diff options
Diffstat (limited to 'fs/cifs')
| -rw-r--r-- | fs/cifs/smb2ops.c | 67 | ||||
| -rw-r--r-- | fs/cifs/smb2pdu.h | 19 |
2 files changed, 73 insertions, 13 deletions
diff --git a/fs/cifs/smb2ops.c b/fs/cifs/smb2ops.c index 0215e60267e2..a9256bd374f8 100644 --- a/fs/cifs/smb2ops.c +++ b/fs/cifs/smb2ops.c @@ -714,6 +714,19 @@ smb21_is_read_op(__u32 oplock) !(oplock & SMB2_LEASE_WRITE_CACHING_HE); } +static __le32 +map_oplock_to_lease(u8 oplock) +{ + if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE) + return SMB2_LEASE_WRITE_CACHING | SMB2_LEASE_READ_CACHING; + else if (oplock == SMB2_OPLOCK_LEVEL_II) + return SMB2_LEASE_READ_CACHING; + else if (oplock == SMB2_OPLOCK_LEVEL_BATCH) + return SMB2_LEASE_HANDLE_CACHING | SMB2_LEASE_READ_CACHING | + SMB2_LEASE_WRITE_CACHING; + return 0; +} + static char * smb2_create_lease_buf(u8 *lease_key, u8 oplock) { @@ -725,15 +738,7 @@ smb2_create_lease_buf(u8 *lease_key, u8 oplock) buf->lcontext.LeaseKeyLow = cpu_to_le64(*((u64 *)lease_key)); buf->lcontext.LeaseKeyHigh = cpu_to_le64(*((u64 *)(lease_key + 8))); - if (oplock == SMB2_OPLOCK_LEVEL_EXCLUSIVE) - buf->lcontext.LeaseState = SMB2_LEASE_WRITE_CACHING | - SMB2_LEASE_READ_CACHING; - else if (oplock == SMB2_OPLOCK_LEVEL_II) - buf->lcontext.LeaseState = SMB2_LEASE_READ_CACHING; - else if (oplock == SMB2_OPLOCK_LEVEL_BATCH) - buf->lcontext.LeaseState = SMB2_LEASE_HANDLE_CACHING | - SMB2_LEASE_READ_CACHING | - SMB2_LEASE_WRITE_CACHING; + buf->lcontext.LeaseState = map_oplock_to_lease(oplock); buf->ccontext.DataOffset = cpu_to_le16(offsetof (struct create_lease, lcontext)); @@ -748,6 +753,32 @@ smb2_create_lease_buf(u8 *lease_key, u8 oplock) return (char *)buf; } +static char * +smb3_create_lease_buf(u8 *lease_key, u8 oplock) +{ + struct create_lease_v2 *buf; + + buf = kzalloc(sizeof(struct create_lease_v2), GFP_KERNEL); + if (!buf) + return NULL; + + buf->lcontext.LeaseKeyLow = cpu_to_le64(*((u64 *)lease_key)); + buf->lcontext.LeaseKeyHigh = cpu_to_le64(*((u64 *)(lease_key + 8))); + buf->lcontext.LeaseState = map_oplock_to_lease(oplock); + + buf->ccontext.DataOffset = cpu_to_le16(offsetof + (struct create_lease_v2, lcontext)); + buf->ccontext.DataLength = cpu_to_le32(sizeof(struct lease_context_v2)); + buf->ccontext.NameOffset = cpu_to_le16(offsetof + (struct create_lease_v2, Name)); + buf->ccontext.NameLength = cpu_to_le16(4); + buf->Name[0] = 'R'; + buf->Name[1] = 'q'; + buf->Name[2] = 'L'; + buf->Name[3] = 's'; + return (char *)buf; +} + static __u8 smb2_parse_lease_buf(void *buf) { @@ -758,6 +789,16 @@ smb2_parse_lease_buf(void *buf) return le32_to_cpu(lc->lcontext.LeaseState); } +static __u8 +smb3_parse_lease_buf(void *buf) +{ + struct create_lease_v2 *lc = (struct create_lease_v2 *)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, @@ -969,8 +1010,8 @@ struct smb_version_operations smb30_operations = { .calc_signature = smb3_calc_signature, .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, + .create_lease_buf = smb3_create_lease_buf, + .parse_lease_buf = smb3_parse_lease_buf, }; struct smb_version_values smb20_values = { @@ -1030,7 +1071,7 @@ struct smb_version_values smb30_values = { .cap_large_files = SMB2_LARGE_FILES, .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED, .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED, - .create_lease_size = sizeof(struct create_lease), + .create_lease_size = sizeof(struct create_lease_v2), }; struct smb_version_values smb302_values = { @@ -1050,5 +1091,5 @@ struct smb_version_values smb302_values = { .cap_large_files = SMB2_LARGE_FILES, .signing_enabled = SMB2_NEGOTIATE_SIGNING_ENABLED | SMB2_NEGOTIATE_SIGNING_REQUIRED, .signing_required = SMB2_NEGOTIATE_SIGNING_REQUIRED, - .create_lease_size = sizeof(struct create_lease), + .create_lease_size = sizeof(struct create_lease_v2), }; diff --git a/fs/cifs/smb2pdu.h b/fs/cifs/smb2pdu.h index a2ec65ae626c..b83d0118a757 100644 --- a/fs/cifs/smb2pdu.h +++ b/fs/cifs/smb2pdu.h @@ -497,12 +497,31 @@ struct lease_context { __le64 LeaseDuration; } __packed; +struct lease_context_v2 { + __le64 LeaseKeyLow; + __le64 LeaseKeyHigh; + __le32 LeaseState; + __le32 LeaseFlags; + __le64 LeaseDuration; + __le64 ParentLeaseKeyLow; + __le64 ParentLeaseKeyHigh; + __le16 Epoch; + __le16 Reserved; +} __packed; + struct create_lease { struct create_context ccontext; __u8 Name[8]; struct lease_context lcontext; } __packed; +struct create_lease_v2 { + struct create_context ccontext; + __u8 Name[8]; + struct lease_context_v2 lcontext; + __u8 Pad[4]; +} __packed; + struct create_durable { struct create_context ccontext; __u8 Name[8]; |