#include <linux/bug.h>
/*
- * Notify this @dir inode about a change in the directory entry @dentry.
+ * Notify this @dir inode about a change in a child directory entry.
+ * The directory entry may have turned positive or negative or its inode may
+ * have changed (i.e. renamed over).
*
* Unlike fsnotify_parent(), the event will be reported regardless of the
* FS_EVENT_ON_CHILD mask on the parent inode.
*/
-static inline int fsnotify_dirent(struct inode *dir, struct dentry *dentry,
- __u32 mask)
+static inline void fsnotify_name(struct inode *dir, __u32 mask,
+ struct inode *child,
+ const struct qstr *name, u32 cookie)
{
- return fsnotify(dir, mask, d_inode(dentry), FSNOTIFY_EVENT_INODE,
- &dentry->d_name, 0);
+ fsnotify(dir, mask, child, FSNOTIFY_EVENT_INODE, name, cookie);
}
-/* Notify this dentry's parent about a child's events. */
-static inline int fsnotify_parent(const struct path *path,
- struct dentry *dentry, __u32 mask)
+static inline void fsnotify_dirent(struct inode *dir, struct dentry *dentry,
+ __u32 mask)
{
- if (!dentry)
- dentry = path->dentry;
-
- return __fsnotify_parent(path, dentry, mask);
+ fsnotify_name(dir, mask, d_inode(dentry), &dentry->d_name, 0);
}
/*
- * Simple wrapper to consolidate calls fsnotify_parent()/fsnotify() when
- * an event is on a path.
+ * Simple wrappers to consolidate calls fsnotify_parent()/fsnotify() when
+ * an event is on a file/dentry.
*/
-static inline int fsnotify_path(struct inode *inode, const struct path *path,
- __u32 mask)
+static inline void fsnotify_dentry(struct dentry *dentry, __u32 mask)
+{
+ struct inode *inode = d_inode(dentry);
+
+ if (S_ISDIR(inode->i_mode))
+ mask |= FS_ISDIR;
+
+ fsnotify_parent(dentry, mask, inode, FSNOTIFY_EVENT_INODE);
+ fsnotify(inode, mask, inode, FSNOTIFY_EVENT_INODE, NULL, 0);
+}
+
+static inline int fsnotify_file(struct file *file, __u32 mask)
{
- int ret = fsnotify_parent(path, NULL, mask);
+ const struct path *path = &file->f_path;
+ struct inode *inode = file_inode(file);
+ int ret;
+
+ if (file->f_mode & FMODE_NONOTIFY)
+ return 0;
+
+ if (S_ISDIR(inode->i_mode))
+ mask |= FS_ISDIR;
+ ret = fsnotify_parent(path->dentry, mask, path, FSNOTIFY_EVENT_PATH);
if (ret)
return ret;
+
return fsnotify(inode, mask, path, FSNOTIFY_EVENT_PATH, NULL, 0);
}
static inline int fsnotify_perm(struct file *file, int mask)
{
int ret;
- const struct path *path = &file->f_path;
- struct inode *inode = file_inode(file);
__u32 fsnotify_mask = 0;
- if (file->f_mode & FMODE_NONOTIFY)
- return 0;
if (!(mask & (MAY_READ | MAY_OPEN)))
return 0;
+
if (mask & MAY_OPEN) {
fsnotify_mask = FS_OPEN_PERM;
if (file->f_flags & __FMODE_EXEC) {
- ret = fsnotify_path(inode, path, FS_OPEN_EXEC_PERM);
+ ret = fsnotify_file(file, FS_OPEN_EXEC_PERM);
if (ret)
return ret;
fsnotify_mask = FS_ACCESS_PERM;
}
- if (S_ISDIR(inode->i_mode))
- fsnotify_mask |= FS_ISDIR;
-
- return fsnotify_path(inode, path, fsnotify_mask);
+ return fsnotify_file(file, fsnotify_mask);
}
/*
mask |= FS_ISDIR;
}
- fsnotify(old_dir, old_dir_mask, source, FSNOTIFY_EVENT_INODE, old_name,
- fs_cookie);
- fsnotify(new_dir, new_dir_mask, source, FSNOTIFY_EVENT_INODE, new_name,
