1 /* $NetBSD: linux32_stat.c,v 1.18 2021/11/25 02:27:08 ryo 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 1.18 2021/11/25 02:27:08 ryo 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_syscall.h> 77 #include <compat/linux32/linux32_syscallargs.h> 78 79 static inline void bsd_to_linux32_stat(struct stat *, struct linux32_stat *); 80 static inline void bsd_to_linux32_stat64(struct stat *, struct linux32_stat64 *); 81 82 #define linux_fakedev(x,y) (x) 83 84 static inline void 85 bsd_to_linux32_stat(struct stat *st, struct linux32_stat *st32) 86 { 87 memset(st32, 0, sizeof(*st32)); 88 st32->lst_dev = linux_fakedev(st->st_dev, 0); 89 st32->lst_ino = st->st_ino; 90 st32->lst_mode = st->st_mode; 91 if (st->st_nlink >= (1 << 15)) 92 st32->lst_nlink = (1 << 15) - 1; 93 else 94 st32->lst_nlink = st->st_nlink; 95 st32->lst_uid = st->st_uid; 96 st32->lst_gid = st->st_gid; 97 st32->lst_rdev = linux_fakedev(st->st_rdev, 0); 98 st32->lst_size = st->st_size; 99 st32->lst_blksize = st->st_blksize; 100 st32->lst_blocks = st->st_blocks; 101 st32->lst_atime = st->st_atime; 102 st32->lst_mtime = st->st_mtime; 103 st32->lst_ctime = st->st_ctime; 104 #ifdef LINUX32_STAT_HAS_NSEC 105 st32->lst_atime_nsec = st->st_atimensec; 106 st32->lst_mtime_nsec = st->st_mtimensec; 107 st32->lst_ctime_nsec = st->st_ctimensec; 108 #endif 109 } 110 111 static inline void 112 bsd_to_linux32_stat64(struct stat *st, struct linux32_stat64 *st32) 113 { 114 memset(st32, 0, sizeof(*st32)); 115 st32->lst_dev = linux_fakedev(st->st_dev, 0); 116 st32->lst_ino = st->st_ino; 117 st32->lst_mode = st->st_mode; 118 if (st->st_nlink >= (1 << 15)) 119 st32->lst_nlink = (1 << 15) - 1; 120 else 121 st32->lst_nlink = st->st_nlink; 122 st32->lst_uid = st->st_uid; 123 st32->lst_gid = st->st_gid; 124 st32->lst_rdev = linux_fakedev(st->st_rdev, 0); 125 st32->lst_size = st->st_size; 126 st32->lst_blksize = st->st_blksize; 127 st32->lst_blocks = st->st_blocks; 128 st32->lst_atime = st->st_atime; 129 st32->lst_mtime = st->st_mtime; 130 st32->lst_ctime = st->st_ctime; 131 #ifdef LINUX32_STAT64_HAS_NSEC 132 st32->lst_atime_nsec = st->st_atimensec; 133 st32->lst_mtime_nsec = st->st_mtimensec; 134 st32->lst_ctime_nsec = st->st_ctimensec; 135 #endif 136 #ifdef LINUX32_STAT64_HAS_BROKEN_ST_INO 137 st32->__lst_ino = st->st_ino; 138 #endif 139 } 140 141 int 142 linux32_sys_stat(struct lwp *l, const struct linux32_sys_stat_args *uap, register_t *retval) 143 { 144 /* { 145 syscallarg(netbsd32_charp) path; 146 syscallarg(linux32_statp) sp; 147 } */ 148 int error; 149 struct stat st; 150 struct linux32_stat st32; 151 152 error = do_sys_stat(SCARG_P32(uap, path), FOLLOW, &st); 153 if (error != 0) 154 return error; 155 156 bsd_to_linux32_stat(&st, &st32); 157 return copyout(&st32, SCARG_P32(uap, sp), sizeof(st32)); 158 } 159 160 int 161 linux32_sys_lstat(struct lwp *l, const struct linux32_sys_lstat_args *uap, register_t *retval) 162 { 163 /* { 164 syscallarg(netbsd32_charp) path; 165 syscallarg(linux32_statp) sp; 166 } */ 167 int error; 168 struct stat st; 169 struct linux32_stat st32; 170 171 error = do_sys_stat(SCARG_P32(uap, path), NOFOLLOW, &st); 172 if (error != 0) 173 return error; 174 175 bsd_to_linux32_stat(&st, &st32); 176 return copyout(&st32, SCARG_P32(uap, sp), sizeof(st32)); 177 } 178 179 int 180 