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freebsd_file.c revision 1.31 
      1 /*	$NetBSD: freebsd_file.c,v 1.31 2007/12/20 23:02:47 dsl Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1995 Frank van der Linden
      5  * All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. All advertising materials mentioning features or use of this software
     16  *    must display the following acknowledgement:
     17  *      This product includes software developed for the NetBSD Project
     18  *      by Frank van der Linden
     19  * 4. The name of the author may not be used to endorse or promote products
     20  *    derived from this software without specific prior written permission
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
     23  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
     24  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
     25  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
     26  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     27  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
     28  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
     29  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
     30  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
     31  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
     32  *
     33  *	from: linux_file.c,v 1.3 1995/04/04 04:21:30 mycroft Exp
     34  */
     35 
     36 #include <sys/cdefs.h>
     37 __KERNEL_RCSID(0, "$NetBSD: freebsd_file.c,v 1.31 2007/12/20 23:02:47 dsl Exp $");
     38 
     39 #if defined(_KERNEL_OPT)
     40 #include "fs_nfs.h"
     41 #endif
     42 
     43 #include <sys/param.h>
     44 #include <sys/systm.h>
     45 #include <sys/namei.h>
     46 #include <sys/proc.h>
     47 #include <sys/file.h>
     48 #include <sys/stat.h>
     49 #include <sys/filedesc.h>
     50 #include <sys/ioctl.h>
     51 #include <sys/kernel.h>
     52 #include <sys/mount.h>
     53 #include <sys/malloc.h>
     54 
     55 #include <sys/syscallargs.h>
     56 
     57 #include <compat/freebsd/freebsd_syscallargs.h>
     58 #include <compat/common/compat_util.h>
     59 #include <compat/sys/mount.h>
     60 
     61 #define	ARRAY_LENGTH(array)	(sizeof(array)/sizeof(array[0]))
     62 
     63 static const char * convert_from_freebsd_mount_type(int);
     64 
     65 static const char *
     66 convert_from_freebsd_mount_type(int type)
     67 {
     68 	static const char * const netbsd_mount_type[] = {
     69 		NULL,     /*  0 = MOUNT_NONE */
     70 		"ffs",	  /*  1 = "Fast" Filesystem */
     71 		"nfs",	  /*  2 = Network Filesystem */
     72 		"mfs",	  /*  3 = Memory Filesystem */
     73 		"msdos",  /*  4 = MSDOS Filesystem */
     74 		"lfs",	  /*  5 = Log-based Filesystem */
     75 		"lofs",	  /*  6 = Loopback filesystem */
     76 		"fdesc",  /*  7 = File Descriptor Filesystem */
     77 		"portal", /*  8 = Portal Filesystem */
     78 		"null",	  /*  9 = Minimal Filesystem Layer */
     79 		"umap",	  /* 10 = User/Group Identifier Remapping Filesystem */
     80 		"kernfs", /* 11 = Kernel Information Filesystem */
     81 		"procfs", /* 12 = /proc Filesystem */
     82 		"afs",	  /* 13 = Andrew Filesystem */
     83 		"cd9660", /* 14 = ISO9660 (aka CDROM) Filesystem */
     84 		"union",  /* 15 = Union (translucent) Filesystem */
     85 		NULL,     /* 16 = "devfs" - existing device Filesystem */
     86 #if 0 /* These filesystems don't exist in FreeBSD */
     87 		"adosfs", /* ?? = AmigaDOS Filesystem */
     88 #endif
     89 	};
     90 
     91 	if (type < 0 || type >= ARRAY_LENGTH(netbsd_mount_type))
     92 		return (NULL);
     93 	return (netbsd_mount_type[type]);
     94 }
     95 
     96 int
     97 freebsd_sys_mount(struct lwp *l, const struct freebsd_sys_mount_args *uap, register_t *retval)
     98 {
     99 	/* {
    100 		syscallarg(int) type;
    101 		syscallarg(char *) path;
    102 		syscallarg(int) flags;
    103 		syscallarg(void *) data;
    104 	} */
    105 	const char *type;
    106 	struct vfsops *vfsops;
    107 	register_t dummy;
    108 
    109 	if ((type = convert_from_freebsd_mount_type(SCARG(uap, type))) == NULL)
    110 		return ENODEV;
    111 	vfsops = vfs_getopsbyname(type);
    112 	if (vfsops == NULL)
    113 		return ENODEV;
    114 
    115 	return do_sys_mount(l, vfsops, NULL, SCARG(uap, path),
    116 	    SCARG(uap, flags), SCARG(uap, data), UIO_USERSPACE, 0, &dummy);
    117 }
    118 
    119 /* XXX - UNIX domain: int freebsd_sys_bind(int s, void *name, int namelen); */
    120 /* XXX - UNIX domain: int freebsd_sys_connect(int s, void *name, int namelen); */
    121