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cifs: remove useless parameter 'is_fsctl' from SMB2_ioctl()
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SMB2_ioctl() is always called with is_fsctl = true, so doesn't make any
sense to have it at all.

Thus, always set SMB2_0_IOCTL_IS_FSCTL flag on the request.

Also, as per MS-SMB2 3.3.5.15 "Receiving an SMB2 IOCTL Request", servers
must fail the request if the request flags is zero anyway.

Signed-off-by: Enzo Matsumiya <[email protected]>
Reviewed-by: Tom Talpey <[email protected]>
Signed-off-by: Steve French <[email protected]>
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@ematsumiya
ematsumiya authored and Steve French committed Aug 18, 2022
1 parent 68ed144 commit 400d0ad
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Showing 4 changed files with 24 additions and 36 deletions.
1 change: 0 additions & 1 deletion fs/cifs/smb2file.c
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Original file line number Diff line number Diff line change
Expand Up @@ -61,7 +61,6 @@ smb2_open_file(const unsigned int xid, struct cifs_open_parms *oparms,
nr_ioctl_req.Reserved = 0;
rc = SMB2_ioctl(xid, oparms->tcon, fid->persistent_fid,
fid->volatile_fid, FSCTL_LMR_REQUEST_RESILIENCY,
true /* is_fsctl */,
(char *)&nr_ioctl_req, sizeof(nr_ioctl_req),
CIFSMaxBufSize, NULL, NULL /* no return info */);
if (rc == -EOPNOTSUPP) {
Expand Down
35 changes: 13 additions & 22 deletions fs/cifs/smb2ops.c
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Original file line number Diff line number Diff line change
Expand Up @@ -681,7 +681,7 @@ SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon)
struct cifs_ses *ses = tcon->ses;

rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
FSCTL_QUERY_NETWORK_INTERFACE_INFO, true /* is_fsctl */,
FSCTL_QUERY_NETWORK_INTERFACE_INFO,
NULL /* no data input */, 0 /* no data input */,
CIFSMaxBufSize, (char **)&out_buf, &ret_data_len);
if (rc == -EOPNOTSUPP) {
Expand Down Expand Up @@ -1323,9 +1323,8 @@ SMB2_request_res_key(const unsigned int xid, struct cifs_tcon *tcon,
struct resume_key_req *res_key;

rc = SMB2_ioctl(xid, tcon, persistent_fid, volatile_fid,
FSCTL_SRV_REQUEST_RESUME_KEY, true /* is_fsctl */,
NULL, 0 /* no input */, CIFSMaxBufSize,
(char **)&res_key, &ret_data_len);
FSCTL_SRV_REQUEST_RESUME_KEY, NULL, 0 /* no input */,
CIFSMaxBufSize, (char **)&res_key, &ret_data_len);

if (rc == -EOPNOTSUPP) {
pr_warn_once("Server share %s does not support copy range\n", tcon->treeName);
Expand Down Expand Up @@ -1467,7 +1466,7 @@ smb2_ioctl_query_info(const unsigned int xid,
rqst[1].rq_nvec = SMB2_IOCTL_IOV_SIZE;

rc = SMB2_ioctl_init(tcon, server, &rqst[1], COMPOUND_FID, COMPOUND_FID,
qi.info_type, true, buffer, qi.output_buffer_length,
qi.info_type, buffer, qi.output_buffer_length,
CIFSMaxBufSize - MAX_SMB2_CREATE_RESPONSE_SIZE -
MAX_SMB2_CLOSE_RESPONSE_SIZE);
free_req1_func = SMB2_ioctl_free;
Expand Down Expand Up @@ -1643,9 +1642,8 @@ smb2_copychunk_range(const unsigned int xid,
retbuf = NULL;
rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
trgtfile->fid.volatile_fid, FSCTL_SRV_COPYCHUNK_WRITE,
true /* is_fsctl */, (char *)pcchunk,
sizeof(struct copychunk_ioctl), CIFSMaxBufSize,
(char **)&retbuf, &ret_data_len);
(char *)pcchunk, sizeof(struct copychunk_ioctl),
CIFSMaxBufSize, (char **)&retbuf, &ret_data_len);
if (rc == 0) {
if (ret_data_len !=
sizeof(struct copychunk_ioctl_rsp)) {
Expand Down Expand Up @@ -1805,7 +1803,6 @@ static bool smb2_set_sparse(const unsigned int xid, struct cifs_tcon *tcon,

rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
cfile->fid.volatile_fid, FSCTL_SET_SPARSE,
true /* is_fctl */,
&setsparse, 1, CIFSMaxBufSize, NULL, NULL);
if (rc) {
tcon->broken_sparse_sup = true;
Expand Down Expand Up @@ -1888,7 +1885,6 @@ smb2_duplicate_extents(const unsigned int xid,
rc = SMB2_ioctl(xid, tcon, trgtfile->fid.persistent_fid,
trgtfile->fid.volatile_fid,
FSCTL_DUPLICATE_EXTENTS_TO_FILE,
true /* is_fsctl */,
(char *)&dup_ext_buf,
sizeof(struct duplicate_extents_to_file),
CIFSMaxBufSize, NULL,
Expand Down Expand Up @@ -1923,7 +1919,6 @@ smb3_set_integrity(const unsigned int xid, struct cifs_tcon *tcon,
return SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
cfile->fid.volatile_fid,
FSCTL_SET_INTEGRITY_INFORMATION,
true /* is_fsctl */,
(char *)&integr_info,
sizeof(struct fsctl_set_integrity_information_req),
CIFSMaxBufSize, NULL,
Expand Down Expand Up @@ -1976,7 +1971,6 @@ smb3_enum_snapshots(const unsigned int xid, struct cifs_tcon *tcon,
rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
cfile->fid.volatile_fid,
FSCTL_SRV_ENUMERATE_SNAPSHOTS,
true /* is_fsctl */,
NULL, 0 /* no input data */, max_response_size,
(char **)&retbuf,
&ret_data_len);
Expand Down Expand Up @@ -2699,7 +2693,6 @@ smb2_get_dfs_refer(const unsigned int xid, struct cifs_ses *ses,
do {
rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
FSCTL_DFS_GET_REFERRALS,
true /* is_fsctl */,
(char *)dfs_req, dfs_req_size, CIFSMaxBufSize,
(char **)&dfs_rsp, &dfs_rsp_size);
if (!is_retryable_error(rc))
Expand Down Expand Up @@ -2906,8 +2899,7 @@ smb2_query_symlink(const unsigned int xid, struct cifs_tcon *tcon,

rc = SMB2_ioctl_init(tcon, server,
&rqst[1], fid.persistent_fid,
fid.volatile_fid, FSCTL_GET_REPARSE_POINT,
true /* is_fctl */, NULL, 0,
fid.volatile_fid, FSCTL_GET_REPARSE_POINT, NULL, 0,
CIFSMaxBufSize -
MAX_SMB2_CREATE_RESPONSE_SIZE -
MAX_SMB2_CLOSE_RESPONSE_SIZE);
Expand Down Expand Up @@ -3087,8 +3079,7 @@ smb2_query_reparse_tag(const unsigned int xid, struct cifs_tcon *tcon,

rc = SMB2_ioctl_init(tcon, server,
&rqst[1], COMPOUND_FID,
COMPOUND_FID, FSCTL_GET_REPARSE_POINT,
true /* is_fctl */, NULL, 0,
COMPOUND_FID, FSCTL_GET_REPARSE_POINT, NULL, 0,
CIFSMaxBufSize -
MAX_SMB2_CREATE_RESPONSE_SIZE -
MAX_SMB2_CLOSE_RESPONSE_SIZE);
Expand Down Expand Up @@ -3358,7 +3349,7 @@ static long smb3_zero_range(struct file *file, struct cifs_tcon *tcon,
fsctl_buf.BeyondFinalZero = cpu_to_le64(offset + len);

rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA, true,
cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
(char *)&fsctl_buf,
sizeof(struct file_zero_data_information),
0, NULL, NULL);
Expand Down Expand Up @@ -3421,7 +3412,7 @@ static long smb3_punch_hole(struct file *file, struct cifs_tcon *tcon,

rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
cfile->fid.volatile_fid, FSCTL_SET_ZERO_DATA,
true /* is_fctl */, (char *)&fsctl_buf,
(char *)&fsctl_buf,
sizeof(struct file_zero_data_information),
CIFSMaxBufSize, NULL, NULL);
free_xid(xid);
Expand Down Expand Up @@ -3481,7 +3472,7 @@ static int smb3_simple_fallocate_range(unsigned int xid,
in_data.length = cpu_to_le64(len);
rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
cfile->fid.volatile_fid,
FSCTL_QUERY_ALLOCATED_RANGES, true,
FSCTL_QUERY_ALLOCATED_RANGES,
(char *)&in_data, sizeof(in_data),
1024 * sizeof(struct file_allocated_range_buffer),
(char **)&out_data, &out_data_len);
Expand Down Expand Up @@ -3802,7 +3793,7 @@ static loff_t smb3_llseek(struct file *file, struct cifs_tcon *tcon, loff_t offs

rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
cfile->fid.volatile_fid,
FSCTL_QUERY_ALLOCATED_RANGES, true,
FSCTL_QUERY_ALLOCATED_RANGES,
(char *)&in_data, sizeof(in_data),
sizeof(struct file_allocated_range_buffer),
(char **)&out_data, &out_data_len);
Expand Down Expand Up @@ -3862,7 +3853,7 @@ static int smb3_fiemap(struct cifs_tcon *tcon,

