4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License version 2 only,
8 * as published by the Free Software Foundation.
10 * This program is distributed in the hope that it will be useful, but
11 * WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * General Public License version 2 for more details (a copy is included
14 * in the LICENSE file that accompanied this code).
16 * You should have received a copy of the GNU General Public License
17 * version 2 along with this program; If not, see
18 * http://www.sun.com/software/products/lustre/docs/GPLv2.pdf
20 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
21 * CA 95054 USA or visit www.sun.com if you need additional information or
27 * Copyright (c) 2008, 2010, Oracle and/or its affiliates. All rights reserved.
28 * Use is subject to license terms.
30 * Copyright (c) 2012, 2014, Intel Corporation.
33 * This file is part of Lustre, http://www.lustre.org/
34 * Lustre is a trademark of Sun Microsystems, Inc.
37 #ifndef _MOUNT_UTILS_H_
38 #define _MOUNT_UTILS_H_
40 /* Some of the userland headers for libzfs also require
41 * zfs/spl linux kernel headers, but including these pull
42 * in linux kernel headers which conflicts with the
43 * userland version of libcfs. So the solution is tell the
44 * libzfs user land headrs that the zfs/spl kernel headers
45 * are already included even if this is not the case.
58 #include <sys/types.h>
61 #include <lustre_disk.h>
62 #include <lustre_param.h>
64 extern char *progname;
68 #define vprint(fmt, arg...) if (verbose > 0) printf(fmt, ##arg)
69 #define verrprint(fmt, arg...) if (verbose >= 0) fprintf(stderr, fmt, ##arg)
72 #define MO_IS_LOOP 0x01
73 #define MO_FORCEFORMAT 0x02
74 #define MO_FAILOVER 0x04
75 #define MO_DRYRUN 0x08
77 #define MO_NOHOSTID_CHECK 0x20
79 #define MAX_LOOP_DEVICES 16
80 #define INDEX_UNASSIGNED 0xFFFF
82 /* used to describe the options to format the lustre disk, not persistent */
84 struct lustre_disk_data mo_ldd; /* to be written in MOUNT_DATA_FILE */
85 char mo_device[128]; /* disk device name */
86 char **mo_pool_vdevs; /* list of pool vdevs */
87 char mo_loopdev[128]; /* in case a loop dev is needed */
88 char mo_mkfsopts[512]; /* options to the backing-store mkfs */
89 char *mo_mountopts; /* mount options for backing fs */
90 __u64 mo_device_kb; /* in KB */
96 /* used to describe the options to mount the lustre disk */
98 struct lustre_disk_data mo_ldd;
99 char *mo_orig_options;
100 char *mo_usource; /* user-specified mount device */
101 char *mo_source; /* our mount device name */
102 char mo_target[PATH_MAX]; /* mount directory */
108 int mo_md_stripe_cache_size;
112 int get_mountdata(char *, struct lustre_disk_data *);
114 #define MT_STR(data) mt_str((data)->ldd_mount_type)
117 #define IS_MDT(data) ((data)->ldd_flags & LDD_F_SV_TYPE_MDT)
119 #define IS_OST(data) ((data)->ldd_flags & LDD_F_SV_TYPE_OST)
121 #define IS_MGS(data) ((data)->ldd_flags & LDD_F_SV_TYPE_MGS)
123 /* mkfs/mount helper functions */
125 int run_command_err(char *cmd, int cmdsz, char *error_msg);
126 int run_command(char *cmd, int cmdsz);
127 int add_param(char *buf, char *key, char *val);
128 int append_param(char *buf, char *key, char *val, char sep);
129 int get_param(char *buf, char *key, char **val);
130 char *strscat(char *dst, char *src, int buflen);
131 char *strscpy(char *dst, char *src, int buflen);
132 int check_mtab_entry(char *spec1, char *spec2, char *mntpt, char *type);
133 int update_mtab_entry(char *spec, char *mtpt, char *type, char *opts,
134 int flags, int freq, int pass);
135 int update_utab_entry(struct mount_opts *mop);
136 int check_mountfsoptions(char *mountopts, char *wanted_mountopts);
137 void trim_mountfsoptions(char *s);
138 __u64 get_device_size(char* device);
140 /* loopback helper functions */
141 int file_create(char *path, __u64 size);
142 int loop_format(struct mkfs_opts *mop);
143 int loop_setup(struct mkfs_opts *mop);
144 int loop_cleanup(struct mkfs_opts *mop);
146 /* generic target support */
147 int osd_write_ldd(struct mkfs_opts *mop);
148 int osd_read_ldd(char *dev, struct lustre_disk_data *ldd);
149 int osd_is_lustre(char *dev, unsigned *mount_type);
150 int osd_make_lustre(struct mkfs_opts *mop);
151 int osd_prepare_lustre(struct mkfs_opts *mop,
152 char *wanted_mountopts, size_t len);
153 int osd_fix_mountopts(struct mkfs_opts *mop, char *mountopts, size_t len);
154 int osd_tune_lustre(char *dev, struct mount_opts *mop);
155 int osd_label_lustre(struct mount_opts *mop);
156 int osd_enable_quota(struct mkfs_opts *mop);
160 struct module_backfs_ops {
163 int (*read_ldd)(char *ds, struct lustre_disk_data *ldd);
164 int (*write_ldd)(struct mkfs_opts *mop);
165 int (*is_lustre)(char *dev, enum ldd_mount_type *mount_type);
166 int (*make_lustre)(struct mkfs_opts *mop);
167 int (*prepare_lustre)(struct mkfs_opts *mop,
168 char *wanted_mountopts, size_t len);
169 int (*fix_mountopts)(struct mkfs_opts *mop,
170 char *mountopts, size_t len);
171 int (*tune_lustre)(char *dev, struct mount_opts *mop);
172 int (*label_lustre)(struct mount_opts *mop);
173 int (*enable_quota)(struct mkfs_opts *mop);
177 struct module_backfs_ops *load_backfs_module(enum ldd_mount_type mount_type);
178 void unload_backfs_ops(struct module_backfs_ops *ops);