/*
 * CDDL HEADER START
 *
 * The contents of this file are subject to the terms of the
 * Common Development and Distribution License, Version 1.0 only
 * (the "License").  You may not use this file except in compliance
 * with the License.
 *
 * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
 * or http://www.opensolaris.org/os/licensing.
 * See the License for the specific language governing permissions
 * and limitations under the License.
 *
 * When distributing Covered Code, include this CDDL HEADER in each
 * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
 * If applicable, add the following below this CDDL HEADER, with the
 * fields enclosed by brackets "[]" replaced with your own identifying
 * information: Portions Copyright [yyyy] [name of copyright owner]
 *
 * CDDL HEADER END
 */
/*
 * Copyright (c) 1998-2000 by Sun Microsystems, Inc.
 * All rights reserved.
 */

#include <sys/isa_defs.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include <sys/types.h>
#include <sys/statvfs.h>
#include <sys/sysmacros.h>
#include "libproc.h"

#ifdef _LP64
static void
statvfs_32_to_n(statvfs32_t *src, statvfs_t *dest)
{
        dest->f_bsize = src->f_bsize;
        dest->f_frsize = src->f_frsize;
        dest->f_blocks = src->f_blocks;
        dest->f_bfree = src->f_bfree;
        dest->f_bavail = src->f_bavail;
        dest->f_files = src->f_files;
        dest->f_ffree = src->f_ffree;
        dest->f_favail = src->f_favail;
        dest->f_fsid = src->f_fsid;
        (void) memcpy(dest->f_basetype, src->f_basetype,
                sizeof (dest->f_basetype));
        dest->f_flag = src->f_flag;
        dest->f_namemax = src->f_namemax;
        (void) memcpy(dest->f_fstr, src->f_fstr,
                sizeof (dest->f_fstr));
}
#endif  /* _LP64 */

/*
 * statvfs() system call -- executed by subject process
 */
int
pr_statvfs(struct ps_prochandle *Pr, const char *path, statvfs_t *buf)
{
        sysret_t rval;                  /* return value from statvfs() */
        argdes_t argd[2];               /* arg descriptors for statvfs() */
        argdes_t *adp = &argd[0];       /* first argument */
        int error;
#ifdef _LP64
        statvfs32_t statvfs32;
#endif  /* _LP64 */

        if (Pr == NULL)         /* no subject process */
                return (statvfs(path, buf));

        adp->arg_value = 0;
        adp->arg_object = (void *)path;
        adp->arg_type = AT_BYREF;
        adp->arg_inout = AI_INPUT;
        adp->arg_size = strlen(path)+1;
        adp++;                  /* move to buffer argument */

        adp->arg_value = 0;
        adp->arg_type = AT_BYREF;
        adp->arg_inout = AI_OUTPUT;
#ifdef _LP64
        if (Pstatus(Pr)->pr_dmodel == PR_MODEL_ILP32) {
                adp->arg_object = &statvfs32;
                adp->arg_size = sizeof (statvfs32);
        } else {
                adp->arg_object = buf;
                adp->arg_size = sizeof (*buf);
        }
#else   /* _LP64 */
        adp->arg_object = buf;
        adp->arg_size = sizeof (*buf);
#endif  /* _LP64 */

        error = Psyscall(Pr, &rval, SYS_statvfs, 2, &argd[0]);

        if (error) {
                errno = (error > 0)? error : ENOSYS;
                return (-1);
        }
#ifdef _LP64
        if (Pstatus(Pr)->pr_dmodel == PR_MODEL_ILP32)
                statvfs_32_to_n(&statvfs32, buf);
#endif  /* _LP64 */
        return (0);
}

/*
 * fstatvfs() system call -- executed by subject process
 */
int
pr_fstatvfs(struct ps_prochandle *Pr, int fd, statvfs_t *buf)
{
        sysret_t rval;                  /* return value from fstatvfs() */
        argdes_t argd[2];               /* arg descriptors for fstatvfs() */
        argdes_t *adp = &argd[0];       /* first argument */
        int error;
#ifdef _LP64
        statvfs32_t statvfs32;
#endif  /* _LP64 */

        if (Pr == NULL)         /* no subject process */
                return (fstatvfs(fd, buf));

        adp->arg_value = fd;
        adp->arg_object = NULL;
        adp->arg_type = AT_BYVAL;
        adp->arg_inout = AI_INPUT;
        adp->arg_size = 0;
        adp++;                  /* move to buffer argument */

        adp->arg_value = 0;
        adp->arg_type = AT_BYREF;
        adp->arg_inout = AI_OUTPUT;
#ifdef _LP64
        if (Pstatus(Pr)->pr_dmodel == PR_MODEL_ILP32) {
                adp->arg_object = &statvfs32;
                adp->arg_size = sizeof (statvfs32);
        } else {
                adp->arg_object = buf;
                adp->arg_size = sizeof (*buf);
        }
#else   /* _LP64 */
        adp->arg_object = buf;
        adp->arg_size = sizeof (*buf);
#endif  /* _LP64 */

        error = Psyscall(Pr, &rval, SYS_fstatvfs, 2, &argd[0]);

        if (error) {
                errno = (error > 0)? error : ENOSYS;
                return (-1);
        }
#ifdef _LP64
        if (Pstatus(Pr)->pr_dmodel == PR_MODEL_ILP32)
                statvfs_32_to_n(&statvfs32, buf);
#endif  /* _LP64 */
        return (0);
}