diff options
Diffstat (limited to 'fs/smb/client/cifsproto.h')
| -rw-r--r-- | fs/smb/client/cifsproto.h | 886 |
1 files changed, 886 insertions, 0 deletions
diff --git a/fs/smb/client/cifsproto.h b/fs/smb/client/cifsproto.h new file mode 100644 index 000000000000..f8c0615d4ee4 --- /dev/null +++ b/fs/smb/client/cifsproto.h @@ -0,0 +1,886 @@ +/* SPDX-License-Identifier: LGPL-2.1 */ +/* + * + * Copyright (c) International Business Machines Corp., 2002,2008 + * Author(s): Steve French (sfrench@us.ibm.com) + * + */ +#ifndef _CIFSPROTO_H +#define _CIFSPROTO_H +#include <linux/nls.h> +#include <linux/ctype.h> +#include "cifsglob.h" +#include "trace.h" +#ifdef CONFIG_CIFS_DFS_UPCALL +#include "dfs_cache.h" +#endif + +struct statfs; +struct smb_rqst; +struct smb3_fs_context; + +/* + ***************************************************************** + * All Prototypes + ***************************************************************** + */ + +extern struct smb_hdr *cifs_buf_get(void); +extern void cifs_buf_release(void *); +extern struct smb_hdr *cifs_small_buf_get(void); +extern void cifs_small_buf_release(void *); +extern void free_rsp_buf(int, void *); +extern int smb_send_kvec(struct TCP_Server_Info *server, + struct msghdr *msg, + size_t *sent); +extern unsigned int _get_xid(void); +extern void _free_xid(unsigned int); +#define get_xid() \ +({ \ + unsigned int __xid = _get_xid(); \ + cifs_dbg(FYI, "VFS: in %s as Xid: %u with uid: %d\n", \ + __func__, __xid, \ + from_kuid(&init_user_ns, current_fsuid())); \ + trace_smb3_enter(__xid, __func__); \ + __xid; \ +}) + +#define free_xid(curr_xid) \ +do { \ + _free_xid(curr_xid); \ + cifs_dbg(FYI, "VFS: leaving %s (xid = %u) rc = %d\n", \ + __func__, curr_xid, (int)rc); \ + if (rc) \ + trace_smb3_exit_err(curr_xid, __func__, (int)rc); \ + else \ + trace_smb3_exit_done(curr_xid, __func__); \ +} while (0) +extern int init_cifs_idmap(void); +extern void exit_cifs_idmap(void); +extern int init_cifs_spnego(void); +extern void exit_cifs_spnego(void); +extern const char *build_path_from_dentry(struct dentry *, void *); +char *__build_path_from_dentry_optional_prefix(struct dentry *direntry, void *page, + const char *tree, int tree_len, + bool prefix); +extern char *build_path_from_dentry_optional_prefix(struct dentry *direntry, + void *page, bool prefix); +static inline void *alloc_dentry_path(void) +{ + return __getname(); +} + +static inline void free_dentry_path(void *page) +{ + if (page) + __putname(page); +} + +extern char *cifs_build_path_to_root(struct smb3_fs_context *ctx, + struct cifs_sb_info *cifs_sb, + struct cifs_tcon *tcon, + int add_treename); +char *cifs_build_devname(char *nodename, const char *prepath); +void delete_mid(struct TCP_Server_Info *server, struct mid_q_entry *mid); +void __release_mid(struct TCP_Server_Info *server, struct mid_q_entry *mid); +void cifs_wake_up_task(struct TCP_Server_Info *server, struct mid_q_entry *mid); +extern int cifs_handle_standard(struct TCP_Server_Info *server, + struct mid_q_entry *mid); +extern char *smb3_fs_context_fullpath(const struct smb3_fs_context *ctx, + char dirsep); +extern int smb3_parse_devname(const char *devname, struct smb3_fs_context *ctx); +extern int smb3_parse_opt(const char *options, const char *key, char **val); +extern int cifs_ipaddr_cmp(struct sockaddr *srcaddr, struct sockaddr *rhs); +extern bool cifs_match_ipaddr(struct sockaddr *srcaddr, struct sockaddr *rhs); +extern int cifs_discard_remaining_data(struct TCP_Server_Info *server); +extern int cifs_call_async(struct TCP_Server_Info *server, + struct smb_rqst *rqst, + mid_receive_t receive, mid_callback_t callback, + mid_handle_t handle, void *cbdata, const int flags, + const struct cifs_credits *exist_credits); +extern struct TCP_Server_Info *cifs_pick_channel(struct cifs_ses *ses); +extern int cifs_send_recv(const unsigned int xid, struct cifs_ses *ses, + struct TCP_Server_Info *server, + struct smb_rqst *rqst, int *resp_buf_type, + const int flags, struct kvec *resp_iov); +extern int compound_send_recv(const unsigned int xid, struct cifs_ses *ses, + struct TCP_Server_Info *server, + const int flags, const int num_rqst, + struct smb_rqst *rqst, int *resp_buf_type, + struct kvec *resp_iov); +int SendReceive(const unsigned int xid, struct cifs_ses *ses, + struct smb_hdr *in_buf, unsigned int in_len, + struct smb_hdr *out_buf, int *pbytes_returned, const int flags); +int