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ANDROID: fsnotify: Notify lower fs of open

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If the filesystem being watched supports d_canonical_path,
notify the lower filesystem of the open as well.

Change-Id: I2b1739e068afbaf5eb39950516072bff8345ebfe
Signed-off-by: Daniel Rosenberg <drosen@google.com>
Bug: 70706497
This commit is contained in:
Daniel Rosenberg
2018-01-23 15:02:50 -08:00
parent 6b508c8d77
commit 0989de294d
1 changed files with 7 additions and 0 deletions
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7
include/linux/fsnotify.h
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@@ -230,12 +230,19 @@ static inline void fsnotify_modify(struct file *file)
static inline void fsnotify_open(struct file *file)
{
struct path *path = &file->f_path;
struct path lower_path;
struct inode *inode = file_inode(file);
__u32 mask = FS_OPEN;
if (S_ISDIR(inode->i_mode))
mask |= FS_ISDIR;
if (path->dentry->d_op && path->dentry->d_op->d_canonical_path) {
path->dentry->d_op->d_canonical_path(path, &lower_path);
fsnotify_parent(&lower_path, NULL, mask);
fsnotify(lower_path.dentry->d_inode, mask, &lower_path, FSNOTIFY_EVENT_PATH, NULL, 0);
path_put(&lower_path);
}
fsnotify_parent(path, NULL, mask);
fsnotify(inode, mask, path, FSNOTIFY_EVENT_PATH, NULL, 0);
}