Adding upstream version 6.1.76.upstream/6.1.76

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 468 insertions, 0 deletions

diff --git a/fs/smb/server/smb_common.h b/fs/smb/server/smb_common.h
new file mode 100644
index 000000000..f1092519c
--- /dev/null
+++ b/fs/smb/server/smb_common.h
@@ -0,0 +1,468 @@
+/* SPDX-License-Identifier: GPL-2.0-or-later */
+/*
+ *   Copyright (C) 2018 Samsung Electronics Co., Ltd.
+ */
+
+#ifndef __SMB_COMMON_H__
+#define __SMB_COMMON_H__
+
+#include <linux/kernel.h>
+
+#include "glob.h"
+#include "nterr.h"
+#include "../common/smb2pdu.h"
+#include "smb2pdu.h"
+
+/* ksmbd's Specific ERRNO */
+#define ESHARE			50000
+
+#define SMB1_PROT		0
+#define SMB2_PROT		1
+#define SMB21_PROT		2
+/* multi-protocol negotiate request */
+#define SMB2X_PROT		3
+#define SMB30_PROT		4
+#define SMB302_PROT		5
+#define SMB311_PROT		6
+#define BAD_PROT		0xFFFF
+
+#define SMB1_VERSION_STRING	"1.0"
+#define SMB20_VERSION_STRING	"2.0"
+#define SMB21_VERSION_STRING	"2.1"
+#define SMB30_VERSION_STRING	"3.0"
+#define SMB302_VERSION_STRING	"3.02"
+#define SMB311_VERSION_STRING	"3.1.1"
+
+#define SMB_ECHO_INTERVAL	(60 * HZ)
+
+#define CIFS_DEFAULT_IOSIZE	(64 * 1024)
+#define MAX_CIFS_SMALL_BUFFER_SIZE 448 /* big enough for most */
+
+#define MAX_STREAM_PROT_LEN	0x00FFFFFF
+
+/* Responses when opening a file. */
+#define F_SUPERSEDED	0
+#define F_OPENED	1
+#define F_CREATED	2
+#define F_OVERWRITTEN	3
+
+/*
+ * File Attribute flags
+ */
+#define ATTR_POSIX_SEMANTICS		0x01000000
+#define ATTR_BACKUP_SEMANTICS		0x02000000
+#define ATTR_DELETE_ON_CLOSE		0x04000000
+#define ATTR_SEQUENTIAL_SCAN		0x08000000
+#define ATTR_RANDOM_ACCESS		0x10000000
+#define ATTR_NO_BUFFERING		0x20000000
+#define ATTR_WRITE_THROUGH		0x80000000
+
+/* List of FileSystemAttributes - see 2.5.1 of MS-FSCC */
+#define FILE_SUPPORTS_SPARSE_VDL	0x10000000 /* faster nonsparse extend */
+#define FILE_SUPPORTS_BLOCK_REFCOUNTING	0x08000000 /* allow ioctl dup extents */
+#define FILE_SUPPORT_INTEGRITY_STREAMS	0x04000000
+#define FILE_SUPPORTS_USN_JOURNAL	0x02000000
+#define FILE_SUPPORTS_OPEN_BY_FILE_ID	0x01000000
+#define FILE_SUPPORTS_EXTENDED_ATTRIBUTES 0x00800000
+#define FILE_SUPPORTS_HARD_LINKS	0x00400000
+#define FILE_SUPPORTS_TRANSACTIONS	0x00200000
+#define FILE_SEQUENTIAL_WRITE_ONCE	0x00100000
+#define FILE_READ_ONLY_VOLUME		0x00080000
+#define FILE_NAMED_STREAMS		0x00040000
+#define FILE_SUPPORTS_ENCRYPTION	0x00020000
+#define FILE_SUPPORTS_OBJECT_IDS	0x00010000
+#define FILE_VOLUME_IS_COMPRESSED	0x00008000
+#define FILE_SUPPORTS_REMOTE_STORAGE	0x00000100
+#define FILE_SUPPORTS_REPARSE_POINTS	0x00000080
+#define FILE_SUPPORTS_SPARSE_FILES	0x00000040
+#define FILE_VOLUME_QUOTAS		0x00000020
+#define FILE_FILE_COMPRESSION		0x00000010
+#define FILE_PERSISTENT_ACLS		0x00000008
+#define FILE_UNICODE_ON_DISK		0x00000004
+#define FILE_CASE_PRESERVED_NAMES	0x00000002
+#define FILE_CASE_SENSITIVE_SEARCH	0x00000001
+