SendReceiveNoRsp(const unsigned int xid, struct cifs_ses *ses, + char *in_buf, unsigned int in_len, int flags); +int cifs_sync_mid_result(struct mid_q_entry *mid, struct TCP_Server_Info *server); +struct mid_q_entry *cifs_setup_request(struct cifs_ses *ses, struct TCP_Server_Info *ignored, + struct smb_rqst *rqst); +struct mid_q_entry *cifs_setup_async_request(struct TCP_Server_Info *server, + struct smb_rqst *rqst); +int __smb_send_rqst(struct TCP_Server_Info *server, int num_rqst, + struct smb_rqst *rqst); +extern int cifs_check_receive(struct mid_q_entry *mid, + struct TCP_Server_Info *server, bool log_error); +int wait_for_free_request(struct TCP_Server_Info *server, const int flags, + unsigned int *instance); +extern int cifs_wait_mtu_credits(struct TCP_Server_Info *server, + size_t size, size_t *num, + struct cifs_credits *credits); + +static inline int +send_cancel(struct cifs_ses *ses, struct TCP_Server_Info *server, + struct smb_rqst *rqst, struct mid_q_entry *mid, + unsigned int xid) +{ + return server->ops->send_cancel ? + server->ops->send_cancel(ses, server, rqst, mid, xid) : 0; +} + +int wait_for_response(struct TCP_Server_Info *server, struct mid_q_entry *midQ); +extern int SendReceive2(const unsigned int /* xid */ , struct cifs_ses *, + struct kvec *, int /* nvec to send */, + int * /* type of buf returned */, const int flags, + struct kvec * /* resp vec */); + +void smb2_query_server_interfaces(struct work_struct *work); +void +cifs_signal_cifsd_for_reconnect(struct TCP_Server_Info *server, + bool all_channels); +void +cifs_mark_tcp_ses_conns_for_reconnect(struct TCP_Server_Info *server, + bool mark_smb_session); +extern int cifs_reconnect(struct TCP_Server_Info *server, + bool mark_smb_session); +int checkSMB(char *buf, unsigned int pdu_len, unsigned int len, + struct TCP_Server_Info *srvr); +extern bool is_valid_oplock_break(char *, struct TCP_Server_Info *); +extern bool backup_cred(struct cifs_sb_info *); +extern bool is_size_safe_to_change(struct cifsInodeInfo *cifsInode, __u64 eof, + bool from_readdir); +void cifs_write_subrequest_terminated(struct cifs_io_subrequest *wdata, ssize_t result); +extern struct cifsFileInfo *find_writable_file(struct cifsInodeInfo *, int); +extern int cifs_get_writable_file(struct cifsInodeInfo *cifs_inode, + int flags, + struct cifsFileInfo **ret_file); +extern int cifs_get_writable_path(struct cifs_tcon *tcon, const char *name, + int flags, + struct cifsFileInfo **ret_file); +extern struct cifsFileInfo *find_readable_file(struct cifsInodeInfo *, bool); +extern int cifs_get_readable_path(struct cifs_tcon *tcon, const char *name, + struct cifsFileInfo **ret_file); +extern int cifs_get_hardlink_path(struct cifs_tcon *tcon, struct inode *inode, + struct file *file); +extern unsigned int smbCalcSize(void *buf); +extern int decode_negTokenInit(unsigned char *security_blob, int length, + struct TCP_Server_Info *server); +extern int cifs_convert_address(struct sockaddr *dst, const char *src, int len); +extern void cifs_set_port(struct sockaddr *addr, const unsigned short int port); +extern int map_smb_to_linux_error(char *buf, bool logErr); +extern int map_and_check_smb_error(struct TCP_Server_Info *server, + struct mid_q_entry *mid, bool logErr); +unsigned int header_assemble(struct smb_hdr *buffer, char smb_command, + const struct cifs_tcon *treeCon, int word_count + /* length of fixed section word count in two byte units */); +extern int small_smb_init_no_tc(const int smb_cmd, const int wct, + struct cifs_ses *ses, + void **request_buf); +extern int CIFS_SessSetup(const unsigned int xid, struct cifs_ses *ses, + struct TCP_Server_Info *server, + const struct nls_table *nls_cp); +extern struct timespec64 cifs_NTtimeToUnix(__le64 utc_nanoseconds_since_1601); +extern u64 cifs_UnixTimeToNT(struct timespec64); +extern struct timespec64 cnvrtDosUnixTm(__le16 le_date, __le16 le_time, + int offset); +extern void cifs_set_oplock_level(struct cifsInodeInfo *cinode, __u32 oplock); +extern int cifs_get_writer(struct cifsInodeInfo *cinode); +extern void cifs_put_writer(struct cifsInodeInfo *cinode); +extern void cifs_done_oplock_break(struct cifsInodeInfo *cinode); +extern int cifs_unlock_range(struct cifsFileInfo *cfile, + struct file_lock *flock, const unsigned int xid); +extern int cifs_push_mandatory_locks(struct cifsFileInfo *cfile); + +extern void cifs_down_write(struct rw_semaphore *sem); +struct