/* $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);
}