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configfs: Add permission and ownership to configfs objects.

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configfs always made item and attribute ownership root.root and
permissions based on a umask of 022.  Add ->setattr() to allow
chown(2)/chmod(2), and persist the changes for the lifetime of the
items and attributes.

Signed-off-by: Joel Becker <joel.becker@oracle.com>
Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>
This commit is contained in:
Joel Becker
2006-01-25 13:31:07 -08:00
committed by Mark Fasheh
parent 62ca3d2603
commit 3d0f89bb16
8 changed files with 181 additions and 39 deletions
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11
fs/configfs/configfs_internal.h
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@@ -36,6 +36,7 @@ struct configfs_dirent {
int s_type;
umode_t s_mode;
struct dentry * s_dentry;
struct iattr * s_iattr;
};
#define CONFIGFS_ROOT 0x0001
@@ -48,10 +49,11 @@ struct configfs_dirent {
#define CONFIGFS_NOT_PINNED (CONFIGFS_ITEM_ATTR)
extern struct vfsmount * configfs_mount;
extern kmem_cache_t *configfs_dir_cachep;
extern int configfs_is_root(struct config_item *item);
extern struct inode * configfs_new_inode(mode_t mode);
extern struct inode * configfs_new_inode(mode_t mode, struct configfs_dirent *);
extern int configfs_create(struct dentry *, int mode, int (*init)(struct inode *));
extern int configfs_create_file(struct config_item *, const struct configfs_attribute *);
@@ -63,6 +65,7 @@ extern void configfs_hash_and_remove(struct dentry * dir, const char * name);
extern const unsigned char * configfs_get_name(struct configfs_dirent *sd);
extern void configfs_drop_dentry(struct configfs_dirent *sd, struct dentry *parent);
extern int configfs_setattr(struct dentry *dentry, struct iattr *iattr);
extern int configfs_pin_fs(void);
extern void configfs_release_fs(void);
@@ -120,8 +123,10 @@ static inline struct config_item *configfs_get_config_item(struct dentry *dentry
static inline void release_configfs_dirent(struct configfs_dirent * sd)
{
if (!(sd->s_type & CONFIGFS_ROOT))
kfree(sd);
if (!(sd->s_type & CONFIGFS_ROOT)) {
kfree(sd->s_iattr);
kmem_cache_free(configfs_dir_cachep, sd);
}
}
static inline struct configfs_dirent * configfs_get(struct configfs_dirent * sd)