252 lines
7.4 KiB
C
252 lines
7.4 KiB
C
/* $NetBSD: linux32_stat.c,v 1.16 2009/06/04 17:59:30 njoly Exp $ */
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/*-
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* Copyright (c) 2006 Emmanuel Dreyfus, all rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Emmanuel Dreyfus
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* 4. The name of the author may not be used to endorse or promote
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* products derived from this software without specific prior written
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* permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE THE AUTHOR AND CONTRIBUTORS ``AS IS''
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
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* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__KERNEL_RCSID(0, "$NetBSD: linux32_stat.c,v 1.16 2009/06/04 17:59:30 njoly Exp $");
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#include <sys/types.h>
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#include <sys/param.h>
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#include <sys/fstypes.h>
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#include <sys/signal.h>
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#include <sys/dirent.h>
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#include <sys/kernel.h>
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#include <sys/namei.h>
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#include <sys/fcntl.h>
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#include <sys/filedesc.h>
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#include <sys/select.h>
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#include <sys/proc.h>
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#include <sys/ucred.h>
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#include <sys/swap.h>
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#include <sys/vfs_syscalls.h>
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#include <machine/types.h>
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#include <sys/syscallargs.h>
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#include <compat/netbsd32/netbsd32.h>
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#include <compat/netbsd32/netbsd32_conv.h>
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#include <compat/netbsd32/netbsd32_syscallargs.h>
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#include <compat/linux/common/linux_types.h>
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#include <compat/linux/common/linux_signal.h>
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#include <compat/linux/common/linux_machdep.h>
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#include <compat/linux/common/linux_misc.h>
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#include <compat/linux/common/linux_oldolduname.h>
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#include <compat/linux/common/linux_ipc.h>
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#include <compat/linux/common/linux_sem.h>
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#include <compat/linux/linux_syscallargs.h>
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#include <compat/linux32/common/linux32_types.h>
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#include <compat/linux32/common/linux32_signal.h>
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#include <compat/linux32/common/linux32_machdep.h>
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#include <compat/linux32/common/linux32_sysctl.h>
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#include <compat/linux32/common/linux32_socketcall.h>
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#include <compat/linux32/linux32_syscallargs.h>
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static inline void bsd_to_linux32_stat(struct stat *, struct linux32_stat *);
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static inline void bsd_to_linux32_stat64(struct stat *, struct linux32_stat64 *);
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#define linux_fakedev(x,y) (x)
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static inline void
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bsd_to_linux32_stat(struct stat *st, struct linux32_stat *st32)
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{
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memset(st32, 0, sizeof(*st32));
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st32->lst_dev = linux_fakedev(st->st_dev, 0);
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st32->lst_ino = st->st_ino;
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st32->lst_mode = st->st_mode;
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if (st->st_nlink >= (1 << 15))
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st32->lst_nlink = (1 << 15) - 1;
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else
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st32->lst_nlink = st->st_nlink;
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st32->lst_uid = st->st_uid;
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st32->lst_gid = st->st_gid;
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st32->lst_rdev = linux_fakedev(st->st_rdev, 0);
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st32->lst_size = st->st_size;
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st32->lst_blksize = st->st_blksize;
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st32->lst_blocks = st->st_blocks;
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st32->lst_atime = st->st_atime;
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st32->lst_mtime = st->st_mtime;
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st32->lst_ctime = st->st_ctime;
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#ifdef LINUX32_STAT_HAS_NSEC
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st32->lst_atime_nsec = st->st_atimensec;
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st32->lst_mtime_nsec = st->st_mtimensec;
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st32->lst_ctime_nsec = st->st_ctimensec;
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#endif
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}
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static inline void
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bsd_to_linux32_stat64(struct stat *st, struct linux32_stat64 *st32)
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{
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memset(st32, 0, sizeof(*st32));
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st32->lst_dev = linux_fakedev(st->st_dev, 0);
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st32->lst_ino = st->st_ino;
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st32->lst_mode = st->st_mode;
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if (st->st_nlink >= (1 << 15))
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st32->lst_nlink = (1 << 15) - 1;
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else
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st32->lst_nlink = st->st_nlink;
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st32->lst_uid = st->st_uid;
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st32->lst_gid = st->st_gid;
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st32->lst_rdev = linux_fakedev(st->st_rdev, 0);
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st32->lst_size = st->st_size;
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st32->lst_blksize = st->st_blksize;
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st32->lst_blocks = st->st_blocks;
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st32->lst_atime = st->st_atime;
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st32->lst_mtime = st->st_mtime;
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st32->lst_ctime = st->st_ctime;
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#ifdef LINUX32_STAT64_HAS_NSEC
