1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * Copyright (C) 2020, Microsoft Corporation. 4 * 5 * Author(s): Steve French <stfrench@microsoft.com> 6 * David Howells <dhowells@redhat.com> 7 */ 8 9 #ifndef _FS_CONTEXT_H 10 #define _FS_CONTEXT_H 11 12 #include "cifsglob.h" 13 #include <linux/parser.h> 14 #include <linux/fs_parser.h> 15 16 /* Log errors in fs_context (new mount api) but also in dmesg (old style) */ 17 #define cifs_errorf(fc, fmt, ...) \ 18 do { \ 19 errorf(fc, fmt, ## __VA_ARGS__); \ 20 cifs_dbg(VFS, fmt, ## __VA_ARGS__); \ 21 } while (0) 22 23 enum smb_version { 24 Smb_1 = 1, 25 Smb_20, 26 Smb_21, 27 Smb_30, 28 Smb_302, 29 Smb_311, 30 Smb_3any, 31 Smb_default, 32 Smb_version_err 33 }; 34 35 enum { 36 Opt_cache_loose, 37 Opt_cache_strict, 38 Opt_cache_none, 39 Opt_cache_ro, 40 Opt_cache_rw, 41 Opt_cache_err 42 }; 43 44 enum cifs_sec_param { 45 Opt_sec_krb5, 46 Opt_sec_krb5i, 47 Opt_sec_krb5p, 48 Opt_sec_ntlmsspi, 49 Opt_sec_ntlmssp, 50 Opt_sec_ntlmv2, 51 Opt_sec_ntlmv2i, 52 Opt_sec_none, 53 54 Opt_sec_err 55 }; 56 57 enum cifs_param { 58 /* Mount options that take no arguments */ 59 Opt_user_xattr, 60 Opt_forceuid, 61 Opt_forcegid, 62 Opt_noblocksend, 63 Opt_noautotune, 64 Opt_nolease, 65 Opt_nosparse, 66 Opt_hard, 67 Opt_soft, 68 Opt_perm, 69 Opt_nodelete, 70 Opt_mapposix, 71 Opt_mapchars, 72 Opt_nomapchars, 73 Opt_sfu, 74 Opt_nodfs, 75 Opt_posixpaths, 76 Opt_unix, 77 Opt_nocase, 78 Opt_brl, 79 Opt_handlecache, 80 Opt_forcemandatorylock, 81 Opt_setuidfromacl, 82 Opt_setuids, 83 Opt_dynperm, 84 Opt_intr, 85 Opt_strictsync, 86 Opt_serverino, 87 Opt_rwpidforward, 88 Opt_cifsacl, 89 Opt_acl, 90 Opt_locallease, 91 Opt_sign, 92 Opt_ignore_signature, 93 Opt_seal, 94 Opt_noac, 95 Opt_fsc, 96 Opt_mfsymlinks, 97 Opt_multiuser, 98 Opt_sloppy, 99 Opt_nosharesock, 100 Opt_persistent, 101 Opt_resilient, 102 Opt_tcp_nodelay, 103 Opt_domainauto, 104 Opt_rdma, 105 Opt_modesid, 106 Opt_rootfs, 107 Opt_multichannel, 108 Opt_compress, 109 Opt_witness, 110 111 /* Mount options which take numeric value */ 112 Opt_backupuid, 113 Opt_backupgid, 114 Opt_uid, 115 Opt_cruid, 116 Opt_gid, 117 Opt_port, 118 Opt_file_mode, 119 Opt_dirmode, 120 Opt_min_enc_offload, 121 Opt_blocksize, 122 Opt_rasize, 123 Opt_rsize, 124 Opt_wsize, 125 Opt_actimeo, 126 Opt_acdirmax, 127 Opt_acregmax, 128 Opt_closetimeo, 129 Opt_echo_interval, 130 Opt_max_credits, 131 Opt_max_cached_dirs, 132 Opt_snapshot, 133 Opt_max_channels, 134 Opt_handletimeout, 135 136 /* Mount options which take string value */ 137 Opt_source, 138 Opt_user, 139 Opt_pass, 140 Opt_pass2, 141 Opt_ip, 142 Opt_domain, 143 Opt_srcaddr, 144 Opt_iocharset, 145 Opt_netbiosname, 146 Opt_servern, 147 Opt_ver, 148 Opt_vers, 149 Opt_sec, 150 Opt_cache, 151 152 /* Mount options to be ignored */ 153 Opt_ignore, 154 155 Opt_err 156 }; 157 158 struct smb3_fs_context { 159 bool forceuid_specified; 160 bool forcegid_specified; 161 bool uid_specified; 162 bool cruid_specified; 163 bool gid_specified; 164 bool sloppy; 165 bool got_ip; 166 bool got_version; 167 bool got_rsize; 168 bool got_wsize; 169 bool got_bsize; 170 unsigned short port; 171 172 char *username; 173 char *password; 174 char *password2; 175 char *domainname; 176 char *source; 177 char *server_hostname; 178 char *UNC; 179 char *nodename; 180 char workstation_name[CIFS_MAX_WORKSTATION_LEN]; 181 char *iocharset; /* local code page for mapping to and from Unicode */ 182 char source_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* clnt nb name */ 183 char target_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* srvr nb name */ 184 kuid_t cred_uid; 185 kuid_t linux_uid; 186 kgid_t linux_gid; 187 kuid_t backupuid; 188 kgid_t backupgid; 189 umode_t file_mode; 190 umode_t dir_mode; 191 enum securityEnum sectype; /* sectype requested via mnt opts */ 192 bool sign; /* was signing requested via mnt opts? */ 193 bool ignore_signature:1; 194 bool retry:1; 195 bool intr:1; 196 bool setuids:1; 197 bool setuidfromacl:1; 198 bool override_uid:1; 199 bool override_gid:1; 200 bool dynperm:1; 201 bool noperm:1; 202 bool nodelete:1; 203 bool mode_ace:1; 204 bool no_psx_acl:1; /* set if posix acl support should be disabled */ 205 bool cifs_acl:1; 206 bool backupuid_specified; /* mount option backupuid is specified */ 207 bool backupgid_specified; /* mount option