Commit | Line | Data |
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b3b94faa DT |
1 | /* |
2 | * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved. | |
3a8a9a10 | 3 | * Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved. |
b3b94faa DT |
4 | * |
5 | * This copyrighted material is made available to anyone wishing to use, | |
6 | * modify, copy, or redistribute it subject to the terms and conditions | |
e9fc2aa0 | 7 | * of the GNU General Public License version 2. |
b3b94faa DT |
8 | */ |
9 | ||
b3b94faa DT |
10 | #include <linux/slab.h> |
11 | #include <linux/spinlock.h> | |
12 | #include <linux/completion.h> | |
13 | #include <linux/buffer_head.h> | |
5c676f6d | 14 | #include <linux/gfs2_ondisk.h> |
7d308590 | 15 | #include <linux/lm_interface.h> |
476c006b | 16 | #include <linux/parser.h> |
b3b94faa DT |
17 | |
18 | #include "gfs2.h" | |
5c676f6d | 19 | #include "incore.h" |
b3b94faa DT |
20 | #include "mount.h" |
21 | #include "sys.h" | |
5c676f6d | 22 | #include "util.h" |
b3b94faa | 23 | |
476c006b JB |
24 | enum { |
25 | Opt_lockproto, | |
26 | Opt_locktable, | |
27 | Opt_hostdata, | |
28 | Opt_spectator, | |
29 | Opt_ignore_local_fs, | |
30 | Opt_localflocks, | |
31 | Opt_localcaching, | |
32 | Opt_debug, | |
33 | Opt_nodebug, | |
34 | Opt_upgrade, | |
476c006b JB |
35 | Opt_acl, |
36 | Opt_noacl, | |
37 | Opt_quota_off, | |
38 | Opt_quota_account, | |
39 | Opt_quota_on, | |
40 | Opt_suiddir, | |
41 | Opt_nosuiddir, | |
42 | Opt_data_writeback, | |
43 | Opt_data_ordered, | |
9b8df98f | 44 | Opt_meta, |
9a5ad138 | 45 | Opt_err, |
476c006b JB |
46 | }; |
47 | ||
a447c093 | 48 | static const match_table_t tokens = { |
476c006b JB |
49 | {Opt_lockproto, "lockproto=%s"}, |
50 | {Opt_locktable, "locktable=%s"}, | |
51 | {Opt_hostdata, "hostdata=%s"}, | |
52 | {Opt_spectator, "spectator"}, | |
53 | {Opt_ignore_local_fs, "ignore_local_fs"}, | |
54 | {Opt_localflocks, "localflocks"}, | |
55 | {Opt_localcaching, "localcaching"}, | |
56 | {Opt_debug, "debug"}, | |
57 | {Opt_nodebug, "nodebug"}, | |
58 | {Opt_upgrade, "upgrade"}, | |
476c006b JB |
59 | {Opt_acl, "acl"}, |
60 | {Opt_noacl, "noacl"}, | |
61 | {Opt_quota_off, "quota=off"}, | |
62 | {Opt_quota_account, "quota=account"}, | |
63 | {Opt_quota_on, "quota=on"}, | |
64 | {Opt_suiddir, "suiddir"}, | |
65 | {Opt_nosuiddir, "nosuiddir"}, | |
66 | {Opt_data_writeback, "data=writeback"}, | |
9a5ad138 | 67 | {Opt_data_ordered, "data=ordered"}, |
9b8df98f | 68 | {Opt_meta, "meta"}, |
9a5ad138 | 69 | {Opt_err, NULL} |
476c006b JB |
70 | }; |
71 | ||
b3b94faa DT |
72 | /** |
73 | * gfs2_mount_args - Parse mount options | |
74 | * @sdp: | |
75 | * @data: | |
76 | * | |
77 | * Return: errno | |
78 | */ | |
79 | ||
80 | int gfs2_mount_args(struct gfs2_sbd *sdp, char *data_arg, int remount) | |
81 | { | |
82 | struct gfs2_args *args = &sdp->sd_args; | |
83 | char *data = data_arg; | |
84 | char *options, *o, *v; | |
85 | int error = 0; | |
86 | ||
d18c4d68 | 87 | if (!remount) { |
d18c4d68 | 88 | /* Set some defaults */ |
d18c4d68 SW |
89 | args->ar_quota = GFS2_QUOTA_DEFAULT; |
90 | args->ar_data = GFS2_DATA_DEFAULT; | |
91 | } | |
b3b94faa DT |
92 | |
93 | /* Split the options into tokens with the "," character and | |
94 | process them */ | |
95 | ||
96 | for (options = data; (o = strsep(&options, ",")); ) { | |
97cc1025 | 97 | int token; |
476c006b JB |
98 | substring_t tmp[MAX_OPT_ARGS]; |
99 | ||
b3b94faa DT |
100 | if (!*o) |
101 | continue; | |
102 | ||
476c006b JB |
103 | token = match_token(o, tokens, tmp); |
104 | switch (token) { | |
105 | case Opt_lockproto: | |
106 | v = match_strdup(&tmp[0]); | |
107 | if (!v) { | |
108 | fs_info(sdp, "no memory for lockproto\n"); | |
109 | error = -ENOMEM; | |
110 | goto out_error; | |
111 | } | |
b3b94faa | 112 | |
476c006b JB |
113 | if (remount && strcmp(v, args->ar_lockproto)) { |
114 | kfree(v); | |
b3b94faa | 115 | goto cant_remount; |
476c006b JB |
116 | } |
117 | ||
b3b94faa DT |
118 | strncpy(args->ar_lockproto, v, GFS2_LOCKNAME_LEN); |
119 | args->ar_lockproto[GFS2_LOCKNAME_LEN - 1] = 0; | |
