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This commit is contained in:
Simon Gardling
2024-09-10 13:03:02 -04:00
parent 53c617d779
commit d66450e427
381 changed files with 28864 additions and 34170 deletions
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153
kern/include/vnode.h
View File

@@ -34,7 +34,6 @@
struct uio;
struct stat;
/*
* A struct vnode is an abstract representation of a file.
*
@@ -49,14 +48,14 @@ struct stat;
* Note: vn_fs may be null if the vnode refers to a device.
*/
struct vnode {
int vn_refcount; /* Reference count */
struct spinlock vn_countlock; /* Lock for vn_refcount */
int vn_refcount; /* Reference count */
struct spinlock vn_countlock; /* Lock for vn_refcount */
struct fs *vn_fs; /* Filesystem vnode belongs to */
struct fs *vn_fs; /* Filesystem vnode belongs to */
void *vn_data; /* Filesystem-specific data */
void *vn_data; /* Filesystem-specific data */
const struct vnode_ops *vn_ops; /* Functions on this vnode */
const struct vnode_ops *vn_ops; /* Functions on this vnode */
};
/*
@@ -175,82 +174,74 @@ struct vnode {
* vnode handed back.
*/
#define VOP_MAGIC 0xa2b3c4d5
#define VOP_MAGIC 0xa2b3c4d5
struct vnode_ops {
unsigned long vop_magic; /* should always be VOP_MAGIC */
unsigned long vop_magic; /* should always be VOP_MAGIC */
int (*vop_eachopen)(struct vnode *object, int flags_from_open);
int (*vop_reclaim)(struct vnode *vnode);
int (*vop_eachopen)(struct vnode *object, int flags_from_open);
int (*vop_reclaim)(struct vnode *vnode);
int (*vop_read)(struct vnode *file, struct uio *uio);
int (*vop_readlink)(struct vnode *link, struct uio *uio);
int (*vop_getdirentry)(struct vnode *dir, struct uio *uio);
int (*vop_write)(struct vnode *file, struct uio *uio);
int (*vop_ioctl)(struct vnode *object, int op, userptr_t data);
int (*vop_stat)(struct vnode *object, struct stat *statbuf);
int (*vop_gettype)(struct vnode *object, mode_t *result);
bool (*vop_isseekable)(struct vnode *object);
int (*vop_fsync)(struct vnode *object);
int (*vop_mmap)(struct vnode *file /* add stuff */);
int (*vop_truncate)(struct vnode *file, off_t len);
int (*vop_namefile)(struct vnode *file, struct uio *uio);
int (*vop_read)(struct vnode *file, struct uio *uio);
int (*vop_readlink)(struct vnode *link, struct uio *uio);
int (*vop_getdirentry)(struct vnode *dir, struct uio *uio);
int (*vop_write)(struct vnode *file, struct uio *uio);
int (*vop_ioctl)(struct vnode *object, int op, userptr_t data);
int (*vop_stat)(struct vnode *object, struct stat *statbuf);
int (*vop_gettype)(struct vnode *object, mode_t *result);
bool (*vop_isseekable)(struct vnode *object);
int (*vop_fsync)(struct vnode *object);
int (*vop_mmap)(struct vnode *file /* add stuff */);
int (*vop_truncate)(struct vnode *file, off_t len);
int (*vop_namefile)(struct vnode *file, struct uio *uio);
int (*vop_creat)(struct vnode *dir, const char *name, bool excl, mode_t mode,
struct vnode **result);
int (*vop_symlink)(struct vnode *dir, const char *contents, const char *name);
int (*vop_mkdir)(struct vnode *parentdir, const char *name, mode_t mode);
int (*vop_link)(struct vnode *dir, const char *name, struct vnode *file);
int (*vop_remove)(struct vnode *dir, const char *name);
