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47b33891 | 1 | /* Return information about the filesystem on which FD resides. |
f7a9f785 | 2 | Copyright (C) 1996-2016 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 PE |
16 | License along with the GNU C Library; if not, see |
17 | <http://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 __fstatfs and fstatfs so that GCC will not |
26 | complain about the different function signatures if they are aliased | |
27 | to __fstat64. 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 __fstatfs __fstatfs_disable | |
32 | # define fstatfs fstatfs_disable | |
33 | #endif | |
47b33891 | 34 | #include <sys/statfs.h> |
9e878fa9 | 35 | |
f8de5057 | 36 | #include <kernel-features.h> |
51d1ca00 UD |
37 | |
38 | /* Defined in statfs64.c. */ | |
39 | extern int __no_statfs64 attribute_hidden; | |
47b33891 RM |
40 | |
41 | /* Return information about the filesystem on which FD resides. */ | |
42 | int | |
bb8e0116 | 43 | __fstatfs64 (int fd, struct statfs64 *buf) |
47b33891 | 44 | { |
51d1ca00 UD |
45 | #ifdef __NR_fstatfs64 |
46 | # if __ASSUME_STATFS64 == 0 | |
47 | if (! __no_statfs64) | |
48 | # endif | |
49 | { | |
e5dee2c8 L |
50 | int result = INLINE_SYSCALL (fstatfs64, 3, fd, sizeof (*buf), buf); |
51 | ||
51d1ca00 | 52 | # if __ASSUME_STATFS64 == 0 |
e5dee2c8 | 53 | if (result == 0 || errno != ENOSYS) |
0c5b8b59 | 54 | # endif |
e5dee2c8 | 55 | return result; |
51d1ca00 UD |
56 | |
57 | # if __ASSUME_STATFS64 == 0 | |
58 | __no_statfs64 = 1; | |
59 | # endif | |
60 | } | |
61 | #endif | |
62 | ||
63 | #if __ASSUME_STATFS64 == 0 | |
47b33891 RM |
64 | struct statfs buf32; |
65 | ||
66 | if (__fstatfs (fd, &buf32) < 0) | |
67 | return -1; | |
68 | ||
69 | buf->f_type = buf32.f_type; | |
70 | buf->f_bsize = buf32.f_bsize; | |
71 | buf->f_blocks = buf32.f_blocks; | |
72 | buf->f_bfree = buf32.f_bfree; | |
73 | buf->f_bavail = buf32.f_bavail; | |
74 | buf->f_files = buf32.f_files; | |
75 | buf->f_ffree = buf32.f_ffree; | |
76 | buf->f_fsid = buf32.f_fsid; | |
77 | buf->f_namelen = buf32.f_namelen; | |
51d1ca00 | 78 | buf->f_frsize = buf32.f_frsize; |
47b33891 RM |
79 | memcpy (buf->f_spare, buf32.f_spare, sizeof (buf32.f_spare)); |
80 | ||
81 | return 0; | |
51d1ca00 | 82 | #endif |
47b33891 | 83 | } |
bb8e0116 | 84 | weak_alias (__fstatfs64, fstatfs64) |
510abe7b SE |
85 | |
86 | #undef __fstatfs | |
87 | #undef fstatfs | |
88 | ||
89 | #if STATFS_IS_STATFS64 | |
90 | weak_alias (__fstatfs64, __fstatfs) | |
91 | weak_alias (__fstatfs64, fstatfs) | |
92 | #endif |