Subversion Repositories c0or1k

/*

 * l4/posix glue for close() and fsync()

 *

 * Copyright (C) 2007 Bahadir Balban

 */

#include <errno.h>

#include <stdio.h>

#include <unistd.h>

#include <l4lib/ipcdefs.h>

#include <l4lib/utcb.h>

#include <l4/macros.h>

#include INC_GLUE(memory.h)

#include <libposix.h>

static inline int l4_close(int fd)

{

        write_mr(L4SYS_ARG0, fd);

        /* Call pager with close() request. Check ipc error. */

        if ((fd = l4_sendrecv(pagerid, pagerid, L4_IPC_TAG_CLOSE)) < 0) {

                print_err("%s: L4 IPC Error: %d.\n", __FUNCTION__, fd);

                return fd;

        }

        /* Check if syscall itself was successful */

        if ((fd = l4_get_retval()) < 0) {

                print_err("%s: CLOSE Error: %d.\n", __FUNCTION__, fd);

                return fd;

        }

        return fd;

}

int close(int fd)

{

        int ret = l4_close(fd);

        /* If error, return positive error code */

        if (ret < 0) {

                errno = -ret;

                return -1;

        }

        /* else return value */

        return ret;

}

static inline int l4_fsync(int fd)

{

        write_mr(L4SYS_ARG0, fd);

        /* Call pager with close() request. Check ipc error. */

        if ((fd = l4_sendrecv(pagerid, pagerid, L4_IPC_TAG_FSYNC)) < 0) {

                print_err("%s: L4 IPC Error: %d.\n", __FUNCTION__, fd);

                return fd;

        }

        /* Check if syscall itself was successful */

        if ((fd = l4_get_retval()) < 0) {

                print_err("%s: CLOSE Error: %d.\n", __FUNCTION__, fd);

                return fd;

        }

        return fd;

}

int fsync(int fd)

{

        int ret = l4_fsync(fd);

        /* If error, return positive error code */

        if (ret < 0) {

                errno = -ret;

                return -1;

        }

        /* else return value */

        return ret;

}