linux32_stat.c revision 1.16
1 /* $NetBSD: linux32_stat.c,v 1.16 2009/06/04 17:59:30 njoly 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 1.16 2009/06/04 17:59:30 njoly 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/linux_syscallargs.h> 69 70 #include <compat/linux32/common/linux32_types.h> 71 #include <compat/linux32/common/linux32_signal.h> 72 #include <compat/linux32/common/linux32_machdep.h> 73 #include <compat/linux32/common/linux32_sysctl.h> 74 #include <compat/linux32/common/linux32_socketcall.h> 75 #include <compat/linux32/linux32_syscallargs.h> 76 77 static inline void bsd_to_linux32_stat(struct stat *, struct linux32_stat *); 78 static inline void bsd_to_linux32_stat64(struct stat *, struct linux32_stat64 *); 79 80 #define linux_fakedev(x,y) (x) 81 82 static inline void 83 bsd_to_linux32_stat(struct stat *st, struct linux32_stat *st32) 84 { 85 memset(st32, 0, sizeof(*st32)); 86 st32->lst_dev = linux_fakedev(st->st_dev, 0); 87 st32->lst_ino = st->st_ino; 88 st32->lst_mode = st->st_mode; 89 if (st->st_nlink >= (1 << 15)) 90 st32->lst_nlink = (1 << 15) - 1; 91 else 92 st32->lst_nlink = st->st_nlink; 93 st32->lst_uid = st->st_uid; 94 st32->lst_gid = st->st_gid; 95 st32->lst_rdev = linux_fakedev(st->st_rdev, 0); 96 st32->lst_size = st->st_size; 97 st32->lst_blksize = st->st_blksize; 98 st32->lst_blocks = st->st_blocks; 99 st32->lst_atime = st->st_atime; 100 st32->lst_mtime = st->st_mtime; 101 st32->lst_ctime = st->st_ctime; 102 #ifdef LINUX32_STAT_HAS_NSEC 103 st32->lst_atime_nsec = st->st_atimensec; 104 st32->lst_mtime_nsec = st->st_mtimensec; 105 st32->lst_ctime_nsec = st->st_ctimensec; 106 #endif 107 } 108 109 static inline void 110 bsd_to_linux32_stat64(struct stat *st, struct linux32_stat64 *st32) 111 { 112 memset(st32, 0, sizeof(*st32)); 113 st32->lst_dev = linux_fakedev(st->st_dev, 0); 114 st32->lst_ino = st->st_ino; 115 st32->lst_mode = st->st_mode; 116 if (st->st_nlink >= (1 << 15)) 117 st32->lst_nlink = (1 << 15) - 1; 118 else 119 st32->lst_nlink = st->st_nlink; 120 st32->lst_uid = st->st_uid; 121 st32->lst_gid = st->st_gid; 122 st32->lst_rdev = linux_fakedev(st->st_rdev, 0); 123 st32->lst_size = st->st_size; 124 st32->lst_blksize = st->st_blksize; 125 st32->lst_blocks = st->st_blocks; 126 st32->lst_atime = st->st_atime; 127 st32->lst_mtime = st->st_mtime; 128 st32->lst_ctime = st->st_ctime; 129 #ifdef LINUX32_STAT64_HAS_NSEC 130 st32->lst_atime_nsec = st->st_atimensec; 131 st32->lst_mtime_nsec = st->st_mtimensec; 132 st32->lst_ctime_nsec = st->st_ctimensec; 133 #endif 134 #ifdef LINUX32_STAT64_HAS_BROKEN_ST_INO 135 st32->__lst_ino = st->st_ino; 136 #endif 137 } 138 139 int 140 linux32_sys_stat(struct lwp *l, const struct linux32_sys_stat_args *uap, register_t *retval) 141 { 142 /* { 143 syscallarg(netbsd32_charp) path; 144 syscallarg(linux32_statp) sp; 145 } */ 146 int error; 147 struct stat st; 148 struct linux32_stat st32; 149 150 error = do_sys_stat(SCARG_P32(uap, path), FOLLOW, &st); 151 if (error != 0) 152 return error; 153 154 bsd_to_linux32_stat(&st, &st32); 155 return copyout(&st32, SCARG_P32(uap, sp), sizeof(st32)); 156 } 157 158 int 159 linux32_sys_lstat(struct lwp *l, const struct linux32_sys_lstat_args *uap, register_t *retval) 160 { 161 /* { 162 syscallarg(netbsd32_charp) path; 163 syscallarg(linux32_statp) sp; 164 } */ 165 int error; 166 struct stat st; 167 struct linux32_stat st32; 168 169 error = do_sys_stat(SCARG_P32(uap, path), NOFOLLOW, &st); 170 if (error != 0) 171 return error; 172 173 bsd_to_linux32_stat(&st, &st32); 174 return copyout(&st32, SCARG_P32(uap, sp), sizeof(st32)); 175 } 176 177 int 178 linux32_sys_fstat(struct lwp *l, const struct linux32_sys_fstat_args *uap, register_t *retval) 179 { 180 /* { 181 syscallarg(int) fd; 182 syscallarg(linux32_statp) sp; 183 } */ 184 int error; 185 struct stat st; 186 struct linux32_stat st32; 187 188 error = do_sys_fstat(SCARG(uap, fd), &st); 189 if (error != 0) 190 return error; 191 192 bsd_to_linux32_stat(&st, &st32); 193 return copyout(&st32, SCARG_P32(uap, sp), sizeof(st32)); 194 } 195 196 int 197 linux32_sys_stat64(struct lwp *l, const struct linux32_sys_stat64_args *uap, register_t *retval) 198 { 199 /* { 200 syscallarg(netbsd32_charp) path; 201 syscallarg(linux32_stat64p) sp; 202 } */ 203 int error; 204 struct stat st; 205 struct linux32_stat64 st32; 206 207 error = do_sys_stat(SCARG_P32(uap, path), FOLLOW, &st); 208 if (error != 0) 209 return error; 210 211 bsd_to_linux32_stat64(&st, &st32); 212 return copyout(&st32, SCARG_P32(uap, sp), sizeof(st32)); 213 } 214 215 int 216 linux32_sys_lstat64(struct lwp *l, const struct linux32_sys_lstat64_args *uap, register_t *retval) 217 { 218 /* { 219 syscallarg(netbsd32_charp) path; 220 syscallarg(linux32_stat64p) sp; 221 } */ 222 int error; 223 struct stat st; 224 struct linux32_stat64 st32; 225 226 error = do_sys_stat(SCARG_P32(uap, path), NOFOLLOW, &st); 227 if (error != 0) 228 return error; 229 230 bsd_to_linux32_stat64(&st, &st32); 231 return copyout(&st32, SCARG_P32(uap, sp), sizeof(st32)); 232 } 233 234 int 235 linux32_sys_fstat64(struct lwp *l, const struct linux32_sys_fstat64_args *uap, register_t *retval) 236 { 237 /* { 238 syscallarg(int) fd; 239 syscallarg(linux32_stat64p) sp; 240 } */ 241 int error; 242 struct stat st; 243 struct linux32_stat64 st32; 244 245 error = do_sys_fstat(SCARG(uap, fd), &st); 246 if (error != 0) 247 return error; 248 249 bsd_to_linux32_stat64(&st, &st32); 250 return copyout(&st32, SCARG_P32(uap, sp), sizeof(st32)); 251 } 252
Indexes created Tue Sep 23 14:10:03 GMT 2025