linux_file64.c revision 1.2.2.2
1 1.2.2.2 bouyer /* $NetBSD: linux_file64.c,v 1.2.2.2 2000/12/13 15:49:49 bouyer Exp $ */ 2 1.2.2.2 bouyer 3 1.2.2.2 bouyer /*- 4 1.2.2.2 bouyer * Copyright (c) 1995, 1998, 2000 The NetBSD Foundation, Inc. 5 1.2.2.2 bouyer * All rights reserved. 6 1.2.2.2 bouyer * 7 1.2.2.2 bouyer * This code is derived from software contributed to The NetBSD Foundation 8 1.2.2.2 bouyer * by Frank van der Linden and Eric Haszlakiewicz. 9 1.2.2.2 bouyer * 10 1.2.2.2 bouyer * Redistribution and use in source and binary forms, with or without 11 1.2.2.2 bouyer * modification, are permitted provided that the following conditions 12 1.2.2.2 bouyer * are met: 13 1.2.2.2 bouyer * 1. Redistributions of source code must retain the above copyright 14 1.2.2.2 bouyer * notice, this list of conditions and the following disclaimer. 15 1.2.2.2 bouyer * 2. Redistributions in binary form must reproduce the above copyright 16 1.2.2.2 bouyer * notice, this list of conditions and the following disclaimer in the 17 1.2.2.2 bouyer * documentation and/or other materials provided with the distribution. 18 1.2.2.2 bouyer * 3. All advertising materials mentioning features or use of this software 19 1.2.2.2 bouyer * must display the following acknowledgement: 20 1.2.2.2 bouyer * This product includes software developed by the NetBSD 21 1.2.2.2 bouyer * Foundation, Inc. and its contributors. 22 1.2.2.2 bouyer * 4. Neither the name of The NetBSD Foundation nor the names of its 23 1.2.2.2 bouyer * contributors may be used to endorse or promote products derived 24 1.2.2.2 bouyer * from this software without specific prior written permission. 25 1.2.2.2 bouyer * 26 1.2.2.2 bouyer * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 27 1.2.2.2 bouyer * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 28 1.2.2.2 bouyer * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 29 1.2.2.2 bouyer * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 30 1.2.2.2 bouyer * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 31 1.2.2.2 bouyer * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 32 1.2.2.2 bouyer * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 33 1.2.2.2 bouyer * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 34 1.2.2.2 bouyer * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 35 1.2.2.2 bouyer * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 36 1.2.2.2 bouyer * POSSIBILITY OF SUCH DAMAGE. 37 1.2.2.2 bouyer */ 38 1.2.2.2 bouyer 39 1.2.2.2 bouyer /* 40 1.2.2.2 bouyer * Linux 64bit filesystem calls. Used on 32bit archs, not used on 64bit ones. 41 1.2.2.2 bouyer */ 42 1.2.2.2 bouyer 43 1.2.2.2 bouyer #include <sys/param.h> 44 1.2.2.2 bouyer #include <sys/systm.h> 45 1.2.2.2 bouyer #include <sys/namei.h> 46 1.2.2.2 bouyer #include <sys/proc.h> 47 1.2.2.2 bouyer #include <sys/file.h> 48 1.2.2.2 bouyer #include <sys/stat.h> 49 1.2.2.2 bouyer #include <sys/filedesc.h> 50 1.2.2.2 bouyer #include <sys/ioctl.h> 51 1.2.2.2 bouyer #include <sys/kernel.h> 52 1.2.2.2 bouyer #include <sys/mount.h> 53 1.2.2.2 bouyer #include <sys/malloc.h> 54 1.2.2.2 bouyer #include <sys/vnode.h> 55 1.2.2.2 bouyer #include <sys/tty.h> 56 1.2.2.2 bouyer #include <sys/conf.h> 57 1.2.2.2 bouyer 58 1.2.2.2 bouyer #include <sys/syscallargs.h> 59 1.2.2.2 bouyer 60 1.2.2.2 bouyer #include <compat/linux/common/linux_types.h> 61 1.2.2.2 