int (*vop_rmdir)(struct vnode *dir, const char *name);
int (*vop_rename)(struct vnode *vn1, const char *name1, struct vnode *vn2,
const char *name2);
int (*vop_creat)(struct vnode *dir,
const char *name, bool excl, mode_t mode,
struct vnode **result);
int (*vop_symlink)(struct vnode *dir,
const char *contents, const char *name);
int (*vop_mkdir)(struct vnode *parentdir,
const char *name, mode_t mode);
int (*vop_link)(struct vnode *dir,
const char *name, struct vnode *file);
int (*vop_remove)(struct vnode *dir,
const char *name);
int (*vop_rmdir)(struct vnode *dir,
const char *name);
int (*vop_rename)(struct vnode *vn1, const char *name1,
struct vnode *vn2, const char *name2);
int (*vop_lookup)(struct vnode *dir,
char *pathname, struct vnode **result);
int (*vop_lookparent)(struct vnode *dir,
char *pathname, struct vnode **result,
char *buf, size_t len);
int (*vop_lookup)(struct vnode *dir, char *pathname, struct vnode **result);
int (*vop_lookparent)(struct vnode *dir, char *pathname,
struct vnode **result, char *buf, size_t len);
};
#define __VOP(vn, sym) (vnode_check(vn, #sym), (vn)->vn_ops->vop_##sym)
#define VOP_EACHOPEN(vn, flags) (__VOP(vn, eachopen)(vn, flags))
#define VOP_RECLAIM(vn) (__VOP(vn, reclaim)(vn))
#define VOP_EACHOPEN(vn, flags) (__VOP(vn, eachopen)(vn, flags))
#define VOP_RECLAIM(vn) (__VOP(vn, reclaim)(vn))
#define VOP_READ(vn, uio) (__VOP(vn, read)(vn, uio))
#define VOP_READLINK(vn, uio) (__VOP(vn, readlink)(vn, uio))
#define VOP_GETDIRENTRY(vn, uio) (__VOP(vn,getdirentry)(vn, uio))
#define VOP_WRITE(vn, uio) (__VOP(vn, write)(vn, uio))
#define VOP_IOCTL(vn, code, buf) (__VOP(vn, ioctl)(vn,code,buf))
#define VOP_STAT(vn, ptr) (__VOP(vn, stat)(vn, ptr))
#define VOP_GETTYPE(vn, result) (__VOP(vn, gettype)(vn, result))
#define VOP_ISSEEKABLE(vn) (__VOP(vn, isseekable)(vn))
#define VOP_FSYNC(vn) (__VOP(vn, fsync)(vn))
#define VOP_MMAP(vn /*add stuff */) (__VOP(vn, mmap)(vn /*add stuff */))
#define VOP_TRUNCATE(vn, pos) (__VOP(vn, truncate)(vn, pos))
#define VOP_NAMEFILE(vn, uio) (__VOP(vn, namefile)(vn, uio))
#define VOP_READ(vn, uio) (__VOP(vn, read)(vn, uio))
#define VOP_READLINK(vn, uio) (__VOP(vn, readlink)(vn, uio))
#define VOP_GETDIRENTRY(vn, uio) (__VOP(vn, getdirentry)(vn, uio))
#define VOP_WRITE(vn, uio) (__VOP(vn, write)(vn, uio))
#define VOP_IOCTL(vn, code, buf) (__VOP(vn, ioctl)(vn, code, buf))
#define VOP_STAT(vn, ptr) (__VOP(vn, stat)(vn, ptr))
#define VOP_GETTYPE(vn, result) (__VOP(vn, gettype)(vn, result))
#define VOP_ISSEEKABLE(vn) (__VOP(vn, isseekable)(vn))
#define VOP_FSYNC(vn) (__VOP(vn, fsync)(vn))
#define VOP_MMAP(vn /*add stuff */) (__VOP(vn, mmap)(vn /*add stuff */))
#define VOP_TRUNCATE(vn, pos) (__VOP(vn, truncate)(vn, pos))
#define VOP_NAMEFILE(vn, uio) (__VOP(vn, namefile)(vn, uio))
#define VOP_CREAT(vn,nm,excl,mode,res) (__VOP(vn, creat)(vn,nm,excl,mode,res))
#define VOP_SYMLINK(vn, name, content) (__VOP(vn, symlink)(vn, name, content))
#define VOP_MKDIR(vn, name, mode) (__VOP(vn, mkdir)(vn, name, mode))
#define VOP_LINK(vn, name, vn2) (__VOP(vn, link)(vn, name, vn2))
#define VOP_REMOVE(vn, name) (__VOP(vn, remove)(vn, name))
#define VOP_RMDIR(vn, name) (__VOP(vn, rmdir)(vn, name))
