linux32_stat.c revision 1.5.4.2
1 /* $NetBSD: linux32_stat.c,v 1.5.4.2 2007/03/29 19:27:38 reinoud 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 1.5.4.2 2007/03/29 19:27:38 reinoud 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 linux32_from_stat(struct stat *, struct linux32_stat64 *); 76 77 #define linux_fakedev(x,y) (x) 78 static inline void 79 linux32_from_stat(st, st32) 80 struct stat *st; 81 struct linux32_stat64 *st32; 82 { 83 bzero(st32, 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_STAT64_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 #ifdef LINUX32_STAT64_HAS_BROKEN_ST_INO 106 st32->lst_ino = st->st_ino; 107 #endif 108 109 return; 110 } 111 112 int 113 linux32_sys_stat64(l, v, retval) 114 struct lwp *l; 115 void *v; 116 register_t *retval; 117 { 118 struct linux32_sys_stat64_args /* { 119 syscallarg(netbsd32_charp) path; 120 syscallarg(linux32_statp) sp; 121 } */ *uap = v; 122 void *sg = stackgap_init(l->l_proc, 0); 123 int error; 124 struct stat st; 125 struct linux32_stat64 st32; 126 struct linux32_stat64 *st32p; 127 const char *path = SCARG_P32(uap, path); 128 129 CHECK_ALT_EXIST(l, &sg, path); 130 131 error = do_sys_stat(l, path, FOLLOW, &st); 132 if (error != 0) 133 return error; 134 135 linux32_from_stat(&st, &st32); 136 137 st32p = SCARG_P32(uap, sp); 138 139 return copyout(&st32, st32p, sizeof(*st32p)); 140 } 141 142 int 143 linux32_sys_lstat64(l, v, retval) 144 struct lwp *l; 145 void *v; 146 register_t *retval; 147 { 148 struct linux32_sys_lstat64_args /* { 149 syscallarg(netbsd32_charp) path; 150 syscallarg(linux32_stat64p) sp; 151 } */ *uap = v; 152 void *sg = stackgap_init(l->l_proc, 0); 153 int error; 154 struct stat st; 155 struct linux32_stat64 st32; 156 struct linux32_stat64 *st32p; 157 const char *path = SCARG_P32(uap, path); 158 159 CHECK_ALT_EXIST(l, &sg, path); 160 161 error = do_sys_stat(l, path, NOFOLLOW, &st); 162 if (error != 0) 163 return error; 164 165 linux32_from_stat(&st, &st32); 166 167 st32p = SCARG_P32(uap, sp); 168 169 return copyout(&st32, st32p, sizeof(*st32p)); 170 } 171 172 int 173 linux32_sys_fstat64(l, v, retval) 174 struct lwp *l; 175 void *v; 176 register_t *retval; 177 { 178 struct linux32_sys_fstat64_args /* { 179 syscallarg(int) fd; 180 syscallarg(linux32_stat64p) sp; 181 } */ *uap = v; 182 int error; 183 struct stat st; 184 struct linux32_stat64 st32; 185 struct linux32_stat64 *st32p; 186 187 error = do_sys_fstat(l, SCARG(uap, fd), &st); 188 if (error != 0) 189 return error; 190 191 linux32_from_stat(&st, &st32); 192 193 st32p = SCARG_P32(uap, sp); 194 195 return copyout(&st32, st32p, sizeof(*st32p)); 196 } 197
Indexes created Sun Oct 12 22:09:51 GMT 2025