1 /* 2 * Copyright (C) 2008 The Android Open Source Project 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in 12 * the documentation and/or other materials provided with the 13 * distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 16 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 17 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS 18 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE 19 * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, 21 * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS 22 * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED 23 * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, 24 * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT 25 * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 */ 28 29 #ifndef _SYS_VFS_H_ 30 #define _SYS_VFS_H_ 31 32 #include <stdint.h> 33 #include <sys/cdefs.h> 34 #include <sys/types.h> 35 36 __BEGIN_DECLS 37 38 /* The kernel's __kernel_fsid_t has a 'val' member but glibc uses '__val'. */ 39 typedef struct { int __val[2]; } __fsid_t; 40 typedef __fsid_t fsid_t; 41 42 #if defined(__aarch64__) || defined(__x86_64__) 43 #define __STATFS64_BODY \ 44 uint64_t f_type; \ 45 uint64_t f_bsize; \ 46 uint64_t f_blocks; \ 47 uint64_t f_bfree; \ 48 uint64_t f_bavail; \ 49 uint64_t f_files; \ 50 uint64_t f_ffree; \ 51 fsid_t f_fsid; \ 52 uint64_t f_namelen; \ 53 uint64_t f_frsize; \ 54 uint64_t f_flags; \ 55 uint64_t f_spare[4]; \ 56 57 #elif defined(__mips__) && defined(__LP64__) 58 /* 64-bit MIPS. */ 59 #define __STATFS64_BODY \ 60 uint64_t f_type; \ 61 uint64_t f_bsize; \ 62 uint64_t f_frsize; /* Fragment size - unsupported. */ \ 63 uint64_t f_blocks; \ 64 uint64_t f_bfree; \ 65 uint64_t f_files; \ 66 uint64_t f_ffree; \ 67 uint64_t f_bavail; \ 68 fsid_t f_fsid; \ 69 uint64_t f_namelen; \ 70 uint64_t f_flags; \ 71 uint64_t f_spare[5]; \ 72 73 #elif defined(__mips__) 74 /* 32-bit MIPS (corresponds to the kernel's statfs64 type). */ 75 #define __STATFS64_BODY \ 76 uint32_t f_type; \ 77 uint32_t f_bsize; \ 78 uint32_t f_frsize; \ 79 uint32_t __pad; \ 80 uint64_t f_blocks; \ 81 uint64_t f_bfree; \ 82 uint64_t f_files; \ 83 uint64_t f_ffree; \ 84 uint64_t f_bavail; \ 85 fsid_t f_fsid; \ 86 uint32_t f_namelen; \ 87 uint32_t f_flags; \ 88 uint32_t f_spare[5]; \ 89 90 #else 91 /* 32-bit ARM or x86 (corresponds to the kernel's statfs64 type). */ 92 #define __STATFS64_BODY \ 93 uint32_t f_type; \ 94 uint32_t f_bsize; \ 95 uint64_t f_blocks; \ 96 uint64_t f_bfree; \ 97 uint64_t f_bavail; \ 98 uint64_t f_files; \ 99 uint64_t f_ffree; \ 100 fsid_t f_fsid; \ 101 uint32_t f_namelen; \ 102 uint32_t f_frsize; \ 103 uint32_t f_flags; \ 104 uint32_t f_spare[4]; \ 105 106 #endif 107 108 struct statfs { __STATFS64_BODY }; 109 struct statfs64 { __STATFS64_BODY }; 110 111 #undef __STATFS64_BODY 112 113 /* Declare that we have the f_namelen, f_frsize, and f_flags fields. */ 114 #define _STATFS_F_NAMELEN 115 #define _STATFS_F_FRSIZE 116 #define _STATFS_F_FLAGS 117 118 /* Pull in the kernel magic numbers. */ 119 #include <linux/magic.h> 120 /* Add in ones that we had historically that aren't in the uapi header. */ 121 #define BEFS_SUPER_MAGIC 0x42465331 122 #define BFS_MAGIC 0x1BADFACE 123 #define CIFS_MAGIC_NUMBER 0xFF534D42 124 #define COH_SUPER_MAGIC 0x012FF7B7 125 #define DEVFS_SUPER_MAGIC 0x1373 126 #define EXT_SUPER_MAGIC 0x137D 127 #define EXT2_OLD_SUPER_MAGIC 0xEF51 128 #define HFS_SUPER_MAGIC 0x4244 129 #define JFS_SUPER_MAGIC 0x3153464a 130 #define NTFS_SB_MAGIC 0x5346544e 131 #define ROMFS_MAGIC 0x7275 132 #define SYSV2_SUPER_MAGIC 0x012FF7B6 133 #define SYSV4_SUPER_MAGIC 0x012FF7B5 134 #define UDF_SUPER_MAGIC 0x15013346 135 #define UFS_MAGIC 0x00011954 136 #define VXFS_SUPER_MAGIC 0xa501FCF5 137 #define XENIX_SUPER_MAGIC 0x012FF7B4 138 #define XFS_SUPER_MAGIC 0x58465342 139 140 extern int statfs(const char*, struct statfs*) __nonnull((1, 2)); 141 extern int statfs64(const char*, struct statfs64*) __nonnull((1, 2)); 142 extern int fstatfs(int, struct statfs*) __nonnull((2)); 143 extern int fstatfs64(int, struct statfs64*) __nonnull((2)); 144 145 __END_DECLS 146 147 #endif /* _SYS_VFS_H_ */ 148