diff options
Diffstat (limited to 'include/linux/fanotify.h')
| -rw-r--r-- | include/linux/fanotify.h | 72 |
1 files changed, 61 insertions, 11 deletions
diff --git a/include/linux/fanotify.h b/include/linux/fanotify.h index b79fa9bb7359..8ad743def6f3 100644 --- a/include/linux/fanotify.h +++ b/include/linux/fanotify.h @@ -2,6 +2,7 @@ #ifndef _LINUX_FANOTIFY_H #define _LINUX_FANOTIFY_H +#include <linux/sysctl.h> #include <uapi/linux/fanotify.h> #define FAN_GROUP_FLAG(group, flag) \ @@ -15,25 +16,62 @@ * these constant, the programs may break if re-compiled with new uapi headers * and then run on an old kernel. */ -#define FANOTIFY_CLASS_BITS (FAN_CLASS_NOTIF | FAN_CLASS_CONTENT | \ + +/* Group classes where permission events are allowed */ +#define FANOTIFY_PERM_CLASSES (FAN_CLASS_CONTENT | \ FAN_CLASS_PRE_CONTENT) -#define FANOTIFY_INIT_FLAGS (FANOTIFY_CLASS_BITS | \ - FAN_REPORT_TID | FAN_REPORT_FID | \ - FAN_CLOEXEC | FAN_NONBLOCK | \ - FAN_UNLIMITED_QUEUE | FAN_UNLIMITED_MARKS) +#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 | \ - FAN_MARK_ADD | \ - FAN_MARK_REMOVE | \ + FANOTIFY_MARK_CMD_BITS | \ + FANOTIFY_MARK_IGNORE_BITS | \ FAN_MARK_DONT_FOLLOW | \ FAN_MARK_ONLYDIR | \ - FAN_MARK_IGNORED_MASK | \ FAN_MARK_IGNORED_SURV_MODIFY | \ - FAN_MARK_FLUSH) + FAN_MARK_EVICTABLE) /* * Events that can be reported with data type FSNOTIFY_EVENT_PATH. @@ -47,15 +85,23 @@ * 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) +#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_INODE_EVENTS | \ + FANOTIFY_ERROR_EVENTS) /* Events that require a permission response from user */ #define FANOTIFY_PERM_EVENTS (FAN_OPEN_PERM | FAN_ACCESS_PERM | \ @@ -69,6 +115,10 @@ 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) |