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7d308590ae
lm_interface.h has a few out of the tree clients such as GFS1 and userland tools. Right now, these clients keeps a copy of the file in their build tree that can go out of sync. Move lm_interface.h to include/linux, export it to userland and clean up fs/gfs2 to use the new location. Signed-off-by: Fabio M. Di Nitto <fabbione@ubuntu.com> Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
215 lines
4.7 KiB
C
215 lines
4.7 KiB
C
/*
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* Copyright (C) Sistina Software, Inc. 1997-2003 All rights reserved.
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* Copyright (C) 2004-2006 Red Hat, Inc. All rights reserved.
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*
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* This copyrighted material is made available to anyone wishing to use,
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* modify, copy, or redistribute it subject to the terms and conditions
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* of the GNU General Public License version 2.
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*/
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#include <linux/sched.h>
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#include <linux/slab.h>
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#include <linux/spinlock.h>
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#include <linux/completion.h>
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#include <linux/buffer_head.h>
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#include <linux/gfs2_ondisk.h>
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#include <linux/lm_interface.h>
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#include "gfs2.h"
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#include "incore.h"
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#include "mount.h"
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#include "sys.h"
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#include "util.h"
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/**
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* gfs2_mount_args - Parse mount options
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* @sdp:
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* @data:
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*
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* Return: errno
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*/
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int gfs2_mount_args(struct gfs2_sbd *sdp, char *data_arg, int remount)
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{
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struct gfs2_args *args = &sdp->sd_args;
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char *data = data_arg;
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char *options, *o, *v;
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int error = 0;
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if (!remount) {
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/* If someone preloaded options, use those instead */
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spin_lock(&gfs2_sys_margs_lock);
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if (gfs2_sys_margs) {
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data = gfs2_sys_margs;
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gfs2_sys_margs = NULL;
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}
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spin_unlock(&gfs2_sys_margs_lock);
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/* Set some defaults */
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args->ar_num_glockd = GFS2_GLOCKD_DEFAULT;
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args->ar_quota = GFS2_QUOTA_DEFAULT;
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args->ar_data = GFS2_DATA_DEFAULT;
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}
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/* Split the options into tokens with the "," character and
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process them */
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for (options = data; (o = strsep(&options, ",")); ) {
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if (!*o)
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continue;
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v = strchr(o, '=');
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if (v)
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*v++ = 0;
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if (!strcmp(o, "lockproto")) {
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if (!v)
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goto need_value;
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if (remount && strcmp(v, args->ar_lockproto))
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goto cant_remount;
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strncpy(args->ar_lockproto, v, GFS2_LOCKNAME_LEN);
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args->ar_lockproto[GFS2_LOCKNAME_LEN - 1] = 0;
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}
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else if (!strcmp(o, "locktable")) {
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if (!v)
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goto need_value;
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if (remount && strcmp(v, args->ar_locktable))
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goto cant_remount;
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strncpy(args->ar_locktable, v, GFS2_LOCKNAME_LEN);
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args->ar_locktable[GFS2_LOCKNAME_LEN - 1] = 0;
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}
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else if (!strcmp(o, "hostdata")) {
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if (!v)
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goto need_value;
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if (remount && strcmp(v, args->ar_hostdata))
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goto cant_remount;
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strncpy(args->ar_hostdata, v, GFS2_LOCKNAME_LEN);
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args->ar_hostdata[GFS2_LOCKNAME_LEN - 1] = 0;
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}
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else if (!strcmp(o, "spectator")) {
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if (remount && !args->ar_spectator)
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goto cant_remount;
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args->ar_spectator = 1;
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sdp->sd_vfs->s_flags |= MS_RDONLY;
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}
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else if (!strcmp(o, "ignore_local_fs")) {
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if (remount && !args->ar_ignore_local_fs)
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goto cant_remount;
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args->ar_ignore_local_fs = 1;
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}
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else if (!strcmp(o, "localflocks")) {
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if (remount && !args->ar_localflocks)
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goto cant_remount;
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args->ar_localflocks = 1;
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}
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else if (!strcmp(o, "localcaching")) {
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if (remount && !args->ar_localcaching)
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goto cant_remount;
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args->ar_localcaching = 1;
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}
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else if (!strcmp(o, "debug"))
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args->ar_debug = 1;
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else if (!strcmp(o, "nodebug"))
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args->ar_debug = 0;
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else if (!strcmp(o, "upgrade")) {
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if (remount && !args->ar_upgrade)
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goto cant_remount;
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args->ar_upgrade = 1;
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}
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else if (!strcmp(o, "num_glockd")) {
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unsigned int x;
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if (!v)
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goto need_value;
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sscanf(v, "%u", &x);
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if (remount && x != args->ar_num_glockd)
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goto cant_remount;
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if (!x || x > GFS2_GLOCKD_MAX) {
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fs_info(sdp, "0 < num_glockd <= %u (not %u)\n",
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GFS2_GLOCKD_MAX, x);
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error = -EINVAL;
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break;
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}
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args->ar_num_glockd = x;
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}
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else if (!strcmp(o, "acl")) {
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args->ar_posix_acl = 1;
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sdp->sd_vfs->s_flags |= MS_POSIXACL;
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}
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else if (!strcmp(o, "noacl")) {
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args->ar_posix_acl = 0;
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sdp->sd_vfs->s_flags &= ~MS_POSIXACL;
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}
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else if (!strcmp(o, "quota")) {
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if (!v)
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goto need_value;
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if (!strcmp(v, "off"))
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args->ar_quota = GFS2_QUOTA_OFF;
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else if (!strcmp(v, "account"))
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args->ar_quota = GFS2_QUOTA_ACCOUNT;
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else if (!strcmp(v, "on"))
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args->ar_quota = GFS2_QUOTA_ON;
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else {
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fs_info(sdp, "invalid value for quota\n");
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error = -EINVAL;
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break;
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}
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}
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else if (!strcmp(o, "suiddir"))
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args->ar_suiddir = 1;
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else if (!strcmp(o, "nosuiddir"))
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args->ar_suiddir = 0;
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else if (!strcmp(o, "data")) {
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if (!v)
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goto need_value;
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if (!strcmp(v, "writeback"))
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args->ar_data = GFS2_DATA_WRITEBACK;
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else if (!strcmp(v, "ordered"))
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args->ar_data = GFS2_DATA_ORDERED;
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else {
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fs_info(sdp, "invalid value for data\n");
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error = -EINVAL;
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break;
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}
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}
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else {
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fs_info(sdp, "unknown option: %s\n", o);
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error = -EINVAL;
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break;
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}
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}
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if (error)
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fs_info(sdp, "invalid mount option(s)\n");
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if (data != data_arg)
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kfree(data);
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return error;
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need_value:
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fs_info(sdp, "need value for option %s\n", o);
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return -EINVAL;
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cant_remount:
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fs_info(sdp, "can't remount with option %s\n", o);
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return -EINVAL;
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}
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