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libc: Move memfd related stuff to sys/mman.h

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follow the freebsd definition:
https://github.com/freebsd/freebsd-src/blob/master/sys/sys/mman.h#L207-L228

Signed-off-by: Xiang Xiao <xiaoxiang@xiaomi.com>
This commit is contained in:
Xiang Xiao 2023-02-13 06:42:04 +08:00 committed by Alin Jerpelea
parent 0ef073573a
commit dc2e9b8771
3 changed files with 24 additions and 73 deletions
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72
include/sys/memfd.h
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@ -1,72 +0,0 @@
/****************************************************************************
* include/sys/memfd.h
*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership. The
* ASF licenses this file to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance with the
* License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
* License for the specific language governing permissions and limitations
* under the License.
*
****************************************************************************/
#ifndef __INCLUDE_SYS_MEMFD_H
#define __INCLUDE_SYS_MEMFD_H
/****************************************************************************
* Included Files
****************************************************************************/
#include <fcntl.h>
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
#define MFD_CLOEXEC O_CLOEXEC
#define MFD_ALLOW_SEALING (1 << 16)
#define MFD_HUGETLB (1 << 17)
#define MFD_HUGE_SHIFT 26
#define MFD_HUGE_MASK 0x3f
#define MFD_HUGE_64KB (16 << MFD_HUGE_SHIFT)
#define MFD_HUGE_512KB (19 << MFD_HUGE_SHIFT)
#define MFD_HUGE_1MB (20 << MFD_HUGE_SHIFT)
#define MFD_HUGE_2MB (21 << MFD_HUGE_SHIFT)
#define MFD_HUGE_8MB (23 << MFD_HUGE_SHIFT)
#define MFD_HUGE_16MB (24 << MFD_HUGE_SHIFT)
#define MFD_HUGE_32MB (25 << MFD_HUGE_SHIFT)
#define MFD_HUGE_256MB (28 << MFD_HUGE_SHIFT)
#define MFD_HUGE_512MB (29 << MFD_HUGE_SHIFT)
#define MFD_HUGE_1GB (30 << MFD_HUGE_SHIFT)
#define MFD_HUGE_2GB (31 << MFD_HUGE_SHIFT)
#define MFD_HUGE_16GB (34 << MFD_HUGE_SHIFT)
/****************************************************************************
* Public Function Prototypes
****************************************************************************/
#ifdef __cplusplus
#define EXTERN extern "C"
extern "C"
{
#else
#define EXTERN extern
#endif
int memfd_create(FAR const char *name, unsigned int flags);
#undef EXTERN
#ifdef __cplusplus
}
#endif
#endif /* __INCLUDE_SYS_MEMFD_H */

22
include/sys/mman.h
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@ -128,6 +128,27 @@
#define POSIX_TYPED_MEM_ALLOCATE_CONTIG (1)
#define POSIX_TYPED_MEM_MAP_ALLOCATABLE (2)
/* Flags for memfd_create(). */
#define MFD_CLOEXEC O_CLOEXEC
#define MFD_ALLOW_SEALING (1 << 16)
#define MFD_HUGETLB (1 << 17)
#define MFD_HUGE_SHIFT 26
#define MFD_HUGE_MASK 0x3f
#define MFD_HUGE_64KB (16 << MFD_HUGE_SHIFT)
#define MFD_HUGE_512KB (19 << MFD_HUGE_SHIFT)
#define MFD_HUGE_1MB (20 << MFD_HUGE_SHIFT)
#define MFD_HUGE_2MB (21 << MFD_HUGE_SHIFT)
#define MFD_HUGE_8MB (23 << MFD_HUGE_SHIFT)
#define MFD_HUGE_16MB (24 << MFD_HUGE_SHIFT)
#define MFD_HUGE_32MB (25 << MFD_HUGE_SHIFT)
#define MFD_HUGE_256MB (28 << MFD_HUGE_SHIFT)
#define MFD_HUGE_512MB (29 << MFD_HUGE_SHIFT)
#define MFD_HUGE_1GB (30 << MFD_HUGE_SHIFT)
#define MFD_HUGE_2GB (31 << MFD_HUGE_SHIFT)
#define MFD_HUGE_16GB (34 << MFD_HUGE_SHIFT)
#if defined(CONFIG_FS_LARGEFILE) && defined(CONFIG_HAVE_LONG_LONG)
# define mmap64 mmap
#endif
@ -180,6 +201,7 @@ int posix_typed_mem_get_info(int fildes,
int posix_typed_mem_open(FAR const char *name, int oflag, int tflag);
int shm_open(FAR const char *name, int oflag, mode_t mode);
int shm_unlink(FAR const char *name);
int memfd_create(FAR const char *name, unsigned int flags);
#undef EXTERN
#if defined(__cplusplus)

3
libs/libc/misc/lib_memfd.c
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@ -22,8 +22,9 @@
* Included Files
****************************************************************************/
#include <sys/memfd.h>
#include <sys/mman.h>
#include <errno.h>
#include <fcntl.h>
#include <stdio.h>
#include <unistd.h>