77 lines
2.0 KiB
C
77 lines
2.0 KiB
C
#ifndef VFS_VFS_H_
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#define VFS_VFS_H_
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#include <stdint.h>
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#include <stddef.h>
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#include <stdbool.h>
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#include "spinlock/spinlock.h"
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#include "fs/portlfs/portlfs.h"
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#include "storedev/storedev.h"
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#include "sysdefs/ioctl.h"
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#include "compiler/attr.h"
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#define VFS_MOUNTPOINT_LABEL_MAX 128
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#define VFS_MOUNTPOINTS_MAX 30
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enum {
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VFS_LITTLEFS,
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};
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UNUSED static const char *vfs_strings[] = {
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"Little FS",
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};
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enum {
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VFS_FLAG_READ = 1<<0,
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VFS_FLAG_WRITE = 1<<1,
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VFS_FLAG_MAKE = 1<<2,
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};
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#define VFS_PATH_MAX 1024
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typedef struct VfsObj {
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SpinLock spinlock;
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void *extra;
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size_t extrasize;
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struct VfsMountPoint *vmp;
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char path[VFS_PATH_MAX];
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int32_t flags;
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int32_t (*read)(struct VfsObj *vobj, uint8_t *const buffer, size_t n, size_t off);
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int32_t (*write)(struct VfsObj *vobj, const uint8_t *const buffer, size_t n, size_t off);
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void (*cleanup)(struct VfsObj *vobj);
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} VfsObj;
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typedef struct VfsMountPoint {
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bool taken;
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uint8_t label[VFS_MOUNTPOINT_LABEL_MAX];
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int32_t fstype;
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StoreDev *backingsd;
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VfsObj *(*open)(struct VfsMountPoint *vmp, const char *path, uint32_t flags);
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int32_t (*cleanup)(struct VfsMountPoint *vmp);
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int32_t (*stat)(struct VfsMountPoint *vmp, const char *path, IoctlStat *statbuf);
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int32_t (*fetchdirent)(struct VfsMountPoint *vmp, const char *path, IoctlDirent *direntbuf, size_t idx);
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union {
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LittleFs littlefs;
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} fs;
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SpinLock spinlock;
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} VfsMountPoint;
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typedef struct {
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SpinLock spinlock;
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VfsMountPoint mountpoints[VFS_MOUNTPOINTS_MAX];
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} VfsTable;
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extern VfsTable VFS_TABLE;
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void vfs_init(void);
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int32_t vfs_unmount(char *mountpoint);
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int32_t vfs_mount(char *mountpoint, int32_t fstype, StoreDev *backingsd, bool format);
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void vfs_close(VfsObj *vobj);
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VfsObj *vfs_open(char *mountpoint, const char *path, uint32_t flags);
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int32_t vfs_stat(char *mountpoint, const char *path, IoctlStat *stat);
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int32_t vfs_fetchdirent(char *mountpoint, const char *path, IoctlDirent *direntbuf, size_t idx);
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#endif // VFS_VFS_H_
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