linux32_stat.c revision 1.17
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
Indexes created Tue Sep 23 14:10:03 GMT 2025