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authorEric Paris <eparis@redhat.com>2010-10-28 17:21:58 -0400
committerEric Paris <eparis@redhat.com>2010-10-28 17:22:15 -0400
commit4afeff8505cb8a38e36c1ef2bd3447c4b8f87367 (patch)
tree50a80d8773698813e4e9d9f9112079c09d493c48 /include
parentac7e22dcfafd04c842a02057afd6541c1d613ef9 (diff)
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fanotify: limit number of listeners per user
fanotify currently has no limit on the number of listeners a given user can have open. This patch limits the total number of listeners per user to 128. This is the same as the inotify default limit. Signed-off-by: Eric Paris <eparis@redhat.com>
Diffstat (limited to 'include')
-rw-r--r--include/linux/fsnotify_backend.h1
-rw-r--r--include/linux/sched.h3
2 files changed, 4 insertions, 0 deletions
diff --git a/include/linux/fsnotify_backend.h b/include/linux/fsnotify_backend.h
index 49ceed6e92b1..4366f458a86a 100644
--- a/include/linux/fsnotify_backend.h
+++ b/include/linux/fsnotify_backend.h
@@ -170,6 +170,7 @@ struct fsnotify_group {
#endif /* CONFIG_FANOTIFY_ACCESS_PERMISSIONS */
int f_flags;
unsigned int max_marks;
+ struct user_struct *user;
} fanotify_data;
#endif /* CONFIG_FANOTIFY */
};
diff --git a/include/linux/sched.h b/include/linux/sched.h
index be7adb7588e5..6f420baf37ca 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -672,6 +672,9 @@ struct user_struct {
atomic_t inotify_watches; /* How many inotify watches does this user have? */
atomic_t inotify_devs; /* How many inotify devs does this user have opened? */
#endif
+#ifdef CONFIG_FANOTIFY
+ atomic_t fanotify_listeners;
+#endif
#ifdef CONFIG_EPOLL
atomic_t epoll_watches; /* The number of file descriptors currently watched */
#endif