103 lines
2.7 KiB
C
103 lines
2.7 KiB
C
#ifndef __FS_H
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#define __FS_H
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#include <driver.h>
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#define FS_TYPE_CRAMFS 1
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#define FS_TYPE_RAMFS 2
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#define PATH_MAX 1024 /* include/linux/limits.h */
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struct partition;
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struct node_d;
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struct stat;
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struct dirent {
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char name[256];
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};
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struct dir {
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struct device_d *dev;
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struct fs_driver_d *fsdrv;
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struct node_d *node;
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struct dirent d;
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void *priv; /* private data for the fs driver */
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};
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typedef struct filep {
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struct device_d *dev; /* The device this FILE belongs to */
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ulong pos; /* current position in stream */
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ulong size; /* The size of this inode */
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void *inode; /* private to the filesystem driver */
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/* private fields. Mapping between FILE and filedescriptor number */
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int no;
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char in_use;
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} FILE;
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#define FS_DRIVER_NO_DEV 1
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struct fs_driver_d {
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ulong type;
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char *name;
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int (*probe) (struct device_d *dev);
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int (*mkdir)(struct device_d *dev, const char *pathname);
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/* create a file. The file is guaranteed to not exist */
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int (*create)(struct device_d *dev, const char *pathname, mode_t mode);
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/* Truncate a file to given size */
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int (*truncate)(struct device_d *dev, FILE *f, ulong size);
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int (*open)(struct device_d *dev, FILE *f, const char *pathname);
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int (*close)(struct device_d *dev, FILE *f);
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int (*read)(struct device_d *dev, FILE *f, void *buf, size_t size);
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int (*write)(struct device_d *dev, FILE *f, const void *buf, size_t size);
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struct dir* (*opendir)(struct device_d *dev, const char *pathname);
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struct dirent* (*readdir)(struct device_d *dev, struct dir *dir);
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int (*closedir)(struct device_d *dev, struct dir *dir);
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int (*stat)(struct device_d *dev, const char *file, struct stat *stat);
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struct driver_d drv;
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unsigned long flags;
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};
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struct fs_device_d {
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struct device_d *parent; /* the device we are associated with */
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struct device_d dev; /* our own device */
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struct fs_driver_d *driver;
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};
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int open(const char *pathname, int flags);
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int creat(const char *pathname, mode_t mode);
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int close(int fd);
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int stat(const char *filename, struct stat *s);
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int read(int fd, void *buf, size_t count);
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ssize_t write(int fd, const void *buf, size_t count);
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int ls(const char *path);
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int mkdir (const char *pathname);
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int mount (struct device_d *dev, char *fsname, char *path);
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int umount(const char *pathname);
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struct dir *opendir(const char *pathname);
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struct dirent *readdir(struct dir *dir);
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int closedir(struct dir *dir);
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char *mkmodestr(unsigned long mode, char *str);
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struct mtab_entry *get_mtab_entry_by_path(const char *path);
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struct mtab_entry {
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char path[PATH_MAX];
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struct mtab_entry *next;
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struct device_d *dev;
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};
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void normalise_path(char *path);
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#endif /* __FS_H */
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