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_hard,
66 Opt_soft,
67 Opt_perm,
68 Opt_nodelete,
69 Opt_mapposix,
70 Opt_mapchars,
71 Opt_nomapchars,
72 Opt_sfu,
73 Opt_nodfs,
74 Opt_posixpaths,
75 Opt_unix,
76 Opt_nocase,
77 Opt_brl,
78 Opt_handlecache,
79 Opt_forcemandatorylock,
80 Opt_setuidfromacl,
81 Opt_setuids,
82 Opt_dynperm,
83 Opt_intr,
84 Opt_strictsync,
85 Opt_serverino,
86 Opt_rwpidforward,
87 Opt_cifsacl,
88 Opt_acl,
89 Opt_locallease,
90 Opt_sign,
91 Opt_ignore_signature,
92 Opt_seal,
93 Opt_noac,
94 Opt_fsc,
95 Opt_mfsymlinks,
96 Opt_multiuser,
97 Opt_sloppy,
98 Opt_nosharesock,
99 Opt_persistent,
100 Opt_resilient,
101 Opt_domainauto,
102 Opt_rdma,
103 Opt_modesid,
104 Opt_rootfs,
105 Opt_multichannel,
106 Opt_compress,
107 Opt_witness,
108
109 /* Mount options which take numeric value */
110 Opt_backupuid,
111 Opt_backupgid,
112 Opt_uid,
113 Opt_cruid,
114 Opt_gid,
115 Opt_port,
116 Opt_file_mode,
117 Opt_dirmode,
118 Opt_min_enc_offload,
119 Opt_blocksize,
120 Opt_rasize,
121 Opt_rsize,
122 Opt_wsize,
123 Opt_actimeo,
124 Opt_acdirmax,
125 Opt_acregmax,
126 Opt_echo_interval,
127 Opt_max_credits,
128 Opt_snapshot,
129 Opt_max_channels,
130 Opt_handletimeout,
131
132 /* Mount options which take string value */
133 Opt_source,
134 Opt_user,
135 Opt_pass,
136 Opt_ip,
137 Opt_domain,
138 Opt_srcaddr,
139 Opt_iocharset,
140 Opt_netbiosname,
141 Opt_servern,
142 Opt_ver,
143 Opt_vers,
144 Opt_sec,
145 Opt_cache,
146
147 /* Mount options to be ignored */
148 Opt_ignore,
149
150 Opt_err
151 };
152
153 struct smb3_fs_context {
154 bool uid_specified;
155 bool cruid_specified;
156 bool gid_specified;
157 bool sloppy;
158 bool got_ip;
159 bool got_version;
160 bool got_rsize;
161 bool got_wsize;
162 bool got_bsize;
163 unsigned short port;
164
165 char *username;
166 char *password;
167 char *domainname;
168 char *source;
169 char *UNC;
170 char *nodename;
171 char *iocharset; /* local code page for mapping to and from Unicode */
172 char source_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* clnt nb name */
173 char target_rfc1001_name[RFC1001_NAME_LEN_WITH_NULL]; /* srvr nb name */
174 kuid_t cred_uid;
175 kuid_t linux_uid;
176 kgid_t linux_gid;
177 kuid_t backupuid;
178 kgid_t backupgid;
179 umode_t file_mode;
180 umode_t dir_mode;
181 enum securityEnum sectype; /* sectype requested via mnt opts */
182 bool sign; /* was signing requested via mnt opts? */
183 bool ignore_signature:1;
184 bool retry:1;
185 bool intr:1;
186 bool setuids:1;
187 bool setuidfromacl:1;
188 bool override_uid:1;
189 bool override_gid:1;
190 bool dynperm:1;
191 bool noperm:1;
192 bool nodelete:1;
193 bool mode_ace:1;
194 bool no_psx_acl:1; /* set if posix acl support should be disabled */
195 bool cifs_acl:1;
196 bool backupuid_specified; /* mount option backupuid is specified */
197 bool backupgid_specified; /* mount option backupgid is specified */
198 bool no_xattr:1; /* set if xattr (EA) support should be disabled*/
199 bool server_ino:1; /* use inode numbers from server ie UniqueId */
200 bool direct_io:1;
201 bool strict_io:1; /* strict cache behavior */
202 bool cache_ro:1;
203 bool cache_rw:1;
204 bool remap:1; /* set to remap seven reserved chars in filenames */
