| 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 | |