139 lines
4.6 KiB
C
139 lines
4.6 KiB
C
|
/* SPDX-License-Identifier: GPL-2.0 */
|
||
|
|
#ifndef _LINUX_FANOTIFY_H
|
||
|
|
#define _LINUX_FANOTIFY_H
|
||
|
|
|
||
|
|
#include <linux/sysctl.h>
|
||
|
|
#include <uapi/linux/fanotify.h>
|
||
|
|
|
||
|
|
#define FAN_GROUP_FLAG(group, flag) \
|
||
|
|
((group)->fanotify_data.flags & (flag))
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Flags allowed to be passed from/to userspace.
|
||
|
|
*
|
||
|
|
* We intentionally do not add new bits to the old FAN_ALL_* constants, because
|
||
|
|
* they are uapi exposed constants. If there are programs out there using
|
||
|
|
* these constant, the programs may break if re-compiled with new uapi headers
|
||
|
|
* and then run on an old kernel.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/* Group classes where permission events are allowed */
|
||
|
|
#define FANOTIFY_PERM_CLASSES (FAN_CLASS_CONTENT | \
|
||
|
|
FAN_CLASS_PRE_CONTENT)
|
||
|
|
|
||
|
|
#define FANOTIFY_CLASS_BITS (FAN_CLASS_NOTIF | FANOTIFY_PERM_CLASSES)
|
||
|
|
|
||
|
|
#define FANOTIFY_FID_BITS (FAN_REPORT_DFID_NAME_TARGET)
|
||
|
|
|
||
|
|
#define FANOTIFY_INFO_MODES (FANOTIFY_FID_BITS | FAN_REPORT_PIDFD)
|
||
|
|
|
||
|
|
/*
|
||
|
|
* fanotify_init() flags that require CAP_SYS_ADMIN.
|
||
|
|
* We do not allow unprivileged groups to request permission events.
|
||
|
|
* We do not allow unprivileged groups to get other process pid in events.
|
||
|
|
* We do not allow unprivileged groups to use unlimited resources.
|
||
|
|
*/
|
||
|
|
#define FANOTIFY_ADMIN_INIT_FLAGS (FANOTIFY_PERM_CLASSES | \
|
||
|
|
FAN_REPORT_TID | \
|
||
|
|
FAN_REPORT_PIDFD | \
|
||
|
|
FAN_UNLIMITED_QUEUE | \
|
||
|
|
FAN_UNLIMITED_MARKS)
|
||
|
|
|
||
|
|
/*
|
||
|
|
* fanotify_init() flags that are allowed for user without CAP_SYS_ADMIN.
|
||
|
|
* FAN_CLASS_NOTIF is the only class we allow for unprivileged group.
|
||
|
|
* We do not allow unprivileged groups to get file descriptors in events,
|
||
|
|
* so one of the flags for reporting file handles is required.
|
||
|
|
*/
|
||
|
|
#define FANOTIFY_USER_INIT_FLAGS (FAN_CLASS_NOTIF | \
|
||
|
|
FANOTIFY_FID_BITS | \
|
||
|
|
FAN_CLOEXEC | FAN_NONBLOCK)
|
||
|
|
|
||
|
|
#define FANOTIFY_INIT_FLAGS (FANOTIFY_ADMIN_INIT_FLAGS | \
|
||
|
|
FANOTIFY_USER_INIT_FLAGS)
|
||
|
|
|
||
|
|
/* Internal group flags */
|
||
|
|
#define FANOTIFY_UNPRIV 0x80000000
|
||
|
|
#define FANOTIFY_INTERNAL_GROUP_FLAGS (FANOTIFY_UNPRIV)
|
||
|
|
|
||
|
|
#define FANOTIFY_MARK_TYPE_BITS (FAN_MARK_INODE | FAN_MARK_MOUNT | \
|
||
|
|
FAN_MARK_FILESYSTEM)
|
||
|
|
|
||
|
|
#define FANOTIFY_MARK_CMD_BITS (FAN_MARK_ADD | FAN_MARK_REMOVE | \
|
||
|
|
FAN_MARK_FLUSH)
|
||
|
|
|
||
|
|
#define FANOTIFY_MARK_IGNORE_BITS (FAN_MARK_IGNORED_MASK | \
|
||
|
|
FAN_MARK_IGNORE)
|
||
|
|
|
||
|
|
#define FANOTIFY_MARK_FLAGS (FANOTIFY_MARK_TYPE_BITS | \
|
||
|
|
FANOTIFY_MARK_CMD_BITS | \
|
||
|
|
FANOTIFY_MARK_IGNORE_BITS | \
|
||
|
|
FAN_MARK_DONT_FOLLOW | \
|
||
|
|
FAN_MARK_ONLYDIR | \
|
||
|
|
FAN_MARK_IGNORED_SURV_MODIFY | \
|
||
|
|
FAN_MARK_EVICTABLE)
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Events that can be reported with data type FSNOTIFY_EVENT_PATH.
