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Merge branch 'for-linus' of git://git.infradead.org/users/eparis/notify

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* 'for-linus' of git://git.infradead.org/users/eparis/notify:
  fanotify: fill in the metadata_len field on struct fanotify_event_metadata
  fanotify: split version into version and metadata_len
  fanotify: Dont try to open a file descriptor for the overflow event
  fanotify: Introduce FAN_NOFD
  fanotify: do not leak user reference on allocation failure
  inotify: stop kernel memory leak on file creation failure
  fanotify: on group destroy allow all waiters to bypass permission check
  fanotify: Dont allow a mask of 0 if setting or removing a mark
  fanotify: correct broken ref counting in case adding a mark failed
  fanotify: if set by user unset FMODE_NONOTIFY before fsnotify_perm() is called
  fanotify: remove packed from access response message
  fanotify: deny permissions when no event was sent
This commit is contained in:
Linus Torvalds 2010-12-16 15:45:49 -08:00
commit a3383e8372
7 changed files with 68 additions and 38 deletions
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10
include/linux/fanotify.h
View file

@ -83,11 +83,13 @@
FAN_ALL_PERM_EVENTS |\
FAN_Q_OVERFLOW)
#define FANOTIFY_METADATA_VERSION 2
#define FANOTIFY_METADATA_VERSION 3
struct fanotify_event_metadata {
__u32 event_len;
__u32 vers;
__u8 vers;
__u8 reserved;
__u16 metadata_len;
__aligned_u64 mask;
__s32 fd;
__s32 pid;
@ -96,11 +98,13 @@ struct fanotify_event_metadata {
struct fanotify_response {
__s32 fd;
__u32 response;
} __attribute__ ((packed));
};
/* Legit userspace responses to a _PERM event */
#define FAN_ALLOW 0x01
#define FAN_DENY 0x02
/* No fd set in event */
#define FAN_NOFD -1
/* Helper functions to deal with fanotify_event_metadata buffers */
#define FAN_EVENT_METADATA_LEN (sizeof(struct fanotify_event_metadata))

3
include/linux/fsnotify.h
View file

@ -235,9 +235,6 @@ static inline void fsnotify_open(struct file *file)
if (S_ISDIR(inode->i_mode))
mask |= FS_ISDIR;
/* FMODE_NONOTIFY must never be set from user */
file->f_mode &= ~FMODE_NONOTIFY;
fsnotify_parent(path, NULL, mask);
fsnotify(inode, mask, path, FSNOTIFY_EVENT_PATH, NULL, 0);
}

2
include/linux/fsnotify_backend.h
View file

@ -166,7 +166,7 @@ struct fsnotify_group {
struct mutex access_mutex;
struct list_head access_list;
wait_queue_head_t access_waitq;
bool bypass_perm; /* protected by access_mutex */
atomic_t bypass_perm;
#endif /* CONFIG_FANOTIFY_ACCESS_PERMISSIONS */
int f_flags;
unsigned int max_marks;