source: trunk/libs/mini-libc/dirent.c @ 457

Last change on this file since 457 was 457, checked in by alain, 3 years ago

This version modifies the exec syscall and fixes a large number of small bugs.
The version number has been updated (0.1)

File size: 1.7 KB
Line 
1/*
2 * dirent.c - User level <dirent> library implementation.
3 *
4 * Author     Alain Greiner (2016,2017,2018)
5 *
6 * Copyright (c) UPMC Sorbonne Universites
7 *
8 * This file is part of ALMOS-MKH.
9 *
10 * ALMOS-MKH is free software; you can redistribute it and/or modify it
11 * under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; version 2.0 of the License.
13 *
14 * ALMOS-MKH is distributed in the hope that it will be useful, but
15 * WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
17 * General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with ALMOS-MKH; if not, write to the Free Software Foundation,
21 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
22 */
23
24#include <dirent.h>
25#include <hal_shared_types.h>
26#include <hal_user.h>
27#include <syscalls_numbers.h>
28
29//////////////////////////////////////
30DIR * opendir( const char * pathname )
31{
32    DIR   * dirp; 
33    int     error;
34    error = hal_user_syscall( SYS_OPENDIR,
35                              (reg_t)pathname,
36                              (reg_t)&dirp, 0, 0 );
37    if( error ) return NULL;
38    else        return dirp;
39}
40
41/////////////////////////////////////
42struct dirent * readdir( DIR * dirp )
43{
44    struct dirent * dentp;
45    int             error;
46    error = hal_user_syscall( SYS_READDIR,
47                              (reg_t)dirp,
48                              (reg_t)&dentp, 0, 0 );
49    if( error ) return NULL;
50    else        return dentp;
51}
52
53//////////////////////////
54int closedir( DIR * dirp )
55{
56    return hal_user_syscall( SYS_CLOSEDIR,
57                             (reg_t)dirp, 0, 0, 0 );
58}
59
60
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