cifsFileInfo *cifs_new_fileinfo(struct cifs_fid *fid, struct file *file, + struct tcon_link *tlink, __u32 oplock, + const char *symlink_target); +extern int cifs_posix_open(const char *full_path, struct inode **inode, + struct super_block *sb, int mode, + unsigned int f_flags, __u32 *oplock, __u16 *netfid, + unsigned int xid); +void cifs_fill_uniqueid(struct super_block *sb, struct cifs_fattr *fattr); +extern void cifs_unix_basic_to_fattr(struct cifs_fattr *fattr, + FILE_UNIX_BASIC_INFO *info, + struct cifs_sb_info *cifs_sb); +extern void cifs_dir_info_to_fattr(struct cifs_fattr *, FILE_DIRECTORY_INFO *, + struct cifs_sb_info *); +extern int cifs_fattr_to_inode(struct inode *inode, struct cifs_fattr *fattr, + bool from_readdir); +extern struct inode *cifs_iget(struct super_block *sb, + struct cifs_fattr *fattr); + +int cifs_get_inode_info(struct inode **inode, const char *full_path, + struct cifs_open_info_data *data, struct super_block *sb, int xid, + const struct cifs_fid *fid); +extern int smb311_posix_get_inode_info(struct inode **inode, + const char *full_path, + struct cifs_open_info_data *data, + struct super_block *sb, + const unsigned int xid); +extern int cifs_get_inode_info_unix(struct inode **pinode, + const unsigned char *search_path, + struct super_block *sb, unsigned int xid); +extern int cifs_set_file_info(struct inode *inode, struct iattr *attrs, + unsigned int xid, const char *full_path, __u32 dosattr); +extern int cifs_rename_pending_delete(const char *full_path, + struct dentry *dentry, + const unsigned int xid); +extern int sid_to_id(struct cifs_sb_info *cifs_sb, struct smb_sid *psid, + struct cifs_fattr *fattr, uint sidtype); +extern int cifs_acl_to_fattr(struct cifs_sb_info *cifs_sb, + struct cifs_fattr *fattr, struct inode *inode, + bool get_mode_from_special_sid, + const char *path, const struct cifs_fid *pfid); +extern int id_mode_to_cifs_acl(struct inode *inode, const char *path, __u64 *pnmode, + kuid_t uid, kgid_t gid); +extern struct smb_ntsd *get_cifs_acl(struct cifs_sb_info *cifssmb, struct inode *ino, + const char *path, u32 *plen, u32 info); +extern struct smb_ntsd *get_cifs_acl_by_fid(struct cifs_sb_info *cifssb, + const struct cifs_fid *pfid, u32 *plen, u32 info); +extern struct posix_acl *cifs_get_acl(struct mnt_idmap *idmap, + struct dentry *dentry, int type); +extern int cifs_set_acl(struct mnt_idmap *idmap, + struct dentry *dentry, struct posix_acl *acl, int type); +extern int set_cifs_acl(struct smb_ntsd *pntsd, __u32 len, struct inode *ino, + const char *path, int flag); +extern unsigned int setup_authusers_ACE(struct smb_ace *pace); +extern unsigned int setup_special_mode_ACE(struct smb_ace *pace, + bool posix, + __u64 nmode); +extern unsigned int setup_special_user_owner_ACE(struct smb_ace *pace); + +void dequeue_mid(struct TCP_Server_Info *server, struct mid_q_entry *mid, bool malformed); +extern int cifs_read_from_socket(struct TCP_Server_Info *server, char *buf, + unsigned int to_read); +extern ssize_t cifs_discard_from_socket(struct TCP_Server_Info *server, + size_t to_read); +int cifs_read_iter_from_socket(struct TCP_Server_Info *server, + struct iov_iter *iter, + unsigned int to_read); +extern int cifs_setup_cifs_sb(struct cifs_sb_info *cifs_sb); +void cifs_mount_put_conns(struct cifs_mount_ctx *mnt_ctx); +int cifs_mount_get_session(struct cifs_mount_ctx *mnt_ctx); +int cifs_is_path_remote(struct cifs_mount_ctx *mnt_ctx); +int cifs_mount_get_tcon(struct cifs_mount_ctx *mnt_ctx); +extern int cifs_match_super(struct super_block *, void *); +extern int cifs_mount(struct cifs_sb_info *cifs_sb, struct smb3_fs_context *ctx); +extern void cifs_umount(struct cifs_sb_info *); +extern void cifs_mark_open_files_invalid(struct cifs_tcon *tcon); +extern void cifs_reopen_persistent_handles(struct cifs_tcon *tcon); + +extern bool cifs_find_lock_conflict(struct cifsFileInfo *cfile, __u64 offset, + __u64 length, __u8 type, __u16 flags, + struct cifsLockInfo **conf_lock, + int rw_check); +extern void cifs_add_pending_open(struct cifs_fid *fid, + struct tcon_link *tlink, + struct cifs_pending_open *open); +extern void cifs_add_pending_open_locked(struct cifs_fid *fid, + struct tcon_link *tlink, + struct cifs_pending_open *open); +extern void cifs_del_pending_open(struct cifs_pending_open *open); + +extern bool cifs_is_deferred_close(struct cifsFileInfo *cfile, + struct cifs_deferred_close **dclose); + +extern