bouyer #include <compat/linux/common/linux_signal.h> 62 1.2.2.2 bouyer #include <compat/linux/common/linux_fcntl.h> 63 1.2.2.2 bouyer #include <compat/linux/common/linux_util.h> 64 1.2.2.2 bouyer #include <compat/linux/common/linux_machdep.h> 65 1.2.2.2 bouyer 66 1.2.2.2 bouyer #include <compat/linux/linux_syscallargs.h> 67 1.2.2.2 bouyer 68 1.2.2.2 bouyer static void bsd_to_linux_stat __P((struct stat *, struct linux_stat64 *)); 69 1.2.2.2 bouyer static int linux_do_stat64 __P((struct proc *, void *, register_t *, int)); 70 1.2.2.2 bouyer 71 1.2.2.2 bouyer /* 72 1.2.2.2 bouyer * Convert a NetBSD stat structure to a Linux stat structure. 73 1.2.2.2 bouyer * Only the order of the fields and the padding in the structure 74 1.2.2.2 bouyer * is different. linux_fakedev is a machine-dependent function 75 1.2.2.2 bouyer * which optionally converts device driver major/minor numbers 76 1.2.2.2 bouyer * (XXX horrible, but what can you do against code that compares 77 1.2.2.2 bouyer * things against constant major device numbers? sigh) 78 1.2.2.2 bouyer */ 79 1.2.2.2 bouyer static void 80 1.2.2.2 bouyer bsd_to_linux_stat(bsp, lsp) 81 1.2.2.2 bouyer struct stat *bsp; 82 1.2.2.2 bouyer struct linux_stat64 *lsp; 83 1.2.2.2 bouyer { 84 1.2.2.2 bouyer lsp->lst_dev = bsp->st_dev; 85 1.2.2.2 bouyer lsp->lst_ino = bsp->st_ino; 86 1.2.2.2 bouyer lsp->lst_mode = (linux_mode_t)bsp->st_mode; 87 1.2.2.2 bouyer if (bsp->st_nlink >= (1 << 15)) 88 1.2.2.2 bouyer lsp->lst_nlink = (1 << 15) - 1; 89 1.2.2.2 bouyer else 90 1.2.2.2 bouyer lsp->lst_nlink = (linux_nlink_t)bsp->st_nlink; 91 1.2.2.2 bouyer lsp->lst_uid = bsp->st_uid; 92 1.2.2.2 bouyer lsp->lst_gid = bsp->st_gid; 93 1.2.2.2 bouyer lsp->lst_rdev = linux_fakedev(bsp->st_rdev); 94 1.2.2.2 bouyer lsp->lst_size = bsp->st_size; 95 1.2.2.2 bouyer lsp->lst_blksize = bsp->st_blksize; 96 1.2.2.2 bouyer lsp->lst_blocks = bsp->st_blocks; 97 1.2.2.2 bouyer lsp->lst_atime = bsp->st_atime; 98 1.2.2.2 bouyer lsp->lst_mtime = bsp->st_mtime; 99 1.2.2.2 bouyer lsp->lst_ctime = bsp->st_ctime; 100 1.2.2.2 bouyer } 101 1.2.2.2 bouyer 102 1.2.2.2 bouyer /* 103 1.2.2.2 bouyer * The stat functions below are plain sailing. stat and lstat are handled 104 1.2.2.2 bouyer * by one function to avoid code duplication. 105 1.2.2.2 bouyer */ 106 1.2.2.2 bouyer int 107 1.2.2.2 bouyer linux_sys_fstat64(p, v, retval) 108 1.2.2.2 bouyer struct proc *p; 109 1.2.2.2 bouyer void *v; 110 1.2.2.2 bouyer register_t *retval; 111 1.2.2.2 bouyer { 112 1.2.2.2 bouyer struct linux_sys_fstat64_args /* { 113 1.2.2.2 bouyer syscallarg(int) fd; 114 1.2.2.2 bouyer syscallarg(linux_stat64 *) sp; 115 1.2.2.2 bouyer } */ *uap = v; 116 1.2.2.2 bouyer struct sys___fstat13_args fsa; 117 1.2.2.2 bouyer struct linux_stat64 tmplst; 118 1.2.2.2 bouyer struct stat *st,tmpst; 119 1.2.2.2 bouyer caddr_t sg; 120 1.2.2.2 bouyer int error; 121 1.2.2.2 bouyer 122 1.2.2.2 bouyer sg = stackgap_init(p->p_emul); 123 1.2.2.2 bouyer 124 1.2.2.2 bouyer st = stackgap_alloc(&sg, sizeof (struct stat)); 125 1.2.2.2 bouyer 126 1.2.2.2 bouyer SCARG(&fsa, fd) = SCARG(uap, fd); 127 1.2.2.2 bouyer SCARG(&fsa, sb) = st; 128 1.2.2.2 bouyer 129 1.2.2.2 bouyer if ((error = sys___fstat13(p, &fsa, retval))) 130 1.2.2.2 bouyer return error; 131 1.2.2.2 bouyer 132 1.2.2.2 bouyer if ((error = copyin(st, &tmpst, sizeof tmpst))) 133 1.2.2.2 bouyer return error; 134 1.2.2.2 bouyer 