74 lines
2.2 KiB
C
74 lines
2.2 KiB
C
/*
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Copyright (C) 2016-2019 The University of Notre Dame
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This software is distributed under the GNU General Public License.
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See the file LICENSE for details.
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*/
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#ifndef FS_H
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#define FS_H
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#define FS_FILE_READ (1 << 0)
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#define FS_FILE_WRITE (1 << 1)
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#include "kernel/types.h"
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#include "device.h"
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struct fs;
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struct fs_volume;
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struct fs_dirent;
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struct fs_file;
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/*
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fs_resolve is the most common interface to the filesystem code.
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Given a path, it interprets it in the context of the current
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process and returns a dirent.
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*/
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struct fs_dirent *fs_resolve(const char *path);
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/*
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fs_lookup returns the filesystem driver corresponding to
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the given name, such as "cdromfs" or "diskfs"
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*/
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struct fs *fs_lookup(const char *name);
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/*
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A volume is an instance of a filesystem stored on a block device.
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To begin using a filesystem, open the volume and retrieve the
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root directory entry with fs_volume_root.
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*/
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int fs_volume_format(struct fs *f, struct device *d);
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struct fs_volume *fs_volume_open(struct fs *f, struct device *d );
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struct fs_volume *fs_volume_addref(struct fs_volume *v);
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struct fs_dirent *fs_volume_root(struct fs_volume *vOB);
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int fs_volume_close(struct fs_volume *v);
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/*
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A fs_dirent represents one directory entry (file, dir, symlink, etc)
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in the filesystem tree. It contains the basic information about
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the object (size, type, etc) and may be read and written.
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*/
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struct fs_dirent *fs_dirent_traverse(struct fs_dirent *d, const char *path);
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struct fs_dirent *fs_dirent_mkdir(struct fs_dirent *d, const char *name);
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struct fs_dirent *fs_dirent_mkfile(struct fs_dirent *d, const char *name);
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struct fs_dirent *fs_dirent_addref(struct fs_dirent *d);
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int fs_dirent_read(struct fs_dirent *d, char *buffer, uint32_t length, uint32_t offset);
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int fs_dirent_write(struct fs_dirent *d, const char *buffer, uint32_t length, uint32_t offset);
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int fs_dirent_list(struct fs_dirent *d, char *buffer, int buffer_length);
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int fs_dirent_remove(struct fs_dirent *d, const char *name);
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int fs_dirent_size(struct fs_dirent *d );
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int fs_dirent_isdir(struct fs_dirent *d);
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int fs_dirent_close(struct fs_dirent *d);
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int fs_dirent_copy( struct fs_dirent *src, struct fs_dirent *dst, int depth );
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/*
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Register a new filesystem type, typically at system startup.
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*/
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void fs_register(struct fs *f);
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#endif
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