1 | /* $NetBSD: linux32_stat.c,v 1.17 2013/11/18 01:32:52 chs Exp $ */ |
2 | |
3 | /*- |
4 | * Copyright (c) 2006 Emmanuel Dreyfus, all rights reserved. |
5 | * |
6 | * Redistribution and use in source and binary forms, with or without |
7 | * modification, are permitted provided that the following conditions |
8 | * are met: |
9 | * 1. Redistributions of source code must retain the above copyright |
10 | * notice, this list of conditions and the following disclaimer. |
11 | * 2. Redistributions in binary form must reproduce the above copyright |
12 | * notice, this list of conditions and the following disclaimer in the |
13 | * documentation and/or other materials provided with the distribution. |
14 | * 3. All advertising materials mentioning features or use of this software |
15 | * must display the following acknowledgement: |
16 | * This product includes software developed by Emmanuel Dreyfus |
17 | * 4. The name of the author may not be used to endorse or promote |
18 | * products derived from this software without specific prior written |
19 | * permission. |
20 | * |
21 | * THIS SOFTWARE IS PROVIDED BY THE THE AUTHOR AND CONTRIBUTORS ``AS IS'' |
22 | * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
23 | * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
24 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS |
25 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
26 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
27 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
28 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
29 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
30 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
31 | * POSSIBILITY OF SUCH DAMAGE. |
32 | */ |
33 | |
34 | #include <sys/cdefs.h> |
35 | |
36 | __KERNEL_RCSID(0, "$NetBSD: linux32_stat.c,v 1.17 2013/11/18 01:32:52 chs Exp $" ); |
37 | |
38 | #include <sys/types.h> |
39 | #include <sys/param.h> |
40 | #include <sys/fstypes.h> |
41 | #include <sys/signal.h> |
42 | #include <sys/dirent.h> |
43 | #include <sys/kernel.h> |
44 | #include <sys/namei.h> |
45 | #include <sys/fcntl.h> |
46 | #include <sys/filedesc.h> |
47 | #include <sys/select.h> |
48 | #include <sys/proc.h> |
49 | #include <sys/ucred.h> |
50 | #include <sys/swap.h> |
51 | #include <sys/vfs_syscalls.h> |
52 | |
53 | #include <machine/types.h> |
54 | |
55 | #include <sys/syscallargs.h> |
56 | |
57 | #include <compat/netbsd32/netbsd32.h> |
58 | #include <compat/netbsd32/netbsd32_conv.h> |
59 | #include <compat/netbsd32/netbsd32_syscallargs.h> |
60 | |
61 | #include <compat/linux/common/linux_types.h> |
62 | #include <compat/linux/common/linux_signal.h> |
63 | #include <compat/linux/common/linux_machdep.h> |
64 | #include <compat/linux/common/linux_misc.h> |
65 | #include <compat/linux/common/linux_oldolduname.h> |
66 | #include <compat/linux/common/linux_ipc.h> |
67 | #include <compat/linux/common/linux_sem.h> |
68 | #include <compat/linux/common/linux_fcntl.h> |
69 | #include <compat/linux/linux_syscallargs.h> |
70 | |
71 | #include <compat/linux32/common/linux32_types.h> |
72 | #include <compat/linux32/common/linux32_signal.h> |
73 | #include <compat/linux32/common/linux32_machdep.h> |
74 | #include <compat/linux32/common/linux32_sysctl.h> |
