3 * Copyright (C) 2011 Novell Inc.
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 as published by
7 * the Free Software Foundation.
10 #include <linux/kernel.h>
21 extern const char *ovl_opaque_xattr
;
23 static inline int ovl_do_rmdir(struct inode
*dir
, struct dentry
*dentry
)
25 int err
= vfs_rmdir(dir
, dentry
);
26 pr_debug("rmdir(%pd2) = %i\n", dentry
, err
);
30 static inline int ovl_do_unlink(struct inode
*dir
, struct dentry
*dentry
)
32 int err
= vfs_unlink(dir
, dentry
, NULL
);
33 pr_debug("unlink(%pd2) = %i\n", dentry
, err
);
37 static inline int ovl_do_link(struct dentry
*old_dentry
, struct inode
*dir
,
38 struct dentry
*new_dentry
, bool debug
)
40 int err
= vfs_link(old_dentry
, dir
, new_dentry
, NULL
);
42 pr_debug("link(%pd2, %pd2) = %i\n",
43 old_dentry
, new_dentry
, err
);
48 static inline int ovl_do_create(struct inode
*dir
, struct dentry
*dentry
,
49 umode_t mode
, bool debug
)
51 int err
= vfs_create(dir
, dentry
, mode
, true);
53 pr_debug("create(%pd2, 0%o) = %i\n", dentry
, mode
, err
);
57 static inline int ovl_do_mkdir(struct inode
*dir
, struct dentry
*dentry
,
58 umode_t mode
, bool debug
)
60 int err
= vfs_mkdir(dir
, dentry
, mode
);
62 pr_debug("mkdir(%pd2, 0%o) = %i\n", dentry
, mode
, err
);
66 static inline int ovl_do_mknod(struct inode
*dir
, struct dentry
*dentry
,
67 umode_t mode
, dev_t dev
, bool debug
)
69 int err
= vfs_mknod(dir
, dentry
, mode
, dev
);
71 pr_debug("mknod(%pd2, 0%o, 0%o) = %i\n",
72 dentry
, mode
, dev
, err
);
77 static inline int ovl_do_symlink(struct inode
*dir
, struct dentry
*dentry
,
78 const char *oldname
, bool debug
)
80 int err
= vfs_symlink(dir
, dentry
, oldname
);
82 pr_debug("symlink(\"%s\", %pd2) = %i\n", oldname
, dentry
, err
);
86 static inline int ovl_do_setxattr(struct dentry
*dentry
, const char *name
,
87 const void *value
, size_t size
, int flags
)
89 int err
= vfs_setxattr(dentry
, name
, value
, size
, flags
);
90 pr_debug("setxattr(%pd2, \"%s\", \"%*s\", 0x%x) = %i\n",
91 dentry
, name
, (int) size
, (char *) value
, flags
, err
);
95 static inline int ovl_do_removexattr(struct dentry
*dentry
, const char *name
)
97 int err
= vfs_removexattr(dentry
, name
);
98 pr_debug("removexattr(%pd2, \"%s\") = %i\n", dentry
, name
, err
);
102 static inline int ovl_do_rename(struct inode
*olddir
, struct dentry
*olddentry
,
103 struct inode
*newdir
, struct dentry
*newdentry
,
108 pr_debug("rename2(%pd2, %pd2, 0x%x)\n",
109 olddentry
, newdentry
, flags
);
111 err
= vfs_rename(olddir
, olddentry
, newdir
, newdentry
, NULL
, flags
);
114 pr_debug("...rename2(%pd2, %pd2, ...) = %i\n",
115 olddentry
, newdentry
, err
);
120 static inline int ovl_do_whiteout(struct inode
*dir
, struct dentry
*dentry
)
122 int err
= vfs_whiteout(dir
, dentry
);
123 pr_debug("whiteout(%pd2) = %i\n", dentry
, err
);
127 enum ovl_path_type
ovl_path_type(struct dentry
*dentry
);
128 u64
ovl_dentry_version_get(struct dentry
*dentry
);
129 void ovl_dentry_version_inc(struct dentry
