2 * Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
3 * Copyright (C) 2004-2005 Red Hat, Inc. All rights reserved.
5 * This copyrighted material is made available to anyone wishing to use,
6 * modify, copy, or redistribute it subject to the terms and conditions
7 * of the GNU General Public License v.2.
10 #include <linux/sched.h>
11 #include <linux/slab.h>
12 #include <linux/spinlock.h>
13 #include <linux/completion.h>
14 #include <linux/buffer_head.h>
15 #include <linux/gfs2_ondisk.h>
16 #include <asm/semaphore.h>
19 #include "lm_interface.h"
26 * gfs2_mount_args - Parse mount options
33 int gfs2_mount_args(struct gfs2_sbd
*sdp
, char *data_arg
, int remount
)
35 struct gfs2_args
*args
= &sdp
->sd_args
;
36 char *data
= data_arg
;
37 char *options
, *o
, *v
;
41 /* If someone preloaded options, use those instead */
42 spin_lock(&gfs2_sys_margs_lock
);
44 data
= gfs2_sys_margs
;
45 gfs2_sys_margs
= NULL
;
47 spin_unlock(&gfs2_sys_margs_lock
);
49 /* Set some defaults */
50 args
->ar_num_glockd
= GFS2_GLOCKD_DEFAULT
;
51 args
->ar_quota
= GFS2_QUOTA_DEFAULT
;
52 args
->ar_data
= GFS2_DATA_DEFAULT
;
55 /* Split the options into tokens with the "," character and
58 for (options
= data
; (o
= strsep(&options
, ",")); ) {
66 if (!strcmp(o
, "lockproto")) {
69 if (remount
&& strcmp(v
, args
->ar_lockproto
))
71 strncpy(args
->ar_lockproto
, v
, GFS2_LOCKNAME_LEN
);
72 args
->ar_lockproto
[GFS2_LOCKNAME_LEN
- 1] = 0;
75 else if (!strcmp(o
, "locktable")) {
78 if (remount
&& strcmp(v
, args
->ar_locktable
))
80 strncpy(args
->ar_locktable
, v
, GFS2_LOCKNAME_LEN
);
81 args
->ar_locktable
[GFS2_LOCKNAME_LEN
- 1] = 0;
84 else if (!strcmp(o
, "hostdata")) {
87 if (remount
&& strcmp(v
, args
->ar_hostdata
))
89 strncpy(args
->ar_hostdata
, v
, GFS2_LOCKNAME_LEN
);
90 args
->ar_hostdata
[GFS2_LOCKNAME_LEN
- 1] = 0;
93 else if (!strcmp(o
, "spectator")) {
94 if (remount
&& !args
->ar_spectator
)
96 args
->ar_spectator
= 1;
97 sdp
->sd_vfs
->s_flags
|= MS_RDONLY
;
100 else if (!strcmp(o
, "ignore_local_fs")) {
101 if (remount
&& !args
->ar_ignore_local_fs
)
103 args
->ar_ignore_local_fs
= 1;
106 else if (!strcmp(o
, "localflocks")) {
107 if (remount
&& !args
->ar_localflocks
)
109 args
->ar_localflocks
= 1;
112 else if (!strcmp(o
, "localcaching")) {
113 if (remount
&& !args
->ar_localcaching
)
115 args
->ar_localcaching
= 1;
118 else if (!strcmp(o
, "debug"))
121 else if (!strcmp(o
, "nodebug"))
124 else if (!strcmp(o
, "upgrade")) {
125 if (remount
&& !args
->ar_upgrade
)
127 args
->ar_upgrade
= 1;
130 else if (!strcmp(o
, "num_glockd")) {
135 if (remount
&& x
!= args
->ar_num_glockd
)
137 if (!x
|| x
> GFS2_GLOCKD_MAX
) {
138 fs_info(sdp
, "0 < num_glockd <= %u (not %u)\n",
143 args
->ar_num_glockd
= x
;
146 else if (!strcmp(o
, "acl")) {
147 args
->ar_posix_acl
= 1;
148 sdp
->sd_vfs
->s_flags
|= MS_POSIXACL
;
151 else if (!strcmp(o
, "noacl")) {
152 args
->ar_posix_acl
= 0;
153 sdp
->sd_vfs
->s_flags
&= ~MS_POSIXACL
;
156 else if (!strcmp(o
, "quota")) {
159 if (!strcmp(v
, "off"))
160 args
->ar_quota
= GFS2_QUOTA_OFF
;
161 else if (!strcmp(v
, "account"))
162 args
->ar_quota
= GFS2_QUOTA_ACCOUNT
;
163 else if (!strcmp(v
, "on"))
164 args
->ar_quota
= GFS2_QUOTA_ON
;
166 fs_info(sdp
, "invalid value for quota\n");
172 else if (!strcmp(o
, "suiddir"))
173 args
->ar_suiddir
= 1;
175 else if (!strcmp(o
, "nosuiddir"))
176 args
->ar_suiddir
= 0;
178 else if (!strcmp(o
, "data")) {
181 if (!strcmp(v
, "writeback"))
182 args
->ar_data
= GFS2_DATA_WRITEBACK
;
183 else if (!strcmp(v
, "ordered"))
184 args
->ar_data
= GFS2_DATA_ORDERED
;
186 fs_info(sdp
, "invalid value for data\n");
193 fs_info(sdp
, "unknown option: %s\n", o
);
200 fs_info(sdp
, "invalid mount option(s)\n");
202 if (data
!= data_arg
)
208 fs_info(sdp
, "need value for option %s\n", o
);
212 fs_info(sdp
, "can't remount with option %s\n", o
);
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