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 <sys/cdefs.h> 33 34 #include <stdint.h> 35 #include <sys/types.h> 36 37 __BEGIN_DECLS 38 39 /* The kernel's __kernel_fsid_t has a 'val' member but glibc uses '__val'. */ 40 typedef struct { int __val[2]; } __fsid_t; 41 typedef __fsid_t fsid_t; 42 43 #if defined(__LP64__) 44 /* We can't just use the kernel struct statfs directly here because 45 * it's reused for both struct statfs *and* struct statfs64. */ 46 #define __STATFS64_BODY \ 47 uint64_t f_type; \ 48 uint64_t f_bsize; \ 49 uint64_t f_blocks; \ 50 uint64_t f_bfree; \ 51 uint64_t f_bavail; \ 52 uint64_t f_files; \ 53 uint64_t f_ffree; \ 54 fsid_t f_fsid; \ 55 uint64_t f_namelen; \ 56 uint64_t f_frsize; \ 57 uint64_t f_flags; \ 58 uint64_t f_spare[4]; \ 59 60 #else 61 /* 32-bit ARM or x86 (corresponds to the kernel's statfs64 type). */ 62 #define __STATFS64_BODY \ 63 uint32_t f_type; \ 64 uint32_t f_bsize; \ 65 uint64_t f_blocks; \ 66 uint64_t f_bfree; \ 67 uint64_t f_bavail; \ 68 uint64_t f_files; \ 69 uint64_t f_ffree; \ 70 fsid_t f_fsid; \ 71 uint32_t f_namelen; \ 72 uint32_t f_frsize; \ 73 uint32_t f_flags; \ 74 uint32_t f_spare[4]; \ 75 76 #endif 77 78 struct statfs { __STATFS64_BODY }; 79 struct statfs64 { __STATFS64_BODY }; 80 81 #undef __STATFS64_BODY 82 83 /* Declare that we have the f_namelen, f_frsize, and f_flags fields. */ 84 #define _STATFS_F_NAMELEN 85 #define _STATFS_F_FRSIZE 86 #define _STATFS_F_FLAGS 87 88 /* Pull in the kernel magic numbers. */ 89 #include <linux/magic.h> 90 /* Add in ones that we had historically that aren't in the uapi header. */ 91 #define BEFS_SUPER_MAGIC 0x42465331 92 #define BFS_MAGIC 0x1BADFACE 93 #define CIFS_MAGIC_NUMBER 0xFF534D42 94 #define COH_SUPER_MAGIC 0x012FF7B7 95 #define DEVFS_SUPER_MAGIC 0x1373 96 #define EXT_SUPER_MAGIC 0x137D 97 #define EXT2_OLD_SUPER_MAGIC 0xEF51 98 #define HFS_SUPER_MAGIC 0x4244 99 #define JFS_SUPER_MAGIC 0x3153464a 100 #define NTFS_SB_MAGIC 0x5346544e 101 #define ROMFS_MAGIC 0x7275 102 #define SYSV2_SUPER_MAGIC 0x012FF7B6 103 #define SYSV4_SUPER_MAGIC 0x012FF7B5 104 #define UDF_SUPER_MAGIC 0x15013346 105 #define UFS_MAGIC 0x00011954 106 #define VXFS_SUPER_MAGIC 0xa501FCF5 107 #define XENIX_SUPER_MAGIC 0x012FF7B4 108 #define XFS_SUPER_MAGIC 0x58465342 109 110 int statfs(const char* _Nonnull __path, struct statfs* _Nonnull __buf); 111 int statfs64(const char* _Nonnull __path, struct statfs64* _Nonnull __buf); 112 int fstatfs(int __fd, struct statfs* _Nonnull __buf); 113 int fstatfs64(int __fd, struct statfs64* _Nonnull __buf); 114 115 __END_DECLS 116 117 #endif 118