205 bool sfu_remap:1; /* remap seven reserved chars ala SFU */
206 bool posix_paths:1; /* unset to not ask for posix pathnames. */
207 bool no_linux_ext:1;
208 bool linux_ext:1;
209 bool sfu_emul:1;
210 bool nullauth:1; /* attempt to authenticate with null user */
211 bool nocase:1; /* request case insensitive filenames */
212 bool nobrl:1; /* disable sending byte range locks to srv */
213 bool nohandlecache:1; /* disable caching dir handles if srvr probs */
214 bool mand_lock:1; /* send mandatory not posix byte range lock reqs */
215 bool seal:1; /* request transport encryption on share */
216 bool nodfs:1; /* Do not request DFS, even if available */
217 bool local_lease:1; /* check leases only on local system, not remote */
218 bool noblocksnd:1;
219 bool noautotune:1;
220 bool nostrictsync:1; /* do not force expensive SMBflush on every sync */
221 bool no_lease:1; /* disable requesting leases */
222 bool fsc:1; /* enable fscache */
223 bool mfsymlinks:1; /* use Minshall+French Symlinks */
224 bool multiuser:1;
225 bool rwpidforward:1; /* pid forward for read/write operations */
226 bool nosharesock:1;
227 bool persistent:1;
228 bool nopersistent:1;
229 bool resilient:1; /* noresilient not required since not fored for CA */
230 bool domainauto:1;
231 bool rdma:1;
232 bool multichannel:1;
233 bool use_client_guid:1;
234 /* reuse existing guid for multichannel */
235 u8 client_guid[SMB2_CLIENT_GUID_SIZE];
236 unsigned int bsize;
237 unsigned int rasize;
238 unsigned int rsize;
239 unsigned int wsize;
240 unsigned int min_offload;
241 bool sockopt_tcp_nodelay:1;
242 /* attribute cache timemout for files and directories in jiffies */
243 unsigned long acregmax;
244 unsigned long acdirmax;
245 struct smb_version_operations *ops;
246 struct smb_version_values *vals;
247 char *prepath;
248 struct sockaddr_storage dstaddr; /* destination address */
249 struct sockaddr_storage srcaddr; /* allow binding to a local IP */
250 struct nls_table *local_nls; /* This is a copy of the pointer in cifs_sb */
251 unsigned int echo_interval; /* echo interval in secs */
252 __u64 snapshot_time; /* needed for timewarp tokens */
253 __u32 handle_timeout; /* persistent and durable handle timeout in ms */
254 unsigned int max_credits; /* smb3 max_credits 10 < credits < 60000 */
255 unsigned int max_channels;
256 __u16 compression; /* compression algorithm 0xFFFF default 0=disabled */
257 bool rootfs:1; /* if it's a SMB root file system */
258 bool witness:1; /* use witness protocol */
259
260 char *mount_options;
261 };
262
263 extern const struct fs_parameter_spec smb3_fs_parameters[];
264
265 extern int smb3_init_fs_context(struct fs_context *fc);
266 extern void smb3_cleanup_fs_context_contents(struct smb3_fs_context *ctx);
267 extern void smb3_cleanup_fs_context(struct smb3_fs_context *ctx);
268
smb3_fc2context(const struct fs_context * fc)269 static inline struct smb3_fs_context *smb3_fc2context(const struct fs_context *fc)
270 {
271 return fc->fs_private;
272 }
273
274 extern int smb3_fs_context_dup(struct smb3_fs_context *new_ctx, struct smb3_fs_context *ctx);
275 extern void smb3_update_mnt_flags(struct cifs_sb_info *cifs_sb);
276
277 #endif
278
