0a2d5a4e90
1. elfloader for shared object example: TencentOS-tiny\examples\elfloader_shared_object keil: TencentOS-tiny\board\TencentOS_tiny_EVB_MX_Plus\KEIL\elfloader_shared_object 2. elfloader for relocatable object: example: TencentOS-tiny\examples\elfloader_relocatable_object keil: TencentOS-tiny\board\TencentOS_tiny_EVB_MX_Plus\KEIL\elfloader_relocatable_object 3. TODO: - add icache/dcache flush when module is loaded - support more relocation type in elfloader_arch_relocate
124 lines
4.3 KiB
C
124 lines
4.3 KiB
C
/*----------------------------------------------------------------------------
|
|
* Tencent is pleased to support the open source community by making TencentOS
|
|
* available.
|
|
*
|
|
* Copyright (C) 2019 THL A29 Limited, a Tencent company. All rights reserved.
|
|
* If you have downloaded a copy of the TencentOS binary from Tencent, please
|
|
* note that the TencentOS binary is licensed under the BSD 3-Clause License.
|
|
*
|
|
* If you have downloaded a copy of the TencentOS source code from Tencent,
|
|
* please note that TencentOS source code is licensed under the BSD 3-Clause
|
|
* License, except for the third-party components listed below which are
|
|
* subject to different license terms. Your integration of TencentOS into your
|
|
* own projects may require compliance with the BSD 3-Clause License, as well
|
|
* as the other licenses applicable to the third-party components included
|
|
* within TencentOS.
|
|
*---------------------------------------------------------------------------*/
|
|
|
|
#ifndef _TOS_VFS_FILE_H_
|
|
#define _TOS_VFS_FILE_H_
|
|
|
|
typedef struct vfs_inode_st vfs_inode_t;
|
|
|
|
// why do you open so many files in a IOT system?
|
|
#define VFS_FILE_OPEN_MAX 20
|
|
|
|
// why your file path so deep?
|
|
#define VFS_PATH_MAX 31
|
|
|
|
// open flags(vfs_oflag_t): open method flags (3rd argument of tos_vfs_open)
|
|
#define VFS_OFLAG_READ 0x01
|
|
#define VFS_OFLAG_WRITE 0x02
|
|
#define VFS_OFLAG_EXISTING 0x00
|
|
#define VFS_OFLAG_CREATE_NEW 0x04
|
|
#define VFS_OFLAG_CREATE_ALWAYS 0x08
|
|
#define VFS_OFLAG_OPEN_ALWAYS 0x10
|
|
#define VFS_OFLAG_OPEN_APPEND 0x30
|
|
|
|
typedef enum vfs_whence_en {
|
|
VFS_SEEK_SET, /* the offset is set to offset bytes */
|
|
VFS_SEEK_CUR, /* the offset is set to its current location plus offset bytes */
|
|
VFS_SEEK_END, /* the offset is set to the size of the file plus offset bytes */
|
|
} vfs_whence_t;
|
|
|
|
/* type of a directory entry
|
|
> ls
|
|
d .
|
|
d ..
|
|
f .bashrc
|
|
f .profile
|
|
d Desktop
|
|
*/
|
|
typedef enum vfs_type_en {
|
|
VFS_TYPE_FILE,
|
|
VFS_TYPE_DIRECTORY,
|
|
VFS_TYPE_OTHER,
|
|
} vfs_type_t;
|
|
|
|
typedef enum vfs_mode_en {
|
|
VFS_MODE_READ_ONLY,
|
|
VFS_MODE_WRITE_ONLY,
|
|
VFS_MODE_READ_WRITE,
|
|
} vfs_mode_t;
|
|
|
|
typedef struct vfs_file_stat_st {
|
|
vfs_type_t type; /*file type */
|
|
vfs_mode_t mode; /* access mode */
|
|
size_t size; /* size of file/directory, in bytes */
|
|
uint32_t blk_size; /* block size used for filesystem I/O */
|
|
uint32_t blk_num; /* number of blocks allocated */
|
|
uint32_t atime; /* time of last access */
|
|
uint32_t mtime; /* time of last modification */
|
|
uint32_t ctime; /* time of last status change */
|
|
} vfs_fstat_t;
|
|
|
|
typedef struct vfs_fs_stat_st {
|
|
uint32_t type; /* type of filesystem */
|
|
size_t name_len; /* maximum length of filenames */
|
|
uint32_t blk_size; /* optimal block size for transfers */
|
|
uint32_t blk_num; /* total data blocks in the file system of this size */
|
|
uint32_t blk_free; /* free blocks in the file system */
|
|
uint32_t blk_avail; /* free blocks avail to non-superuser */
|
|
uint32_t file_num; /* total file nodes in the file system */
|
|
uint32_t file_free; /* free file nodes in the file system */
|
|
} vfs_fsstat_t;
|
|
|
|
typedef struct vfs_directory_entry_st {
|
|
vfs_type_t type; /* entry type */
|
|
size_t size; /* size */
|
|
uint32_t date; /* modified date */
|
|
uint32_t time; /* modified time */
|
|
char name[VFS_PATH_MAX];
|
|
} vfs_dirent_t;
|
|
|
|
typedef struct vfs_directory_st {
|
|
vfs_dirent_t dirent;
|
|
vfs_off_t pos; /*< read offset */
|
|
vfs_inode_t *inode;
|
|
void *private; /*< usually used to hook the real dirent struct of the certain filesystem */
|
|
} vfs_dir_t;
|
|
|
|
typedef struct vfs_file_st {
|
|
int flags;
|
|
vfs_off_t pos; /*< read offset */
|
|
vfs_inode_t *inode;
|
|
void *private; /*< usually used to hook the real file struct of the certain filesystem */
|
|
} vfs_file_t;
|
|
|
|
__KNL__ vfs_file_t *vfs_fd2file(int fd);
|
|
|
|
__KNL__ int vfs_file2fd(vfs_file_t *file);
|
|
|
|
__KNL__ vfs_file_t *vfs_file_alloc(void);
|
|
|
|
__KNL__ void vfs_file_free(vfs_file_t *file);
|
|
|
|
__KNL__ vfs_file_t *vfs_file_dup(vfs_file_t *file);
|
|
|
|
__KNL__ vfs_dir_t *vfs_dir_alloc(void);
|
|
|
|
__KNL__ void vfs_dir_free(vfs_dir_t *dir);
|
|
|
|
#endif /* _TOS_VFS_FILE_H_ */
|
|
|