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st32->lst_atime_nsec = st->st_atimensec;
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st32->lst_mtime_nsec = st->st_mtimensec;
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st32->lst_ctime_nsec = st->st_ctimensec;
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#endif
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#ifdef LINUX32_STAT64_HAS_BROKEN_ST_INO
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st32->__lst_ino = st->st_ino;
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#endif
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}
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int
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linux32_sys_stat(struct lwp *l, const struct linux32_sys_stat_args *uap, register_t *retval)
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{
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/* {
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syscallarg(netbsd32_charp) path;
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syscallarg(linux32_statp) sp;
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} */
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int error;
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struct stat st;
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struct linux32_stat st32;
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error = do_sys_stat(SCARG_P32(uap, path), FOLLOW, &st);
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if (error != 0)
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return error;
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bsd_to_linux32_stat(&st, &st32);
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return copyout(&st32, SCARG_P32(uap, sp), sizeof(st32));
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}
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int
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linux32_sys_lstat(struct lwp *l, const struct linux32_sys_lstat_args *uap, register_t *retval)
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{
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/* {
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syscallarg(netbsd32_charp) path;
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syscallarg(linux32_statp) sp;
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} */
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int error;
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struct stat st;
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struct linux32_stat st32;
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error = do_sys_stat(SCARG_P32(uap, path), NOFOLLOW, &st);
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if (error != 0)
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return error;
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bsd_to_linux32_stat(&st, &st32);
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return copyout(&st32, SCARG_P32(uap, sp), sizeof(st32));
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}
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int
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linux32_sys_fstat(struct lwp *l, const struct linux32_sys_fstat_args *uap, register_t *retval)
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{
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/* {
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syscallarg(int) fd;
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syscallarg(linux32_statp) sp;
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} */
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int error;
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struct stat st;
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struct linux32_stat st32;
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error = do_sys_fstat(SCARG(uap, fd), &st);
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if (error != 0)
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return error;
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bsd_to_linux32_stat(&st, &st32);
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return copyout(&st32, SCARG_P32(uap, sp), sizeof(st32));
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}
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int
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linux32_sys_stat64(struct lwp *l, const struct linux32_sys_stat64_args *uap, register_t *retval)
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{
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/* {
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syscallarg(netbsd32_charp) path;
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syscallarg(linux32_stat64p) sp;
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} */
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int error;
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struct stat st;
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struct linux32_stat64 st32;
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error = do_sys_stat(SCARG_P32(uap, path), FOLLOW, &st);
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if (error != 0)
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return error;
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bsd_to_linux32_stat64(&st, &st32);
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return copyout(&st32, SCARG_P32(uap, sp), sizeof(st32));
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}
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int
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linux32_sys_lstat64(struct lwp *l, const struct linux32_sys_lstat64_args *uap, register_t *retval)
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{
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/* {
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syscallarg(netbsd32_charp) path;
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syscallarg(linux32_stat64p) sp;
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} */
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int error;
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struct stat st;
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struct linux32_stat64 st32;
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error = do_sys_stat(SCARG_P32(uap, path), NOFOLLOW, &st);
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if (error != 0)
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return error;
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bsd_to_linux32_stat64(&st, &st32);
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return copyout(&st32, SCARG_P32(uap, sp), sizeof(st32));
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}
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int
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linux32_sys_fstat64(struct lwp *l, const struct linux32_sys_fstat64_args *uap, register_t *retval)
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{
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/* {
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syscallarg(int) fd;
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syscallarg(linux32_stat64p) sp;
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} */
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int error;
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struct stat st;
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struct linux32_stat64 st32;
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error = do_sys_fstat(SCARG(uap, fd), &st);
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if (error != 0)
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return error;
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bsd_to_linux32_stat64(&st, &st32);
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return copyout(&st32, SCARG_P32(uap, sp), sizeof(st32));
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}
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