linux32_sys_fstat(struct lwp *l, const struct linux32_sys_fstat_args *uap, register_t *retval) 181 { 182 /* { 183 syscallarg(int) fd; 184 syscallarg(linux32_statp) sp; 185 } */ 186 int error; 187 struct stat st; 188 struct linux32_stat st32; 189 190 error = do_sys_fstat(SCARG(uap, fd), &st); 191 if (error != 0) 192 return error; 193 194 bsd_to_linux32_stat(&st, &st32); 195 return copyout(&st32, SCARG_P32(uap, sp), sizeof(st32)); 196 } 197 198 int 199 linux32_sys_stat64(struct lwp *l, const struct linux32_sys_stat64_args *uap, register_t *retval) 200 { 201 /* { 202 syscallarg(netbsd32_charp) path; 203 syscallarg(linux32_stat64p) sp; 204 } */ 205 int error; 206 struct stat st; 207 struct linux32_stat64 st32; 208 209 error = do_sys_stat(SCARG_P32(uap, path), FOLLOW, &st); 210 if (error != 0) 211 return error; 212 213 bsd_to_linux32_stat64(&st, &st32); 214 return copyout(&st32, SCARG_P32(uap, sp), sizeof(st32)); 215 } 216 217 int 218 linux32_sys_lstat64(struct lwp *l, const struct linux32_sys_lstat64_args *uap, register_t *retval) 219 { 220 /* { 221 syscallarg(netbsd32_charp) path; 222 syscallarg(linux32_stat64p) sp; 223 } */ 224 int error; 225 struct stat st; 226 struct linux32_stat64 st32; 227 228 error = do_sys_stat(SCARG_P32(uap, path), NOFOLLOW, &st); 229 if (error != 0) 230 return error; 231 232 bsd_to_linux32_stat64(&st, &st32); 233 return copyout(&st32, SCARG_P32(uap, sp), sizeof(st32)); 234 } 235 236 int 237 linux32_sys_fstat64(struct lwp *l, const struct linux32_sys_fstat64_args *uap, register_t *retval) 238 { 239 /* { 240 syscallarg(int) fd; 241 syscallarg(linux32_stat64p) sp; 242 } */ 243 int error; 244 struct stat st; 245 struct linux32_stat64 st32; 246 247 error = do_sys_fstat(SCARG(uap, fd), &st); 248 if (error != 0) 249 return error; 250 251 bsd_to_linux32_stat64(&st, &st32); 252 return copyout(&st32, SCARG_P32(uap, sp), sizeof(st32)); 253 } 254 255 int 256 linux32_sys_fstatat64(struct lwp *l, 257 const struct linux32_sys_fstatat64_args *uap, register_t *retval) 258 { 259 /* { 260 syscallarg(int) fd; 261 syscallarg(netbsd32_charp) path; 262 syscallarg(linux32_stat64p) sp; 263 syscallarg(int) flag; 264 } */ 265 struct linux32_stat64 st32; 266 struct stat st; 267 int error; 268 269 error = linux_statat(l, SCARG(uap, fd), SCARG_P32(uap, path), 270 SCARG(uap, flag), &st); 271 if (error != 0) 272 return error; 273 274 bsd_to_linux32_stat64(&st, &st32); 275 276 return copyout(&st32, SCARG_P32(uap, sp), sizeof st32); 277 } 278 279 #ifdef LINUX32_SYS_statx 280 int 281 linux32_sys_statx(struct lwp *l, const struct linux32_sys_statx_args *uap, 282 register_t *retval) 283 { 284 /* { 285 syscallarg(int) fd; 286 syscallarg(netbsd32_charp) path; 287 syscallarg(int) flag; 288 syscallarg(unsigned int) mask; 289 syscallarg(linux32_statxp) sp; 290 } */ 291 struct linux_statx stx; 292 struct stat st; 293 int error; 294 295 error = linux_statat(l, SCARG(uap, fd), SCARG_P32(uap, path), 296 SCARG(uap, flag), &st); 297 if (error != 0) 298 return error; 299 300 /* struct statx has binary compatibilities between 32bit and 64bit */ 301 error = bsd_to_linux_statx(&st, &stx, SCARG(uap, mask)); 302 if (error != 0) 303 return error; 304 305 return copyout(&stx, SCARG_P32(uap, sp), sizeof stx); 306 } 307 #endif /* LINUX32_SYS_statx */ 308
Indexes created Mon Sep 22 13:09:51 GMT 2025