#define OVL_TYPE_ORIGIN(type) ((type) & __OVL_PATH_ORIGIN)
#define OVL_XATTR_PREFIX XATTR_TRUSTED_PREFIX "overlay."
-#define OVL_XATTR_OPAQUE OVL_XATTR_PREFIX "opaque"
-#define OVL_XATTR_REDIRECT OVL_XATTR_PREFIX "redirect"
-#define OVL_XATTR_ORIGIN OVL_XATTR_PREFIX "origin"
-#define OVL_XATTR_IMPURE OVL_XATTR_PREFIX "impure"
-#define OVL_XATTR_NLINK OVL_XATTR_PREFIX "nlink"
-#define OVL_XATTR_UPPER OVL_XATTR_PREFIX "upper"
-#define OVL_XATTR_METACOPY OVL_XATTR_PREFIX "metacopy"
+
+enum ovl_xattr {
+ OVL_XATTR_OPAQUE,
+ OVL_XATTR_REDIRECT,
+ OVL_XATTR_ORIGIN,
+ OVL_XATTR_IMPURE,
+ OVL_XATTR_NLINK,
+ OVL_XATTR_UPPER,
+ OVL_XATTR_METACOPY,
+};
enum ovl_inode_flag {
/* Pure upper dir that may contain non pure upper entries */
#define OVL_FH_FID_OFFSET (OVL_FH_WIRE_OFFSET + \
offsetof(struct ovl_fb, fid))
+extern const char *ovl_xattr_table[];
+static inline const char *ovl_xattr(struct ovl_fs *ofs, enum ovl_xattr ox)
+{
+ return ovl_xattr_table[ox];
+}
+
static inline int ovl_do_rmdir(struct inode *dir, struct dentry *dentry)
{
int err = vfs_rmdir(dir, dentry);
return err;
}
-static inline int ovl_do_setxattr(struct dentry *dentry, const char *name,
- const void *value, size_t size, int flags)
+static inline ssize_t ovl_do_getxattr(struct ovl_fs *ofs, struct dentry *dentry,
+ enum ovl_xattr ox, void *value,
+ size_t size)
+{
+ const char *name = ovl_xattr(ofs, ox);
+ return vfs_getxattr(dentry, name, value, size);
+}
+
+static inline int ovl_do_setxattr(struct ovl_fs *ofs, struct dentry *dentry,
+ enum ovl_xattr ox, const void *value,
+ size_t size)
{
- int err = vfs_setxattr(dentry, name, value, size, flags);
- pr_debug("setxattr(%pd2, \"%s\", \"%*pE\", %zu, 0x%x) = %i\n",
- dentry, name, min((int)size, 48), value, size, flags, err);
+ const char *name = ovl_xattr(ofs, ox);
+ int err = vfs_setxattr(dentry, name, value, size, 0);
+ pr_debug("setxattr(%pd2, \"%s\", \"%*pE\", %zu, 0) = %i\n",
+ dentry, name, min((int)size, 48), value, size, err);
return err;
}
-static inline int ovl_do_removexattr(struct dentry *dentry, const char *name)
+static inline int ovl_do_removexattr(struct ovl_fs *ofs, struct dentry *dentry,
+ enum ovl_xattr ox)
{
+ const char *name = ovl_xattr(ofs, ox);
int err = vfs_removexattr(dentry, name);
pr_debug("removexattr(%pd2, \"%s\") = %i\n", dentry, name, err);
return err;
int ovl_copy_up_start(struct dentry *dentry, int flags);
void ovl_copy_up_end(struct dentry *dentry);
bool ovl_already_copied_up(struct dentry *dentry, int flags);
-bool ovl_check_origin_xattr(struct dentry *dentry);
-bool ovl_check_dir_xattr(struct dentry *dentry, const char *name);
+bool ovl_check_origin_xattr(struct ovl_fs *ofs, struct dentry *dentry);
+bool ovl_check_dir_xattr(struct super_block *sb, struct dentry *dentry,
+ enum ovl_xattr ox);
int ovl_check_setxattr(struct dentry *dentry, struct dentry *upperdentry,
- const char *name, const void *value, size_t size,
+ enum ovl_xattr ox, const void *value, size_t size,
int xerr);
int ovl_set_impure(struct dentry *dentry, struct dentry *upperdentry);
void ovl_set_flag(unsigned long flag, struct inode *inode);
int ovl_nlink_start(struct dentry *dentry);
void ovl_nlink_end(struct dentry *dentry);
int ovl_lock_rename_workdir(struct dentry *workdir, struct dentry *upperdir);
-int ovl_check_metacopy_xattr(struct dentry *dentry);
+int ovl_check_metacopy_xattr(struct ovl_fs *ofs, struct dentry *dentry);
bool ovl_is_metacopy_dentry(struct dentry *dentry);
-char *ovl_get_redirect_xattr(struct dentry *dentry, int padding);
-ssize_t ovl_getxattr(struct dentry *dentry, char *name, char **value,
- size_t padding);
