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authorRonnie Sahlberg <lsahlber@redhat.com>2018-08-01 09:26:17 +1000
committerSteve French <stfrench@microsoft.com>2018-08-08 18:08:47 -0500
commit296ecbae7fdf209b1e0fb08b8bd82e5e9b637439 (patch)
treed6af9dbd80d21fa2aa8ed4a38e21ba28f6fb0333 /fs/cifs
parent8eb4ecfab03d21146e144b0693ce96839d58202d (diff)
cifs: add SMB2_query_info_[init|free]()
Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com> Signed-off-by: Steve French <stfrench@microsoft.com> Reviewed-by: Pavel Shilovsky <pshilov@microsoft.com> Reviewed-by: Paulo Alcantara <palcantara@suse.com>
Diffstat (limited to 'fs/cifs')
-rw-r--r--fs/cifs/smb2pdu.c68
-rw-r--r--fs/cifs/smb2proto.h5
2 files changed, 51 insertions, 22 deletions
diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c
index 78c7190f2295..821f21d4ada7 100644
--- a/fs/cifs/smb2pdu.c
+++ b/fs/cifs/smb2pdu.c
@@ -2580,36 +2580,22 @@ validate_and_copy_iov(unsigned int offset, unsigned int buffer_length,
return 0;
}
-static int
-query_info(const unsigned int xid, struct cifs_tcon *tcon,
- u64 persistent_fid, u64 volatile_fid, u8 info_class, u8 info_type,
- u32 additional_info, size_t output_len, size_t min_len, void **data,
- u32 *dlen)
+int
+SMB2_query_info_init(struct cifs_tcon *tcon, struct smb_rqst *rqst,
+ u64 persistent_fid, u64 volatile_fid,
+ u8 info_class, u8 info_type, u32 additional_info,
+ size_t output_len)
{
- struct smb_rqst rqst;
struct smb2_query_info_req *req;
- struct smb2_query_info_rsp *rsp = NULL;
- struct kvec iov[2];
- struct kvec rsp_iov;
- int rc = 0;
- int resp_buftype;
- struct cifs_ses *ses = tcon->ses;
- int flags = 0;
+ struct kvec *iov = rqst->rq_iov;
unsigned int total_len;
-
- cifs_dbg(FYI, "Query Info\n");
-
- if (!ses || !(ses->server))
- return -EIO;
+ int rc;
rc = smb2_plain_req_init(SMB2_QUERY_INFO, tcon, (void **) &req,
&total_len);
if (rc)
return rc;
- if (smb3_encryption_required(tcon))
- flags |= CIFS_TRANSFORM_REQ;
-
req->InfoType = info_type;
req->FileInfoClass = info_class;
req->PersistentFileId = persistent_fid;
@@ -2626,13 +2612,50 @@ query_info(const unsigned int xid, struct cifs_tcon *tcon,
iov[0].iov_base = (char *)req;
/* 1 for Buffer */
iov[0].iov_len = total_len - 1;
+ return 0;
+}
+
+void
+SMB2_query_info_free(struct smb_rqst *rqst)
+{
+ cifs_small_buf_release(rqst->rq_iov[0].iov_base); /* request */
+}
+
+static int
+query_info(const unsigned int xid, struct cifs_tcon *tcon,
+ u64 persistent_fid, u64 volatile_fid, u8 info_class, u8 info_type,
+ u32 additional_info, size_t output_len, size_t min_len, void **data,
+ u32 *dlen)
+{
+ struct smb_rqst rqst;
+ struct smb2_query_info_rsp *rsp = NULL;
+ struct kvec iov[1];
+ struct kvec rsp_iov;
+ int rc = 0;
+ int resp_buftype;
+ struct cifs_ses *ses = tcon->ses;
+ int flags = 0;
+
+ cifs_dbg(FYI, "Query Info\n");
+
+ if (!ses || !(ses->server))
+ return -EIO;
+
+ if (smb3_encryption_required(tcon))
+ flags |= CIFS_TRANSFORM_REQ;
memset(&rqst, 0, sizeof(struct smb_rqst));
+ memset(&iov, 0, sizeof(iov));
rqst.rq_iov = iov;
rqst.rq_nvec = 1;
+ rc = SMB2_query_info_init(tcon, &rqst, persistent_fid, volatile_fid,
+ info_class, info_type, additional_info,
+ output_len);
+ if (rc)
+ goto qinf_exit;
+
rc = cifs_send_recv(xid, ses, &rqst, &resp_buftype, flags, &rsp_iov);
- cifs_small_buf_release(req);
rsp = (struct smb2_query_info_rsp *)rsp_iov.iov_base;
if (rc) {
@@ -2661,6 +2684,7 @@ query_info(const unsigned int xid, struct cifs_tcon *tcon,
&rsp_iov, min_len, *data);
qinf_exit:
+ SMB2_query_info_free(&rqst);
free_rsp_buf(resp_buftype, rsp);
return rc;
}
diff --git a/fs/cifs/smb2proto.h b/fs/cifs/smb2proto.h
index fdd8c78648c6..1255cde5133b 100644
--- a/fs/cifs/smb2proto.h
+++ b/fs/cifs/smb2proto.h
@@ -153,6 +153,11 @@ extern int SMB2_query_eas(const unsigned int xid, struct cifs_tcon *tcon,
extern int SMB2_query_info(const unsigned int xid, struct cifs_tcon *tcon,
u64 persistent_file_id, u64 volatile_file_id,
struct smb2_file_all_info *data);
+extern int SMB2_query_info_init(struct cifs_tcon *tcon, struct smb_rqst *rqst,
+ u64 persistent_fid, u64 volatile_fid,
+ u8 info_class, u8 info_type,
+ u32 additional_info, size_t output_len);
+extern void SMB2_query_info_free(struct smb_rqst *rqst);
extern int SMB2_query_acl(const unsigned int xid, struct cifs_tcon *tcon,
u64 persistent_file_id, u64 volatile_file_id,
void **data, unsigned int *plen);