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Code Issues Releases Wiki Activity

cifs: remove rfc1002 header from smb2_create_req

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Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <smfrench@gmail.com>
Acked-by: Pavel Shilovsky <pshilov@microsoft.com>
Reviewed-by: Aurelien Aptel <aaptel@suse.com>
This commit is contained in:
Ronnie Sahlberg 2017-11-20 11:24:38 +11:00 committed by Steve French
parent 88ea5cb7d4
commit 4f33bc3587
2 changed files with 13 additions and 19 deletions
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30
fs/cifs/smb2pdu.c
View file

@ -1525,11 +1525,10 @@ add_lease_context(struct TCP_Server_Info *server, struct kvec *iov,
req->RequestedOplockLevel = SMB2_OPLOCK_LEVEL_LEASE; req->RequestedOplockLevel = SMB2_OPLOCK_LEVEL_LEASE;
if (!req->CreateContextsOffset) if (!req->CreateContextsOffset)
req->CreateContextsOffset = cpu_to_le32( req->CreateContextsOffset = cpu_to_le32(
sizeof(struct smb2_create_req) - 4 + sizeof(struct smb2_create_req) +
iov[num - 1].iov_len); iov[num - 1].iov_len);
le32_add_cpu(&req->CreateContextsLength, le32_add_cpu(&req->CreateContextsLength,
server->vals->create_lease_size); server->vals->create_lease_size);
inc_rfc1001_len(&req->hdr, server->vals->create_lease_size);
*num_iovec = num + 1; *num_iovec = num + 1;
return 0; return 0;
} }
@ -1609,10 +1608,9 @@ add_durable_v2_context(struct kvec *iov, unsigned int *num_iovec,
iov[num].iov_len = sizeof(struct create_durable_v2); iov[num].iov_len = sizeof(struct create_durable_v2);
if (!req->CreateContextsOffset) if (!req->CreateContextsOffset)
req->CreateContextsOffset = req->CreateContextsOffset =
cpu_to_le32(sizeof(struct smb2_create_req) - 4 + cpu_to_le32(sizeof(struct smb2_create_req) +
iov[1].iov_len); iov[1].iov_len);
le32_add_cpu(&req->CreateContextsLength, sizeof(struct create_durable_v2)); le32_add_cpu(&req->CreateContextsLength, sizeof(struct create_durable_v2));
inc_rfc1001_len(&req->hdr, sizeof(struct create_durable_v2));
*num_iovec = num + 1; *num_iovec = num + 1;
return 0; return 0;
} }
@ -1633,12 +1631,10 @@ add_durable_reconnect_v2_context(struct kvec *iov, unsigned int *num_iovec,
iov[num].iov_len = sizeof(struct create_durable_handle_reconnect_v2); iov[num].iov_len = sizeof(struct create_durable_handle_reconnect_v2);
if (!req->CreateContextsOffset) if (!req->CreateContextsOffset)
req->CreateContextsOffset = req->CreateContextsOffset =
cpu_to_le32(sizeof(struct smb2_create_req) - 4 + cpu_to_le32(sizeof(struct smb2_create_req) +
iov[1].iov_len); iov[1].iov_len);
le32_add_cpu(&req->CreateContextsLength, le32_add_cpu(&req->CreateContextsLength,
sizeof(struct create_durable_handle_reconnect_v2)); sizeof(struct create_durable_handle_reconnect_v2));
inc_rfc1001_len(&req->hdr,
sizeof(struct create_durable_handle_reconnect_v2));
*num_iovec = num + 1; *num_iovec = num + 1;
return 0; return 0;
} }
@ -1669,10 +1665,9 @@ add_durable_context(struct kvec *iov, unsigned int *num_iovec,
iov[num].iov_len = sizeof(struct create_durable); iov[num].iov_len = sizeof(struct create_durable);
if (!req->CreateContextsOffset) if (!req->CreateContextsOffset)
req->CreateContextsOffset = req->CreateContextsOffset =
cpu_to_le32(sizeof(struct smb2_create_req) - 4 + cpu_to_le32(sizeof(struct smb2_create_req) +
iov[1].iov_len); iov[1].iov_len);
le32_add_cpu(&req->CreateContextsLength, sizeof(struct create_durable)); le32_add_cpu(&req->CreateContextsLength, sizeof(struct create_durable));
inc_rfc1001_len(&req->hdr, sizeof(struct create_durable));