void cifs_add_deferred_close(struct cifsFileInfo *cfile, + struct cifs_deferred_close *dclose); + +extern void cifs_del_deferred_close(struct cifsFileInfo *cfile); + +extern void cifs_close_deferred_file(struct cifsInodeInfo *cifs_inode); + +extern void cifs_close_all_deferred_files(struct cifs_tcon *cifs_tcon); + +void cifs_close_deferred_file_under_dentry(struct cifs_tcon *cifs_tcon, + struct dentry *dentry); + +extern void cifs_mark_open_handles_for_deleted_file(struct inode *inode, + const char *path); + +extern struct TCP_Server_Info * +cifs_get_tcp_session(struct smb3_fs_context *ctx, + struct TCP_Server_Info *primary_server); +extern void cifs_put_tcp_session(struct TCP_Server_Info *server, + int from_reconnect); +extern void cifs_put_tcon(struct cifs_tcon *tcon, enum smb3_tcon_ref_trace trace); + +extern void cifs_release_automount_timer(void); + +void cifs_proc_init(void); +void cifs_proc_clean(void); + +extern void cifs_move_llist(struct list_head *source, struct list_head *dest); +extern void cifs_free_llist(struct list_head *llist); +extern void cifs_del_lock_waiters(struct cifsLockInfo *lock); + +int cifs_tree_connect(const unsigned int xid, struct cifs_tcon *tcon); + +extern int cifs_negotiate_protocol(const unsigned int xid, + struct cifs_ses *ses, + struct TCP_Server_Info *server); +extern int cifs_setup_session(const unsigned int xid, struct cifs_ses *ses, + struct TCP_Server_Info *server, + struct nls_table *nls_info); +extern int cifs_enable_signing(struct TCP_Server_Info *server, bool mnt_sign_required); +extern int CIFSSMBNegotiate(const unsigned int xid, + struct cifs_ses *ses, + struct TCP_Server_Info *server); + +extern int CIFSTCon(const unsigned int xid, struct cifs_ses *ses, + const char *tree, struct cifs_tcon *tcon, + const struct nls_table *); + +extern int CIFSFindFirst(const unsigned int xid, struct cifs_tcon *tcon, + const char *searchName, struct cifs_sb_info *cifs_sb, + __u16 *searchHandle, __u16 search_flags, + struct cifs_search_info *psrch_inf, + bool msearch); + +extern int CIFSFindNext(const unsigned int xid, struct cifs_tcon *tcon, + __u16 searchHandle, __u16 search_flags, + struct cifs_search_info *psrch_inf); + +extern int CIFSFindClose(const unsigned int xid, struct cifs_tcon *tcon, + const __u16 search_handle); + +extern int CIFSSMBQFileInfo(const unsigned int xid, struct cifs_tcon *tcon, + u16 netfid, FILE_ALL_INFO *pFindData); +extern int CIFSSMBQPathInfo(const unsigned int xid, struct cifs_tcon *tcon, + const char *search_Name, FILE_ALL_INFO *data, + int legacy /* whether to use old info level */, + const struct nls_table *nls_codepage, int remap); +extern int SMBQueryInformation(const unsigned int xid, struct cifs_tcon *tcon, + const char *search_name, FILE_ALL_INFO *data, + const struct nls_table *nls_codepage, int remap); + +extern int CIFSSMBUnixQFileInfo(const unsigned int xid, struct cifs_tcon *tcon, + u16 netfid, FILE_UNIX_BASIC_INFO *pFindData); +extern int CIFSSMBUnixQPathInfo(const unsigned int xid, + struct cifs_tcon *tcon, + const unsigned char *searchName, + FILE_UNIX_BASIC_INFO *pFindData, + const struct nls_table *nls_codepage, int remap); + +extern int CIFSGetDFSRefer(const unsigned int xid, struct cifs_ses *ses, + const char *search_name, + struct dfs_info3_param **target_nodes, + unsigned int *num_of_nodes, + const struct nls_table *nls_codepage, int remap); + +extern int parse_dfs_referrals(struct get_dfs_referral_rsp *rsp, u32 rsp_size, + unsigned int *num_of_nodes, + struct dfs_info3_param **target_nodes, + const struct nls_table *nls_codepage, int remap, + const char *searchName, bool is_unicode); +extern void reset_cifs_unix_caps(unsigned int xid, struct cifs_tcon *tcon, + struct cifs_sb_info *cifs_sb, + struct smb3_fs_context *ctx); +extern int CIFSSMBQFSInfo(const unsigned int xid, struct cifs_tcon *tcon, + struct kstatfs *FSData); +extern int SMBOldQFSInfo(const unsigned int xid, struct cifs_tcon *tcon, + struct kstatfs *FSData); +extern int CIFSSMBSetFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon, + __u64 cap); + +extern int CIFSSMBQFSAttributeInfo(const unsigned int xid, + struct cifs_tcon *tcon); +extern int CIFSSMBQFSDeviceInfo(const unsigned int xid, struct cifs_tcon *tcon); +extern int CIFSSMBQFSUnixInfo(const unsigned int xid, struct cifs_tcon *tcon); +extern int CIFSSMBQFSPosixInfo(const unsigned int xid, struct cifs_tcon *tcon, + struct