/* $NetBSD: linux32_stat.c,v 1.17 2013/11/18 01:32:52 chs Exp $ */ /*- * Copyright (c) 2006 Emmanuel Dreyfus, all rights reserved. * * 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 Emmanuel Dreyfus * 4. The name of the author may not be used to endorse or promote * products derived from this software without specific prior written * permission. * * THIS SOFTWARE IS PROVIDED BY THE THE AUTHOR 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 AUTHOR 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. */ #include <sys/cdefs.h> __KERNEL_RCSID(0, "$NetBSD: linux32_stat.c,v 1.17 2013/11/18 01:32:52 chs Exp $"); #include <sys/types.h> #include <sys/param.h> #include <sys/fstypes.h> #include <sys/signal.h> #include <sys/dirent.h> #include <sys/kernel.h> #include <sys/namei.h> #include <sys/fcntl.h> #include <sys/filedesc.h> #include <sys/select.h> #include <sys/proc.h> #include <sys/ucred.h> #include <sys/swap.h> #include <sys/vfs_syscalls.h> #include <machine/types.h> #include <sys/syscallargs.h> #include <compat/netbsd32/netbsd32.h> #include <compat/netbsd32/netbsd32_conv.h> #include <compat/netbsd32/netbsd32_syscallargs.h> #include <compat/linux/common/linux_types.h> #include <compat/linux/common/linux_signal.h> #include <compat/linux/common/linux_machdep.h> #include <compat/linux/common/linux_misc.h> #include <compat/linux/common/linux_oldolduname.h> #include <compat/linux/common/linux_ipc.h> #include <compat/linux/common/linux_sem.h> #include <compat/linux/common/linux_fcntl.h> #include <compat/linux/linux_syscallargs.h> #include <compat/linux32/common/linux32_types.h> #include <compat/linux32/common/linux32_signal.h> #include <compat/linux32/common/linux32_machdep.h> #include <compat/linux32/common/linux32_sysctl.h> #include <compat/linux32/common/linux32_socketcall.h> #include <compat/linux32/linux32_syscallargs.h> static inline void bsd_to_linux32_stat(struct stat *, struct linux32_stat *); static inline void bsd_to_linux32_stat64(struct stat *, struct linux32_stat64 *); #define linux_fakedev(x,y) (x) static inline void bsd_to_linux32_stat(struct stat *st, struct linux32_stat *st32) { memset(st32, 0, sizeof(*st32)); st32->lst_dev = linux_fakedev(st->st_dev, 0); st32->lst_ino = st->st_ino; st32->lst_mode = st->st_mode; if (st->st_nlink >= (1 << 15)) st32->lst_nlink = (1 << 15) - 1; else st32->lst_nlink = st->st_nlink; st32->lst_uid = st->st_uid; st32->lst_gid = st->st_gid; st32->lst_rdev = linux_fakedev(st->st_rdev, 0); st32->lst_size = st->st_size; st32->lst_blksize = st->st_blksize; st32->lst_blocks = st->st_blocks; st32->lst_atime = st->st_atime; st32->lst_mtime = st->st_mtime; st32->lst_ctime = st->st_ctime; #ifdef LINUX32_STAT_HAS_NSEC st32->lst_atime_nsec = st->st_atimensec; st32->lst_mtime_nsec = st->st_mtimensec; st32->lst_ctime_nsec = st->st_ctimensec; #endif } static inline void bsd_to_linux32_stat64(struct stat *st, struct linux32_stat64 *st32) { memset(st32, 0, sizeof(*st32)); st32->lst_dev = linux_fakedev(st->st_dev, 0); st32->lst_ino = st->st_ino; st32->lst_mode = st->st_mode; if (st->st_nlink >= (1 << 15)) st32->lst_nlink = (1 << 15) - 1; else st32->lst_nlink = st->st_nlink; st32->lst_uid = st->st_uid; st32->lst_gid = st->st_gid; st32->lst_rdev = linux_fakedev(st->st_rdev, 0); st32->lst_size = st->st_size; st32->lst_blksize = st->st_blksize; st32->lst_blocks = st->st_blocks; st32->lst_atime = st->st_atime; st32->lst_mtime = st->st_mtime; st32->lst_ctime = st->st_ctime; #ifdef LINUX32_STAT64_HAS_NSEC st32->lst_atime_nsec = st->st_atimensec; st32->lst_mtime_nsec = st->st_mtimensec; st32->lst_ctime_nsec = st->st_ctimensec; #endif #ifdef LINUX32_STAT64_HAS_BROKEN_ST_INO st32->__lst_ino = st->st_ino; #endif } int linux32_sys_stat(struct lwp *l, const struct linux32_sys_stat_args *uap, register_t *retval) { /* { syscallarg(netbsd32_charp) path; syscallarg(linux32_statp) sp; } */ int error; struct stat st; struct linux32_stat st32; error = do_sys_stat(SCARG_P32(uap, path), FOLLOW, &st); if (error != 0) return error; bsd_to_linux32_stat(&st, &st32); return copyout(&st32, SCARG_P32(uap, sp), sizeof(st32)); } int linux32_sys_lstat(struct lwp *l, const struct linux32_sys_lstat_args *uap, register_t *retval) { /* { syscallarg(netbsd32_charp) path; syscallarg(linux32_statp) sp; } */ int error; struct stat st; struct linux32_stat st32; error = do_sys_stat(SCARG_P32(uap, path), NOFOLLOW, &st); if (error != 0) return error; bsd_to_linux32_stat(&st, &st32); return copyout(&st32, SCARG_P32(uap, sp), sizeof(st32)); } int linux32_sys_fstat(struct lwp *l, const struct linux32_sys_fstat_args *uap, register_t *retval) { /* { syscallarg(int) fd; syscallarg(linux32_statp) sp; } */ int error; struct stat st; struct linux32_stat st32; error = do_sys_fstat(SCARG(uap, fd), &st); if (error != 0) return error; bsd_to_linux32_stat(&st, &st32); return copyout(&st32, SCARG_P32(uap, sp), sizeof(st32)); } int linux32_sys_stat64(struct lwp *l, const struct linux32_sys_stat64_args *uap, register_t *retval) { /* { syscallarg(netbsd32_charp) path; syscallarg(linux32_stat64p) sp; } */ int error; struct stat st; struct linux32_stat64 st32; error = do_sys_stat(SCARG_P32(uap, path), FOLLOW, &st); if (error != 0) return error; bsd_to_linux32_stat64(&st, &st32); return copyout(&st32, SCARG_P32(uap, sp), sizeof(st32)); } int linux32_sys_lstat64(struct lwp *l, const struct linux32_sys_lstat64_args *uap, register_t *retval) { /* { syscallarg(netbsd32_charp) path; syscallarg(linux32_stat64p) sp; } */ int error; struct stat st; struct linux32_stat64 st32; error = do_sys_stat(SCARG_P32(uap, path), NOFOLLOW, &st); if (error != 0) return error; bsd_to_linux32_stat64(&st, &st32); return copyout(&st32, SCARG_P32(uap, sp), sizeof(st32)); } int linux32_sys_fstat64(struct lwp *l, const struct linux32_sys_fstat64_args *uap, register_t *retval) { /* { syscallarg(int) fd; syscallarg(linux32_stat64p) sp; } */ int error; struct stat st; struct linux32_stat64 st32; error = do_sys_fstat(SCARG(uap, fd), &st); if (error != 0) return error; bsd_to_linux32_stat64(&st, &st32); return copyout(&st32, SCARG_P32(uap, sp), sizeof(st32)); } int linux32_sys_fstatat64(struct lwp *l, const struct linux32_sys_fstatat64_args *uap, register_t *retval) { /* { syscallarg(int) fd; syscallarg(netbsd32_charp) path; syscallarg(linux32_stat64p) sp; syscallarg(int) flag; } */ int error, nd_flag; struct stat st; struct linux32_stat64 st32; if (SCARG(uap, flag) & LINUX_AT_SYMLINK_NOFOLLOW) nd_flag = NOFOLLOW; else nd_flag = FOLLOW; error = do_sys_statat(l, SCARG(uap, fd), SCARG_P32(uap, path), nd_flag, &st); if (error != 0) return error; bsd_to_linux32_stat64(&st, &st32); return copyout(&st32, SCARG_P32(uap, sp), sizeof st32); }