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cifs: create helpers for SMB2_set_info_init/free()

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so that we can use these later for compounded set-info calls.

Signed-off-by: Ronnie Sahlberg <lsahlber@redhat.com>
Signed-off-by: Steve French <stfrench@microsoft.com>
This commit is contained in:
Ronnie Sahlberg 2018-09-03 13:33:44 +10:00 committed by Steve French
parent 47dd9597df
commit ba8ca11685
3 changed files with 68 additions and 40 deletions
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2
fs/cifs/smb2inode.c
View File

@ -223,7 +223,7 @@ smb2_open_op_close(const unsigned int xid, struct cifs_tcon *tcon,
(__le64 *)data, false);
break;
case SMB2_OP_SET_INFO:
tmprc = SMB2_set_info(xid, tcon, fid.persistent_fid,
tmprc = SMB2_set_basic_info(xid, tcon, fid.persistent_fid,
fid.volatile_fid,
(FILE_BASIC_INFO *)data);
break;

89
fs/cifs/smb2pdu.c
View File

@ -3754,45 +3754,22 @@ qdir_exit:
return rc;
}
static int
send_set_info(const unsigned int xid, struct cifs_tcon *tcon,
int
SMB2_set_info_init(struct cifs_tcon *tcon, struct smb_rqst *rqst,
u64 persistent_fid, u64 volatile_fid, u32 pid, u8 info_class,
u8 info_type, u32 additional_info, unsigned int num,
u8 info_type, u32 additional_info,
void **data, unsigned int *size)
{
struct smb_rqst rqst;
struct smb2_set_info_req *req;
struct smb2_set_info_rsp *rsp = NULL;
struct kvec *iov;
struct kvec rsp_iov;
int rc = 0;
int resp_buftype;
unsigned int i;
struct cifs_ses *ses = tcon->ses;
int flags = 0;
unsigned int total_len;
if (!ses || !(ses->server))
return -EIO;
if (!num)
return -EINVAL;
iov = kmalloc_array(num, sizeof(struct kvec), GFP_KERNEL);
if (!iov)
return -ENOMEM;
struct kvec *iov = rqst->rq_iov;
unsigned int i, total_len;
int rc;
rc = smb2_plain_req_init(SMB2_SET_INFO, tcon, (void **) &req, &total_len);
if (rc) {
kfree(iov);
if (rc)
return rc;
}
if (smb3_encryption_required(tcon))
flags |= CIFS_TRANSFORM_REQ;
req->sync_hdr.ProcessId = cpu_to_le32(pid);
req->InfoType = info_type;
req->FileInfoClass = info_class;
req->PersistentFileId = persistent_fid;
@ -3810,19 +3787,65 @@ send_set_info(const unsigned int xid, struct cifs_tcon *tcon,
/* 1 for Buffer */
iov[0].iov_len = total_len - 1;
for (i = 1; i < num; i++) {
for (i = 1; i < rqst->rq_nvec; i++) {
le32_add_cpu(&req->BufferLength, size[i]);
iov[i].iov_base = (char *)data[i];
iov[i].iov_len = size[i];
}
return 0;
}
void
SMB2_set_info_free(struct smb_rqst *rqst)
{
cifs_buf_release(rqst->rq_iov[0].iov_base); /* request */
}
static int
send_set_info(const unsigned int xid, struct cifs_tcon *tcon,
u64 persistent_fid, u64 volatile_fid, u32 pid, u8 info_class,
u8 info_type, u32 additional_info, unsigned int num,
void **data, unsigned int *size)
{
struct smb_rqst rqst;
struct smb2_set_info_rsp *rsp = NULL;
struct kvec *iov;
struct kvec rsp_iov;
int rc = 0;
int resp_buftype;
struct cifs_ses *ses = tcon->ses;
int flags = 0;
if (!ses || !(ses->server))
return -EIO;
if (!num)
return -EINVAL;
if (smb3_encryption_required(tcon))
flags |= CIFS_TRANSFORM_REQ;
iov = kmalloc_array(num, sizeof(struct kvec), GFP_KERNEL);
if (!iov)
return -ENOMEM;
memset(&rqst, 0, sizeof(struct smb_rqst));
rqst.rq_iov = iov;
rqst.rq_nvec = num;
rc = SMB2_set_info_init(tcon, &rqst, persistent_fid, volatile_fid, pid,
info_class, info_type, additional_info,
data, size);
if (rc) {
kfree(iov);
return rc;
}
rc = cifs_send_recv(xid, ses, &rqst, &resp_buftype, flags,
&rsp_iov);
cifs_buf_release(req);
SMB2_set_info_free(&rqst);
rsp = (struct smb2_set_info_rsp *)rsp_iov.iov_base;
if (rc != 0) {
@ -3940,7 +3963,7 @@ SMB2_set_eof(const unsigned int xid, struct cifs_tcon *tcon, u64 persistent_fid,
}
int
SMB2_set_info(const unsigned int xid, struct cifs_tcon *tcon,
SMB2_set_basic_info(const unsigned int xid, struct cifs_tcon *tcon,
u64 persistent_fid, u64 volatile_fid, FILE_BASIC_INFO *buf)
{
unsigned int size;

7
fs/cifs/smb2proto.h
View File

@ -193,7 +193,12 @@ extern int SMB2_set_hardlink(const unsigned int xid, struct cifs_tcon *tcon,
extern int SMB2_set_eof(const unsigned int xid, struct cifs_tcon *tcon,
u64 persistent_fid, u64 volatile_fid, u32 pid,
__le64 *eof, bool is_fallocate);
extern int SMB2_set_info(const unsigned int xid, struct cifs_tcon *tcon,
extern int SMB2_set_info_init(struct cifs_tcon *tcon, struct smb_rqst *rqst,
u64 persistent_fid, u64 volatile_fid, u32 pid,
u8 info_class, u8 info_type, u32 additional_info,
void **data, unsigned int *size);
extern void SMB2_set_info_free(struct smb_rqst *rqst);
extern int SMB2_set_basic_info(const unsigned int xid, struct cifs_tcon *tcon,
u64 persistent_fid, u64 volatile_fid,
FILE_BASIC_INFO *buf);
extern int SMB2_set_acl(const unsigned int xid, struct cifs_tcon *tcon,