75 | #include <compat/linux32/common/linux32_socketcall.h> |
76 | #include <compat/linux32/linux32_syscallargs.h> |
77 | |
78 | static inline void bsd_to_linux32_stat(struct stat *, struct linux32_stat *); |
79 | static inline void bsd_to_linux32_stat64(struct stat *, struct linux32_stat64 *); |
80 | |
81 | #define linux_fakedev(x,y) (x) |
82 | |
83 | static inline void |
84 | bsd_to_linux32_stat(struct stat *st, struct linux32_stat *st32) |
85 | { |
86 | memset(st32, 0, sizeof(*st32)); |
87 | st32->lst_dev = linux_fakedev(st->st_dev, 0); |
88 | st32->lst_ino = st->st_ino; |
89 | st32->lst_mode = st->st_mode; |
90 | if (st->st_nlink >= (1 << 15)) |
91 | st32->lst_nlink = (1 << 15) - 1; |
92 | else |
93 | st32->lst_nlink = st->st_nlink; |
94 | st32->lst_uid = st->st_uid; |
95 | st32->lst_gid = st->st_gid; |
96 | st32->lst_rdev = linux_fakedev(st->st_rdev, 0); |
97 | st32->lst_size = st->st_size; |
98 | st32->lst_blksize = st->st_blksize; |
99 | st32->lst_blocks = st->st_blocks; |
100 | st32->lst_atime = st->st_atime; |
101 | st32->lst_mtime = st->st_mtime; |
102 | st32->lst_ctime = st->st_ctime; |
103 | #ifdef LINUX32_STAT_HAS_NSEC |
104 | st32->lst_atime_nsec = st->st_atimensec; |
105 | st32->lst_mtime_nsec = st->st_mtimensec; |
106 | st32->lst_ctime_nsec = st->st_ctimensec; |
107 | #endif |
108 | } |
109 | |
110 | static inline void |
111 | bsd_to_linux32_stat64(struct stat *st, struct linux32_stat64 *st32) |
112 | { |
113 | memset(st32, 0, sizeof(*st32)); |
114 | st32->lst_dev = linux_fakedev(st->st_dev, 0); |
115 | st32->lst_ino = st->st_ino; |
116 | st32->lst_mode = st->st_mode; |
117 | if (st->st_nlink >= (1 << 15)) |
118 | st32->lst_nlink = (1 << 15) - 1; |
119 | else |
120 | st32->lst_nlink = st->st_nlink; |
121 | st32->lst_uid = st->st_uid; |
122 | st32->lst_gid = st->st_gid; |
123 | st32->lst_rdev = linux_fakedev(st->st_rdev, 0); |
124 | st32->lst_size = st->st_size; |
125 | st32->lst_blksize = st->st_blksize; |
126 | st32->lst_blocks = st->st_blocks; |
127 | st32->lst_atime = st->st_atime; |
128 | st32->lst_mtime = st->st_mtime; |
129 | st32->lst_ctime = st->st_ctime; |
130 | #ifdef LINUX32_STAT64_HAS_NSEC |
131 | st32->lst_atime_nsec = st->st_atimensec; |
132 | st32->lst_mtime_nsec = st->st_mtimensec; |
133 | st32->lst_ctime_nsec = st->st_ctimensec; |
134 | #endif |
135 | #ifdef LINUX32_STAT64_HAS_BROKEN_ST_INO |
136 | st32->__lst_ino = st->st_ino; |
137 | #endif |
138 | } |
139 | |
140 | int |
141 | linux32_sys_stat(struct lwp *l, const struct linux32_sys_stat_args *uap, register_t *retval) |
142 | { |
143 | /* { |
144 | syscallarg(netbsd32_charp) path; |
145 | syscallarg(linux32_statp) sp; |
146 | } */ |
147 | int error; |
148 | struct stat st; |
149 | struct linux32_stat st32; |
150 | |
151 | error = do_sys_stat(SCARG_P32(uap, path), FOLLOW, &st); |
152 | if (error != 0) |
153 | return error; |
154 | |
155 | bsd_to_linux32_stat(&st, &st32); |
156 | return copyout(&st32, SCARG_P32(uap, sp), sizeof(st32)); |
157 | } |
158 | |
159 | int |
160 | linux32_sys_lstat(struct lwp *l, const struct linux32_sys_lstat_args *uap, register_t *retval) |
161 | { |
162 | /* { |
163 | syscallarg(netbsd32_charp) path; |
164 | syscallarg(linux32_statp) sp; |
165 | } */ |
166 | int error; |
167 | struct stat st; |
