vfs_ctx.h

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#pragma once
 
#include <kernel/config.h>
#include <kernel/fs/path.h>
#include <kernel/sync/lock.h>
 
#include <sys/bitmap.h>
#include <sys/io.h>
 
typedef struct file file_t;
typedef struct dir_entry dir_entry_t;
 
typedef struct
{
    path_t cwd;
    file_t* files[CONFIG_MAX_FD];
    bitmap_t allocBitmap; 
    uint64_t allocBitmapBuffer[BITMAP_BITS_TO_QWORDS(CONFIG_MAX_FD)];
    lock_t lock;
    bool initalized;
} vfs_ctx_t;
 
void vfs_ctx_init(vfs_ctx_t* ctx, const path_t* cwd);
 
void vfs_ctx_deinit(vfs_ctx_t* ctx);
 
file_t* vfs_ctx_get_file(vfs_ctx_t* ctx, fd_t fd);
 
uint64_t vfs_ctx_get_cwd(vfs_ctx_t* ctx, path_t* outCwd);
 
uint64_t vfs_ctx_set_cwd(vfs_ctx_t* ctx, const path_t* cwd);
 
fd_t vfs_ctx_alloc_fd(vfs_ctx_t* ctx, file_t* file);
 
fd_t vfs_ctx_set_fd(vfs_ctx_t* ctx, fd_t fd, file_t* file);
 
uint64_t vfs_ctx_free_fd(vfs_ctx_t* ctx, fd_t fd);
 
fd_t vfs_ctx_dup(vfs_ctx_t* ctx, fd_t oldFd);
 
fd_t vfs_ctx_dup2(vfs_ctx_t* ctx, fd_t oldFd, fd_t newFd);