+#define FILE_READ_DATA        0x00000001  /* Data can be read from the file   */
+#define FILE_WRITE_DATA       0x00000002  /* Data can be written to the file  */
+#define FILE_APPEND_DATA      0x00000004  /* Data can be appended to the file */
+#define FILE_READ_EA          0x00000008  /* Extended attributes associated   */
+/* with the file can be read        */
+#define FILE_WRITE_EA         0x00000010  /* Extended attributes associated   */
+/* with the file can be written     */
+#define FILE_EXECUTE          0x00000020  /*Data can be read into memory from */
+/* the file using system paging I/O */
+#define FILE_DELETE_CHILD     0x00000040
+#define FILE_READ_ATTRIBUTES  0x00000080  /* Attributes associated with the   */
+/* file can be read                 */
+#define FILE_WRITE_ATTRIBUTES 0x00000100  /* Attributes associated with the   */
+/* file can be written              */
+#define DELETE                0x00010000  /* The file can be deleted          */
+#define READ_CONTROL          0x00020000  /* The access control list and      */
+/* ownership associated with the    */
+/* file can be read                 */
+#define WRITE_DAC             0x00040000  /* The access control list and      */
+/* ownership associated with the    */
+/* file can be written.             */
+#define WRITE_OWNER           0x00080000  /* Ownership information associated */
+/* with the file can be written     */
+#define SYNCHRONIZE           0x00100000  /* The file handle can waited on to */
+/* synchronize with the completion  */
+/* of an input/output request       */
+#define GENERIC_ALL           0x10000000
+#define GENERIC_EXECUTE       0x20000000
+#define GENERIC_WRITE         0x40000000
+#define GENERIC_READ          0x80000000
+/* In summary - Relevant file       */
+/* access flags from CIFS are       */
+/* file_read_data, file_write_data  */
+/* file_execute, file_read_attributes*/
+/* write_dac, and delete.           */
+
+#define SET_FILE_READ_RIGHTS (FILE_READ_DATA | FILE_READ_EA \
+		| FILE_READ_ATTRIBUTES \
+		| DELETE | READ_CONTROL | WRITE_DAC \
+		| WRITE_OWNER | SYNCHRONIZE)
+#define SET_FILE_WRITE_RIGHTS (FILE_WRITE_DATA | FILE_APPEND_DATA \
+		| FILE_WRITE_EA \
+		| FILE_DELETE_CHILD \
+		| FILE_WRITE_ATTRIBUTES \
+		| DELETE | READ_CONTROL | WRITE_DAC \
+		| WRITE_OWNER | SYNCHRONIZE)
+#define SET_FILE_EXEC_RIGHTS (FILE_READ_EA | FILE_WRITE_EA | FILE_EXECUTE \
+		| FILE_READ_ATTRIBUTES \
+		| FILE_WRITE_ATTRIBUTES \
+		| DELETE | READ_CONTROL | WRITE_DAC \
+		| WRITE_OWNER | SYNCHRONIZE)
+
+#define SET_MINIMUM_RIGHTS (FILE_READ_EA | FILE_READ_ATTRIBUTES \
+		| READ_CONTROL | SYNCHRONIZE)
+
+/* generic flags for file open */
+#define GENERIC_READ_FLAGS	(READ_CONTROL | FILE_READ_DATA | \
+		FILE_READ_ATTRIBUTES | \
+		FILE_READ_EA | SYNCHRONIZE)
+
+#define GENERIC_WRITE_FLAGS	(READ_CONTROL | FILE_WRITE_DATA | \
+		FILE_WRITE_ATTRIBUTES | FILE_WRITE_EA | \
+		FILE_APPEND_DATA | SYNCHRONIZE)
+
+#define GENERIC_EXECUTE_FLAGS	(READ_CONTROL | FILE_EXECUTE | \