kstatfs *FSData); + +extern int SMBSetInformation(const unsigned int xid, struct cifs_tcon *tcon, + const char *fileName, __le32 attributes, __le64 write_time, + const struct nls_table *nls_codepage, + struct cifs_sb_info *cifs_sb); +extern int CIFSSMBSetPathInfo(const unsigned int xid, struct cifs_tcon *tcon, + const char *fileName, const FILE_BASIC_INFO *data, + const struct nls_table *nls_codepage, + struct cifs_sb_info *cifs_sb); +extern int CIFSSMBSetFileInfo(const unsigned int xid, struct cifs_tcon *tcon, + const FILE_BASIC_INFO *data, __u16 fid, + __u32 pid_of_opener); +extern int CIFSSMBSetFileDisposition(const unsigned int xid, + struct cifs_tcon *tcon, + bool delete_file, __u16 fid, + __u32 pid_of_opener); +extern int CIFSSMBSetEOF(const unsigned int xid, struct cifs_tcon *tcon, + const char *file_name, __u64 size, + struct cifs_sb_info *cifs_sb, bool set_allocation, + struct dentry *dentry); +extern int CIFSSMBSetFileSize(const unsigned int xid, struct cifs_tcon *tcon, + struct cifsFileInfo *cfile, __u64 size, + bool set_allocation); + +struct cifs_unix_set_info_args { + __u64 ctime; + __u64 atime; + __u64 mtime; + __u64 mode; + kuid_t uid; + kgid_t gid; + dev_t device; +}; + +extern int CIFSSMBUnixSetFileInfo(const unsigned int xid, + struct cifs_tcon *tcon, + const struct cifs_unix_set_info_args *args, + u16 fid, u32 pid_of_opener); + +extern int CIFSSMBUnixSetPathInfo(const unsigned int xid, + struct cifs_tcon *tcon, const char *file_name, + const struct cifs_unix_set_info_args *args, + const struct nls_table *nls_codepage, + int remap); + +extern int CIFSSMBMkDir(const unsigned int xid, struct inode *inode, + umode_t mode, struct cifs_tcon *tcon, + const char *name, struct cifs_sb_info *cifs_sb); +extern int CIFSSMBRmDir(const unsigned int xid, struct cifs_tcon *tcon, + const char *name, struct cifs_sb_info *cifs_sb); +extern int CIFSPOSIXDelFile(const unsigned int xid, struct cifs_tcon *tcon, + const char *name, __u16 type, + const struct nls_table *nls_codepage, + int remap_special_chars); +extern int CIFSSMBDelFile(const unsigned int xid, struct cifs_tcon *tcon, + const char *name, struct cifs_sb_info *cifs_sb, + struct dentry *dentry); +int CIFSSMBRename(const unsigned int xid, struct cifs_tcon *tcon, + struct dentry *source_dentry, + const char *from_name, const char *to_name, + struct cifs_sb_info *cifs_sb); +extern int CIFSSMBRenameOpenFile(const unsigned int xid, struct cifs_tcon *tcon, + int netfid, const char *target_name, + const struct nls_table *nls_codepage, + int remap_special_chars); +int CIFSCreateHardLink(const unsigned int xid, + struct cifs_tcon *tcon, + struct dentry *source_dentry, + const char *from_name, const char *to_name, + struct cifs_sb_info *cifs_sb); +extern int CIFSUnixCreateHardLink(const unsigned int xid, + struct cifs_tcon *tcon, + const char *fromName, const char *toName, + const struct nls_table *nls_codepage, + int remap_special_chars); +extern int CIFSUnixCreateSymLink(const unsigned int xid, + struct cifs_tcon *tcon, + const char *fromName, const char *toName, + const struct nls_table *nls_codepage, int remap); +extern int CIFSSMBUnixQuerySymLink(const unsigned int xid, + struct cifs_tcon *tcon, + const unsigned char *searchName, char **syminfo, + const struct nls_table *nls_codepage, int remap); +extern int cifs_query_reparse_point(const unsigned int xid, + struct cifs_tcon *tcon, + struct cifs_sb_info *cifs_sb, + const char *full_path, + u32 *tag, struct kvec *rsp, + int *rsp_buftype); +extern struct inode *cifs_create_reparse_inode(struct cifs_open_info_data *data, + struct super_block *sb, + const unsigned int xid, + struct cifs_tcon *tcon, + const char *full_path, + bool directory, + struct kvec *reparse_iov, + struct kvec *xattr_iov); +extern int CIFSSMB_set_compression(const unsigned int xid, + struct cifs_tcon *tcon, __u16 fid); +extern int CIFS_open(const unsigned int xid, struct cifs_open_parms *oparms, + int *oplock, FILE_ALL_INFO *buf); +extern int SMBLegacyOpen(const unsigned int xid, struct cifs_tcon *tcon, + const char *fileName, const int disposition, + const int access_flags, const int omode, + __u16 *netfid, int *pOplock, FILE_ALL_INFO *, + const struct nls_table *nls_codepage, int remap); +extern int CIFSPOSIXCreate(const unsigned int xid, struct cifs_tcon *tcon, + u32 posix_flags, __u64 mode, __u16 *netfid, + FILE_UNIX_BASIC_INFO *pRetData, + __u32 *pOplock, const char *name, + const struct nls_table *nls_codepage, int remap); +extern int CIFSSMBClose(const unsigned int xid, struct cifs_tcon *tcon, + const int smb_file_id); + +extern int CIFSSMBFlush(const unsigned int xid, struct cifs_tcon *tcon, + const int smb_file_id); + +extern int CIFSSMBRead(const unsigned int xid, struct cifs_io_parms *io_parms, + unsigned int *nbytes, char **buf, + int *return_buf_type); +extern int CIFSSMBWrite(const unsigned int xid, struct cifs_io_parms *io_parms, + unsigned int *nbytes, const char *buf); +extern int CIFSSMBWrite2(const unsigned int xid, struct cifs_io_parms *io_parms, + unsigned int *nbytes, struct kvec *iov, const int nvec); +extern int CIFSGetSrvInodeNumber(const unsigned int xid, struct cifs_tcon *tcon, + const char *search_name, __u64 *inode_number, + const struct nls_table *nls_codepage, + int remap); + +extern int cifs_lockv(const unsigned int xid, struct cifs_tcon *tcon, + const __u16 netfid, const __u8 lock_type, + const __u32 num_unlock, const __u32 num_lock, + LOCKING_ANDX_RANGE *buf); +extern int CIFSSMBLock(const unsigned int xid, struct cifs_tcon *tcon, + const __u16 netfid, const __u32 netpid, const __u64 len, + const __u64 offset, const __u32 numUnlock, + const __u32 numLock, const __u8 lockType, + const bool waitFlag, const __u8 oplock_level); +extern int CIFSSMBPosixLock(const unsigned int xid, struct cifs_tcon *tcon, + const __u16 smb_file_id, const __u32 netpid, + const loff_t start_offset, const __u64 len, + struct file_lock *, const __u16 lock_type, + const bool waitFlag); +extern int CIFSSMBTDis(const unsigned int xid, struct cifs_tcon *tcon); +extern int CIFSSMBEcho(struct TCP_Server_Info *server); +extern int CIFSSMBLogoff(const unsigned int xid, struct cifs_ses *ses); + +extern struct cifs_ses *sesInfoAlloc(void); +extern void sesInfoFree(struct cifs_ses *); +extern struct cifs_tcon *tcon_info_alloc(bool dir_leases_enabled, + enum smb3_tcon_ref_trace trace); +extern void tconInfoFree(struct cifs_tcon *tcon, enum smb3_tcon_ref_trace trace); + +extern int cifs_sign_rqst(struct smb_rqst *rqst, struct TCP_Server_Info *server, + __u32 *pexpected_response_sequence_number); +int cifs_verify_signature(struct smb_rqst *rqst, + struct TCP_Server_Info *server, + __u32 expected_sequence_number); +extern int setup_ntlmv2_rsp(struct cifs_ses *, const struct nls_table *); +extern void cifs_crypto_secmech_release(struct TCP_Server_Info *server); +extern int calc_seckey(struct cifs_ses *); +extern int generate_smb30signingkey(struct cifs_ses *ses, + struct TCP_Server_Info *server); +extern int generate_smb311signingkey(struct cifs_ses *ses, + struct TCP_Server_Info *server); + +#ifdef CONFIG_CIFS_ALLOW_INSECURE_LEGACY +extern ssize_t CIFSSMBQAllEAs(const unsigned int xid, struct cifs_tcon *tcon, + const unsigned char *searchName, + const unsigned char *ea_name, char *EAData, + size_t bufsize, struct cifs_sb_info *cifs_sb); +extern int CIFSSMBSetEA(const unsigned int xid, struct cifs_tcon *tcon, + const char *fileName, const char *ea_name, + const void *ea_value, const __u16 ea_value_len, + const struct nls_table *nls_codepage, + struct cifs_sb_info *cifs_sb); +extern int CIFSSMBGetCIFSACL(const unsigned int xid, struct cifs_tcon *tcon, + __u16 fid, struct smb_ntsd **acl_inf, __u32 *buflen, __u32 info); +extern int CIFSSMBSetCIFSACL(const unsigned int, struct cifs_tcon *, __u16, + struct smb_ntsd *pntsd, __u32 len, int aclflag); +extern int cifs_do_get_acl(const unsigned int xid, struct cifs_tcon *tcon, + const unsigned char *searchName, + struct posix_acl **acl, const int acl_type, + const struct nls_table *nls_codepage, int remap); +extern int cifs_do_set_acl(const unsigned int xid, struct cifs_tcon *tcon, + const unsigned char *fileName, + const struct posix_acl *acl, const int acl_type, + const struct nls_table *nls_codepage, int remap); +extern int CIFSGetExtAttr(const unsigned int xid, struct cifs_tcon *tcon, + const int netfid, __u64 *pExtAttrBits, __u64 *pMask); +#endif /* CONFIG_CIFS_ALLOW_INSECURE_LEGACY */ +extern void cifs_autodisable_serverino(struct cifs_sb_info *cifs_sb); +extern bool couldbe_mf_symlink(const struct cifs_fattr *fattr); +extern int check_mf_symlink(unsigned int xid, struct cifs_tcon *tcon, + struct cifs_sb_info *cifs_sb, + struct cifs_fattr *fattr, + const unsigned char *path); +extern int E_md4hash(const unsigned char *passwd, unsigned char *p16, + const struct nls_table *codepage); + +extern struct TCP_Server_Info * +cifs_find_tcp_session(struct smb3_fs_context *ctx); + +struct cifs_tcon *cifs_setup_ipc(struct cifs_ses *ses, bool seal); + +void __cifs_put_smb_ses(struct cifs_ses *ses); + +extern struct cifs_ses * +cifs_get_smb_ses(struct TCP_Server_Info *server, struct smb3_fs_context *ctx); + +int cifs_async_readv(struct cifs_io_subrequest *rdata); +int cifs_readv_receive(struct TCP_Server_Info *server, struct mid_q_entry *mid); + +void cifs_async_writev(struct cifs_io_subrequest *wdata); +int cifs_query_mf_symlink(unsigned int xid, struct cifs_tcon *tcon, + struct cifs_sb_info *cifs_sb, + const unsigned char *path, char *pbuf, + unsigned int *pbytes_read); +int cifs_create_mf_symlink(unsigned int xid, struct cifs_tcon *tcon, + struct cifs_sb_info *cifs_sb, + const unsigned char *path, char *pbuf, + unsigned int *pbytes_written); +int __cifs_calc_signature(struct smb_rqst *rqst, struct TCP_Server_Info *server, + char *signature, struct cifs_calc_sig_ctx *ctx); +enum securityEnum cifs_select_sectype(struct TCP_Server_Info *, + enum securityEnum); + +int cifs_alloc_hash(const char *name, struct shash_desc **sdesc); +void cifs_free_hash(struct shash_desc **sdesc); + +int cifs_try_adding_channels(struct cifs_ses *ses); +int smb3_update_ses_channels(struct cifs_ses *ses, struct TCP_Server_Info *server, + bool from_reconnect, bool disable_mchan); +bool is_ses_using_iface(struct cifs_ses *ses, struct cifs_server_iface *iface); + +int +cifs_ses_get_chan_index(struct cifs_ses *ses, + struct TCP_Server_Info *server); +void +cifs_chan_set_in_reconnect(struct cifs_ses *ses, + struct TCP_Server_Info *server); +void +cifs_chan_clear_in_reconnect(struct cifs_ses *ses, + struct TCP_Server_Info *server); +void +cifs_chan_set_need_reconnect(struct cifs_ses *ses, + struct TCP_Server_Info *server); +void +cifs_chan_clear_need_reconnect(struct cifs_ses *ses, + struct TCP_Server_Info *server); +bool +cifs_chan_needs_reconnect(struct cifs_ses *ses, + struct TCP_Server_Info *server); +bool +cifs_chan_is_iface_active(struct cifs_ses *ses, + struct TCP_Server_Info *server); +void +cifs_decrease_secondary_channels(struct cifs_ses *ses, bool disable_mchan); +void +cifs_chan_update_iface(struct cifs_ses *ses, struct TCP_Server_Info *server); +int +SMB3_request_interfaces(const unsigned int xid, struct cifs_tcon *tcon, bool in_mount); + +void extract_unc_hostname(const char *unc, const char **h, size_t *len); +int copy_path_name(char *dst, const char *src); +int smb2_parse_query_directory(struct cifs_tcon *tcon, struct kvec *rsp_iov, + int resp_buftype, + struct cifs_search_info *srch_inf); + +struct super_block *cifs_get_dfs_tcon_super(struct cifs_tcon *tcon); +void cifs_put_tcp_super(struct super_block *sb); +int cifs_update_super_prepath(struct cifs_sb_info *cifs_sb, char *prefix); +char *extract_hostname(const char *unc); +char *extract_sharename(const char *unc); +int parse_reparse_point(struct reparse_data_buffer *buf, + u32 plen, struct cifs_sb_info *cifs_sb, + const char *full_path, + struct cifs_open_info_data *data); +int __cifs_sfu_make_node(unsigned int xid, struct inode *inode, + struct dentry *dentry, struct cifs_tcon *tcon, + const char *full_path, umode_t mode, dev_t dev, + const char *symname); +int cifs_sfu_make_node(unsigned int xid, struct inode *inode, + struct dentry *dentry, struct cifs_tcon *tcon, + const char *full_path, umode_t mode, dev_t dev); +umode_t wire_mode_to_posix(u32 wire, bool is_dir); + +#ifdef CONFIG_CIFS_DFS_UPCALL +static inline int get_dfs_path(const unsigned int xid, struct cifs_ses *ses, + const char *old_path, + const struct nls_table *nls_codepage, + struct dfs_info3_param *referral, int remap) +{ + return dfs_cache_find(xid, ses, nls_codepage, remap, old_path, + referral, NULL); +} + +int match_target_ip(struct TCP_Server_Info *server, + const char *host, size_t hostlen, + bool *result); +int cifs_inval_name_dfs_link_error(const unsigned int xid, + struct cifs_tcon *tcon, + struct cifs_sb_info *cifs_sb, + const char *full_path, + bool *islink); +#else +static inline int cifs_inval_name_dfs_link_error(const unsigned int xid, + struct cifs_tcon *tcon, + struct cifs_sb_info *cifs_sb, + const char *full_path, + bool *islink) +{ + *islink = false; + return 0; +} +#endif + +static inline int cifs_create_options(struct cifs_sb_info *cifs_sb, int options) +{ + if (cifs_sb && (backup_cred(cifs_sb))) + return options | CREATE_OPEN_BACKUP_INTENT; + else + return options; +} + +int cifs_wait_for_server_reconnect(struct TCP_Server_Info *server, bool retry); + +static inline void cifs_put_smb_ses(struct cifs_ses *ses) +{ + __cifs_put_smb_ses(ses); +} + +/* Get an active reference of @ses and its children. + * + * NOTE: make sure to call this function when incrementing reference count of + * @ses to ensure that any DFS root session attached to it (@ses->dfs_root_ses) + * will also get its reference count incremented. + * + * cifs_put_smb_ses() will put all references, so call it when you're done. + */ +static inline void cifs_smb_ses_inc_refcount(struct cifs_ses *ses) +{ + lockdep_assert_held(&cifs_tcp_ses_lock); + ses->ses_count++; +} + +static inline bool dfs_src_pathname_equal(const char *s1, const char *s2) +{ + if (strlen(s1) != strlen(s2)) + return false; + for (; *s1; s1++, s2++) { + if (*s1 == '/' || *s1 == '\\') { + if (*s2 != '/' && *s2 != '\\') + return false; + } else if (tolower(*s1) != tolower(*s2)) + return false; + } + return true; +} + +static inline void smb_get_mid(struct mid_q_entry *mid) +{ + refcount_inc(&mid->refcount); +} + +static inline void release_mid(struct TCP_Server_Info *server, struct mid_q_entry *mid) +{ + if (refcount_dec_and_test(&mid->refcount)) + __release_mid(server, mid); +} + +static inline void cifs_free_open_info(struct cifs_open_info_data *data) +{ + kfree(data->symlink_target); + free_rsp_buf(data->reparse.io.buftype, data->reparse.io.iov.iov_base); + memset(data, 0, sizeof(*data)); +} + +static inline int smb_EIO(enum smb_eio_trace trace) +{ + trace_smb3_eio(trace, 0, 0); + return -EIO; +} + +static inline int smb_EIO1(enum smb_eio_trace trace, unsigned long info) +{ + trace_smb3_eio(trace, info, 0); + return -EIO; +} + +static inline int smb_EIO2(enum smb_eio_trace trace, unsigned long info, unsigned long info2) +{ + trace_smb3_eio(trace, info, info2); + return -EIO; +} + +static inline int cifs_get_num_sgs(const struct smb_rqst *rqst, + int num_rqst, + const u8 *sig) +{ + unsigned int len, skip; + unsigned int nents = 0; + unsigned long addr; + size_t data_size; + int i, j; + + /* + * The first rqst has a transform header where the first 20 bytes are + * not part of the encrypted blob. + */ + skip = 20; + + /* Assumes the first rqst has a transform header as the first iov. + * I.e. + * rqst[0].rq_iov[0] is transform header + * rqst[0].rq_iov[1+] data to be encrypted/decrypted + * rqst[1+].rq_iov[0+] data to be encrypted/decrypted + */ + for (i = 0; i < num_rqst; i++) { + data_size = iov_iter_count(&rqst[i].rq_iter); + + /* We really don't want a mixture of pinned and unpinned pages + * in the sglist. It's hard to keep track of which is what. + * Instead, we convert to a BVEC-type iterator higher up. + */ + if (data_size && + WARN_ON_ONCE(user_backed_iter(&rqst[i].rq_iter))) + return smb_EIO(smb_eio_trace_user_iter); + + /* We also don't want to have any extra refs or pins to clean + * up in the sglist. + */ + if (data_size && + WARN_ON_ONCE(iov_iter_extract_will_pin(&rqst[i].rq_iter))) + return smb_EIO(smb_eio_trace_extract_will_pin); + + for (j = 0; j < rqst[i].rq_nvec; j++) { + struct kvec *iov = &rqst[i].rq_iov[j]; + + addr = (unsigned long)iov->iov_base + skip; + if (is_vmalloc_or_module_addr((void *)addr)) { + len = iov->iov_len - skip; + nents += DIV_ROUND_UP(offset_in_page(addr) + len, + PAGE_SIZE); + } else { + nents++; + } + skip = 0; + } + if (data_size) + nents += iov_iter_npages(&rqst[i].rq_iter, INT_MAX); + } + nents += DIV_ROUND_UP(offset_in_page(sig) + SMB2_SIGNATURE_SIZE, PAGE_SIZE); + return nents; +} + +/* We can not use the normal sg_set_buf() as we will sometimes pass a + * stack object as buf. + */ +static inline void cifs_sg_set_buf(struct sg_table *sgtable, + const void *buf, + unsigned int buflen) +{ + unsigned long addr = (unsigned long)buf; + unsigned int off = offset_in_page(addr); + + addr &= PAGE_MASK; + if (is_vmalloc_or_module_addr((void *)addr)) { + do { + unsigned int len = min_t(unsigned int, buflen, PAGE_SIZE - off); + + sg_set_page(&sgtable->sgl[sgtable->nents++], + vmalloc_to_page((void *)addr), len, off); + + off = 0; + addr += PAGE_SIZE; + buflen -= len; + } while (buflen); + } else { + sg_set_page(&sgtable->sgl[sgtable->nents++], + virt_to_page((void *)addr), buflen, off); + } +} + +#endif /* _CIFSPROTO_H */ |