*num_iovec = num + 1; *num_iovec = num + 1;
return 0; return 0;
} }
@ -1743,6 +1738,7 @@ SMB2_open(const unsigned int xid, struct cifs_open_parms *oparms, __le16 *path,
__u32 file_attributes = 0; __u32 file_attributes = 0;
char *dhc_buf = NULL, *lc_buf = NULL; char *dhc_buf = NULL, *lc_buf = NULL;
int flags = 0; int flags = 0;
unsigned int total_len;
cifs_dbg(FYI, "create/open\n"); cifs_dbg(FYI, "create/open\n");
@ -1751,7 +1747,8 @@ SMB2_open(const unsigned int xid, struct cifs_open_parms *oparms, __le16 *path,
else else
return -EIO; return -EIO;
rc = small_smb2_init(SMB2_CREATE, tcon, (void **) &req); rc = smb2_plain_req_init(SMB2_CREATE, tcon, (void **) &req, &total_len);
if (rc) if (rc)
return rc; return rc;
@ -1772,12 +1769,10 @@ SMB2_open(const unsigned int xid, struct cifs_open_parms *oparms, __le16 *path,
req->CreateOptions = cpu_to_le32(oparms->create_options & CREATE_OPTIONS_MASK); req->CreateOptions = cpu_to_le32(oparms->create_options & CREATE_OPTIONS_MASK);
iov[0].iov_base = (char *)req; iov[0].iov_base = (char *)req;
/* 4 for rfc1002 length field */
iov[0].iov_len = get_rfc1002_length(req) + 4;
/* -1 since last byte is buf[0] which is sent below (path) */ /* -1 since last byte is buf[0] which is sent below (path) */
iov[0].iov_len--; iov[0].iov_len = total_len - 1;
req->NameOffset = cpu_to_le16(sizeof(struct smb2_create_req) - 4); req->NameOffset = cpu_to_le16(sizeof(struct smb2_create_req));
/* [MS-SMB2] 2.2.13 NameOffset: /* [MS-SMB2] 2.2.13 NameOffset:
* If SMB2_FLAGS_DFS_OPERATIONS is set in the Flags field of * If SMB2_FLAGS_DFS_OPERATIONS is set in the Flags field of
@ -1790,7 +1785,7 @@ SMB2_open(const unsigned int xid, struct cifs_open_parms *oparms, __le16 *path,
if (tcon->share_flags & SHI1005_FLAGS_DFS) { if (tcon->share_flags & SHI1005_FLAGS_DFS) {
int name_len; int name_len;
req->hdr.sync_hdr.Flags |= SMB2_FLAGS_DFS_OPERATIONS; req->sync_hdr.Flags |= SMB2_FLAGS_DFS_OPERATIONS;
rc = alloc_path_with_tree_prefix(&copy_path, &copy_size, rc = alloc_path_with_tree_prefix(&copy_path, &copy_size,
&name_len, &name_len,
tcon->treeName, path); tcon->treeName, path);
@ -1817,8 +1812,6 @@ SMB2_open(const unsigned int xid, struct cifs_open_parms *oparms, __le16 *path,
iov[1].iov_len = uni_path_len; iov[1].iov_len = uni_path_len;
iov[1].iov_base = path; iov[1].iov_base = path;
/* -1 since last byte is buf[0] which was counted in smb2_buf_len */
inc_rfc1001_len(req, uni_path_len - 1);
if (!server->oplocks) if (!server->oplocks)
*oplock = SMB2_OPLOCK_LEVEL_NONE; *oplock = SMB2_OPLOCK_LEVEL_NONE;
@ -1856,7 +1849,8 @@ SMB2_open(const unsigned int xid, struct cifs_open_parms *oparms, __le16 *path,
dhc_buf = iov[n_iov-1].iov_base; dhc_buf = iov[n_iov-1].iov_base;
} }
rc = SendReceive2(xid, ses, iov, n_iov, &resp_buftype, flags, &rsp_iov); rc = smb2_send_recv(xid, ses, iov, n_iov, &resp_buftype, flags,
&rsp_iov);
cifs_small_buf_release(req); cifs_small_buf_release(req);
rsp = (struct smb2_create_rsp *)rsp_iov.iov_base; rsp = (struct smb2_create_rsp *)rsp_iov.iov_base;

2
fs/cifs/smb2pdu.h
View file

@ -496,7 +496,7 @@ struct smb2_tree_disconnect_rsp {
#define SVHDX_OPEN_DEVICE_CONTEXT 0x83CE6F1AD851E0986E34401CC9BCFCE9 #define SVHDX_OPEN_DEVICE_CONTEXT 0x83CE6F1AD851E0986E34401CC9BCFCE9
struct smb2_create_req { struct smb2_create_req {
struct smb2_hdr hdr; struct smb2_sync_hdr sync_hdr;
__le16 StructureSize; /* Must be 57 */ __le16 StructureSize; /* Must be 57 */
__u8 SecurityFlags; __u8 SecurityFlags;
__u8 RequestedOplockLevel; __u8 RequestedOplockLevel;