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linux32_dirent.c revision 1.5 
      1 /*	$NetBSD: linux32_dirent.c,v 1.5 2007/12/26 13:50:48 njoly Exp $ */
      2 
      3 /*-
      4  * Copyright (c) 2006 Emmanuel Dreyfus, all rights reserved.
      5  *
      6  * Redistribution and use in source and binary forms, with or without
      7  * modification, are permitted provided that the following conditions
      8  * are met:
      9  * 1. Redistributions of source code must retain the above copyright
     10  *    notice, this list of conditions and the following disclaimer.
     11  * 2. Redistributions in binary form must reproduce the above copyright
     12  *    notice, this list of conditions and the following disclaimer in the
     13  *    documentation and/or other materials provided with the distribution.
     14  * 3. All advertising materials mentioning features or use of this software
     15  *    must display the following acknowledgement:
     16  *	This product includes software developed by Emmanuel Dreyfus
     17  * 4. The name of the author may not be used to endorse or promote
     18  *    products derived from this software without specific prior written
     19  *    permission.
     20  *
     21  * THIS SOFTWARE IS PROVIDED BY THE THE AUTHOR AND CONTRIBUTORS ``AS IS''
     22  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
     23  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     24  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS
     25  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     26  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     27  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     28  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     29  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     30  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     31  * POSSIBILITY OF SUCH DAMAGE.
     32  */
     33 
     34 #include <sys/cdefs.h>
     35 
     36 __KERNEL_RCSID(0, "$NetBSD: linux32_dirent.c,v 1.5 2007/12/26 13:50:48 njoly Exp $");
     37 
     38 #include <sys/types.h>
     39 #include <sys/param.h>
     40 #include <sys/fstypes.h>
     41 #include <sys/signal.h>
     42 #include <sys/dirent.h>
     43 #include <sys/kernel.h>
     44 #include <sys/fcntl.h>
     45 #include <sys/select.h>
     46 #include <sys/proc.h>
     47 #include <sys/ucred.h>
     48 #include <sys/swap.h>
     49 
     50 #include <machine/types.h>
     51 
     52 #include <sys/syscallargs.h>
     53 
     54 #include <compat/netbsd32/netbsd32.h>
     55 #include <compat/netbsd32/netbsd32_conv.h>
     56 #include <compat/netbsd32/netbsd32_syscallargs.h>
     57 
     58 #include <compat/linux/common/linux_types.h>
     59 #include <compat/linux/common/linux_signal.h>
     60 #include <compat/linux/common/linux_machdep.h>
     61 #include <compat/linux/common/linux_misc.h>
     62 #include <compat/linux/common/linux_oldolduname.h>
     63 #include <compat/linux/linux_syscallargs.h>
     64 
     65 #include <compat/linux32/common/linux32_types.h>
     66 #include <compat/linux32/common/linux32_signal.h>
     67 #include <compat/linux32/common/linux32_machdep.h>
     68 #include <compat/linux32/common/linux32_sysctl.h>
     69 #include <compat/linux32/common/linux32_socketcall.h>
     70 #include <compat/linux32/linux32_syscallargs.h>
     71 
     72 int
     73 linux32_sys_getdents(struct lwp *l, const struct linux32_sys_getdents_args *uap, register_t *retval)
     74 {
     75 	/* {
     76 		syscallcarg(int) fd;
     77 		syscallcarg(linux32_direntp_t) dent;
     78 		syscallcarg(unsigned int) count;
     79 	} */
     80 	struct linux_sys_getdents_args ua;
     81 
     82 	NETBSD32TO64_UAP(fd);
     83 	NETBSD32TOP_UAP(dent, struct linux_dirent);
     84 	NETBSD32TO64_UAP(count);
     85 
     86 	return linux_sys_getdents(l, &ua, retval);
     87 }
     88 
     89 
     90 int
     91 linux32_sys_getdents64(struct lwp *l, const struct linux32_sys_getdents64_args *uap, register_t *retval)
     92 {
     93 	/* {
     94 		syscallcarg(int) fd;
     95 		syscallcarg(linux32_dirent64p_t) dent;
     96 		syscallcarg(unsigned int) count;
     97 	} */
     98 	struct linux_sys_getdents64_args ua;
     99 
    100 	NETBSD32TO64_UAP(fd);
    101 	NETBSD32TOP_UAP(dent, struct linux_dirent64);
    102 	NETBSD32TO64_UAP(count);
    103 
    104 	return linux_sys_getdents64(l, &ua, retval);
    105 }
    106 
    107 int
    108 linux32_sys_readdir(struct lwp *l, const struct linux32_sys_readdir_args *uap, register_t *retval)
    109 {
    110 	/* {
    111 		syscallarg(int) fd;
    112 		syscallarg(struct linux32_direntp_t) dent;
    113 		syscallarg(unsigned int) count;
    114 	} */
    115 	int error;
    116 	struct linux32_sys_getdents_args da;
    117 
    118 	SCARG(&da, fd) = SCARG(uap, fd);
    119 	SCARG(&da, dent) = SCARG(uap, dent);
    120 	SCARG(&da, count) = 1;
    121 
    122 	error = linux32_sys_getdents(l, &da, retval);
    123 	if (error == 0 && *retval > 1)
    124 		*retval = 1;
    125 
    126 	return error;
    127 }
    128