2 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
5 * This program is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU General Public License as
7 * published by the Free Software Foundation.
9 * This program is distributed in the hope that it would be useful,
10 * but WITHOUT ANY WARRANTY; without even the implied warranty of
11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 * GNU General Public License for more details.
14 * You should have received a copy of the GNU General Public License
15 * along with this program; if not, write the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 #include "libxfs_api_defs.h"
23 #include "platform_defs.h"
31 #include "radix-tree.h"
34 #include "xfs_types.h"
38 #include "xfs_shared.h"
39 #include "xfs_format.h"
40 #include "xfs_log_format.h"
41 #include "xfs_quota_defs.h"
42 #include "xfs_trans_resv.h"
45 /* CRC stuff, buffer API dependent on it */
46 extern uint32_t crc32_le(uint32_t crc
, unsigned char const *p
, size_t len
);
47 extern uint32_t crc32c_le(uint32_t crc
, unsigned char const *p
, size_t len
);
49 #define crc32(c,p,l) crc32_le((c),(unsigned char const *)(p),(l))
50 #define crc32c(c,p,l) crc32c_le((c),(unsigned char const *)(p),(l))
52 #include "xfs_cksum.h"
55 * This mirrors the kernel include for xfs_buf.h - it's implicitly included in
56 * every files via a similar include in the kernel xfs_linux.h.
58 #include "libxfs_io.h"
62 #include "xfs_mount.h"
63 #include "xfs_defer.h"
64 #include "xfs_errortag.h"
65 #include "xfs_da_format.h"
66 #include "xfs_da_btree.h"
68 #include "xfs_bmap_btree.h"
69 #include "xfs_alloc_btree.h"
70 #include "xfs_ialloc_btree.h"
71 #include "xfs_attr_sf.h"
72 #include "xfs_inode_fork.h"
73 #include "xfs_inode_buf.h"
74 #include "xfs_inode.h"
75 #include "xfs_alloc.h"
76 #include "xfs_btree.h"
77 #include "xfs_btree_trace.h"
79 #include "xfs_trace.h"
80 #include "xfs_trans.h"
81 #include "xfs_rmap_btree.h"
83 #include "xfs_refcount_btree.h"
84 #include "xfs_refcount.h"
87 #define ARRAY_SIZE(x) (sizeof(x) / sizeof((x)[0]))
90 #ifndef XFS_SUPER_MAGIC
91 #define XFS_SUPER_MAGIC 0x58465342
94 #define xfs_isset(a,i) ((a)[(i)/(sizeof(*(a))*NBBY)] & (1ULL<<((i)%(sizeof(*(a))*NBBY))))
97 * Argument structure for libxfs_init().
99 typedef struct libxfs_xinit
{
100 /* input parameters */
101 char *volname
; /* pathname of volume */
102 char *dname
; /* pathname of data "subvolume" */
103 char *logname
; /* pathname of log "subvolume" */
104 char *rtname
; /* pathname of realtime "subvolume" */
105 int isreadonly
; /* filesystem is only read in applic */
106 int isdirect
; /* we can attempt to use direct I/O */
107 int disfile
; /* data "subvolume" is a regular file */
108 int dcreat
; /* try to create data subvolume */
109 int lisfile
; /* log "subvolume" is a regular file */
110 int lcreat
; /* try to create log subvolume */
111 int risfile
; /* realtime "subvolume" is a reg file */
112 int rcreat
; /* try to create realtime subvolume */
113 int setblksize
; /* attempt to set device blksize */
114 int usebuflock
; /* lock xfs_buf_t's - for MT usage */
116 dev_t ddev
; /* device for data subvolume */
117 dev_t logdev
; /* device for log subvolume */
118 dev_t rtdev
; /* device for realtime subvolume */
119 long long dsize
; /* size of data subvolume (BBs) */
120 long long logBBsize
; /* size of log subvolume (BBs) */
121 /* (blocks allocated for use as
122 * log is stored in mount structure) */
123 long long logBBstart
; /* start block of log subvolume (BBs) */
124 long long rtsize
; /* size of realtime subvolume (BBs) */
125 int dbsize
; /* data subvolume device blksize */
126 int lbsize
; /* log subvolume device blksize */
127 int rtbsize
; /* realtime subvolume device blksize */
128 int dfd
; /* data subvolume file descriptor */
129 int logfd
; /* log subvolume file descriptor */
130 int rtfd
; /* realtime subvolume file descriptor */
131 int icache_flags
; /* cache init flags */
132 int bcache_flags
; /* cache init flags */
135 #define LIBXFS_EXIT_ON_FAILURE 0x0001 /* exit the program if a call fails */
136 #define LIBXFS_ISREADONLY 0x0002 /* disallow all mounted filesystems */
137 #define LIBXFS_ISINACTIVE 0x0004 /* allow mounted only if mounted ro */
138 #define LIBXFS_DANGEROUSLY 0x0008 /* repairing a device mounted ro */
139 #define LIBXFS_EXCLUSIVELY 0x0010 /* disallow other accesses (O_EXCL) */
140 #define LIBXFS_DIRECT 0x0020 /* can use direct I/O, not buffered */
142 extern char *progname
;
143 extern xfs_lsn_t libxfs_max_lsn
;
144 extern int libxfs_init (libxfs_init_t
*);
145 extern void libxfs_destroy (void);
146 extern int libxfs_device_to_fd (dev_t
);
147 extern dev_t
libxfs_device_open (char *, int, int, int);
148 extern void libxfs_device_close (dev_t
);
149 extern int libxfs_device_alignment (void);
150 extern void libxfs_report(FILE *);
151 extern void platform_findsizes(char *path
, int fd
, long long *sz
, int *bsz
);
152 extern int platform_nproc(void);
154 /* check or write log footer: specify device, log size in blocks & uuid */
155 typedef char *(libxfs_get_block_t
)(char *, int, void *);
158 * Helpers to clear the log to a particular log cycle.
160 #define XLOG_INIT_CYCLE 1
161 extern int libxfs_log_clear(struct xfs_buftarg
*, char *, xfs_daddr_t
,
162 uint
, uuid_t
*, int, int, int, int, bool);
163 extern int libxfs_log_header(char *, uuid_t
*, int, int, int, xfs_lsn_t
,
164 xfs_lsn_t
, libxfs_get_block_t
*, void *);
167 /* Shared utility routines */
169 extern int libxfs_alloc_file_space (struct xfs_inode
*, xfs_off_t
,
170 xfs_off_t
, int, int);
172 extern void libxfs_fs_repair_cmn_err(int, struct xfs_mount
*, char *, ...);
173 extern void libxfs_fs_cmn_err(int, struct xfs_mount
*, char *, ...);
175 /* XXX: this is messy and needs fixing */
176 #ifndef __LIBXFS_INTERNAL_XFS_H__
177 extern void cmn_err(int, char *, ...);
178 enum ce
{ CE_DEBUG
, CE_CONT
, CE_NOTE
, CE_WARN
, CE_ALERT
, CE_PANIC
};
182 extern int libxfs_nproc(void);
183 extern unsigned long libxfs_physmem(void); /* in kilobytes */
185 #include "xfs_ialloc.h"
187 #include "xfs_attr_leaf.h"
188 #include "xfs_attr_remote.h"
189 #include "xfs_trans_space.h"
191 #define XFS_INOBT_IS_FREE_DISK(rp,i) \
192 ((be64_to_cpu((rp)->ir_free) & XFS_INOBT_MASK(i)) != 0)
195 xfs_inobt_is_sparse_disk(
196 struct xfs_inobt_rec
*rp
,
202 holemask
= be16_to_cpu(rp
->ir_u
.sp
.ir_holemask
);
203 spshift
= offset
/ XFS_INODES_PER_HOLEMASK_BIT
;
204 if ((1 << spshift
) & holemask
)
211 libxfs_bmbt_disk_get_all(
212 struct xfs_bmbt_rec
*rec
,
213 struct xfs_bmbt_irec
*irec
)
215 uint64_t l0
= get_unaligned_be64(&rec
->l0
);
216 uint64_t l1
= get_unaligned_be64(&rec
->l1
);
218 irec
->br_startoff
= (l0
& xfs_mask64lo(64 - BMBT_EXNTFLAG_BITLEN
)) >> 9;
219 irec
->br_startblock
= ((l0
& xfs_mask64lo(9)) << 43) | (l1
>> 21);
220 irec
->br_blockcount
= l1
& xfs_mask64lo(21);
221 if (l0
>> (64 - BMBT_EXNTFLAG_BITLEN
))
222 irec
->br_state
= XFS_EXT_UNWRITTEN
;
224 irec
->br_state
= XFS_EXT_NORM
;
227 /* XXX: this is clearly a bug - a shared header needs to export this */
229 int libxfs_rtfree_extent(struct xfs_trans
*, xfs_rtblock_t
, xfs_extlen_t
);
231 /* XXX: need parts of xfs_attr.h in userspace */
232 #define LIBXFS_ATTR_ROOT 0x0002 /* use attrs in root namespace */
233 #define LIBXFS_ATTR_SECURE 0x0008 /* use attrs in security namespace */
234 #define LIBXFS_ATTR_CREATE 0x0010 /* create, but fail if attr exists */
235 #define LIBXFS_ATTR_REPLACE 0x0020 /* set, but fail if attr not exists */
237 int xfs_attr_remove(struct xfs_inode
*dp
, const unsigned char *name
, int flags
);
238 int xfs_attr_set(struct xfs_inode
*dp
, const unsigned char *name
,
239 unsigned char *value
, int valuelen
, int flags
);
241 #endif /* __LIBXFS_H__ */