@@ -2572,19 +2572,15 @@ alloc_path_with_tree_prefix(__le16 **out_path, int *out_size, int *out_len,
path_len = UniStrnlen((wchar_t *)path, PATH_MAX);
- /*
- * make room for one path separator between the treename and
- * path
- */
- *out_len = treename_len + 1 + path_len;
+ /* make room for one path separator only if @path isn't empty */
+ *out_len = treename_len + (path[0] ? 1 : 0) + path_len;
/*
- * final path needs to be null-terminated UTF16 with a
- * size aligned to 8
+ * final path needs to be 8-byte aligned as specified in
+ * MS-SMB2 2.2.13 SMB2 CREATE Request.
*/
-
- *out_size = roundup((*out_len+1)*2, 8);
- *out_path = kzalloc(*out_size, GFP_KERNEL);
+ *out_size = roundup(*out_len * sizeof(__le16), 8);
+ *out_path = kzalloc(*out_size + sizeof(__le16) /* null */, GFP_KERNEL);
if (!*out_path)
return -ENOMEM;
diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c
index de7aeced7e16..c2fe035e573b 100644
--- a/fs/cifs/transport.c
+++ b/fs/cifs/transport.c
@@ -261,8 +261,8 @@ smb_rqst_len(struct TCP_Server_Info *server, struct smb_rqst *rqst)
int nvec;
unsigned long buflen = 0;
- if (server->vals->header_preamble_size == 0 &&
- rqst->rq_nvec >= 2 && rqst->rq_iov[0].iov_len == 4) {
+ if (!is_smb1(server) && rqst->rq_nvec >= 2 &&
+ rqst->rq_iov[0].iov_len == 4) {
iov = &rqst->rq_iov[1];
nvec = rqst->rq_nvec - 1;
} else {
@@ -346,7 +346,7 @@ __smb_send_rqst(struct TCP_Server_Info *server, int num_rqst,
sigprocmask(SIG_BLOCK, &mask, &oldmask);
/* Generate a rfc1002 marker for SMB2+ */
- if (server->vals->header_preamble_size == 0) {
+ if (!is_smb1(server)) {
struct kvec hiov = {
.iov_base = &rfc1002_marker,
.iov_len = 4
@@ -1238,7 +1238,7 @@ compound_send_recv(const unsigned int xid, struct cifs_ses *ses,
buf = (char *)midQ[i]->resp_buf;
resp_iov[i].iov_base = buf;
resp_iov[i].iov_len = midQ[i]->resp_buf_size +
- server->vals->header_preamble_size;
+ HEADER_PREAMBLE_SIZE(server);
if (midQ[i]->large_buf)
resp_buf_type[i] = CIFS_LARGE_BUFFER;
@@ -1643,7 +1643,7 @@ int
cifs_discard_remaining_data(struct TCP_Server_Info *server)
{
unsigned int rfclen = server->pdu_size;
- int remaining = rfclen + server->vals->header_preamble_size -
+ int remaining = rfclen + HEADER_PREAMBLE_SIZE(server) -
server->total_read;
while (remaining > 0) {
@@ -1689,8 +1689,7 @@ cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid)
unsigned int data_offset, data_len;
struct cifs_readdata *rdata = mid->callback_data;
char *buf = server->smallbuf;
- unsigned int buflen = server->pdu_size +
- server->vals->header_preamble_size;
+ unsigned int buflen = server->pdu_size + HEADER_PREAMBLE_SIZE(server);
bool use_rdma_mr = false;
cifs_dbg(FYI, "%s: mid=%llu offset=%llu bytes=%u\n",
@@ -1724,10 +1723,10 @@ cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid)
/* set up first two iov for signature check and to get credits */
rdata->iov[0].iov_base = buf;
- rdata->iov[0].iov_len = server->vals->header_preamble_size;
- rdata->iov[1].iov_base = buf + server->vals->header_preamble_size;
+ rdata->iov[0].iov_len = HEADER_PREAMBLE_SIZE(server);
+ rdata->iov[1].iov_base = buf + HEADER_PREAMBLE_SIZE(server);
rdata->iov[1].iov_len =
- server->total_read - server->vals->header_preamble_size;
+ server->total_read - HEADER_PREAMBLE_SIZE(server);
cifs_dbg(FYI, "0: iov_base=%p iov_len=%zu\n",
rdata->iov[0].iov_base, rdata->iov[0].iov_len);
cifs_dbg(FYI, "1: iov_base=%p iov_len=%zu\n",
@@ -1752,7 +1751,7 @@ cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid)
}
data_offset = server->ops->read_data_offset(buf) +
- server->vals->header_preamble_size;
+ HEADER_PREAMBLE_SIZE(server);
if (data_offset < server->total_read) {
/*
* win2k8 sometimes sends an offset of 0 when the read
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-18 21:39:09 +0000