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git.ipfire.org Git - thirdparty/xfsprogs-dev.git/blob - io/io.h
56e6159b0df77266ed6512dd5d8d0742f3b0e00d
1 // SPDX-License-Identifier: GPL-2.0
3 * Copyright (c) 2003-2005 Silicon Graphics, Inc.
8 #include "libfrog/paths.h"
11 * Read/write patterns (default is always "forward")
13 #define IO_RANDOM ( 0)
14 #define IO_FORWARD ( 1)
15 #define IO_BACKWARD (-1)
19 * File descriptor options
21 #define IO_READONLY (1<<0)
22 #define IO_DIRECT (1<<1)
23 #define IO_REALTIME (1<<2)
24 #define IO_APPEND (1<<3)
25 #define IO_OSYNC (1<<4)
26 #define IO_CREAT (1<<5)
27 #define IO_TRUNC (1<<6)
28 #define IO_FOREIGN (1<<7)
29 #define IO_NONBLOCK (1<<8)
30 #define IO_TMPFILE (1<<9)
31 #define IO_PATH (1<<10)
32 #define IO_NOFOLLOW (1<<11)
35 * Regular file I/O control
37 typedef struct fileio
{
38 int fd
; /* open file descriptor */
39 int flags
; /* flags describing file state */
40 char *name
; /* file name at time of open */
41 struct xfs_fsop_geom geom
; /* XFS filesystem geometry */
42 struct fs_path fs_path
; /* XFS path information */
45 extern fileio_t
*filetable
; /* open file table */
46 extern int filecount
; /* number of open files */
47 extern fileio_t
*file
; /* active file in file table */
48 extern int filelist_f(void);
49 extern int stat_f(int argc
, char **argv
);
51 * Memory mapped file regions
53 typedef struct mmap_region
{
54 void *addr
; /* address of start of mapping */
55 size_t length
; /* length of mapping */
56 off_t offset
; /* start offset into backing file */
57 int prot
; /* protection mode of the mapping */
58 int flags
; /* MAP_* flags passed to mmap() */
59 char *name
; /* name of backing file */
62 extern mmap_region_t
*maptable
; /* mmap'd region array */
63 extern int mapcount
; /* #entries in the mapping table */
64 extern mmap_region_t
*mapping
; /* active mapping table entry */
65 extern int maplist_f(void);
66 extern void *check_mapping_range(mmap_region_t
*, off_t
, size_t, int);
69 * Various xfs_io helper routines/globals
72 extern off_t
filesize(void);
73 extern int openfile(char *, struct xfs_fsop_geom
*, int, mode_t
,
75 extern int addfile(char *, int , struct xfs_fsop_geom
*, int,
77 extern void printxattr(uint
, int, int, const char *, int, int);
79 extern unsigned int recurse_all
;
80 extern unsigned int recurse_dir
;
82 extern void *io_buffer
;
83 extern size_t io_buffersize
;
85 extern struct iovec
*iov
;
86 extern int alloc_buffer(size_t, int, unsigned int);
87 extern int read_buffer(int, off_t
, long long, long long *,
89 extern void dump_buffer(off_t
, ssize_t
);
91 extern void attr_init(void);
92 extern void bmap_init(void);
93 extern void encrypt_init(void);
94 extern void file_init(void);
95 extern void flink_init(void);
96 extern void freeze_init(void);
97 extern void fsuuid_init(void);
98 extern void fsync_init(void);
99 extern void getrusage_init(void);
100 extern void help_init(void);
101 extern void imap_init(void);
102 extern void inject_init(void);
103 extern void label_init(void);
104 extern void mmap_init(void);
105 extern void open_init(void);
106 extern void parent_init(void);
107 extern void pread_init(void);
108 extern void prealloc_init(void);
109 extern void pwrite_init(void);
110 extern void quit_init(void);
111 extern void resblks_init(void);
112 extern void seek_init(void);
113 extern void shutdown_init(void);
114 extern void stat_init(void);
115 extern void swapext_init(void);
116 extern void sync_init(void);
117 extern void truncate_init(void);
118 extern void utimes_init(void);
119 extern void fadvise_init(void);
120 extern void sendfile_init(void);
123 extern void madvise_init(void);
125 #define madvise_init() do { } while (0)
129 extern void mincore_init(void);
131 #define mincore_init() do { } while (0)
135 extern void fiemap_init(void);
137 #define fiemap_init() do { } while (0)
140 #ifdef HAVE_COPY_FILE_RANGE
141 extern void copy_range_init(void);
143 #define copy_range_init() do { } while (0)
146 #ifdef HAVE_SYNC_FILE_RANGE
147 extern void sync_range_init(void);
149 #define sync_range_init() do { } while (0)
153 extern void readdir_init(void);
155 #define readdir_init() do { } while (0)
158 extern void reflink_init(void);
160 extern void cowextsize_init(void);
163 extern void fsmap_init(void);
165 # define fsmap_init() do { } while (0)
168 #ifdef HAVE_DEVMAPPER
169 extern void log_writes_init(void);
171 #define log_writes_init() do { } while (0)
174 extern void scrub_init(void);
175 extern void repair_init(void);
176 extern void crc32cselftest_init(void);
177 extern void bulkstat_init(void);