+char *ovl_get_redirect_xattr(struct ovl_fs *ofs, struct dentry *dentry,
+ int padding);
-static inline bool ovl_is_impuredir(struct dentry *dentry)
+static inline bool ovl_is_impuredir(struct super_block *sb,
+ struct dentry *dentry)
{
- return ovl_check_dir_xattr(dentry, OVL_XATTR_IMPURE);
+ return ovl_check_dir_xattr(sb, dentry, OVL_XATTR_IMPURE);
}
/*
bool connected);
int ovl_check_origin_fh(struct ovl_fs *ofs, struct ovl_fh *fh, bool connected,
struct dentry *upperdentry, struct ovl_path **stackp);
-int ovl_verify_set_fh(struct dentry *dentry, const char *name,
- struct dentry *real, bool is_upper, bool set);
+int ovl_verify_set_fh(struct ovl_fs *ofs, struct dentry *dentry,
+ enum ovl_xattr ox, struct dentry *real, bool is_upper,
+ bool set);
struct dentry *ovl_index_upper(struct ovl_fs *ofs, struct dentry *index);
int ovl_verify_index(struct ovl_fs *ofs, struct dentry *index);
int ovl_get_index_name(struct dentry *origin, struct qstr *name);
unsigned int flags);
bool ovl_lower_positive(struct dentry *dentry);
-static inline int ovl_verify_origin(struct dentry *upper,
+static inline int ovl_verify_origin(struct ovl_fs *ofs, struct dentry *upper,
struct dentry *origin, bool set)
{
- return ovl_verify_set_fh(upper, OVL_XATTR_ORIGIN, origin, false, set);
+ return ovl_verify_set_fh(ofs, upper, OVL_XATTR_ORIGIN, origin,
+ false, set);
}
-static inline int ovl_verify_upper(struct dentry *index,
- struct dentry *upper, bool set)
+static inline int ovl_verify_upper(struct ovl_fs *ofs, struct dentry *index,
+ struct dentry *upper, bool set)
{
- return ovl_verify_set_fh(index, OVL_XATTR_UPPER, upper, true, set);
+ return ovl_verify_set_fh(ofs, index, OVL_XATTR_UPPER, upper, true, set);
}
/* readdir.c */
extern const struct file_operations ovl_dir_operations;
+struct file *ovl_dir_real_file(const struct file *file, bool want_upper);
int ovl_check_empty_dir(struct dentry *dentry, struct list_head *list);
void ovl_cleanup_whiteouts(struct dentry *upper, struct list_head *list);
void ovl_cache_free(struct list_head *list);
/* inode.c */
int ovl_set_nlink_upper(struct dentry *dentry);
int ovl_set_nlink_lower(struct dentry *dentry);
-unsigned int ovl_get_nlink(struct dentry *lowerdentry,
+unsigned int ovl_get_nlink(struct ovl_fs *ofs, struct dentry *lowerdentry,
struct dentry *upperdentry,
unsigned int fallback);
int ovl_setattr(struct dentry *dentry, struct iattr *attr);
ssize_t ovl_listxattr(struct dentry *dentry, char *list, size_t size);
struct posix_acl *ovl_get_acl(struct inode *inode, int type);
int ovl_update_time(struct inode *inode, struct timespec64 *ts, int flags);
-bool ovl_is_private_xattr(const char *name);
+bool ovl_is_private_xattr(struct super_block *sb, const char *name);
struct ovl_inode_params {
struct inode *newinode;
extern const struct file_operations ovl_file_operations;
int __init ovl_aio_request_cache_init(void);
void ovl_aio_request_cache_destroy(void);
+long ovl_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
+long ovl_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg);
/* copy_up.c */
int ovl_copy_up(struct dentry *dentry);
int ovl_copy_up_with_data(struct dentry *dentry);
int ovl_maybe_copy_up(struct dentry *dentry, int flags);
-int ovl_copy_xattr(struct dentry *old, struct dentry *new);
+int ovl_copy_xattr(struct super_block *sb, struct dentry *old,
+ struct dentry *new);
int ovl_set_attr(struct dentry *upper, struct kstat *stat);
struct ovl_fh *ovl_encode_real_fh(struct dentry *real, bool is_upper);
int ovl_set_origin(struct dentry *dentry, struct dentry *lower,
projects / linux-2.6-microblaze.git / blobdiff