linux32_stat.c revision 1.11.14.1
1 /* $NetBSD: linux32_stat.c,v 1.11.14.1 2015/03/18 17:20:09 snj 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 1.11.14.1 2015/03/18 17:20:09 snj 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/linux_syscallargs.h> 67 68 #include <compat/linux32/common/linux32_types.h> 69 #include <compat/linux32/common/linux32_signal.h> 70 #include <compat/linux32/common/linux32_machdep.h> 71 #include <compat/linux32/common/linux32_sysctl.h> 72 #include <compat/linux32/common/linux32_socketcall.h> 73 #include <compat/linux32/linux32_syscallargs.h> 74 75 static inline void bsd_to_linux32_stat(struct stat *, struct linux32_stat *); 76 static inline void bsd_to_linux32_stat64(struct stat *, struct linux32_stat64 *); 77 78 #define linux_fakedev(x,y) (x) 79 80 static inline void 81 bsd_to_linux32_stat(struct stat *st, struct linux32_stat *st32) 82 { 83 memset(st32, 0, sizeof(*st32)); 84 st32->lst_dev = linux_fakedev(st->st_dev, 0); 85 st32->lst_ino = st->st_ino; 86 st32->lst_mode = st->st_mode; 87 if (st->st_nlink >= (1 << 15)) 88 st32->lst_nlink = (1 << 15) - 1; 89 else 90 st32->lst_nlink = st->st_nlink; 91 st32->lst_uid = st->st_uid; 92 st32->lst_gid = st->st_gid; 93 st32->lst_rdev = linux_fakedev(st->st_rdev, 0); 94 st32->lst_size = st->st_size; 95 st32->lst_blksize = st->st_blksize; 96 st32->lst_blocks = st->st_blocks; 97 st32->lst_atime = st->st_atime; 98 st32->lst_mtime = st->st_mtime; 99 st32->lst_ctime = st->st_ctime; 100 #ifdef LINUX32_STAT_HAS_NSEC 101 st32->lst_atime_nsec = st->st_atimensec; 102 st32->lst_mtime_nsec = st->st_mtimensec; 103 st32->lst_ctime_nsec = st->st_ctimensec; 104 #endif 105 } 106 107 static inline void 108 bsd_to_linux32_stat64(struct stat *st, struct linux32_stat64 *st32) 109 { 110 memset(st32, 0, sizeof(*st32)); 111 st32->lst_dev = linux_fakedev(st->st_dev, 0); 112 st32->lst_ino = st->st_ino; 113 st32->lst_mode = st->st_mode; 114 if (st->st_nlink >= (1 << 15)) 115 st32->lst_nlink = (1 << 15) - 1; 116 else 117 st32->lst_nlink = st->st_nlink; 118 st32->lst_uid = st->st_uid; 119 st32->lst_gid = st->st_gid; 120 st32->lst_rdev = linux_fakedev(st->st_rdev, 0); 121 st32->lst_size = st->st_size; 122 st32->lst_blksize = st->st_blksize; 123 st32->lst_blocks = st->st_blocks; 124 st32->lst_atime = st->st_atime; 125 st32->lst_mtime = st->st_mtime; 126 st32->lst_ctime = st->st_ctime; 127 #ifdef LINUX32_STAT64_HAS_NSEC 128 st32->lst_atime_nsec = st->st_atimensec; 129 st32->lst_mtime_nsec = st->st_mtimensec; 130 st32->lst_ctime_nsec = st->st_ctimensec; 131 #endif 132 #ifdef LINUX32_STAT64_HAS_BROKEN_ST_INO 133 st32->__lst_ino = st->st_ino; 134 #endif 135 } 136 137 int 138 linux32_sys_stat(struct lwp *l, const struct linux32_sys_stat_args *uap, register_t *retval) 139 { 140 /* { 141 syscallarg(netbsd32_charp) path; 142 syscallarg(linux32_statp) sp; 143 } */ 144 int error; 145 struct stat st; 146 struct linux32_stat st32; 147 148 error = do_sys_stat(SCARG_P32(uap, path), FOLLOW, &st); 149 if (error != 0) 150 return error; 151 152 bsd_to_linux32_stat(&st, &st32); 153 return copyout(&st32, SCARG_P32(uap, sp), sizeof(st32)); 154 } 155 156 int 157 linux32_sys_lstat(struct lwp *l, const struct linux32_sys_lstat_args *uap, register_t *retval) 158 { 159 /* { 160 syscallarg(netbsd32_charp) path; 161 syscallarg(linux32_statp) sp; 162 } */ 163 int error; 164 struct stat st; 165 struct linux32_stat st32; 166 167 error = do_sys_stat(SCARG_P32(uap, path), NOFOLLOW, &st); 168 if (error != 0) 169 return error; 170 171 bsd_to_linux32_stat(&st, &st32); 172 return copyout(&st32, SCARG_P32(uap, sp), sizeof(st32)); 173 } 174 175 int 176 linux32_sys_fstat(struct lwp *l, const struct linux32_sys_fstat_args *uap, register_t *retval) 177 { 178 /* { 179 syscallarg(int) fd; 180 syscallarg(linux32_statp) sp; 181 } */ 182 int error; 183 struct stat st; 184 struct linux32_stat st32; 185 186 error = do_sys_fstat(SCARG(uap, fd), &st); 187 if (error != 0) 188 return error; 189 190 bsd_to_linux32_stat(&st, &st32); 191 return copyout(&st32, SCARG_P32(uap, sp), sizeof(st32)); 192 } 193 194 int 195 linux32_sys_stat64(struct lwp *l, const struct linux32_sys_stat64_args *uap, register_t *retval) 196 { 197 /* { 198 syscallarg(netbsd32_charp) path; 199 syscallarg(linux32_stat64p) sp; 200 } */ 201 int error; 202 struct stat st; 203 struct linux32_stat64 st32; 204 205 error = do_sys_stat(SCARG_P32(uap, path), FOLLOW, &st); 206 if (error != 0) 207 return error; 208 209 bsd_to_linux32_stat64(&st, &st32); 210 return copyout(&st32, SCARG_P32(uap, sp), sizeof(st32)); 211 } 212 213 int 214 linux32_sys_lstat64(struct lwp *l, const struct linux32_sys_lstat64_args *uap, register_t *retval) 215 { 216 /* { 217 syscallarg(netbsd32_charp) path; 218 syscallarg(linux32_stat64p) sp; 219 } */ 220 int error; 221 struct stat st; 222 struct linux32_stat64 st32; 223 224 error = do_sys_stat(SCARG_P32(uap, path), NOFOLLOW, &st); 225 if (error != 0) 226 return error; 227 228 bsd_to_linux32_stat64(&st, &st32); 229 return copyout(&st32, SCARG_P32(uap, sp), sizeof(st32)); 230 } 231 232 int 233 linux32_sys_fstat64(struct lwp *l, const struct linux32_sys_fstat64_args *uap, register_t *retval) 234 { 235 /* { 236 syscallarg(int) fd; 237 syscallarg(linux32_stat64p) sp; 238 } */ 239 int error; 240 struct stat st; 241 struct linux32_stat64 st32; 242 243 error = do_sys_fstat(SCARG(uap, fd), &st); 244 if (error != 0) 245 return error; 246 247 bsd_to_linux32_stat64(&st, &st32); 248 return copyout(&st32, SCARG_P32(uap, sp), sizeof(st32)); 249 } 250
Indexes created Sun Oct 12 22:09:51 GMT 2025