*dentry
);
130 void ovl_path_upper(struct dentry
*dentry
, struct path
*path
);
131 void ovl_path_lower(struct dentry
*dentry
, struct path
*path
);
132 enum ovl_path_type
ovl_path_real(struct dentry
*dentry
, struct path
*path
);
133 struct dentry
*ovl_dentry_upper(struct dentry
*dentry
);
134 struct dentry
*ovl_dentry_lower(struct dentry
*dentry
);
135 struct dentry
*ovl_dentry_real(struct dentry
*dentry
);
136 struct dentry
*ovl_entry_real(struct ovl_entry
*oe
, bool *is_upper
);
137 struct ovl_dir_cache
*ovl_dir_cache(struct dentry
*dentry
);
138 void ovl_set_dir_cache(struct dentry
*dentry
, struct ovl_dir_cache
*cache
);
139 struct dentry
*ovl_workdir(struct dentry
*dentry
);
140 int ovl_want_write(struct dentry
*dentry
);
141 void ovl_drop_write(struct dentry
*dentry
);
142 bool ovl_dentry_is_opaque(struct dentry
*dentry
);
143 void ovl_dentry_set_opaque(struct dentry
*dentry
, bool opaque
);
144 bool ovl_is_whiteout(struct dentry
*dentry
);
145 void ovl_dentry_update(struct dentry
*dentry
, struct dentry
*upperdentry
);
146 struct dentry
*ovl_lookup(struct inode
*dir
, struct dentry
*dentry
,
148 struct file
*ovl_path_open(struct path
*path
, int flags
);
150 struct dentry
*ovl_upper_create(struct dentry
*upperdir
, struct dentry
*dentry
,
151 struct kstat
*stat
, const char *link
);
154 extern const struct file_operations ovl_dir_operations
;
155 int ovl_check_empty_dir(struct dentry
*dentry
, struct list_head
*list
);
156 void ovl_cleanup_whiteouts(struct dentry
*upper
, struct list_head
*list
);
157 void ovl_cache_free(struct list_head
*list
);
160 int ovl_setattr(struct dentry
*dentry
, struct iattr
*attr
);
161 int ovl_permission(struct inode
*inode
, int mask
);
162 int ovl_setxattr(struct dentry
*dentry
, const char *name
,
163 const void *value
, size_t size
, int flags
);
164 ssize_t
ovl_getxattr(struct dentry
*dentry
, const char *name
,
165 void *value
, size_t size
);
166 ssize_t
ovl_listxattr(struct dentry
*dentry
, char *list
, size_t size
);
167 int ovl_removexattr(struct dentry
*dentry
, const char *name
);
169 struct inode
*ovl_new_inode(struct super_block
*sb
, umode_t mode
,
170 struct ovl_entry
*oe
);
171 static inline void ovl_copyattr(struct inode
*from
, struct inode
*to
)
173 to
->i_uid
= from
->i_uid
;
174 to
->i_gid
= from
->i_gid
;
178 extern const struct inode_operations ovl_dir_inode_operations
;
179 struct dentry
*ovl_lookup_temp(struct dentry
*workdir
, struct dentry
*dentry
);
180 int ovl_create_real(struct inode
*dir
, struct dentry
*newdentry
,
181 struct kstat
*stat
, const char *link
,
182 struct dentry
*hardlink
, bool debug
);
183 void ovl_cleanup(struct inode
*dir
, struct dentry
*dentry
);
186 int ovl_copy_up(struct dentry
*dentry
);
187 int ovl_copy_up_one(struct dentry
*parent
, struct dentry
*dentry
,
188 struct path
*lowerpath
, struct kstat
*stat
,
190 int ovl_copy_xattr(struct dentry
*old
, struct dentry
*new);
191 int ovl_set_attr(struct dentry
*upper
, struct kstat
*stat
);