/*  RPC code for the mount protocol

    ©1999 Joseph Walton

    This software is distributed under the terms of the GNU General Public
    License; either version 2 of the License, or (at your option) any
    later version.
*/

#include "mount.h"
#include "nfs.h"

#include "mount_functions.h"

/* This is actually a fairly large buffer */
static char pathBuffer[MNTPATHLEN + 1];

int mount_procedure(struct Call *call, int32 *ptr, int32 *limit,
    int32 *rptr, int32 *rlimit)
{
    if (call->c_version != MOUNT_VERSION) {
        *rptr++ = P_ENUM(PROG_MISMATCH);
        *rptr++ = P_UINT(MOUNT_VERSION);
        *rptr   = P_UINT(MOUNT_VERSION);
        return 8;
    }

    switch (call->c_procedure) {
        case MOUNT_PROC_NULL:
            *rptr = P_ENUM(SUCCESS);
            return 6;

        case MOUNT_PROC_MNT:
            ptr = getString(ptr, limit, pathBuffer, sizeof(pathBuffer));

            if (!ptr) {
                *rptr = P_ENUM(GARBAGE_ARGS);
                return 6;
            }

            *rptr++ = P_ENUM(SUCCESS);

            if (NFS_OK == (*rptr = mountproc_mnt(call, pathBuffer, rptr + 1)))
            {
                return 7 + INT32S(NFS_FHSIZE);
            }

            /* Failed, so we return without the handle */
            return 7;

        case MOUNT_PROC_UMNT:
            ptr = getString(ptr, limit, pathBuffer, sizeof(pathBuffer));

            if (!ptr) {
                *rptr = P_ENUM(GARBAGE_ARGS);
                return 6;
            }

            /* Succeed at doing nothing */
            *rptr = P_ENUM(SUCCESS);

            mountproc_umnt(call, pathBuffer);
            return 6;

        default:
            *rptr = P_ENUM(PROC_UNAVAIL);
            return 6;
    }
}