source: trunk/kernel/syscalls/shared_include/shared_mman.h @ 594

Last change on this file since 594 was 594, checked in by alain, 3 years ago

Fix various bugs in sys_stat() and sys_mmap() functions.
Improve debug in other functions.

File size: 2.7 KB
Line 
1/*
2 * shred_mman.h - Shared structures & mnemonics used by the <mman.h> user library.
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#ifndef _SHARED_MMAN_H_
25#define _SHARED_MMAN_H_
26
27/*******************************************************************************************
28 * These structure are used by the mmap() syscall().
29 ******************************************************************************************/
30
31typedef enum
32{
33    PROT_NONE   = 0x0,         /*! no access                                              */
34    PROT_EXEC   = 0x1,         /*! executable                                             */
35    PROT_WRITE  = 0x2,         /*! writable                                               */
36    PROT_READ   = 0x4,         /*! readable                                               */
37}
38mmap_prot_t;
39
40typedef enum
41{
42    MAP_FILE    = 0x00000000,  /*! map an open file defined by its fdid                   */ 
43    MAP_ANON    = 0x00000001,  /*! map an anonymous vseg in local cluster                 */
44    MAP_REMOTE  = 0x00000002,  /*! map an anonymous vseg in remote cluster (cxy == fdid)  */
45    MAP_PRIVATE = 0x00000010,  /*! modifications are private to the calling process       */
46    MAP_SHARED  = 0x00000020,  /*! modifications are shared                               */
47    MAP_FIXED   = 0x00000100,  /*! non supported (user defined base address)              */
48}
49mmap_flags_t;
50
51typedef struct mmap_attr_s
52{
53        void         * addr;       /*! requested virtual address (unused : should be NULL)    */
54        unsigned int   length;     /*! requested vseg size (bytes)                            */
55        unsigned int   prot;       /*! access modes                                           */
56        unsigned int   flags;      /*! MAP_FILE / MAP_ANON / MAP_PRIVATE / MAP_SHARED         */
57        unsigned int   fdid;       /*! file descriptor index (if MAP_FILE)                    */
58        unsigned int   offset;     /*! file offset (if MAP_FILE)                              */
59}
60mmap_attr_t;
61
62#endif
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