usr/src/uts/common/sys/statvfs.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
  23 /*        All Rights Reserved   */
  24
  25 /*
  26  * Copyright 2014 Garrett D'Amore <garrett@damore.org>
  27  *
  28  * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
  29  * Use is subject to license terms.
  30  */
  31
  32 #ifndef _SYS_STATVFS_H
  33 #define _SYS_STATVFS_H
  34
  35 #include <sys/feature_tests.h>
  36 #include <sys/types.h>
  37
  38 #ifdef  __cplusplus
  39 extern "C" {
  40 #endif
  41
  42 /*
  43  * Structure returned by statvfs(2).
  44  */
  45
  46 #define _FSTYPSZ        16
  47 #if !defined(_XPG4_2) || defined(__EXTENSIONS__)
  48 #ifndef FSTYPSZ
  49 #define FSTYPSZ _FSTYPSZ
  50 #endif
  51 #endif /* !defined(_XPG4_2) || defined(__EXTENSIONS__) */
  52
  53 typedef struct statvfs {
  54         unsigned long   f_bsize;        /* fundamental file system block size */
  55         unsigned long   f_frsize;       /* fragment size */
  56         fsblkcnt_t      f_blocks;       /* total blocks of f_frsize on fs */
  57         fsblkcnt_t      f_bfree;        /* total free blocks of f_frsize */
  58         fsblkcnt_t      f_bavail;       /* free blocks avail to non-superuser */
  59         fsfilcnt_t      f_files;        /* total file nodes (inodes) */
  60         fsfilcnt_t      f_ffree;        /* total free file nodes */
  61         fsfilcnt_t      f_favail;       /* free nodes avail to non-superuser */
  62         unsigned long   f_fsid;         /* file system id (dev for now) */
  63         char            f_basetype[_FSTYPSZ];   /* target fs type name, */
  64                                                 /* null-terminated */
  65         unsigned long   f_flag;         /* bit-mask of flags */
  66         unsigned long   f_namemax;      /* maximum file name length */
  67         char            f_fstr[32];     /* filesystem-specific string */
  68 #if !defined(_LP64)
  69         unsigned long   f_filler[16];   /* reserved for future expansion */
  70 #endif
  71 } statvfs_t;
  72
  73 #if defined(_SYSCALL32)
  74
  75 /* Kernel view of user ILP32 statvfs structure */
  76
  77 typedef struct statvfs32 {
  78         uint32_t        f_bsize;        /* fundamental file system block size */
  79         uint32_t        f_frsize;       /* fragment size */
  80         fsblkcnt32_t    f_blocks;       /* total blocks of f_frsize on fs */
  81         fsblkcnt32_t    f_bfree;        /* total free blocks of f_frsize */
  82         fsblkcnt32_t    f_bavail;       /* free blocks avail to non-superuser */
  83         fsfilcnt32_t    f_files;        /* total file nodes (inodes) */
  84         fsfilcnt32_t    f_ffree;        /* total free file nodes */
  85         fsfilcnt32_t    f_favail;       /* free nodes avail to non-superuser */
  86         uint32_t        f_fsid;         /* file system id (dev for now) */
  87         char            f_basetype[_FSTYPSZ];   /* target fs type name, */
  88                                                 /* null-terminated */
  89         uint32_t        f_flag;         /* bit-mask of flags */
  90         uint32_t        f_namemax;      /* maximum file name length */
  91         char            f_fstr[32];     /* filesystem-specific string */
  92         uint32_t        f_filler[16];   /* reserved for future expansion */
  93 } statvfs32_t;
  94
  95 #endif  /* _SYSCALL32 */
  96
  97 /* transitional large file interface version */
  98 #if defined(_LARGEFILE64_SOURCE)
  99 typedef struct statvfs64 {
 100         unsigned long   f_bsize;        /* preferred file system block size */
 101         unsigned long   f_frsize;       /* fundamental file system block size */
 102         fsblkcnt64_t    f_blocks;       /* total blocks of f_frsize */
 103         fsblkcnt64_t    f_bfree;        /* total free blocks of f_frsize */
 104         fsblkcnt64_t    f_bavail;       /* free blocks avail to non-superuser */
 105         fsfilcnt64_t    f_files;        /* total # of file nodes (inodes) */
 106         fsfilcnt64_t    f_ffree;        /* total # of free file nodes */
 107         fsfilcnt64_t    f_favail;       /* free nodes avail to non-superuser */