#define VOP_RENAME(vn1,name1,vn2,name2)(__VOP(vn1,rename)(vn1,name1,vn2,name2))
#define VOP_CREAT(vn, nm, excl, mode, res) \
(__VOP(vn, creat)(vn, nm, excl, mode, res))
#define VOP_SYMLINK(vn, name, content) (__VOP(vn, symlink)(vn, name, content))
#define VOP_MKDIR(vn, name, mode) (__VOP(vn, mkdir)(vn, name, mode))
#define VOP_LINK(vn, name, vn2) (__VOP(vn, link)(vn, name, vn2))
#define VOP_REMOVE(vn, name) (__VOP(vn, remove)(vn, name))
#define VOP_RMDIR(vn, name) (__VOP(vn, rmdir)(vn, name))
#define VOP_RENAME(vn1, name1, vn2, name2) \
(__VOP(vn1, rename)(vn1, name1, vn2, name2))
#define VOP_LOOKUP(vn, name, res) (__VOP(vn, lookup)(vn, name, res))
#define VOP_LOOKPARENT(vn,nm,res,bf,ln) (__VOP(vn,lookparent)(vn,nm,res,bf,ln))
#define VOP_LOOKUP(vn, name, res) (__VOP(vn, lookup)(vn, name, res))
#define VOP_LOOKPARENT(vn, nm, res, bf, ln) \
(__VOP(vn, lookparent)(vn, nm, res, bf, ln))
/*
* Consistency check
@@ -263,15 +254,15 @@ void vnode_check(struct vnode *, const char *op);
void vnode_incref(struct vnode *);
void vnode_decref(struct vnode *);
#define VOP_INCREF(vn) vnode_incref(vn)
#define VOP_DECREF(vn) vnode_decref(vn)
#define VOP_INCREF(vn) vnode_incref(vn)
#define VOP_DECREF(vn) vnode_decref(vn)
/*
* Vnode initialization (intended for use by filesystem code)
* The reference count is initialized to 1.
*/
int vnode_init(struct vnode *, const struct vnode_ops *ops,
struct fs *fs, void *fsdata);
int vnode_init(struct vnode *, const struct vnode_ops *ops, struct fs *fs,
void *fsdata);
/*
* Vnode final cleanup (intended for use by filesystem code)
@@ -291,26 +282,24 @@ int vopfail_mmap_perm(struct vnode *vn /* add stuff */);
int vopfail_mmap_nosys(struct vnode *vn /* add stuff */);
int vopfail_truncate_isdir(struct vnode *vn, off_t pos);
int vopfail_creat_notdir(struct vnode *vn, const char *name, bool excl,
mode_t mode, struct vnode **result);
mode_t mode, struct vnode **result);
int vopfail_symlink_notdir(struct vnode *vn, const char *contents,
const char *name);
const char *name);
int vopfail_symlink_nosys(struct vnode *vn, const char *contents,
const char *name);
const char *name);
int vopfail_mkdir_notdir(struct vnode *vn, const char *name, mode_t mode);
int vopfail_mkdir_nosys(struct vnode *vn, const char *name, mode_t mode);
int vopfail_link_notdir(struct vnode *dir, const char *name,
struct vnode *file);
int vopfail_link_nosys(struct vnode *dir, const char *name,
struct vnode *file);
struct vnode *file);
int vopfail_link_nosys(struct vnode *dir, const char *name, struct vnode *file);
int vopfail_string_notdir(struct vnode *vn, const char *name);
int vopfail_string_nosys(struct vnode *vn, const char *name);
int vopfail_rename_notdir(struct vnode *fromdir, const char *fromname,
struct vnode *todir, const char *toname);
struct vnode *todir, const char *toname);
int vopfail_rename_nosys(struct vnode *fromdir, const char *fromname,
struct vnode *todir, const char *toname);
struct vnode *todir, const char *toname);
int vopfail_lookup_notdir(struct vnode *vn, char *path, struct vnode **result);
int vopfail_lookparent_notdir(struct vnode *vn, char *path,
struct vnode **result, char *buf, size_t len);
struct vnode **result, char *buf, size_t len);
#endif /* _VNODE_H_ */