+		FILE_READ_ATTRIBUTES | SYNCHRONIZE)
+
+#define GENERIC_ALL_FLAGS	(DELETE | READ_CONTROL | WRITE_DAC | \
+		WRITE_OWNER | SYNCHRONIZE | FILE_READ_DATA | \
+		FILE_WRITE_DATA | FILE_APPEND_DATA | \
+		FILE_READ_EA | FILE_WRITE_EA | \
+		FILE_EXECUTE | FILE_DELETE_CHILD | \
+		FILE_READ_ATTRIBUTES | FILE_WRITE_ATTRIBUTES)
+
+#define SMB1_PROTO_NUMBER		cpu_to_le32(0x424d53ff)
+#define SMB_COM_NEGOTIATE		0x72
+#define SMB1_CLIENT_GUID_SIZE		(16)
+
+#define SMBFLG_RESPONSE 0x80	/* this PDU is a response from server */
+
+#define SMBFLG2_IS_LONG_NAME	cpu_to_le16(0x40)
+#define SMBFLG2_EXT_SEC		cpu_to_le16(0x800)
+#define SMBFLG2_ERR_STATUS	cpu_to_le16(0x4000)
+#define SMBFLG2_UNICODE		cpu_to_le16(0x8000)
+
+struct smb_hdr {
+	__be32 smb_buf_length;
+	__u8 Protocol[4];
+	__u8 Command;
+	union {
+		struct {
+			__u8 ErrorClass;
+			__u8 Reserved;
+			__le16 Error;
+		} __packed DosError;
+		__le32 CifsError;
+	} __packed Status;
+	__u8 Flags;
+	__le16 Flags2;          /* note: le */
+	__le16 PidHigh;
+	union {
+		struct {
+			__le32 SequenceNumber;  /* le */
+			__u32 Reserved; /* zero */
+		} __packed Sequence;
+		__u8 SecuritySignature[8];      /* le */
+	} __packed Signature;
+	__u8 pad[2];
+	__le16 Tid;
+	__le16 Pid;
+	__le16 Uid;
+	__le16 Mid;
+	__u8 WordCount;
+} __packed;
+
+struct smb_negotiate_req {
+	struct smb_hdr hdr;     /* wct = 0 */
+	__le16 ByteCount;
+	unsigned char DialectsArray[];
+} __packed;
+
+struct smb_negotiate_rsp {
+	struct smb_hdr hdr;     /* wct = 17 */
+	__le16 DialectIndex; /* 0xFFFF = no dialect acceptable */
+	__le16 ByteCount;
+} __packed;
+
+struct filesystem_attribute_info {
+	__le32 Attributes;
+	__le32 MaxPathNameComponentLength;
+	__le32 FileSystemNameLen;
+	__le16 FileSystemName[1]; /* do not have to save this - get subset? */
+} __packed;
+
+struct filesystem_device_info {
+	__le32 DeviceType;
+	__le32 DeviceCharacteristics;
+} __packed; /* device info level 0x104 */
+
+struct filesystem_vol_info {
+	__le64 VolumeCreationTime;
+	__le32 SerialNumber;
+	__le32 VolumeLabelSize;
+	__le16 Reserved;
+	__le16 VolumeLabel[1];
+} __packed;
+
+struct filesystem_info {
+	__le64 TotalAllocationUnits;
+	__le64 FreeAllocationUnits;
+	__le32 SectorsPerAllocationUnit;
+	__le32 BytesPerSector;
+} __packed;     /* size info, level 0x103 */
+
+#define EXTENDED_INFO_MAGIC 0x43667364	/* Cfsd */
+#define STRING_LENGTH 28
+
+struct fs_extended_info {
+	__le32 magic;
+	__le32 version;
+	__le32 release;
+	__u64 rel_date;
+	char    version_string[STRING_LENGTH];
+} __packed;
+
+struct object_id_info {
+	char objid[16];
+	struct fs_extended_info extended_info;
+} __packed;
+
+struct file_directory_info {
+	__le32 NextEntryOffset;
+	__u32 FileIndex;
+	__le64 CreationTime;
+	__le64 LastAccessTime;
+	__le64 LastWriteTime;
+	__le64 ChangeTime;
+	__le64 EndOfFile;
+	__le64 AllocationSize;
+	__le32 ExtFileAttributes;
+	__le32 FileNameLength;
+	char FileName[];
+} __packed;   /* level 0x101 FF resp data */
