diff options
| -rw-r--r-- | fs/cifs/cifsglob.h | 2 | ||||
| -rw-r--r-- | fs/cifs/smb2ops.c | 13 | ||||
| -rw-r--r-- | fs/cifs/smb2pdu.c | 27 |
3 files changed, 25 insertions, 17 deletions
diff --git a/fs/cifs/cifsglob.h b/fs/cifs/cifsglob.h index cb53e24ae9b2..38118938f0b6 100644 --- a/fs/cifs/cifsglob.h +++ b/fs/cifs/cifsglob.h @@ -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 { diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c index ecff4d6e4b16..0215e60267e2 100644 --- a/fs/cifs/smb2ops.c +++ b/fs/cifs/smb2ops.c @@ -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 = { diff --git a/fs/cifs/smb2pdu.c b/fs/cifs/smb2pdu.c index f5f1f5341f04..6eef8b67e709 100644 --- a/fs/cifs/smb2pdu.c +++ b/fs/cifs/smb2pdu.c @@ -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: |