105 lines
2.9 KiB
C
105 lines
2.9 KiB
C
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#ifndef __BK_FILESYSTEM_H_
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#define __BK_FILESYSTEM_H_
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#include <stddef.h>
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#include <unistd.h>
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#include <stdint.h>
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#include <sys/stat.h>
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//#include <sys/statfs.h>
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#include "bk_std_header.h" //for struct statfs, DIR, dirent
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struct bk_filesystem;
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struct bk_file;
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typedef struct {
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struct bk_filesystem *filesystem;
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struct dirent dir_entry;
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void *dir_data;
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} bk_dir;
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struct bk_filesystem_ops {
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int (*mount) (struct bk_filesystem *fs, unsigned long mount_flags, const void *data);
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int (*unmount) (struct bk_filesystem *fs);
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int (*unmount2) (struct bk_filesystem *fs, int flag);
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int (*mkfs) (const char *partition_name, const void *data);
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int (*statfs) (struct bk_filesystem *fs, struct statfs *buf);
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};
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struct bk_filesystem {
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char *mount_point;
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const struct bk_filesystem_ops *fs_ops;
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struct bk_file_ops *f_ops;
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void *fs_data;
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};
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struct bk_file_ops {
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int (*open) (struct bk_file *file, const char *path, int oflag);
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int (*close) (struct bk_file *file);
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ssize_t (*read) (struct bk_file *file, void *buf, size_t count);
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ssize_t (*write)(struct bk_file *file, const void *buf, size_t count);
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off_t (*lseek) (struct bk_file *file, off_t offset, int whence);
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int (*unlink) (struct bk_filesystem *fs, const char *pathname);
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int (*stat) (struct bk_filesystem *fs, const char *pathname, struct stat *statbuf);
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int (*rename) (struct bk_filesystem *fs, const char *oldpath, const char *newpath);
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int (*fsync) (struct bk_file *file);
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int (*ftruncate)(struct bk_file *file, off_t offset);
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int (*fcntl) (struct bk_file *file, int cmd, void *args); //cmd : F_GETFL, F_SETFL, fs special
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int (*opendir) (bk_dir *dir, const char *pathname);
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int (*readdir) (bk_dir *dir, struct dirent *entry);
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int (*closedir) (bk_dir *dir);
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int (*mkdir) (struct bk_filesystem *fs, const char *pathname);
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int (*rmdir) (struct bk_filesystem *fs, const char *pathname);
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#if CONFIG_STARBURST_AIDIALOG_SDK
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off_t (*ftell) (struct bk_file *file);
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int (*feof) (struct bk_file *file);
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#endif
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};
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#define BK_FILE_MAGIC 0xADCB
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struct bk_file {
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unsigned short magic;
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char *path;
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struct bk_filesystem *filesystem;
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struct bk_file_ops *f_ops;
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uint32_t flags;
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size_t size;
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off_t pos;
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void *f_data;
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};
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struct filesystem_proto {
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const char *fs_type;
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struct bk_filesystem_ops *fs_ops;
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struct bk_file_ops *f_ops;
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};
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int bk_filesystem_init(void);
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int bk_register_filesystem(const char *fs_type, struct bk_filesystem_ops *fs_ops, struct bk_file_ops *f_ops);
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int bk_vfs_mount(const char *source, const char *target,
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const char *fs_type, unsigned long mount_flags,
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const void *data);
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int bk_vfs_umount(const char *target);
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int bk_vfs_umount2(const char *target, int flags);
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struct bk_filesystem *bk_vfs_lookup(const char *path);
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int bk_vfs_mkfs(const char *partition_name, const char *fs_type, const void *data);
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int bk_vfs_statfs(const char *path, struct statfs *buf);
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#endif
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