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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Copyright (C) 2020, Microsoft Corporation.
*
* Author(s): Steve French <stfrench@microsoft.com>
* David Howells <dhowells@redhat.com>
*/
#ifndef _FS_CONTEXT_H
#define _FS_CONTEXT_H
#include "cifsglob.h"
#include <linux/parser.h>
#include <linux/fs_parser.h>
/* Log errors in fs_context (new mount api) but also in dmesg (old style) */
#define cifs_errorf(fc, fmt, ...) \
do { \
errorf(fc, fmt, ## __VA_ARGS__); \
cifs_dbg(VFS, fmt, ## __VA_ARGS__); \
} while (0)
enum smb_version {
Smb_1 = 1,
Smb_20,
Smb_21,
Smb_30,
Smb_302,
Smb_311,
Smb_3any,
Smb_default,
Smb_version_err
};
enum {
Opt_cache_loose,
Opt_cache_strict,
Opt_cache_none,
Opt_cache_ro,
Opt_cache_rw,
Opt_cache_err
};
enum cifs_sec_param {
Opt_sec_krb5,
Opt_sec_krb5i,
Opt_sec_krb5p,
Opt_sec_ntlmsspi,
Opt_sec_ntlmssp,
Opt_sec_ntlmv2,
Opt_sec_ntlmv2i,
Opt_sec_none,
Opt_sec_err
};
enum cifs_param {
/* Mount options that take no arguments */
Opt_user_xattr,
Opt_forceuid,
Opt_forcegid,
Opt_noblocksend,
Opt_noautotune,
Opt_nolease,
Opt_nosparse,
Opt_hard,
Opt_soft,
Opt_perm,
Opt_nodelete,
Opt_mapposix,
Opt_mapchars,
Opt_nomapchars,
Opt_sfu,
Opt_nodfs,
Opt_posixpaths,
Opt_unix,
Opt_nocase,
Opt_brl,
Opt_handlecache,
Opt_forcemandatorylock,
Opt_setuidfromacl,
Opt_setuids,
Opt_dynperm,
Opt_intr,
Opt_strictsync,
Opt_serverino,
Opt_rwpidforward,
Opt_cifsacl,
Opt_acl,
Opt_locallease,
Opt_sign,
Opt_ignore_signature,
Opt_seal,
Opt_noac,
Opt_fsc,
Opt_mfsymlinks,
Opt_multiuser,
Opt_sloppy,
Opt_nosharesock,
Opt_persistent,
Opt_resilient,
Opt_tcp_nodelay,
Opt_domainauto,
Opt_rdma,
Opt_modesid,
Opt_rootfs,
Opt_multichannel,
Opt_compress,
Opt_witness,
/* Mount options which take numeric value */
Opt_backupuid,
Opt_backupgid,
Opt_uid,
Opt_cruid,
Opt_gid,
Opt_port,
Opt_file_mode,
Opt_dirmode,
Opt_min_enc_offload,
Opt_blocksize,
Opt_rasize,
Opt_rsize,
Opt_wsize,
Opt_actimeo,
Opt_acdirmax,
Opt_acregmax,
Opt_closetimeo,
Opt_echo_interval,
Opt_max_credits,
Opt_max_cached_dirs,
Opt_snapshot,
Opt_max_channels,
Opt_handletimeout,
/* Mount options which take string value */
Opt_source,
Opt_user,
Opt_pass,
Opt_ip,
Opt_domain,
Opt_srcaddr,
Opt_iocharset,
Opt_netbiosname,
Opt_servern,
Opt_ver,
Opt_vers,
Opt_sec,
Opt_cache,
/* Mount options to be ignored */
Opt_ignore,
Opt_err
};
struct smb3_fs_context {
bool uid_specified;
bool cruid_specified;
bool gid_specified;
bool sloppy;
bool got_ip;
bool got_version;
bool got_rsize;
bool got_wsize;
bool got_bsize;
unsigned short port;
char *username;
char *password;
char *domainname;
char *source;
char *server_hostname;
char *UNC;
char *nodename;
char workstation_name[CIFS_MAX_WORKSTATION_LEN];
char *iocharset; /* local code page for mapping to and from Unicode */
char source_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* clnt nb name */
char target_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* srvr nb name */
kuid_t cred_uid;
kuid_t linux_uid;
kgid_t linux_gid;
kuid_t backupuid;
kgid_t backupgid;
umode_t file_mode;
umode_t dir_mode;
enum securityEnum sectype; /* sectype requested via mnt opts */
bool sign; /* was signing requested via mnt opts? */
bool ignore_signature:1;
bool retry:1;
bool intr:1;
bool setuids:1;
bool setuidfromacl:1;
bool override_uid:1;
bool override_gid:1;
bool dynperm:1;
bool noperm:1;
bool nodelete:1;
bool mode_ace:1;
bool no_psx_acl:1; /* set if posix acl support should be disabled */
bool cifs_acl:1;
bool backupuid_specified; /* mount option backupuid is specified */
bool backupgid_specified; /* mount option backupgid is specified */
bool no_xattr:1; /* set if xattr (EA) support should be disabled*/
