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CIFS: Move parsing lease buffer to ops struct

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Signed-off-by: Pavel Shilovsky <pshilovsky@samba.org>
Signed-off-by: Steve French <smfrench@gmail.com>
This commit is contained in:
Pavel Shilovsky 2013-09-05 20:16:45 +04:00 committed by Steve French
parent a41a28bda9
commit b5c7cde3fa
3 changed files with 25 additions and 17 deletions
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2
fs/cifs/cifsglob.h
View File

@ -376,6 +376,8 @@ struct smb_version_operations {
void (*set_oplock_level)(struct cifsInodeInfo *, __u32);
/* create lease context buffer for CREATE request */
char * (*create_lease_buf)(u8 *, u8);
/* parse lease context buffer and return oplock info */
__u8 (*parse_lease_buf)(void *);
};
struct smb_version_values {

13
fs/cifs/smb2ops.c
View File

@ -748,6 +748,16 @@ smb2_create_lease_buf(u8 *lease_key, u8 oplock)
return (char *)buf;
}
static __u8
smb2_parse_lease_buf(void *buf)
{
struct create_lease *lc = (struct create_lease *)buf;
if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
return SMB2_OPLOCK_LEVEL_NOCHANGE;
return le32_to_cpu(lc->lcontext.LeaseState);
}
struct smb_version_operations smb20_operations = {
.compare_fids = smb2_compare_fids,
.setup_request = smb2_setup_request,
@ -816,6 +826,7 @@ struct smb_version_operations smb20_operations = {
.is_read_op = smb2_is_read_op,
.set_oplock_level = smb2_set_oplock_level,
.create_lease_buf = smb2_create_lease_buf,
.parse_lease_buf = smb2_parse_lease_buf,
};
struct smb_version_operations smb21_operations = {
@ -886,6 +897,7 @@ struct smb_version_operations smb21_operations = {
.is_read_op = smb21_is_read_op,
.set_oplock_level = smb21_set_oplock_level,
.create_lease_buf = smb2_create_lease_buf,
.parse_lease_buf = smb2_parse_lease_buf,
};
struct smb_version_operations smb30_operations = {
@ -958,6 +970,7 @@ struct smb_version_operations smb30_operations = {
.is_read_op = smb21_is_read_op,
.set_oplock_level = smb21_set_oplock_level,
.create_lease_buf = smb2_create_lease_buf,
.parse_lease_buf = smb2_parse_lease_buf,
};
struct smb_version_values smb20_values = {

27
fs/cifs/smb2pdu.c
View File

@ -903,34 +903,27 @@ create_reconnect_durable_buf(struct cifs_fid *fid)
}
static __u8
parse_lease_state(struct smb2_create_rsp *rsp)
parse_lease_state(struct TCP_Server_Info *server, struct smb2_create_rsp *rsp)
{
char *data_offset;
struct create_lease *lc;
bool found = false;
struct create_context *cc;
unsigned int next = 0;
char *name;
data_offset = (char *)rsp + 4 + le32_to_cpu(rsp->CreateContextsOffset);
lc = (struct create_lease *)data_offset;
cc = (struct create_context *)data_offset;
do {
lc = (struct create_lease *)((char *)lc + next);
name = le16_to_cpu(lc->ccontext.NameOffset) + (char *)lc;
if (le16_to_cpu(lc->ccontext.NameLength) != 4 ||
cc = (struct create_context *)((char *)cc + next);
name = le16_to_cpu(cc->NameOffset) + (char *)cc;
if (le16_to_cpu(cc->NameLength) != 4 ||
strncmp(name, "RqLs", 4)) {
next = le32_to_cpu(lc->ccontext.Next);
next = le32_to_cpu(cc->Next);
continue;
}
if (lc->lcontext.LeaseFlags & SMB2_LEASE_FLAG_BREAK_IN_PROGRESS)
return SMB2_OPLOCK_LEVEL_NOCHANGE;
found = true;
break;
return server->ops->parse_lease_buf(cc);
} while (next != 0);
if (!found)
return 0;
return le32_to_cpu(lc->lcontext.LeaseState);
return 0;
}
static int
@ -1109,7 +1102,7 @@ SMB2_open(const unsigned int xid, struct cifs_open_parms *oparms, __le16 *path,
}
if (rsp->OplockLevel == SMB2_OPLOCK_LEVEL_LEASE)
*oplock = parse_lease_state(rsp);
*oplock = parse_lease_state(server, rsp);
else
*oplock = rsp->OplockLevel;
creat_exit: