From 5ec629e037ac5872139ebcac0c6af7d8675bbe6b Mon Sep 17 00:00:00 2001 From: Volker Lendecke Date: Thu, 30 Mar 2023 12:04:45 +0000 Subject: cifs: Simplify SMB2_open_init() 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 Reviewed-by: Enzo Matsumiya Signed-off-by: Steve French --- fs/cifs/smb2pdu.c | 45 +++++++++++++-------------------------------- 1 file changed, 13 insertions(+), 32 deletions(-) (limited to 'fs/cifs') diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c index 366f0c3b799b..4f0d7c4bdb98 100644 --- a/fs/cifs/smb2pdu.c +++ b/fs/cifs/smb2pdu.c @@ -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; } -- cgit