]>
git.ipfire.org Git - thirdparty/xfsprogs-dev.git/blob - io/io.h
2 * Copyright (c) 2003-2005 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
20 * Read/write patterns (default is always "forward")
22 #define IO_RANDOM ( 0)
23 #define IO_FORWARD ( 1)
24 #define IO_BACKWARD (-1)
27 * File descriptor options
29 #define IO_READONLY (1<<0)
30 #define IO_DIRECT (1<<1)
31 #define IO_REALTIME (1<<2)
32 #define IO_APPEND (1<<3)
33 #define IO_OSYNC (1<<4)
34 #define IO_CREAT (1<<5)
35 #define IO_TRUNC (1<<6)
36 #define IO_FOREIGN (1<<7)
37 #define IO_NONBLOCK (1<<8)
40 * Regular file I/O control
42 typedef struct fileio
{
43 int fd
; /* open file descriptor */
44 int flags
; /* flags describing file state */
45 char *name
; /* file name at time of open */
46 xfs_fsop_geom_t geom
; /* XFS filesystem geometry */
49 extern fileio_t
*filetable
; /* open file table */
50 extern int filecount
; /* number of open files */
51 extern fileio_t
*file
; /* active file in file table */
52 extern int filelist_f(void);
55 * Memory mapped file regions
57 typedef struct mmap_region
{
58 void *addr
; /* address of start of mapping */
59 size_t length
; /* length of mapping */
60 off64_t offset
; /* start offset into backing file */
61 int prot
; /* protection mode of the mapping */
62 char *name
; /* name of backing file */
65 extern mmap_region_t
*maptable
; /* mmap'd region array */
66 extern int mapcount
; /* #entries in the mapping table */
67 extern mmap_region_t
*mapping
; /* active mapping table entry */
68 extern int maplist_f(void);
69 extern void *check_mapping_range(mmap_region_t
*, off64_t
, size_t, int);
72 * Various xfs_io helper routines/globals
75 extern off64_t
filesize(void);
76 extern int openfile(char *, xfs_fsop_geom_t
*, int, mode_t
);
77 extern int addfile(char *, int , xfs_fsop_geom_t
*, int);
78 extern void printxattr(uint
, int, int, const char *, int, int);
80 extern unsigned int recurse_all
;
81 extern unsigned int recurse_dir
;
84 extern size_t buffersize
;
86 extern struct iovec
*iov
;
87 extern int alloc_buffer(size_t, int, unsigned int);
88 extern int read_buffer(int, off64_t
, long long, long long *,
90 extern void dump_buffer(off64_t
, ssize_t
);
92 extern void attr_init(void);
93 extern void bmap_init(void);
94 extern void file_init(void);
95 extern void freeze_init(void);
96 extern void fsync_init(void);
97 extern void getrusage_init(void);
98 extern void help_init(void);
99 extern void imap_init(void);
100 extern void inject_init(void);
101 extern void mmap_init(void);
102 extern void open_init(void);
103 extern void parent_init(void);
104 extern void pread_init(void);
105 extern void prealloc_init(void);
106 extern void pwrite_init(void);
107 extern void quit_init(void);
108 extern void shutdown_init(void);
109 extern void truncate_init(void);
112 extern void fadvise_init(void);
114 #define fadvise_init() do { } while (0)
118 extern void resblks_init(void);
120 #define resblks_init() do { } while (0)
124 extern void sendfile_init(void);
126 #define sendfile_init() do { } while (0)
130 extern void madvise_init(void);
132 #define madvise_init() do { } while (0)
136 extern void mincore_init(void);
138 #define mincore_init() do { } while (0)
142 extern void fiemap_init(void);
144 #define fiemap_init() do { } while (0)
147 #ifdef HAVE_SYNC_FILE_RANGE
148 extern void sync_range_init(void);
150 #define sync_range_init() do { } while (0)