 108         unsigned long   f_fsid;         /* file system id (dev for now) */
 109         char            f_basetype[FSTYPSZ];    /* target fs type name, */
 110                                                 /* null-terminated */
 111         unsigned long   f_flag;         /* bit-mask of flags */
 112         unsigned long   f_namemax;      /* maximum file name length */
 113         char            f_fstr[32];     /* filesystem-specific string */
 114 #if !defined(_LP64)
 115         unsigned long   f_filler[16];   /* reserved for future expansion */
 116 #endif  /* _LP64 */
 117 } statvfs64_t;
 118 #endif
 119
 120 #if defined(_SYSCALL32)
 121
 122 /* Kernel view of user ILP32 statvfs64 structure */
 123
 124 #if _LONG_LONG_ALIGNMENT == 8 && _LONG_LONG_ALIGNMENT_32 == 4
 125 #pragma pack(4)
 126 #endif
 127
 128 typedef struct statvfs64_32 {
 129         uint32_t        f_bsize;        /* preferred file system block size */
 130         uint32_t        f_frsize;       /* fundamental file system block size */
 131         fsblkcnt64_t    f_blocks;       /* total blocks of f_frsize */
 132         fsblkcnt64_t    f_bfree;        /* total free blocks of f_frsize */
 133         fsblkcnt64_t    f_bavail;       /* free blocks avail to non-superuser */
 134         fsfilcnt64_t    f_files;        /* total # of file nodes (inodes) */
 135         fsfilcnt64_t    f_ffree;        /* total # of free file nodes */
 136         fsfilcnt64_t    f_favail;       /* free nodes avail to non-superuser */
 137         uint32_t        f_fsid;         /* file system id (dev for now) */
 138         char            f_basetype[FSTYPSZ];    /* target fs type name, */
 139                                                 /* null-terminated */
 140         uint32_t        f_flag;         /* bit-mask of flags */
 141         uint32_t        f_namemax;      /* maximum file name length */
 142         char            f_fstr[32];     /* filesystem-specific string */
 143         uint32_t        f_filler[16];   /* reserved for future expansion */
 144 } statvfs64_32_t;
 145
 146 #if _LONG_LONG_ALIGNMENT == 8 && _LONG_LONG_ALIGNMENT_32 == 4
 147 #pragma pack()
 148 #endif
 149
 150 #endif  /* _SYSCALL32 */
 151
 152 /*
 153  * Flag definitions.
 154  */
 155
 156 #define ST_RDONLY       0x01    /* read-only file system */
 157 #define ST_NOSUID       0x02    /* does not support setuid/setgid semantics */
 158 #define ST_NOTRUNC      0x04    /* does not truncate long file names */
 159
 160 #if !defined(_KERNEL)
 161 /*
 162  * large file compilation environment setup
 163  */
 164 #if !defined(_LP64) && _FILE_OFFSET_BITS == 64
 165 #ifdef __PRAGMA_REDEFINE_EXTNAME
 166 #pragma redefine_extname        statvfs         statvfs64
 167 #pragma redefine_extname        fstatvfs        fstatvfs64
 168 #else
 169 #define statvfs_t               statvfs64_t
 170 #define statvfs                 statvfs64
 171 #define fstatvfs                fstatvfs64
 172 #endif
 173 #endif  /* !_LP64 && _FILE_OFFSET_BITS == 64 */
 174
 175 #if defined(_LP64) && defined(_LARGEFILE64_SOURCE)
 176 /*
 177  * In the LP64 compilation environment, map large file interfaces
 178  * back to native versions where possible.
 179  */
 180 #ifdef __PRAGMA_REDEFINE_EXTNAME
 181 #pragma redefine_extname        statvfs64       statvfs
 182 #pragma redefine_extname        fstatvfs64      fstatvfs
 183 #else
 184 #define statvfs64_t             statvfs_t
 185 #define statvfs64               statvfs
 186 #define fstatvfs64              fstatvfs
 187 #endif
 188 #endif  /* _LP64 && _LARGEFILE64_SOURCE */
 189
 190 int statvfs(const char *_RESTRICT_KYWD, statvfs_t *_RESTRICT_KYWD);
 191 int fstatvfs(int, statvfs_t *);
 192
 193 /* transitional large file interface versions */
 194 #if     defined(_LARGEFILE64_SOURCE) && !((_FILE_OFFSET_BITS == 64) && \
 195             !defined(__PRAGMA_REDEFINE_EXTNAME))
 196 int statvfs64(const char *_RESTRICT_KYWD, statvfs64_t *_RESTRICT_KYWD);
 197 int fstatvfs64(int, statvfs64_t *);
 198 #endif  /* _LARGEFILE64_SOURCE... */
 199 #endif  /* !defined(_KERNEL) */
 200
 201 #ifdef  __cplusplus
 202 }
 203 #endif
 204
 205 #endif  /* _SYS_STATVFS_H */