135 1.2.2.2 bouyer bsd_to_linux_stat(&tmpst, &tmplst); 136 1.2.2.2 bouyer 137 1.2.2.2 bouyer if ((error = copyout(&tmplst, SCARG(uap, sp), sizeof tmplst))) 138 1.2.2.2 bouyer return error; 139 1.2.2.2 bouyer 140 1.2.2.2 bouyer return 0; 141 1.2.2.2 bouyer } 142 1.2.2.2 bouyer 143 1.2.2.2 bouyer static int 144 1.2.2.2 bouyer linux_do_stat64(p, v, retval, dolstat) 145 1.2.2.2 bouyer struct proc *p; 146 1.2.2.2 bouyer void *v; 147 1.2.2.2 bouyer register_t *retval; 148 1.2.2.2 bouyer int dolstat; 149 1.2.2.2 bouyer { 150 1.2.2.2 bouyer struct sys___stat13_args sa; 151 1.2.2.2 bouyer struct linux_stat64 tmplst; 152 1.2.2.2 bouyer struct stat *st, tmpst; 153 1.2.2.2 bouyer caddr_t sg; 154 1.2.2.2 bouyer int error; 155 1.2.2.2 bouyer struct linux_sys_stat64_args *uap = v; 156 1.2.2.2 bouyer 157 1.2.2.2 bouyer sg = stackgap_init(p->p_emul); 158 1.2.2.2 bouyer st = stackgap_alloc(&sg, sizeof (struct stat)); 159 1.2.2.2 bouyer CHECK_ALT_EXIST(p, &sg, SCARG(uap, path)); 160 1.2.2.2 bouyer 161 1.2.2.2 bouyer SCARG(&sa, ub) = st; 162 1.2.2.2 bouyer SCARG(&sa, path) = SCARG(uap, path); 163 1.2.2.2 bouyer 164 1.2.2.2 bouyer if ((error = (dolstat ? sys___lstat13(p, &sa, retval) : 165 1.2.2.2 bouyer sys___stat13(p, &sa, retval)))) 166 1.2.2.2 bouyer return error; 167 1.2.2.2 bouyer 168 1.2.2.2 bouyer if ((error = copyin(st, &tmpst, sizeof tmpst))) 169 1.2.2.2 bouyer return error; 170 1.2.2.2 bouyer 171 1.2.2.2 bouyer bsd_to_linux_stat(&tmpst, &tmplst); 172 1.2.2.2 bouyer 173 1.2.2.2 bouyer if ((error = copyout(&tmplst, SCARG(uap, sp), sizeof tmplst))) 174 1.2.2.2 bouyer return error; 175 1.2.2.2 bouyer 176 1.2.2.2 bouyer return 0; 177 1.2.2.2 bouyer } 178 1.2.2.2 bouyer 179 1.2.2.2 bouyer int 180 1.2.2.2 bouyer linux_sys_stat64(p, v, retval) 181 1.2.2.2 bouyer struct proc *p; 182 1.2.2.2 bouyer void *v; 183 1.2.2.2 bouyer register_t *retval; 184 1.2.2.2 bouyer { 185 1.2.2.2 bouyer struct linux_sys_stat64_args /* { 186 1.2.2.2 bouyer syscallarg(const char *) path; 187 1.2.2.2 bouyer syscallarg(struct linux_stat64 *) sp; 188 1.2.2.2 bouyer } */ *uap = v; 189 1.2.2.2 bouyer 190 1.2.2.2 bouyer return linux_do_stat64(p, uap, retval, 0); 191 1.2.2.2 bouyer } 192 1.2.2.2 bouyer 193 1.2.2.2 bouyer int 194 1.2.2.2 bouyer linux_sys_lstat64(p, v, retval) 195 1.2.2.2 bouyer struct proc *p; 196 1.2.2.2 bouyer void *v; 197 1.2.2.2 bouyer register_t *retval; 198 1.2.2.2 bouyer { 199 1.2.2.2 bouyer struct linux_sys_lstat64_args /* { 200 1.2.2.2 bouyer syscallarg(const char *) path; 201 1.2.2.2 bouyer syscallarg(struct linux_stat64 *) sp; 202 1.2.2.2 bouyer } */ *uap = v; 203 1.2.2.2 bouyer 204 1.2.2.2 bouyer return linux_do_stat64(p, uap, retval, 1); 205 1.2.2.2 bouyer } 206 1.2.2.2 bouyer 207 1.2.2.2 bouyer int 208 1.2.2.2 bouyer linux_sys_truncate64(p, v, retval) 209 1.2.2.2 bouyer struct proc *p; 210 1.2.2.2 bouyer void *v; 211 1.2.2.2 bouyer register_t *retval; 212 1.2.2.2 bouyer { 213 1.2.2.2 bouyer struct linux_sys_truncate64_args /* { 214 1.2.2.2 bouyer syscallarg(const char *) path; 215 1.2.2.2 bouyer syscallarg(off_t) length; 216 1.2.2.2 bouyer } */ *uap = v; 217 1.2.2.2 bouyer caddr_t sg = stackgap_init(p->p_emul); 218 1.2.2.2 bouyer 219 1.2.2.2 bouyer CHECK_ALT_EXIST(p, &sg, SCARG(uap, path)); 220 1.2.2.2 bouyer 221 1.2.2.2 bouyer return sys_truncate(p, uap, retval); 222 1.2.2.2 bouyer } 223
Indexes created Tue Sep 30 11:09:46 GMT 2025