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49783c67 | 1 | /* Convert between the kernel's `struct stat' format, and libc's. |
d4697bc9 | 2 | Copyright (C) 1991-2014 Free Software Foundation, Inc. |
49783c67 UD |
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 | |
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. | |
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 | |
13 | Lesser General Public License for more details. | |
14 | ||
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/>. */ | |
49783c67 UD |
18 | |
19 | #include <assert.h> | |
20 | #include <errno.h> | |
21 | #include <sys/stat.h> | |
22 | #include <kernel_stat.h> | |
23 | #include <string.h> | |
24 | #include <kernel-features.h> | |
25 | ||
26 | int | |
27 | __xstat_conv (int vers, struct kernel_stat *kbuf, void *ubuf) | |
28 | { | |
29 | switch (vers) | |
30 | { | |
31 | case _STAT_VER_KERNEL: | |
32 | /* Nothing to do. The struct is in the form the kernel expects. | |
33 | We should have short-circuted before we got here, but for | |
34 | completeness... */ | |
35 | *(struct kernel_stat *) ubuf = *kbuf; | |
36 | break; | |
37 | ||
38 | case _STAT_VER_LINUX: | |
39 | { | |
40 | struct stat *buf = ubuf; | |
41 | ||
42 | /* Convert to current kernel version of `struct stat'. */ | |
43 | buf->st_dev = kbuf->st_dev; | |
44 | buf->__pad1 = 0; | |
45 | buf->st_ino = kbuf->st_ino; | |
46 | buf->st_mode = kbuf->st_mode; | |
47 | buf->st_nlink = kbuf->st_nlink; | |
48 | buf->st_uid = kbuf->st_uid; | |
49 | buf->st_gid = kbuf->st_gid; | |
50 | buf->st_rdev = kbuf->st_rdev; | |
51 | buf->__pad2 = 0; | |
52 | buf->st_size = kbuf->st_size; | |
53 | buf->st_blksize = kbuf->st_blksize; | |
54 | buf->st_blocks = kbuf->st_blocks; | |
55 | buf->st_atim.tv_sec = kbuf->st_atime_sec; | |
56 | buf->st_atim.tv_nsec = 0; | |
57 | buf->st_mtim.tv_sec = kbuf->st_mtime_sec; | |
58 | buf->st_mtim.tv_nsec = 0; | |
59 | buf->st_ctim.tv_sec = kbuf->st_ctime_sec; | |
60 | buf->st_ctim.tv_nsec = 0; | |
d1d9eaf4 OB |
61 | buf->__glibc_reserved4 = 0; |
62 | buf->__glibc_reserved5 = 0; | |
49783c67 UD |
63 | } |
64 | break; | |
65 | ||
66 | default: | |
67 | __set_errno (EINVAL); | |
68 | return -1; | |
69 | } | |
70 | ||
71 | return 0; | |
72 | } | |
73 | ||
74 | int | |
75 | __xstat32_conv (int vers, struct stat64 *sbuf, struct stat *buf) | |
76 | { | |
77 | struct kernel_stat64 *kbuf; | |
78 | ||
79 | /* *stat64 syscalls on sparc64 really fill in struct kernel_stat64, | |
80 | rather than struct stat64. But it is the same size as | |
81 | struct kernel_stat64, so use this hack so that we can reuse | |
82 | i386 {,f,l}xstat{,at}.c routines. */ | |
83 | __asm ("" : "=r" (kbuf) : "0" (sbuf)); | |
84 | assert (sizeof (struct stat) == sizeof (struct stat64)); | |
85 | assert (sizeof (struct stat64) >= sizeof (struct kernel_stat64)); | |
86 | ||
87 | switch (vers) | |
88 | { | |
89 | case _STAT_VER_LINUX: | |
90 | { | |
91 | /* Convert current kernel version of `struct stat64' to | |
92 | `struct stat'. */ | |
93 | buf->st_dev = kbuf->st_dev; | |
94 | buf->__pad1 = 0; | |
95 | buf->st_ino = kbuf->st_ino; | |
96 | buf->st_mode = kbuf->st_mode; | |
97 | buf->st_nlink = kbuf->st_nlink; | |
98 | buf->st_uid = kbuf->st_uid; | |
99 | buf->st_gid = kbuf->st_gid; | |
100 | buf->st_rdev = kbuf->st_rdev; | |
101 | buf->__pad2 = 0; | |
102 | buf->st_size = kbuf->st_size; | |
103 | buf->st_blksize = kbuf->st_blksize; | |
104 | buf->st_blocks = kbuf->st_blocks; | |
105 | buf->st_atim.tv_sec = kbuf->st_atime_sec; | |
106 | buf->st_atim.tv_nsec = kbuf->st_atime_nsec; | |
107 | buf->st_mtim.tv_sec = kbuf->st_mtime_sec; | |
108 | buf->st_mtim.tv_nsec = kbuf->st_mtime_nsec; | |
109 | buf->st_ctim.tv_sec = kbuf->st_ctime_sec; | |
110 | buf->st_ctim.tv_nsec = kbuf->st_ctime_nsec; | |
d1d9eaf4 OB |
111 | buf->__glibc_reserved4 = 0; |
112 | buf->__glibc_reserved5 = 0; | |
49783c67 UD |
113 | } |
114 | break; | |
115 | ||
116 | /* If struct stat64 is different from struct stat then | |
117 | _STAT_VER_KERNEL does not make sense. */ | |
118 | case _STAT_VER_KERNEL: | |
119 | default: | |
120 | __set_errno (EINVAL); | |
121 | return -1; | |
122 | } | |
123 | ||
124 | return 0; | |
125 | } |