- fs_cookie);
+ fsnotify_name(old_dir, old_dir_mask, source, old_name, fs_cookie);
+ fsnotify_name(new_dir, new_dir_mask, source, new_name, fs_cookie);
if (target)
fsnotify_link_count(target);
* Note: We have to pass also the linked inode ptr as some filesystems leave
* new_dentry->d_inode NULL and instantiate inode pointer later
*/
-static inline void fsnotify_link(struct inode *dir, struct inode *inode, struct dentry *new_dentry)
+static inline void fsnotify_link(struct inode *dir, struct inode *inode,
+ struct dentry *new_dentry)
{
fsnotify_link_count(inode);
audit_inode_child(dir, new_dentry, AUDIT_TYPE_CHILD_CREATE);
- fsnotify(dir, FS_CREATE, inode, FSNOTIFY_EVENT_INODE, &new_dentry->d_name, 0);
+ fsnotify_name(dir, FS_CREATE, inode, &new_dentry->d_name, 0);
}
/*
*/
static inline void fsnotify_access(struct file *file)
{
- const struct path *path = &file->f_path;
- struct inode *inode = file_inode(file);
- __u32 mask = FS_ACCESS;
-
- if (S_ISDIR(inode->i_mode))
- mask |= FS_ISDIR;
-
- if (!(file->f_mode & FMODE_NONOTIFY))
- fsnotify_path(inode, path, mask);
+ fsnotify_file(file, FS_ACCESS);
}
/*
*/
static inline void fsnotify_modify(struct file *file)
{
- const struct path *path = &file->f_path;
- struct inode *inode = file_inode(file);
- __u32 mask = FS_MODIFY;
-
- if (S_ISDIR(inode->i_mode))
- mask |= FS_ISDIR;
-
- if (!(file->f_mode & FMODE_NONOTIFY))
- fsnotify_path(inode, path, mask);
+ fsnotify_file(file, FS_MODIFY);
}
/*
*/
static inline void fsnotify_open(struct file *file)
{
- const struct path *path = &file->f_path;
- struct inode *inode = file_inode(file);
__u32 mask = FS_OPEN;
- if (S_ISDIR(inode->i_mode))
- mask |= FS_ISDIR;
if (file->f_flags & __FMODE_EXEC)
mask |= FS_OPEN_EXEC;
- fsnotify_path(inode, path, mask);
+ fsnotify_file(file, mask);
}
/*
*/
static inline void fsnotify_close(struct file *file)
{
- const struct path *path = &file->f_path;
- struct inode *inode = file_inode(file);
- fmode_t mode = file->f_mode;
- __u32 mask = (mode & FMODE_WRITE) ? FS_CLOSE_WRITE : FS_CLOSE_NOWRITE;
+ __u32 mask = (file->f_mode & FMODE_WRITE) ? FS_CLOSE_WRITE :
+ FS_CLOSE_NOWRITE;
- if (S_ISDIR(inode->i_mode))
- mask |= FS_ISDIR;
-
- if (!(file->f_mode & FMODE_NONOTIFY))
- fsnotify_path(inode, path, mask);
+ fsnotify_file(file, mask);
}
/*
*/
static inline void fsnotify_xattr(struct dentry *dentry)
{
- struct inode *inode = dentry->d_inode;
- __u32 mask = FS_ATTRIB;
-
- if (S_ISDIR(inode->i_mode))
- mask |= FS_ISDIR;
-
- fsnotify_parent(NULL, dentry, mask);
- fsnotify(inode, mask, inode, FSNOTIFY_EVENT_INODE, NULL, 0);
+ fsnotify_dentry(dentry, FS_ATTRIB);
}
/*
*/
static inline void fsnotify_change(struct dentry *dentry, unsigned int ia_valid)
{
- struct inode *inode = dentry->d_inode;
__u32 mask = 0;
if (ia_valid & ATTR_UID)
if (ia_valid & ATTR_MODE)
mask |= FS_ATTRIB;
- if (mask) {
- if (S_ISDIR(inode->i_mode))
- mask |= FS_ISDIR;
-
- fsnotify_parent(NULL, dentry, mask);
- fsnotify(inode, mask, inode, FSNOTIFY_EVENT_INODE, NULL, 0);
- }
+ if (mask)
+ fsnotify_dentry(dentry, mask);
}
#endif /* _LINUX_FS_NOTIFY_H */
projects / linux-2.6-microblaze.git / blobdiff