* of the GNU General Public License version 2.
*/
-#include <linux/sched.h>
#include <linux/slab.h>
#include <linux/spinlock.h>
#include <linux/completion.h>
#include <linux/buffer_head.h>
#include <linux/gfs2_ondisk.h>
-#include <linux/lm_interface.h>
+#include <linux/parser.h>
#include "gfs2.h"
#include "incore.h"
-#include "mount.h"
+#include "super.h"
#include "sys.h"
#include "util.h"
+enum {
+ Opt_lockproto,
+ Opt_locktable,
+ Opt_hostdata,
+ Opt_spectator,
+ Opt_ignore_local_fs,
+ Opt_localflocks,
+ Opt_localcaching,
+ Opt_debug,
+ Opt_nodebug,
+ Opt_upgrade,
+ Opt_acl,
+ Opt_noacl,
+ Opt_quota_off,
+ Opt_quota_account,
+ Opt_quota_on,
+ Opt_quota,
+ Opt_noquota,
+ Opt_suiddir,
+ Opt_nosuiddir,
+ Opt_data_writeback,
+ Opt_data_ordered,
+ Opt_meta,
+ Opt_discard,
+ Opt_nodiscard,
+ Opt_err,
+};
+
+static const match_table_t tokens = {
+ {Opt_lockproto, "lockproto=%s"},
+ {Opt_locktable, "locktable=%s"},
+ {Opt_hostdata, "hostdata=%s"},
+ {Opt_spectator, "spectator"},
+ {Opt_ignore_local_fs, "ignore_local_fs"},
+ {Opt_localflocks, "localflocks"},
+ {Opt_localcaching, "localcaching"},
+ {Opt_debug, "debug"},
+ {Opt_nodebug, "nodebug"},
+ {Opt_upgrade, "upgrade"},
+ {Opt_acl, "acl"},
+ {Opt_noacl, "noacl"},
+ {Opt_quota_off, "quota=off"},
+ {Opt_quota_account, "quota=account"},
+ {Opt_quota_on, "quota=on"},
+ {Opt_quota, "quota"},
+ {Opt_noquota, "noquota"},
+ {Opt_suiddir, "suiddir"},
+ {Opt_nosuiddir, "nosuiddir"},
+ {Opt_data_writeback, "data=writeback"},
+ {Opt_data_ordered, "data=ordered"},
+ {Opt_meta, "meta"},
+ {Opt_discard, "discard"},
+ {Opt_nodiscard, "nodiscard"},
+ {Opt_err, NULL}
+};
+
/**
* gfs2_mount_args - Parse mount options
* @sdp:
* Return: errno
*/
-int gfs2_mount_args(struct gfs2_sbd *sdp, char *data_arg, int remount)
+int gfs2_mount_args(struct gfs2_sbd *sdp, struct gfs2_args *args, char *options)
{
- struct gfs2_args *args = &sdp->sd_args;
- char *data = data_arg;
- char *options, *o, *v;
- int error = 0;
-
- if (!remount) {
- /* If someone preloaded options, use those instead */
- spin_lock(&gfs2_sys_margs_lock);
- if (gfs2_sys_margs) {
- data = gfs2_sys_margs;
- gfs2_sys_margs = NULL;
- }
- spin_unlock(&gfs2_sys_margs_lock);
-
- /* Set some defaults */
- args->ar_num_glockd = GFS2_GLOCKD_DEFAULT;
- args->ar_quota = GFS2_QUOTA_DEFAULT;
- args->ar_data = GFS2_DATA_DEFAULT;
- }
+ char *o;
+ int token;
+ substring_t tmp[MAX_OPT_ARGS];
/* Split the options into tokens with the "," character and
process them */
- for (options = data; (o = strsep(&options, ",")); ) {
- if (!*o)
+ while (1) {
+ o = strsep(&options, ",");
+ if (o == NULL)
+ break;
+ if (*o == '\0')
continue;
- v = strchr(o, '=');
- if (v)
- *v++ = 0;
-
- if (!strcmp(o, "lockproto")) {
- if (!v)
- goto need_value;
- if (remount && strcmp(v, args->ar_lockproto))
- goto cant_remount;
- strncpy(args->ar_lockproto, v, GFS2_LOCKNAME_LEN);
- args->ar_lockproto[GFS2_LOCKNAME_LEN - 1] = 0;
- }
-
- else if (!strcmp(o, "locktable")) {
- if (!v)
- goto need_value;
- if (remount && strcmp(v, args->ar_locktable))
- goto cant_remount;
- strncpy(args->ar_locktable, v, GFS2_LOCKNAME_LEN);
- args->ar_locktable[GFS2_LOCKNAME_LEN - 1] = 0;
- }
-
- else if (!strcmp(o, "hostdata")) {
- if (!v)
- goto need_value;
- if (remount && strcmp(v, args->ar_hostdata))
- goto cant_remount;
- strncpy(args->ar_hostdata, v, GFS2_LOCKNAME_LEN);
- args->ar_hostdata[GFS2_LOCKNAME_LEN - 1] = 0;
- }
-
- else if (!strcmp(o, "spectator")) {
- if (remount && !args->ar_spectator)
- goto cant_remount;
+ token = match_token(o, tokens, tmp);
+ switch (token) {
+ case Opt_lockproto:
+ match_strlcpy(args->ar_lockproto, &tmp[0],
