diff options
| author |   Zhang Xiaoxu <zhangxiaoxu5@huawei.com> | 2022-08-23 20:52:02 +0800 |
|---|---|---|
| committer |   Steve French <stfrench@microsoft.com> | 2022-08-24 22:30:09 -0500 |
| commit | d291e703f420d5f8f999fe54f360d54d213bddb4 (patch) | |
| tree | 12bac3fe7ea04b16c037e77d1b003c2922162fea /fs/cifs | |
| parent | cifs: Use help macro to get the mid header size (diff) | |
| download | linux-dev-d291e703f420d5f8f999fe54f360d54d213bddb4.tar.xz linux-dev-d291e703f420d5f8f999fe54f360d54d213bddb4.zip | |
cifs: Add helper function to check smb1+ server
SMB1 server's header_preamble_size is not 0, add use is_smb1 function
to simplify the code, no actual functional changes.
Reviewed-by: Paulo Alcantara (SUSE) <pc@cjr.nz>
Signed-off-by: Zhang Xiaoxu <zhangxiaoxu5@huawei.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
Diffstat (limited to 'fs/cifs')
| -rw-r--r-- | fs/cifs/cifsencrypt.c | 3 | ||||
| -rw-r--r-- | fs/cifs/cifsglob.h | 5 | ||||
| -rw-r--r-- | fs/cifs/connect.c | 10 | ||||
| -rw-r--r-- | fs/cifs/transport.c | 4 |
4 files changed, 13 insertions, 9 deletions
diff --git a/fs/cifs/cifsencrypt.c b/fs/cifs/cifsencrypt.c index 61a9fed56548..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; - bool is_smb2 = HEADER_PREAMBLE_SIZE(server) == 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 6c8293314530..ae7f571a7dba 100644 --- a/fs/cifs/cifsglob.h +++ b/fs/cifs/cifsglob.h @@ -752,6 +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 0123f41c26f5..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 (HEADER_PREAMBLE_SIZE(server)) + if (is_smb1(server)) return 0; return le16_to_cpu(shdr->CreditRequest); @@ -1121,7 +1121,7 @@ smb2_add_credits_from_hdr(char *buffer, struct TCP_Server_Info *server) /* * SMB1 does not use credits. */ - if (HEADER_PREAMBLE_SIZE(server)) + if (is_smb1(server)) return; if (shdr->CreditRequest) { @@ -1179,10 +1179,10 @@ cifs_demultiplex_thread(void *p) if (length < 0) continue; - if (HEADER_PREAMBLE_SIZE(server) == 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, diff --git a/fs/cifs/transport.c b/fs/cifs/transport.c index bb1052dbac5b..c2fe035e573b 100644 --- a/fs/cifs/transport.c +++ b/fs/cifs/transport.c @@ -261,7 +261,7 @@ smb_rqst_len(struct TCP_Server_Info *server, struct smb_rqst *rqst) int nvec; unsigned long buflen = 0; - if (HEADER_PREAMBLE_SIZE(server) == 0 && rqst->rq_nvec >= 2 && + 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; @@ -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 (HEADER_PREAMBLE_SIZE(server) == 0) { + if (!is_smb1(server)) { struct kvec hiov = { .iov_base = &rfc1002_marker, .iov_len = 4 |