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47b33891 | 1 | /* Return information about the filesystem on which FILE resides. |
2b778ceb | 2 | Copyright (C) 1996-2021 Free Software Foundation, Inc. |
47b33891 RM |
3 | This file is part of the GNU C Library. |
4 | ||
5 | The GNU C Library is free software; you can redistribute it and/or | |
41bdb6e2 AJ |
6 | modify it under the terms of the GNU Lesser General Public |
7 | License as published by the Free Software Foundation; either | |
8 | version 2.1 of the License, or (at your option) any later version. | |
47b33891 RM |
9 | |
10 | The GNU C Library is distributed in the hope that it will be useful, | |
11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
41bdb6e2 | 13 | Lesser General Public License for more details. |
47b33891 | 14 | |
41bdb6e2 | 15 | You should have received a copy of the GNU Lesser General Public |
59ba27a6 | 16 | License along with the GNU C Library; if not, see |
5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
47b33891 | 18 | |
9e878fa9 SE |
19 | #include <errno.h> |
20 | #include <string.h> | |
21 | #include <stddef.h> | |
22 | #include <sysdep.h> | |
23 | #include <kernel_stat.h> | |
24 | ||
510abe7b SE |
25 | /* Hide the prototypes for __statfs and statfs so that GCC will not |
26 | complain about the different function signatures if they are aliased | |
27 | to __stat64. If STATFS_IS_STATFS64 is not zero then the statfs and | |
28 | statfs64 structures have an identical layout but different type names. */ | |
29 | ||
9e878fa9 SE |
30 | #if STATFS_IS_STATFS64 |
31 | # define __statfs __statfs_disable | |
32 | # define statfs statfs_disable | |
33 | #endif | |
47b33891 | 34 | #include <sys/statfs.h> |
9e878fa9 | 35 | |
f8de5057 | 36 | #include <kernel-features.h> |
51d1ca00 | 37 | |
08c9a553 UD |
38 | |
39 | # if __ASSUME_STATFS64 == 0 | |
51d1ca00 | 40 | int __no_statfs64 attribute_hidden; |
08c9a553 | 41 | #endif |
47b33891 RM |
42 | |
43 | /* Return information about the filesystem on which FILE resides. */ | |
44 | int | |
bb8e0116 | 45 | __statfs64 (const char *file, struct statfs64 *buf) |
47b33891 | 46 | { |
51d1ca00 UD |
47 | #ifdef __NR_statfs64 |
48 | # if __ASSUME_STATFS64 == 0 | |
49 | if (! __no_statfs64) | |
50 | # endif | |
51 | { | |
e5dee2c8 | 52 | int result = INLINE_SYSCALL (statfs64, 3, file, sizeof (*buf), buf); |
0c5b8b59 | 53 | |
e5dee2c8 L |
54 | # if __ASSUME_STATFS64 == 0 |
55 | if (result == 0 || errno != ENOSYS) | |
0c5b8b59 | 56 | # endif |
e5dee2c8 | 57 | return result; |
51d1ca00 UD |
58 | |
59 | # if __ASSUME_STATFS64 == 0 | |
60 | __no_statfs64 = 1; | |
61 | # endif | |
62 | } | |
63 | #endif | |
64 | ||
65 | #if __ASSUME_STATFS64 == 0 | |
47b33891 RM |
66 | struct statfs buf32; |
67 | ||
68 | if (__statfs (file, &buf32) < 0) | |
69 | return -1; | |
70 | ||
71 | buf->f_type = buf32.f_type; | |
72 | buf->f_bsize = buf32.f_bsize; | |
73 | buf->f_blocks = buf32.f_blocks; | |
74 | buf->f_bfree = buf32.f_bfree; | |
75 | buf->f_bavail = buf32.f_bavail; | |
76 | buf->f_files = buf32.f_files; | |
77 | buf->f_ffree = buf32.f_ffree; | |
78 | buf->f_fsid = buf32.f_fsid; | |
79 | buf->f_namelen = buf32.f_namelen; | |
51d1ca00 | 80 | buf->f_frsize = buf32.f_frsize; |
d3a5ae6a | 81 | buf->f_flags = buf32.f_flags; |
47b33891 RM |
82 | memcpy (buf->f_spare, buf32.f_spare, sizeof (buf32.f_spare)); |
83 | ||
84 | return 0; | |
51d1ca00 | 85 | #endif |
47b33891 | 86 | } |
bb8e0116 | 87 | weak_alias (__statfs64, statfs64) |
510abe7b SE |
88 | |
89 | #undef __statfs | |
90 | #undef statfs | |
91 | ||
92 | #if STATFS_IS_STATFS64 | |
93 | weak_alias (__statfs64, __statfs) | |
94 | weak_alias (__statfs64, statfs) | |
95 | libc_hidden_ver (__statfs64, __statfs) | |
96 | #endif |