+ GFS2_LOCKNAME_LEN);
+ break;
+ case Opt_locktable:
+ match_strlcpy(args->ar_locktable, &tmp[0],
+ GFS2_LOCKNAME_LEN);
+ break;
+ case Opt_hostdata:
+ match_strlcpy(args->ar_hostdata, &tmp[0],
+ GFS2_LOCKNAME_LEN);
+ break;
+ case Opt_spectator:
args->ar_spectator = 1;
- sdp->sd_vfs->s_flags |= MS_RDONLY;
- }
-
- else if (!strcmp(o, "ignore_local_fs")) {
- if (remount && !args->ar_ignore_local_fs)
- goto cant_remount;
+ break;
+ case Opt_ignore_local_fs:
args->ar_ignore_local_fs = 1;
- }
-
- else if (!strcmp(o, "localflocks")) {
- if (remount && !args->ar_localflocks)
- goto cant_remount;
+ break;
+ case Opt_localflocks:
args->ar_localflocks = 1;
- }
-
- else if (!strcmp(o, "localcaching")) {
- if (remount && !args->ar_localcaching)
- goto cant_remount;
+ break;
+ case Opt_localcaching:
args->ar_localcaching = 1;
- }
-
- else if (!strcmp(o, "debug"))
+ break;
+ case Opt_debug:
args->ar_debug = 1;
-
- else if (!strcmp(o, "nodebug"))
+ break;
+ case Opt_nodebug:
args->ar_debug = 0;
-
- else if (!strcmp(o, "upgrade")) {
- if (remount && !args->ar_upgrade)
- goto cant_remount;
+ break;
+ case Opt_upgrade:
args->ar_upgrade = 1;
- }
-
- else if (!strcmp(o, "num_glockd")) {
- unsigned int x;
- if (!v)
- goto need_value;
- sscanf(v, "%u", &x);
- if (remount && x != args->ar_num_glockd)
- goto cant_remount;
- if (!x || x > GFS2_GLOCKD_MAX) {
- fs_info(sdp, "0 < num_glockd <= %u (not %u)\n",
- GFS2_GLOCKD_MAX, x);
- error = -EINVAL;
- break;
- }
- args->ar_num_glockd = x;
- }
-
- else if (!strcmp(o, "acl")) {
+ break;
+ case Opt_acl:
args->ar_posix_acl = 1;
- sdp->sd_vfs->s_flags |= MS_POSIXACL;
- }
-
- else if (!strcmp(o, "noacl")) {
+ break;
+ case Opt_noacl:
args->ar_posix_acl = 0;
- sdp->sd_vfs->s_flags &= ~MS_POSIXACL;
- }
-
- else if (!strcmp(o, "quota")) {
- if (!v)
- goto need_value;
- if (!strcmp(v, "off"))
- args->ar_quota = GFS2_QUOTA_OFF;
- else if (!strcmp(v, "account"))
- args->ar_quota = GFS2_QUOTA_ACCOUNT;
- else if (!strcmp(v, "on"))
- args->ar_quota = GFS2_QUOTA_ON;
- else {
- fs_info(sdp, "invalid value for quota\n");
- error = -EINVAL;
- break;
- }
- }
-
- else if (!strcmp(o, "suiddir"))
+ break;
+ case Opt_quota_off:
+ case Opt_noquota:
+ args->ar_quota = GFS2_QUOTA_OFF;
+ break;
+ case Opt_quota_account:
+ args->ar_quota = GFS2_QUOTA_ACCOUNT;
+ break;
+ case Opt_quota_on:
+ case Opt_quota:
+ args->ar_quota = GFS2_QUOTA_ON;
+ break;
+ case Opt_suiddir:
args->ar_suiddir = 1;
-
- else if (!strcmp(o, "nosuiddir"))
+ break;
+ case Opt_nosuiddir:
args->ar_suiddir = 0;
-
- else if (!strcmp(o, "data")) {
- if (!v)
- goto need_value;
- if (!strcmp(v, "writeback"))
- args->ar_data = GFS2_DATA_WRITEBACK;
- else if (!strcmp(v, "ordered"))
- args->ar_data = GFS2_DATA_ORDERED;
- else {
- fs_info(sdp, "invalid value for data\n");
- error = -EINVAL;
- break;
- }
- }
-
- else {
- fs_info(sdp, "unknown option: %s\n", o);
- error = -EINVAL;
break;
+ case Opt_data_writeback:
+ args->ar_data = GFS2_DATA_WRITEBACK;
+ break;
+ case Opt_data_ordered:
+ args->ar_data = GFS2_DATA_ORDERED;
+ break;
+ case Opt_meta:
+ args->ar_meta = 1;
+ break;
+ case Opt_discard:
+ args->ar_discard = 1;
+ break;
+ case Opt_nodiscard:
+ args->ar_discard = 0;
+ break;
+ case Opt_err:
+ default:
+ fs_info(sdp, "invalid mount option: %s\n", o);
+ return -EINVAL;
}
}
- if (error)
- fs_info(sdp, "invalid mount option(s)\n");
-
- if (data != data_arg)
- kfree(data);
-
- return error;
-
-need_value:
- fs_info(sdp, "need value for option %s\n", o);
- return -EINVAL;
-
-cant_remount:
- fs_info(sdp, "can't remount with option %s\n", o);
- return -EINVAL;
+ return 0;
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff