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 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE
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 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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 * OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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 */
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 */
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/** @addtogroup FileSystemImpl
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* @{
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*/
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/* This file contains the procedures for opening, closing, and seeking on files. */
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/* Methods:
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/**
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 * do_open:   perform the OPEN system call
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 * do_close:  perform the CLOSE system call
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 * @file    open.c
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 * do_lseek:  perform the SEEK system call
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 * @brief   This file contains the procedures for opening, closing, and seeking on files.
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 */
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 */
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#include "fs.h"
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#include "fs.h"
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#include "block.h"
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#include "block.h"
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#include "file.h"
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#include "file.h"
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#include "fproc.h"
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#include "fproc.h"
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#include "inode.h"
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#include "inode.h"
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#include "param.h"
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#include "param.h"
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/**
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 * Perform the OPEN system call
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 */
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int do_open()
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int do_open()
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{
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{
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    /* Perform the open(file_name) system call */
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    /* Perform the open(file_name) system call */
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    fil_ptr->filp_flags = R_BIT;
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    fil_ptr->filp_flags = R_BIT;
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    return fd;
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    return fd;
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}
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}
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/**
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 * Perform the CLOSE system call
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 */
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int do_close()
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int do_close()
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{
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{
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    /* Perform the close(fd) system call. */
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    /* Perform the close(fd) system call. */
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    fp->fp_filp[fd] = NIL_FILP;
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    fp->fp_filp[fd] = NIL_FILP;
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    return OK;
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    return OK;
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}
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}
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/**
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 * Perform the SEEK system call
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 */
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int do_lseek()
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int do_lseek()
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{
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{
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    /* Perform the seek(ls_fd, offset, whence) system call. */
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    /* Perform the seek(ls_fd, offset, whence) system call. */
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    rfilp->filp_pos = pos;
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    rfilp->filp_pos = pos;
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    return pos;
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    return pos;
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}
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}
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/**
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 * }
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 */
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