/* $NetBSD: linux_file64.c,v 1.2 2000/12/12 22:24:56 jdolecek Exp $ */ /*- * Copyright (c) 1995, 1998, 2000 The NetBSD Foundation, Inc. * All rights reserved. * * This code is derived from software contributed to The NetBSD Foundation * by Frank van der Linden and Eric Haszlakiewicz. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by the NetBSD * Foundation, Inc. and its contributors. * 4. Neither the name of The NetBSD Foundation nor the names of its * contributors may be used to endorse or promote products derived * from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE * POSSIBILITY OF SUCH DAMAGE. */ /* * Linux 64bit filesystem calls. Used on 32bit archs, not used on 64bit ones. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include static void bsd_to_linux_stat __P((struct stat *, struct linux_stat64 *)); static int linux_do_stat64 __P((struct proc *, void *, register_t *, int)); /* * Convert a NetBSD stat structure to a Linux stat structure. * Only the order of the fields and the padding in the structure * is different. linux_fakedev is a machine-dependent function * which optionally converts device driver major/minor numbers * (XXX horrible, but what can you do against code that compares * things against constant major device numbers? sigh) */ static void bsd_to_linux_stat(bsp, lsp) struct stat *bsp; struct linux_stat64 *lsp; { lsp->lst_dev = bsp->st_dev; lsp->lst_ino = bsp->st_ino; lsp->lst_mode = (linux_mode_t)bsp->st_mode; if (bsp->st_nlink >= (1 << 15)) lsp->lst_nlink = (1 << 15) - 1; else lsp->lst_nlink = (linux_nlink_t)bsp->st_nlink; lsp->lst_uid = bsp->st_uid; lsp->lst_gid = bsp->st_gid; lsp->lst_rdev = linux_fakedev(bsp->st_rdev); lsp->lst_size = bsp->st_size; lsp->lst_blksize = bsp->st_blksize; lsp->lst_blocks = bsp->st_blocks; lsp->lst_atime = bsp->st_atime; lsp->lst_mtime = bsp->st_mtime; lsp->lst_ctime = bsp->st_ctime; } /* * The stat functions below are plain sailing. stat and lstat are handled * by one function to avoid code duplication. */ int linux_sys_fstat64(p, v, retval) struct proc *p; void *v; register_t *retval; { struct linux_sys_fstat64_args /* { syscallarg(int) fd; syscallarg(linux_stat64 *) sp; } */ *uap = v; struct sys___fstat13_args fsa; struct linux_stat64 tmplst; struct stat *st,tmpst; caddr_t sg; int error; sg = stackgap_init(p->p_emul); st = stackgap_alloc(&sg, sizeof (struct stat)); SCARG(&fsa, fd) = SCARG(uap, fd); SCARG(&fsa, sb) = st; if ((error = sys___fstat13(p, &fsa, retval))) return error; if ((error = copyin(st, &tmpst, sizeof tmpst))) return error; bsd_to_linux_stat(&tmpst, &tmplst); if ((error = copyout(&tmplst, SCARG(uap, sp), sizeof tmplst))) return error; return 0; } static int linux_do_stat64(p, v, retval, dolstat) struct proc *p; void *v; register_t *retval; int dolstat; { struct sys___stat13_args sa; struct linux_stat64 tmplst; struct stat *st, tmpst; caddr_t sg; int error; struct linux_sys_stat64_args *uap = v; sg = stackgap_init(p->p_emul); st = stackgap_alloc(&sg, sizeof (struct stat)); CHECK_ALT_EXIST(p, &sg, SCARG(uap, path)); SCARG(&sa, ub) = st; SCARG(&sa, path) = SCARG(uap, path); if ((error = (dolstat ? sys___lstat13(p, &sa, retval) : sys___stat13(p, &sa, retval)))) return error; if ((error = copyin(st, &tmpst, sizeof tmpst))) return error; bsd_to_linux_stat(&tmpst, &tmplst); if ((error = copyout(&tmplst, SCARG(uap, sp), sizeof tmplst))) return error; return 0; } int linux_sys_stat64(p, v, retval) struct proc *p; void *v; register_t *retval; { struct linux_sys_stat64_args /* { syscallarg(const char *) path; syscallarg(struct linux_stat64 *) sp; } */ *uap = v; return linux_do_stat64(p, uap, retval, 0); } int linux_sys_lstat64(p, v, retval) struct proc *p; void *v; register_t *retval; { struct linux_sys_lstat64_args /* { syscallarg(const char *) path; syscallarg(struct linux_stat64 *) sp; } */ *uap = v; return linux_do_stat64(p, uap, retval, 1); } int linux_sys_truncate64(p, v, retval) struct proc *p; void *v; register_t *retval; { struct linux_sys_truncate64_args /* { syscallarg(const char *) path; syscallarg(off_t) length; } */ *uap = v; caddr_t sg = stackgap_init(p->p_emul); CHECK_ALT_EXIST(p, &sg, SCARG(uap, path)); return sys_truncate(p, uap, retval); }