rc = SMB2_ioctl(xid, tcon, cfile->fid.persistent_fid,
cfile->fid.volatile_fid,
FSCTL_QUERY_ALLOCATED_RANGES, true,
FSCTL_QUERY_ALLOCATED_RANGES,
(char *)&in_data, sizeof(in_data),
1024 * sizeof(struct file_allocated_range_buffer),
(char **)&out_data, &out_data_len);
Expand Down
20 changes: 9 additions & 11 deletions fs/cifs/smb2pdu.c
View file
Original file line number Diff line number Diff line change
Expand Up @@ -1173,7 +1173,7 @@ int smb3_validate_negotiate(const unsigned int xid, struct cifs_tcon *tcon)
}

rc = SMB2_ioctl(xid, tcon, NO_FILE_ID, NO_FILE_ID,
FSCTL_VALIDATE_NEGOTIATE_INFO, true /* is_fsctl */,
FSCTL_VALIDATE_NEGOTIATE_INFO,
(char *)pneg_inbuf, inbuflen, CIFSMaxBufSize,
(char **)&pneg_rsp, &rsplen);
if (rc == -EOPNOTSUPP) {
Expand Down Expand Up @@ -3056,7 +3056,7 @@ int
SMB2_ioctl_init(struct cifs_tcon *tcon, struct TCP_Server_Info *server,
struct smb_rqst *rqst,
u64 persistent_fid, u64 volatile_fid, u32 opcode,
bool is_fsctl, char *in_data, u32 indatalen,
char *in_data, u32 indatalen,
__u32 max_response_size)
{
struct smb2_ioctl_req *req;
Expand Down Expand Up @@ -3131,10 +3131,8 @@ SMB2_ioctl_init(struct cifs_tcon *tcon, struct TCP_Server_Info *server,
req->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
req->Flags = 0;
/* always an FSCTL (for now) */
req->Flags = cpu_to_le32(SMB2_0_IOCTL_IS_FSCTL);

/* validate negotiate request must be signed - see MS-SMB2 3.2.5.5 */
if (opcode == FSCTL_VALIDATE_NEGOTIATE_INFO)
Expand All @@ -3161,9 +3159,9 @@ SMB2_ioctl_free(struct smb_rqst *rqst)
*/
int
SMB2_ioctl(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid,
u64 volatile_fid, u32 opcode, bool is_fsctl,
char *in_data, u32 indatalen, u32 max_out_data_len,
char **out_data, u32 *plen /* returned data len */)
u64 volatile_fid, u32 opcode, char *in_data, u32 indatalen,
u32 max_out_data_len, char **out_data,
u32 *plen /* returned data len */)
{
struct smb_rqst rqst;
struct smb2_ioctl_rsp *rsp = NULL;
Expand Down Expand Up @@ -3205,7 +3203,7 @@ SMB2_ioctl(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid,

rc = SMB2_ioctl_init(tcon, server,
&rqst, persistent_fid, volatile_fid, opcode,
is_fsctl, in_data, indatalen, max_out_data_len);
in_data, indatalen, max_out_data_len);
if (rc)
goto ioctl_exit;

Expand Down Expand Up @@ -3297,7 +3295,7 @@ SMB2_set_compression(const unsigned int xid, struct cifs_tcon *tcon,
cpu_to_le16(COMPRESSION_FORMAT_DEFAULT);

rc = SMB2_ioctl(xid, tcon, persistent_fid, volatile_fid,
FSCTL_SET_COMPRESSION, true /* is_fsctl */,
FSCTL_SET_COMPRESSION,
(char *)&fsctl_input /* data input */,
2 /* in data len */, CIFSMaxBufSize /* max out data */,
&ret_data /* out data */, NULL);
Expand Down
4 changes: 2 additions & 2 deletions fs/cifs/smb2proto.h
View file
Original file line number Diff line number Diff line change
Expand Up @@ -137,13 +137,13 @@ extern int SMB2_open_init(struct cifs_tcon *tcon,
extern void SMB2_open_free(struct smb_rqst *rqst);
extern int SMB2_ioctl(const unsigned int xid, struct cifs_tcon *tcon,
u64 persistent_fid, u64 volatile_fid, u32 opcode,
bool is_fsctl, char *in_data, u32 indatalen, u32 maxoutlen,
char *in_data, u32 indatalen, u32 maxoutlen,
char **out_data, u32 *plen /* returned data len */);
extern int SMB2_ioctl_init(struct cifs_tcon *tcon,
struct TCP_Server_Info *server,
struct smb_rqst *rqst,
u64 persistent_fid, u64 volatile_fid, u32 opcode,
bool is_fsctl, char *in_data, u32 indatalen,
char *in_data, u32 indatalen,
__u32 max_response_size);
extern void SMB2_ioctl_free(struct smb_rqst *rqst);
extern int SMB2_change_notify(const unsigned int xid, struct cifs_tcon *tcon,
Expand Down

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