|
||
|
|
* Note that FAN_MODIFY can also be reported with data type
|
||
|
|
* FSNOTIFY_EVENT_INODE.
|
||
|
|
*/
|
||
|
|
#define FANOTIFY_PATH_EVENTS (FAN_ACCESS | FAN_MODIFY | \
|
||
|
|
FAN_CLOSE | FAN_OPEN | FAN_OPEN_EXEC)
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Directory entry modification events - reported only to directory
|
||
|
|
* where entry is modified and not to a watching parent.
|
||
|
|
*/
|
||
|
|
#define FANOTIFY_DIRENT_EVENTS (FAN_MOVE | FAN_CREATE | FAN_DELETE | \
|
||
|
|
FAN_RENAME)
|
||
|
|
|
||
|
|
/* Events that can be reported with event->fd */
|
||
|
|
#define FANOTIFY_FD_EVENTS (FANOTIFY_PATH_EVENTS | FANOTIFY_PERM_EVENTS)
|
||
|
|
|
||
|
|
/* Events that can only be reported with data type FSNOTIFY_EVENT_INODE */
|
||
|
|
#define FANOTIFY_INODE_EVENTS (FANOTIFY_DIRENT_EVENTS | \
|
||
|
|
FAN_ATTRIB | FAN_MOVE_SELF | FAN_DELETE_SELF)
|
||
|
|
|
||
|
|
/* Events that can only be reported with data type FSNOTIFY_EVENT_ERROR */
|
||
|
|
#define FANOTIFY_ERROR_EVENTS (FAN_FS_ERROR)
|
||
|
|
|
||
|
|
/* Events that user can request to be notified on */
|
||
|
|
#define FANOTIFY_EVENTS (FANOTIFY_PATH_EVENTS | \
|
||
|
|
FANOTIFY_INODE_EVENTS | \
|
||
|
|
FANOTIFY_ERROR_EVENTS)
|
||
|
|
|
||
|
|
/* Events that require a permission response from user */
|
||
|
|
#define FANOTIFY_PERM_EVENTS (FAN_OPEN_PERM | FAN_ACCESS_PERM | \
|
||
|
|
FAN_OPEN_EXEC_PERM)
|
||
|
|
|
||
|
|
/* Extra flags that may be reported with event or control handling of events */
|
||
|
|
#define FANOTIFY_EVENT_FLAGS (FAN_EVENT_ON_CHILD | FAN_ONDIR)
|
||
|
|
|
||
|
|
/* Events that may be reported to user */
|
||
|
|
#define FANOTIFY_OUTGOING_EVENTS (FANOTIFY_EVENTS | \
|
||
|
|
FANOTIFY_PERM_EVENTS | \
|
||
|
|
FAN_Q_OVERFLOW | FAN_ONDIR)
|
||
|
|
|
||
|
|
/* Events and flags relevant only for directories */
|
||
|
|
#define FANOTIFY_DIRONLY_EVENT_BITS (FANOTIFY_DIRENT_EVENTS | \
|
||
|
|
FAN_EVENT_ON_CHILD | FAN_ONDIR)
|
||
|
|
|
||
|
|
#define ALL_FANOTIFY_EVENT_BITS (FANOTIFY_OUTGOING_EVENTS | \
|
||
|
|
FANOTIFY_EVENT_FLAGS)
|
||
|
|
|
||
|
|
/* These masks check for invalid bits in permission responses. */
|
||
|
|
#define FANOTIFY_RESPONSE_ACCESS (FAN_ALLOW | FAN_DENY)
|
||
|
|
#define FANOTIFY_RESPONSE_FLAGS (FAN_AUDIT | FAN_INFO)
|
||
|
|
#define FANOTIFY_RESPONSE_VALID_MASK (FANOTIFY_RESPONSE_ACCESS | FANOTIFY_RESPONSE_FLAGS)
|
||
|
|
|
||
|
|
/* Do not use these old uapi constants internally */
|
||
|
|
#undef FAN_ALL_CLASS_BITS
|
||
|
|
#undef FAN_ALL_INIT_FLAGS
|
||
|
|
#undef FAN_ALL_MARK_FLAGS
|
||
|
|
#undef FAN_ALL_EVENTS
|
||
|
|
#undef FAN_ALL_PERM_EVENTS
|
||
|
|
#undef FAN_ALL_OUTGOING_EVENTS
|
||
|
|
|
||
|
|
#endif /* _LINUX_FANOTIFY_H */
|