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 int statfs(const char* _Nonnull, struct statfs* _Nonnull);
141 int statfs64(const char* _Nonnull, struct statfs64* _Nonnull) __INTRODUCED_IN(21);
142 int fstatfs(int, struct statfs* _Nonnull);
143 int fstatfs64(int, struct statfs64* _Nonnull) __INTRODUCED_IN(21);
144 
145 __END_DECLS
146 
147 #endif /* _SYS_VFS_H_ */
148