backupgid is specified */ 208 bool no_xattr:1; /* set if xattr (EA) support should be disabled*/ 209 bool server_ino:1; /* use inode numbers from server ie UniqueId */ 210 bool direct_io:1; 211 bool strict_io:1; /* strict cache behavior */ 212 bool cache_ro:1; 213 bool cache_rw:1; 214 bool remap:1; /* set to remap seven reserved chars in filenames */ 215 bool sfu_remap:1; /* remap seven reserved chars ala SFU */ 216 bool posix_paths:1; /* unset to not ask for posix pathnames. */ 217 bool no_linux_ext:1; 218 bool linux_ext:1; 219 bool sfu_emul:1; 220 bool nullauth:1; /* attempt to authenticate with null user */ 221 bool nocase:1; /* request case insensitive filenames */ 222 bool nobrl:1; /* disable sending byte range locks to srv */ 223 bool nohandlecache:1; /* disable caching dir handles if srvr probs */ 224 bool mand_lock:1; /* send mandatory not posix byte range lock reqs */ 225 bool seal:1; /* request transport encryption on share */ 226 bool nodfs:1; /* Do not request DFS, even if available */ 227 bool local_lease:1; /* check leases only on local system, not remote */ 228 bool noblocksnd:1; 229 bool noautotune:1; 230 bool nostrictsync:1; /* do not force expensive SMBflush on every sync */ 231 bool no_lease:1; /* disable requesting leases */ 232 bool no_sparse:1; /* do not attempt to set files sparse */ 233 bool fsc:1; /* enable fscache */ 234 bool mfsymlinks:1; /* use Minshall+French Symlinks */ 235 bool multiuser:1; 236 bool rwpidforward:1; /* pid forward for read/write operations */ 237 bool nosharesock:1; 238 bool persistent:1; 239 bool nopersistent:1; 240 bool resilient:1; /* noresilient not required since not fored for CA */ 241 bool domainauto:1; 242 bool rdma:1; 243 bool multichannel:1; 244 bool use_client_guid:1; 245 /* reuse existing guid for multichannel */ 246 u8 client_guid[SMB2_CLIENT_GUID_SIZE]; 247 unsigned int bsize; 248 unsigned int rasize; 249 unsigned int rsize; 250 unsigned int wsize; 251 unsigned int min_offload; 252 bool sockopt_tcp_nodelay:1; 253 /* attribute cache timemout for files and directories in jiffies */ 254 unsigned long acregmax; 255 unsigned long acdirmax; 256 /* timeout for deferred close of files in jiffies */ 257 unsigned long closetimeo; 258 struct smb_version_operations *ops; 259 struct smb_version_values *vals; 260 char *prepath; 261 struct sockaddr_storage dstaddr; /* destination address */ 262 struct sockaddr_storage srcaddr; /* allow binding to a local IP */ 263 struct nls_table *local_nls; /* This is a copy of the pointer in cifs_sb */ 264 unsigned int echo_interval; /* echo interval in secs */ 265 __u64 snapshot_time; /* needed for timewarp tokens */ 266 __u32 handle_timeout; /* persistent and durable handle timeout in ms */ 267 unsigned int max_credits; /* smb3 max_credits 10 < credits < 60000 */ 268 unsigned int max_channels; 269 unsigned int max_cached_dirs; 270 __u16 compression; /* compression algorithm 0xFFFF default 0=disabled */ 271 bool rootfs:1; /* if it's a SMB root file system */ 272 bool witness:1; /* use witness protocol */ 273 char *leaf_fullpath; 274 struct cifs_ses *dfs_root_ses; 275 bool dfs_automount:1; /* set for dfs automount only */ 276 }; 277 278 extern const struct fs_parameter_spec smb3_fs_parameters[]; 279 280 extern int smb3_init_fs_context(struct fs_context *fc); 281 extern void smb3_cleanup_fs_context_contents(struct smb3_fs_context *ctx); 282 extern void smb3_cleanup_fs_context(struct smb3_fs_context *ctx); 283 284 static inline struct smb3_fs_context *smb3_fc2context(const struct fs_context *fc) 285 { 286 return fc->fs_private; 287 } 288 289 extern int smb3_fs_context_dup(struct smb3_fs_context *new_ctx, struct smb3_fs_context *ctx); 290 extern void smb3_update_mnt_flags(struct cifs_sb_info *cifs_sb); 291 292 /* 293 * max deferred close timeout (jiffies) - 2^30 294 */ 295 #define SMB3_MAX_DCLOSETIMEO (1 << 30) 296 #define SMB3_DEF_DCLOSETIMEO (1 * HZ) /* even 1 sec enough to help eg open/write/close/open/read */ 297 #define MAX_CACHED_FIDS 16 298 extern char *cifs_sanitize_prepath(char *prepath, gfp_t gfp); 299 300 extern struct mutex cifs_mount_mutex; 301 302 static inline void cifs_mount_lock(void) 303 { 304 mutex_lock(&cifs_mount_mutex); 305 } 306 307 static inline void cifs_mount_unlock(void) 308 { 309 mutex_unlock(&cifs_mount_mutex); 310 } 311 312 #endif 313