bool server_ino:1; /* use inode numbers from server ie UniqueId */
bool direct_io:1;
bool strict_io:1; /* strict cache behavior */
bool cache_ro:1;
bool cache_rw:1;
bool remap:1; /* set to remap seven reserved chars in filenames */
bool sfu_remap:1; /* remap seven reserved chars ala SFU */
bool posix_paths:1; /* unset to not ask for posix pathnames. */
bool no_linux_ext:1;
bool linux_ext:1;
bool sfu_emul:1;
bool nullauth:1; /* attempt to authenticate with null user */
bool nocase:1; /* request case insensitive filenames */
bool nobrl:1; /* disable sending byte range locks to srv */
bool nohandlecache:1; /* disable caching dir handles if srvr probs */
bool mand_lock:1; /* send mandatory not posix byte range lock reqs */
bool seal:1; /* request transport encryption on share */
bool nodfs:1; /* Do not request DFS, even if available */
bool local_lease:1; /* check leases only on local system, not remote */
bool noblocksnd:1;
bool noautotune:1;
bool nostrictsync:1; /* do not force expensive SMBflush on every sync */
bool no_lease:1; /* disable requesting leases */
bool no_sparse:1; /* do not attempt to set files sparse */
bool fsc:1; /* enable fscache */
bool mfsymlinks:1; /* use Minshall+French Symlinks */
bool multiuser:1;
bool rwpidforward:1; /* pid forward for read/write operations */
bool nosharesock:1;
bool persistent:1;
bool nopersistent:1;
bool resilient:1; /* noresilient not required since not fored for CA */
bool domainauto:1;
bool rdma:1;
bool multichannel:1;
bool use_client_guid:1;
/* reuse existing guid for multichannel */
u8 client_guid[SMB2_CLIENT_GUID_SIZE];
unsigned int bsize;
unsigned int rasize;
unsigned int rsize;
unsigned int wsize;
unsigned int min_offload;
bool sockopt_tcp_nodelay:1;
/* attribute cache timemout for files and directories in jiffies */
unsigned long acregmax;
unsigned long acdirmax;
/* timeout for deferred close of files in jiffies */
unsigned long closetimeo;
struct smb_version_operations *ops;
struct smb_version_values *vals;
char *prepath;
struct sockaddr_storage dstaddr; /* destination address */
struct sockaddr_storage srcaddr; /* allow binding to a local IP */
struct nls_table *local_nls; /* This is a copy of the pointer in cifs_sb */
unsigned int echo_interval; /* echo interval in secs */
__u64 snapshot_time; /* needed for timewarp tokens */
__u32 handle_timeout; /* persistent and durable handle timeout in ms */
unsigned int max_credits; /* smb3 max_credits 10 < credits < 60000 */
unsigned int max_channels;
unsigned int max_cached_dirs;
__u16 compression; /* compression algorithm 0xFFFF default 0=disabled */
bool rootfs:1; /* if it's a SMB root file system */
bool witness:1; /* use witness protocol */
char *leaf_fullpath;
struct cifs_ses *dfs_root_ses;
bool dfs_automount:1; /* set for dfs automount only */
};
extern const struct fs_parameter_spec smb3_fs_parameters[];
extern int smb3_init_fs_context(struct fs_context *fc);
extern void smb3_cleanup_fs_context_contents(struct smb3_fs_context *ctx);
extern void smb3_cleanup_fs_context(struct smb3_fs_context *ctx);
static inline struct smb3_fs_context *smb3_fc2context(const struct fs_context *fc)
{
return fc->fs_private;
}
extern int smb3_fs_context_dup(struct smb3_fs_context *new_ctx, struct smb3_fs_context *ctx);
extern void smb3_update_mnt_flags(struct cifs_sb_info *cifs_sb);
/*
* max deferred close timeout (jiffies) - 2^30
*/
#define SMB3_MAX_DCLOSETIMEO (1 << 30)
#define SMB3_DEF_DCLOSETIMEO (1 * HZ) /* even 1 sec enough to help eg open/write/close/open/read */
#define MAX_CACHED_FIDS 16
extern char *cifs_sanitize_prepath(char *prepath, gfp_t gfp);
#endif
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