+
+struct file_names_info {
+	__le32 NextEntryOffset;
+	__u32 FileIndex;
+	__le32 FileNameLength;
+	char FileName[];
+} __packed;   /* level 0xc FF resp data */
+
+struct file_full_directory_info {
+	__le32 NextEntryOffset;
+	__u32 FileIndex;
+	__le64 CreationTime;
+	__le64 LastAccessTime;
+	__le64 LastWriteTime;
+	__le64 ChangeTime;
+	__le64 EndOfFile;
+	__le64 AllocationSize;
+	__le32 ExtFileAttributes;
+	__le32 FileNameLength;
+	__le32 EaSize;
+	char FileName[];
+} __packed; /* level 0x102 FF resp */
+
+struct file_both_directory_info {
+	__le32 NextEntryOffset;
+	__u32 FileIndex;
+	__le64 CreationTime;
+	__le64 LastAccessTime;
+	__le64 LastWriteTime;
+	__le64 ChangeTime;
+	__le64 EndOfFile;
+	__le64 AllocationSize;
+	__le32 ExtFileAttributes;
+	__le32 FileNameLength;
+	__le32 EaSize; /* length of the xattrs */
+	__u8   ShortNameLength;
+	__u8   Reserved;
+	__u8   ShortName[24];
+	char FileName[];
+} __packed; /* level 0x104 FFrsp data */
+
+struct file_id_both_directory_info {
+	__le32 NextEntryOffset;
+	__u32 FileIndex;
+	__le64 CreationTime;
+	__le64 LastAccessTime;
+	__le64 LastWriteTime;
+	__le64 ChangeTime;
+	__le64 EndOfFile;
+	__le64 AllocationSize;
+	__le32 ExtFileAttributes;
+	__le32 FileNameLength;
+	__le32 EaSize; /* length of the xattrs */
+	__u8   ShortNameLength;
+	__u8   Reserved;
+	__u8   ShortName[24];
+	__le16 Reserved2;
+	__le64 UniqueId;
+	char FileName[];
+} __packed;
+
+struct file_id_full_dir_info {
+	__le32 NextEntryOffset;
+	__u32 FileIndex;
+	__le64 CreationTime;
+	__le64 LastAccessTime;
+	__le64 LastWriteTime;
+	__le64 ChangeTime;
+	__le64 EndOfFile;
+	__le64 AllocationSize;
+	__le32 ExtFileAttributes;
+	__le32 FileNameLength;
+	__le32 EaSize; /* EA size */
+	__le32 Reserved;
+	__le64 UniqueId; /* inode num - le since Samba puts ino in low 32 bit*/
+	char FileName[];
+} __packed; /* level 0x105 FF rsp data */
+
+struct smb_version_values {
+	char		*version_string;
+	__u16		protocol_id;
+	__le16		lock_cmd;
+	__u32		capabilities;
+	__u32		max_read_size;
+	__u32		max_write_size;
+	__u32		max_trans_size;
+	__u32		max_credits;
+	__u32		large_lock_type;
+	__u32		exclusive_lock_type;
+	__u32		shared_lock_type;
+	__u32		unlock_lock_type;
+	size_t		header_size;
+	size_t		max_header_size;
+	size_t		read_rsp_size;
+	unsigned int	cap_unix;
+	unsigned int	cap_nt_find;
+	unsigned int	cap_large_files;
+	__u16		signing_enabled;
+	__u16		signing_required;
+	size_t		create_lease_size;
+	size_t		create_durable_size;
+	size_t		create_durable_v2_size;
+	size_t		create_mxac_size;
+	size_t		create_disk_id_size;
+	size_t		create_posix_size;
+};
+
+struct filesystem_posix_info {
+	/* For undefined recommended transfer size return -1 in that field */
+	__le32 OptimalTransferSize;  /* bsize on some os, iosize on other os */
+	__le32 BlockSize;
+	/* The next three fields are in terms of the block size.
+	 * (above). If block size is unknown, 4096 would be a
+	 * reasonable block size for a server to report.