476c006b JB |
120 | kfree(v); |
121 | break; | |
122 | case Opt_locktable: | |
123 | v = match_strdup(&tmp[0]); | |
124 | if (!v) { | |
125 | fs_info(sdp, "no memory for locktable\n"); | |
126 | error = -ENOMEM; | |
127 | goto out_error; | |
128 | } | |
b3b94faa | 129 | |
476c006b JB |
130 | if (remount && strcmp(v, args->ar_locktable)) { |
131 | kfree(v); | |
b3b94faa | 132 | goto cant_remount; |
476c006b JB |
133 | } |
134 | ||
b3b94faa | 135 | strncpy(args->ar_locktable, v, GFS2_LOCKNAME_LEN); |
476c006b JB |
136 | args->ar_locktable[GFS2_LOCKNAME_LEN - 1] = 0; |
137 | kfree(v); | |
138 | break; | |
139 | case Opt_hostdata: | |
140 | v = match_strdup(&tmp[0]); | |
141 | if (!v) { | |
142 | fs_info(sdp, "no memory for hostdata\n"); | |
143 | error = -ENOMEM; | |
144 | goto out_error; | |
145 | } | |
b3b94faa | 146 | |
476c006b JB |
147 | if (remount && strcmp(v, args->ar_hostdata)) { |
148 | kfree(v); | |
b3b94faa | 149 | goto cant_remount; |
476c006b JB |
150 | } |
151 | ||
b3b94faa DT |
152 | strncpy(args->ar_hostdata, v, GFS2_LOCKNAME_LEN); |
153 | args->ar_hostdata[GFS2_LOCKNAME_LEN - 1] = 0; | |
476c006b JB |
154 | kfree(v); |
155 | break; | |
156 | case Opt_spectator: | |
b3b94faa DT |
157 | if (remount && !args->ar_spectator) |
158 | goto cant_remount; | |
159 | args->ar_spectator = 1; | |
160 | sdp->sd_vfs->s_flags |= MS_RDONLY; | |
476c006b JB |
161 | break; |
162 | case Opt_ignore_local_fs: | |
b3b94faa DT |
163 | if (remount && !args->ar_ignore_local_fs) |
164 | goto cant_remount; | |
165 | args->ar_ignore_local_fs = 1; | |
476c006b JB |
166 | break; |
167 | case Opt_localflocks: | |
b3b94faa DT |
168 | if (remount && !args->ar_localflocks) |
169 | goto cant_remount; | |
170 | args->ar_localflocks = 1; | |
476c006b JB |
171 | break; |
172 | case Opt_localcaching: | |
b3b94faa DT |
173 | if (remount && !args->ar_localcaching) |
174 | goto cant_remount; | |
175 | args->ar_localcaching = 1; | |
476c006b JB |
176 | break; |
177 | case Opt_debug: | |
b3b94faa | 178 | args->ar_debug = 1; |
476c006b JB |
179 | break; |
180 | case Opt_nodebug: | |
b3b94faa | 181 | args->ar_debug = 0; |
476c006b JB |
182 | break; |
183 | case Opt_upgrade: | |
b3b94faa DT |
184 | if (remount && !args->ar_upgrade) |
185 | goto cant_remount; | |
186 | args->ar_upgrade = 1; | |
476c006b | 187 | break; |
476c006b | 188 | case Opt_acl: |
b3b94faa DT |
189 | args->ar_posix_acl = 1; |
190 | sdp->sd_vfs->s_flags |= MS_POSIXACL; | |
476c006b JB |
191 | break; |
192 | case Opt_noacl: | |
b3b94faa DT |
193 | args->ar_posix_acl = 0; |
194 | sdp->sd_vfs->s_flags &= ~MS_POSIXACL; | |
476c006b JB |
195 | break; |
196 | case Opt_quota_off: | |
197 | args->ar_quota = GFS2_QUOTA_OFF; | |
198 | break; | |
199 | case Opt_quota_account: | |
200 | args->ar_quota = GFS2_QUOTA_ACCOUNT; | |
201 | break; | |
202 | case Opt_quota_on: | |
203 | args->ar_quota = GFS2_QUOTA_ON; | |
204 | break; | |
205 | case Opt_suiddir: | |
b3b94faa | 206 | args->ar_suiddir = 1; |
476c006b JB |
207 | break; |
208 | case Opt_nosuiddir: | |
b3b94faa | 209 | args->ar_suiddir = 0; |
476c006b JB |
210 | break; |
211 | case Opt_data_writeback: | |
212 | args->ar_data = GFS2_DATA_WRITEBACK; | |
213 | break; | |
214 | case Opt_data_ordered: | |
215 | args->ar_data = GFS2_DATA_ORDERED; | |
216 | break; | |
9b8df98f SW |
217 | case Opt_meta: |
218 | if (remount && args->ar_meta != 1) | |
219 | goto cant_remount; | |
220 | args->ar_meta = 1; | |
221 | break; | |
9a5ad138 | 222 | case Opt_err: |
476c006b | 223 | default: |
b3b94faa DT |
224 | fs_info(sdp, "unknown option: %s\n", o); |
225 | error = -EINVAL; | |
476c006b | 226 | goto out_error; |
b3b94faa DT |
227 | } |
228 | } | |
229 | ||
476c006b | 230 | out_error: |
b3b94faa DT |
231 | if (error) |
232 | fs_info(sdp, "invalid mount option(s)\n"); | |
233 | ||
234 | if (data != data_arg) | |
235 | kfree(data); | |
236 | ||
237 | return error; | |
238 | ||
a91ea69f | 239 | cant_remount: |
b3b94faa DT |
240 | fs_info(sdp, "can't remount with option %s\n", o); |
241 | return -EINVAL; | |
242 | } | |
243 |