From 0ff21db9fcc39042b814dad8a4b7508710a75235 Mon Sep 17 00:00:00 2001 From: Eric Paris Date: Thu, 17 Dec 2009 21:24:29 -0500 Subject: fanotify: hooks the fanotify_mark syscall to the vfsmount code Create a new fanotify_mark flag which indicates we should attach the mark to the vfsmount holding the object referenced by dfd and pathname rather than the inode itself. Signed-off-by: Eric Paris --- fs/notify/fanotify/fanotify_user.c | 15 +++++++++++---- 1 file changed, 11 insertions(+), 4 deletions(-) (limited to 'fs') diff --git a/fs/notify/fanotify/fanotify_user.c b/fs/notify/fanotify/fanotify_user.c index db80a0d89d2..81267260d1b 100644 --- a/fs/notify/fanotify/fanotify_user.c +++ b/fs/notify/fanotify/fanotify_user.c @@ -485,7 +485,8 @@ SYSCALL_DEFINE(fanotify_mark)(int fanotify_fd, unsigned int flags, __u64 mask, int dfd, const char __user * pathname) { - struct inode *inode; + struct inode *inode = NULL; + struct vfsmount *mnt = NULL; struct fsnotify_group *group; struct file *filp; struct path path; @@ -515,16 +516,22 @@ SYSCALL_DEFINE(fanotify_mark)(int fanotify_fd, unsigned int flags, goto fput_and_out; /* inode held in place by reference to path; group by fget on fd */ - inode = path.dentry->d_inode; + if (!(flags & FAN_MARK_ON_VFSMOUNT)) + inode = path.dentry->d_inode; + else + mnt = path.mnt; group = filp->private_data; /* create/update an inode mark */ switch (flags & (FAN_MARK_ADD | FAN_MARK_REMOVE)) { case FAN_MARK_ADD: - ret = fanotify_add_inode_mark(group, inode, mask); + if (flags & FAN_MARK_ON_VFSMOUNT) + ret = fanotify_add_vfsmount_mark(group, mnt, mask); + else + ret = fanotify_add_inode_mark(group, inode, mask); break; case FAN_MARK_REMOVE: - ret = fanotify_remove_mark(group, inode, NULL, mask); + ret = fanotify_remove_mark(group, inode, mnt, mask); break; default: ret = -EINVAL; -- cgit v1.2.3