linux32_stat.c revision 1.10
1 /* $NetBSD: linux32_stat.c,v 1.10 2007/12/20 23:02:58 dsl 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 1.10 2007/12/20 23:02:58 dsl 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(struct stat *st, struct linux32_stat64 *st32) 80 { 81 bzero(st32, sizeof(*st32)); 82 st32->lst_dev = linux_fakedev(st->st_dev, 0); 83 st32->__lst_ino = st->st_ino; 84 st32->lst_mode = st->st_mode; 85 if (st->st_nlink >= (1 << 15)) 86 st32->lst_nlink = (1 << 15) - 1; 87 else 88 st32->lst_nlink = st->st_nlink; 89 st32->lst_uid = st->st_uid; 90 st32->lst_gid = st->st_gid; 91 st32->lst_rdev = linux_fakedev(st->st_rdev, 0); 92 st32->lst_size = st->st_size; 93 st32->lst_blksize = st->st_blksize; 94 st32->lst_blocks = st->st_blocks; 95 st32->lst_atime = st->st_atime; 96 st32->lst_mtime = st->st_mtime; 97 st32->lst_ctime = st->st_ctime; 98 #ifdef LINUX32_STAT64_HAS_NSEC 99 st32->lst_atime_nsec = st->st_atimensec; 100 st32->lst_mtime_nsec = st->st_mtimensec; 101 st32->lst_ctime_nsec = st->st_ctimensec; 102 #endif 103 #ifdef LINUX32_STAT64_HAS_BROKEN_ST_INO 104 st32->lst_ino = st->st_ino; 105 #endif 106 107 return; 108 } 109 110 int 111 linux32_sys_stat64(struct lwp *l, const struct linux32_sys_stat64_args *uap, register_t *retval) 112 { 113 /* { 114 syscallarg(netbsd32_charp) path; 115 syscallarg(linux32_statp) sp; 116 } */ 117 int error; 118 struct stat st; 119 struct linux32_stat64 st32; 120 struct linux32_stat64 *st32p; 121 const char *path = SCARG_P32(uap, path); 122 123 error = do_sys_stat(l, path, FOLLOW, &st); 124 if (error != 0) 125 return error; 126 127 linux32_from_stat(&st, &st32); 128 129 st32p = SCARG_P32(uap, sp); 130 131 return copyout(&st32, st32p, sizeof(*st32p)); 132 } 133 134 int 135 linux32_sys_lstat64(struct lwp *l, const struct linux32_sys_lstat64_args *uap, register_t *retval) 136 { 137 /* { 138 syscallarg(netbsd32_charp) path; 139 syscallarg(linux32_stat64p) sp; 140 } */ 141 int error; 142 struct stat st; 143 struct linux32_stat64 st32; 144 struct linux32_stat64 *st32p; 145 const char *path = SCARG_P32(uap, path); 146 147 error = do_sys_stat(l, path, NOFOLLOW, &st); 148 if (error != 0) 149 return error; 150 151 linux32_from_stat(&st, &st32); 152 153 st32p = SCARG_P32(uap, sp); 154 155 return copyout(&st32, st32p, sizeof(*st32p)); 156 } 157 158 int 159 linux32_sys_fstat64(struct lwp *l, const struct linux32_sys_fstat64_args *uap, register_t *retval) 160 { 161 /* { 162 syscallarg(int) fd; 163 syscallarg(linux32_stat64p) sp; 164 } */ 165 int error; 166 struct stat st; 167 struct linux32_stat64 st32; 168 struct linux32_stat64 *st32p; 169 170 error = do_sys_fstat(l, SCARG(uap, fd), &st); 171 if (error != 0) 172 return error; 173 174 linux32_from_stat(&st, &st32); 175 176 st32p = SCARG_P32(uap, sp); 177 178 return copyout(&st32, st32p, sizeof(*st32p)); 179 } 180
Indexes created Tue Sep 23 14:10:03 GMT 2025