io/io.h

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Copyright (c) 2003-2005 Silicon Graphics, Inc.
   4  * All Rights Reserved.
   5  */
   6
   7 #include "xfs.h"
   8 #include "libfrog/paths.h"
   9
  10 /*
  11  * Read/write patterns (default is always "forward")
  12  */
  13 #define IO_RANDOM       ( 0)
  14 #define IO_FORWARD      ( 1)
  15 #define IO_BACKWARD     (-1)
  16 #define IO_ONCE         ( 2)
  17
  18 /*
  19  * File descriptor options
  20  */
  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)
  33
  34 /*
  35  * Regular file I/O control
  36  */
  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 */
  43 } fileio_t;
  44
  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);
  50 /*
  51  * Memory mapped file regions
  52  */
  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 */
  60 } mmap_region_t;
  61
  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);
  67
  68 /*
  69  * Various xfs_io helper routines/globals
  70  */
  71
  72 extern off_t            filesize(void);
  73 extern int              openfile(char *, struct xfs_fsop_geom *, int, mode_t,
  74                                  struct fs_path *);
  75 extern int              addfile(char *, int , struct xfs_fsop_geom *, int,
  76                                 struct fs_path *);
  77 extern void             printxattr(uint, int, int, const char *, int, int);
  78
  79 extern unsigned int     recurse_all;
  80 extern unsigned int     recurse_dir;
  81
  82 extern void             *io_buffer;
  83 extern size_t           io_buffersize;
  84 extern int              vectors;
  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 *,
  88                                         int, int);
  89 extern void             dump_buffer(off_t, ssize_t);
  90
  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);
 121 extern void             madvise_init(void);
 122 extern void             mincore_init(void);
 123 extern void             fiemap_init(void);
 124
 125 #ifdef HAVE_COPY_FILE_RANGE
 126 extern void             copy_range_init(void);
 127 #else
 128 #define copy_range_init()       do { } while (0)
 129 #endif
 130
 131 extern void             sync_range_init(void);
 132
 133 #ifdef HAVE_READDIR
 134 extern void             readdir_init(void);
 135 #else
 136 #define readdir_init()          do { } while (0)
 137 #endif
 138
 139 extern void             reflink_init(void);
 140
 141 extern void             cowextsize_init(void);
 142
 143 #ifdef HAVE_GETFSMAP
 144 extern void             fsmap_init(void);
 145 #else
 146 # define fsmap_init()   do { } while (0)
 147 #endif
 148
 149 #ifdef HAVE_DEVMAPPER
 150 extern void             log_writes_init(void);
 151 #else
 152 #define log_writes_init()      do { } while (0)
 153 #endif
 154
 155 extern void             scrub_init(void);
 156 extern void             repair_init(void);
 157 extern void             crc32cselftest_init(void);
 158 extern void             bulkstat_init(void);