Subversion Repositories c0or1k

/*

 * l4/posix glue for open()

 *

 * Copyright (C) 2007 Bahadir Balban

 */

#include <errno.h>

#include <stdio.h>

#include <stdarg.h>

#include <string.h>

#include <sys/shm.h>

#include <sys/types.h>

#include <sys/stat.h>

#include <l4lib/ipcdefs.h>

#include <l4lib/utcb.h>

#include <fcntl.h>

#include <l4/macros.h>

#include INC_GLUE(memory.h)

#include <shpage.h>

#include <libposix.h>

static inline int l4_open(const char *pathname, int flags, mode_t mode)

{

        int fd;

        utcb_full_strcpy_from(pathname);

        write_mr(L4SYS_ARG0, flags);

        write_mr(L4SYS_ARG1, (u32)mode);

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

        if ((fd = l4_sendrecv_full(pagerid, pagerid, L4_IPC_TAG_OPEN)) < 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: OPEN Error: %d, for path %s\n",

                       __FUNCTION__, fd, pathname);

                return fd;

        }

        return fd;

}

int open(const char *pathname, int oflag, ...)

{

        int ret;

        mode_t mode = 0;

        if (oflag & O_CREAT) {

                va_list arg;

                va_start(arg, oflag);

                mode = va_arg(arg, mode_t);

                va_end(arg);

        }

        ret = l4_open(pathname, oflag, mode);

        /* If error, return positive error code */

        if (ret < 0) {

                errno = -ret;

                return -1;

        }

        /* else return value */

        return ret;

}