FreeBSD/Linux Kernel Cross Reference
sys/compat/linux32/common/linux32_stat.c

     /*      $NetBSD: linux32_stat.c,v 1.11 2008/03/21 21:54:58 ad 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 1.11 2008/03/21 21:54:58 ad 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/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 linux32_from_stat(struct stat *, struct linux32_stat64 *);
    
    #define linux_fakedev(x,y) (x)
    static inline void
    linux32_from_stat(struct stat *st, struct linux32_stat64 *st32)
    {
            bzero(st32, 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
   
           return;
   }
   
   int
   linux32_sys_stat64(struct lwp *l, const struct linux32_sys_stat64_args *uap, register_t *retval)
   {
           /* {
                   syscallarg(netbsd32_charp) path;
                   syscallarg(linux32_statp) sp;
           } */
           int error;
           struct stat st;
           struct linux32_stat64 st32;
           struct linux32_stat64 *st32p;
           const char *path = SCARG_P32(uap, path);
           
           error = do_sys_stat(path, FOLLOW, &st);
           if (error != 0)
                   return error;
   
           linux32_from_stat(&st, &st32);
   
           st32p = SCARG_P32(uap, sp);
   
           return copyout(&st32, st32p, sizeof(*st32p));
   }
   
   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;
           struct linux32_stat64 *st32p;
           const char *path = SCARG_P32(uap, path);
           
           error = do_sys_stat(path, NOFOLLOW, &st);
           if (error != 0)
                   return error;
   
           linux32_from_stat(&st, &st32);
   
           st32p = SCARG_P32(uap, sp);
   
           return copyout(&st32, st32p, sizeof(*st32p));
   }
   
   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;
           struct linux32_stat64 *st32p;
   
           error = do_sys_fstat(SCARG(uap, fd), &st);
           if (error != 0)
                   return error;
   
           linux32_from_stat(&st, &st32);
   
           st32p = SCARG_P32(uap, sp);
   
           return copyout(&st32, st32p, sizeof(*st32p));
   }

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