168 | struct linux32_stat st32; |
169 | |
170 | error = do_sys_stat(SCARG_P32(uap, path), NOFOLLOW, &st); |
171 | if (error != 0) |
172 | return error; |
173 | |
174 | bsd_to_linux32_stat(&st, &st32); |
175 | return copyout(&st32, SCARG_P32(uap, sp), sizeof(st32)); |
176 | } |
177 | |
178 | int |
179 | linux32_sys_fstat(struct lwp *l, const struct linux32_sys_fstat_args *uap, register_t *retval) |
180 | { |
181 | /* { |
182 | syscallarg(int) fd; |
183 | syscallarg(linux32_statp) sp; |
184 | } */ |
185 | int error; |
186 | struct stat st; |
187 | struct linux32_stat st32; |
188 | |
189 | error = do_sys_fstat(SCARG(uap, fd), &st); |
190 | if (error != 0) |
191 | return error; |
192 | |
193 | bsd_to_linux32_stat(&st, &st32); |
194 | return copyout(&st32, SCARG_P32(uap, sp), sizeof(st32)); |
195 | } |
196 | |
197 | int |
198 | linux32_sys_stat64(struct lwp *l, const struct linux32_sys_stat64_args *uap, register_t *retval) |
199 | { |
200 | /* { |
201 | syscallarg(netbsd32_charp) path; |
202 | syscallarg(linux32_stat64p) sp; |
203 | } */ |
204 | int error; |
205 | struct stat st; |
206 | struct linux32_stat64 st32; |
207 | |
208 | error = do_sys_stat(SCARG_P32(uap, path), FOLLOW, &st); |
209 | if (error != 0) |
210 | return error; |
211 | |
212 | bsd_to_linux32_stat64(&st, &st32); |
213 | return copyout(&st32, SCARG_P32(uap, sp), sizeof(st32)); |
214 | } |
215 | |
216 | int |
217 | linux32_sys_lstat64(struct lwp *l, const struct linux32_sys_lstat64_args *uap, register_t *retval) |
218 | { |
219 | /* { |
220 | syscallarg(netbsd32_charp) path; |
221 | syscallarg(linux32_stat64p) sp; |
222 | } */ |
223 | int error; |
224 | struct stat st; |
225 | struct linux32_stat64 st32; |
226 | |
227 | error = do_sys_stat(SCARG_P32(uap, path), NOFOLLOW, &st); |
228 | if (error != 0) |
229 | return error; |
230 | |
231 | bsd_to_linux32_stat64(&st, &st32); |
232 | return copyout(&st32, SCARG_P32(uap, sp), sizeof(st32)); |
233 | } |
234 | |
235 | int |
236 | linux32_sys_fstat64(struct lwp *l, const struct linux32_sys_fstat64_args *uap, register_t *retval) |
237 | { |
238 | /* { |
239 | syscallarg(int) fd; |
240 | syscallarg(linux32_stat64p) sp; |
241 | } */ |
242 | int error; |
243 | struct stat st; |
244 | struct linux32_stat64 st32; |
245 | |
246 | error = do_sys_fstat(SCARG(uap, fd), &st); |
247 | if (error != 0) |
248 | return error; |
249 | |
250 | bsd_to_linux32_stat64(&st, &st32); |
251 | return copyout(&st32, SCARG_P32(uap, sp), sizeof(st32)); |
252 | } |
253 | |
254 | int |
255 | linux32_sys_fstatat64(struct lwp *l, const struct linux32_sys_fstatat64_args *uap, register_t *retval) |
256 | { |
257 | /* { |
258 | syscallarg(int) fd; |
259 | syscallarg(netbsd32_charp) path; |
260 | syscallarg(linux32_stat64p) sp; |
261 | syscallarg(int) flag; |
262 | } */ |
263 | int error, nd_flag; |
264 | struct stat st; |
265 | struct linux32_stat64 st32; |
266 | |
267 | if (SCARG(uap, flag) & LINUX_AT_SYMLINK_NOFOLLOW) |
268 | nd_flag = NOFOLLOW; |
269 | else |
270 | nd_flag = FOLLOW; |
271 | |
272 | error = do_sys_statat(l, SCARG(uap, fd), SCARG_P32(uap, path), nd_flag, &st); |
273 | if (error != 0) |
274 | return error; |
275 | |
276 | bsd_to_linux32_stat64(&st, &st32); |
277 | |
278 | return copyout(&st32, SCARG_P32(uap, sp), sizeof st32); |
279 | } |
280 | |