133 lines
2.8 KiB
C
Executable File
133 lines
2.8 KiB
C
Executable File
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
|
|
/* All Rights Reserved */
|
|
|
|
/* THIS IS UNPUBLISHED PROPRIETARY SOURCE CODE OF AT&T */
|
|
/* The copyright notice above does not evidence any */
|
|
/* actual or intended publication of such source code. */
|
|
|
|
/*
|
|
* +++++++++++++++++++++++++++++++++++++++++++++++++++++++++
|
|
* PROPRIETARY NOTICE (Combined)
|
|
*
|
|
* This source code is unpublished proprietary information
|
|
* constituting, or derived under license from AT&T's UNIX(r) System V.
|
|
* In addition, portions of such source code were derived from Berkeley
|
|
* 4.3 BSD under license from the Regents of the University of
|
|
* California.
|
|
*
|
|
*
|
|
*
|
|
* Copyright Notice
|
|
*
|
|
* Notice of copyright on this source code product does not indicate
|
|
* publication.
|
|
*
|
|
* (c) 1986,1987,1988,1989,1993 Sun Microsystems, Inc
|
|
* (c) 1983,1984,1985,1986,1987,1988,1989 AT&T.
|
|
* All rights reserved.
|
|
*
|
|
*/
|
|
|
|
#pragma ident "@(#)sysfs.c 1.1 94/10/11 SMI" /* SVr4 1.42 */
|
|
|
|
#include <sys/types.h>
|
|
#include <sys/t_lock.h>
|
|
#include <sys/param.h>
|
|
#include <sys/errno.h>
|
|
#include <sys/fstyp.h>
|
|
#include <sys/systm.h>
|
|
#include <sys/mount.h>
|
|
#include <sys/vfs.h>
|
|
#include <sys/vnode.h>
|
|
#include <sys/cmn_err.h>
|
|
#include <sys/buf.h>
|
|
#include <sys/debug.h>
|
|
#include <sys/pathname.h>
|
|
|
|
/*
|
|
* System call to map fstype numbers to names, and vice versa.
|
|
*/
|
|
|
|
static int sysfsind(), sysfstyp();
|
|
|
|
int
|
|
sysfs(int opcode, int a1, int a2)
|
|
{
|
|
int error;
|
|
|
|
switch (opcode) {
|
|
case GETFSIND:
|
|
error = sysfsind((char *)a1);
|
|
break;
|
|
case GETFSTYP:
|
|
error = sysfstyp(a1, (char *)a2);
|
|
break;
|
|
case GETNFSTYP:
|
|
/*
|
|
* Return number of fstypes configured in the system.
|
|
*/
|
|
return (nfstype - 1);
|
|
default:
|
|
error = set_errno(EINVAL);
|
|
}
|
|
|
|
return (error);
|
|
}
|
|
|
|
static int
|
|
sysfsind(char *fsname)
|
|
{
|
|
/*
|
|
* Translate fs identifier to an index into the vfssw structure.
|
|
*/
|
|
register struct vfssw *vswp;
|
|
char fsbuf[FSTYPSZ];
|
|
int retval;
|
|
u_int len = 0;
|
|
|
|
retval = copyinstr(fsname, fsbuf, FSTYPSZ, &len);
|
|
if (retval == ENOENT) /* XXX */
|
|
retval = EINVAL; /* XXX */
|
|
if (len == 1) /* Includes null byte */
|
|
retval = EINVAL;
|
|
if (retval)
|
|
return (set_errno(retval));
|
|
/*
|
|
* Search the vfssw table for the fs identifier
|
|
* and return the index.
|
|
*/
|
|
if ((vswp = vfs_getvfssw(fsbuf)) != NULL) {
|
|
retval = vswp - vfssw;
|
|
RUNLOCK_VFSSW();
|
|
return (retval);
|
|
}
|
|
|
|
return (set_errno(EINVAL));
|
|
}
|
|
|
|
static int
|
|
sysfstyp(int index, char *cbuf)
|
|
{
|
|
/*
|
|
* Translate fstype index into an fs identifier.
|
|
*/
|
|
register char *src;
|
|
register struct vfssw *vswp;
|
|
char *osrc;
|
|
int error = 0;
|
|
|
|
if (index <= 0 || index >= nfstype)
|
|
return (set_errno(EINVAL));
|
|
RLOCK_VFSSW();
|
|
vswp = &vfssw[index];
|
|
|
|
osrc = src = vswp->vsw_name;
|
|
while (*src++)
|
|
;
|
|
|
|
if (copyout(osrc, cbuf, src - osrc))
|
|
error = set_errno(EFAULT);
|
|
RUNLOCK_VFSSW();
|
|
return (error);
|
|
}
|