+	 * Note that returning the blocks/blocksavail removes need
+	 * to make a second call (to QFSInfo level 0x103 to get this info.
+	 * UserBlockAvail is typically less than or equal to BlocksAvail,
+	 * if no distinction is made return the same value in each
+	 */
+	__le64 TotalBlocks;
+	__le64 BlocksAvail;       /* bfree */
+	__le64 UserBlocksAvail;   /* bavail */
+	/* For undefined Node fields or FSID return -1 */
+	__le64 TotalFileNodes;
+	__le64 FreeFileNodes;
+	__le64 FileSysIdentifier;   /* fsid */
+	/* NB Namelen comes from FILE_SYSTEM_ATTRIBUTE_INFO call */
+	/* NB flags can come from FILE_SYSTEM_DEVICE_INFO call   */
+} __packed;
+
+struct smb_version_ops {
+	u16 (*get_cmd_val)(struct ksmbd_work *swork);
+	int (*init_rsp_hdr)(struct ksmbd_work *swork);
+	void (*set_rsp_status)(struct ksmbd_work *swork, __le32 err);
+	int (*allocate_rsp_buf)(struct ksmbd_work *work);
+	int (*set_rsp_credits)(struct ksmbd_work *work);
+	int (*check_user_session)(struct ksmbd_work *work);
+	int (*get_ksmbd_tcon)(struct ksmbd_work *work);
+	bool (*is_sign_req)(struct ksmbd_work *work, unsigned int command);
+	int (*check_sign_req)(struct ksmbd_work *work);
+	void (*set_sign_rsp)(struct ksmbd_work *work);
+	int (*generate_signingkey)(struct ksmbd_session *sess, struct ksmbd_conn *conn);
+	int (*generate_encryptionkey)(struct ksmbd_conn *conn, struct ksmbd_session *sess);
+	bool (*is_transform_hdr)(void *buf);
+	int (*decrypt_req)(struct ksmbd_work *work);
+	int (*encrypt_resp)(struct ksmbd_work *work);
+};
+
+struct smb_version_cmds {
+	int (*proc)(struct ksmbd_work *swork);
+};
+
+int ksmbd_min_protocol(void);
+int ksmbd_max_protocol(void);
+
+int ksmbd_lookup_protocol_idx(char *str);
+
+int ksmbd_verify_smb_message(struct ksmbd_work *work);
+bool ksmbd_smb_request(struct ksmbd_conn *conn);
+
+int ksmbd_lookup_dialect_by_id(__le16 *cli_dialects, __le16 dialects_count);
+
+int ksmbd_init_smb_server(struct ksmbd_work *work);
+
+struct ksmbd_kstat;
+int ksmbd_populate_dot_dotdot_entries(struct ksmbd_work *work,
+				      int info_level,
+				      struct ksmbd_file *dir,
+				      struct ksmbd_dir_info *d_info,
+				      char *search_pattern,
+				      int (*fn)(struct ksmbd_conn *,
+						int,
+						struct ksmbd_dir_info *,
+						struct ksmbd_kstat *));
+
+int ksmbd_extract_shortname(struct ksmbd_conn *conn,
+			    const char *longname,
+			    char *shortname);
+
+int ksmbd_smb_negotiate_common(struct ksmbd_work *work, unsigned int command);
+
+int ksmbd_smb_check_shared_mode(struct file *filp, struct ksmbd_file *curr_fp);
+int ksmbd_override_fsids(struct ksmbd_work *work);
+void ksmbd_revert_fsids(struct ksmbd_work *work);
+
+unsigned int ksmbd_server_side_copy_max_chunk_count(void);
+unsigned int ksmbd_server_side_copy_max_chunk_size(void);
+unsigned int ksmbd_server_side_copy_max_total_size(void);
+bool is_asterisk(char *p);
+__le32 smb_map_generic_desired_access(__le32 daccess);
+
+static inline unsigned int get_rfc1002_len(void *buf)
+{
+	return be32_to_cpu(*((__be32 *)buf)) & 0xffffff;
+}
+
+static inline void inc_rfc1001_len(void *buf, int count)
+{
+	be32_add_cpu((__be32 *)buf, count);
+}
+#endif /* __SMB_COMMON_H__ */