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cifs: Simplify SMB2_open_init()

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We can point to the create contexts in just one place, we don't have
to do this in every add_*_context routine.

Signed-off-by: Volker Lendecke <vl@samba.org>
Reviewed-by: Enzo Matsumiya <ematsumiya@suse.de>
Signed-off-by: Steve French <stfrench@microsoft.com>
This commit is contained in:
Volker Lendecke 2023-03-30 12:04:45 +00:00 committed by Steve French
parent 457391b038
commit 5ec629e037
1 changed files with 13 additions and 32 deletions
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45
fs/cifs/smb2pdu.c
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@ -830,10 +830,6 @@ add_posix_context(struct kvec *iov, unsigned int *num_iovec, umode_t mode)
if (iov[num].iov_base == NULL)
return -ENOMEM;
iov[num].iov_len = sizeof(struct create_posix);
if (!req->CreateContextsOffset)
req->CreateContextsOffset = cpu_to_le32(
sizeof(struct smb2_create_req) +
iov[num - 1].iov_len);
le32_add_cpu(&req->CreateContextsLength, sizeof(struct create_posix));
*num_iovec = num + 1;
return 0;
@ -2183,10 +2179,6 @@ add_lease_context(struct TCP_Server_Info *server, struct kvec *iov,
return -ENOMEM;
iov[num].iov_len = server->vals->create_lease_size;
req->RequestedOplockLevel = SMB2_OPLOCK_LEVEL_LEASE;
if (!req->CreateContextsOffset)
req->CreateContextsOffset = cpu_to_le32(
sizeof(struct smb2_create_req) +
iov[num - 1].iov_len);
le32_add_cpu(&req->CreateContextsLength,
server->vals->create_lease_size);
*num_iovec = num + 1;
@ -2274,10 +2266,6 @@ add_durable_v2_context(struct kvec *iov, unsigned int *num_iovec,
if (iov[num].iov_base == NULL)
return -ENOMEM;
iov[num].iov_len = sizeof(struct create_durable_v2);
if (!req->CreateContextsOffset)
req->CreateContextsOffset =
cpu_to_le32(sizeof(struct smb2_create_req) +
iov[1].iov_len);
le32_add_cpu(&req->CreateContextsLength, sizeof(struct create_durable_v2));
*num_iovec = num + 1;
return 0;
@ -2297,10 +2285,6 @@ add_durable_reconnect_v2_context(struct kvec *iov, unsigned int *num_iovec,
if (iov[num].iov_base == NULL)
return -ENOMEM;
iov[num].iov_len = sizeof(struct create_durable_handle_reconnect_v2);
if (!req->CreateContextsOffset)
req->CreateContextsOffset =
cpu_to_le32(sizeof(struct smb2_create_req) +
iov[1].iov_len);
le32_add_cpu(&req->CreateContextsLength,
sizeof(struct create_durable_handle_reconnect_v2));
*num_iovec = num + 1;
@ -2331,10 +2315,6 @@ add_durable_context(struct kvec *iov, unsigned int *num_iovec,
if (iov[num].iov_base == NULL)
return -ENOMEM;
iov[num].iov_len = sizeof(struct create_durable);
if (!req->CreateContextsOffset)
req->CreateContextsOffset =
cpu_to_le32(sizeof(struct smb2_create_req) +
iov[1].iov_len);
le32_add_cpu(&req->CreateContextsLength, sizeof(struct create_durable));
*num_iovec = num + 1;
return 0;
@ -2376,10 +2356,6 @@ add_twarp_context(struct kvec *iov, unsigned int *num_iovec, __u64 timewarp)
if (iov[num].iov_base == NULL)
return -ENOMEM;
iov[num].iov_len = sizeof(struct crt_twarp_ctxt);
if (!req->CreateContextsOffset)
req->CreateContextsOffset = cpu_to_le32(
sizeof(struct smb2_create_req) +
iov[num - 1].iov_len);
le32_add_cpu(&req->CreateContextsLength, sizeof(struct crt_twarp_ctxt));
*num_iovec = num + 1;
return 0;
@ -2511,10 +2487,6 @@ add_sd_context(struct kvec *iov, unsigned int *num_iovec, umode_t mode, bool set
if (iov[num].iov_base == NULL)
return -ENOMEM;
iov[num].iov_len = len;
if (!req->CreateContextsOffset)
req->CreateContextsOffset = cpu_to_le32(
sizeof(struct smb2_create_req) +
iov[num - 1].iov_len);
le32_add_cpu(&req->CreateContextsLength, len);
*num_iovec = num + 1;
return 0;
@ -2553,10 +2525,6 @@ add_query_id_context(struct kvec *iov, unsigned int *num_iovec)
if (iov[num].iov_base == NULL)
return -ENOMEM;
iov[num].iov_len = sizeof(struct crt_query_id_ctxt);
if (!req->CreateContextsOffset)
req->CreateContextsOffset = cpu_to_le32(
sizeof(struct smb2_create_req) +
iov[num - 1].iov_len);
le32_add_cpu(&req->CreateContextsLength, sizeof(struct crt_query_id_ctxt));
*num_iovec = num + 1;
return 0;
@ -2720,6 +2688,9 @@ int smb311_posix_mkdir(const unsigned int xid, struct inode *inode,
rc = add_posix_context(iov, &n_iov, mode);
if (rc)
goto err_free_req;
req->CreateContextsOffset = cpu_to_le32(
sizeof(struct smb2_create_req) +
iov[1].iov_len);
pc_buf = iov[n_iov-1].iov_base;
}
@ -2943,6 +2914,16 @@ SMB2_open_init(struct cifs_tcon *tcon, struct TCP_Server_Info *server,
}
add_query_id_context(iov, &n_iov);
if (n_iov > 2) {
/*
* We have create contexts behind iov[1] (the file
* name), point at them from the main create request
*/
req->CreateContextsOffset = cpu_to_le32(
sizeof(struct smb2_create_req) +
iov[1].iov_len);
}
rqst->rq_nvec = n_iov;
return 0;
}