xnu-1699.22.81.tar.gz

[apple/xnu.git] / bsd / sys / event.h

diff --git a/bsd/sys/event.h b/bsd/sys/event.h
index abbd600458eb1ff3d682787edeac3f44e9217ad9..05b31174a5739e89da99b96344996abb0ea6c6da 100644 (file)
--- a/bsd/sys/event.h
+++ b/bsd/sys/event.h
@@ -70,9 +70,10 @@
 #define EVFILT_MACHPORT         (-8)   /* Mach portsets */
 #define EVFILT_FS              (-9)    /* Filesystem events */
 #define EVFILT_USER             (-10)   /* User events */
-#define        EVFILT_SESSION          (-11)   /* Audit session events */
+                                       /* (-11) unused */
+#define EVFILT_VM              (-12)   /* Virtual memory events */
 
-#define EVFILT_SYSCOUNT                11
+#define EVFILT_SYSCOUNT                12
 #define EVFILT_THREADMARKER    EVFILT_SYSCOUNT /* Internal use only */
 
 #pragma pack(4)
@@ -191,7 +192,6 @@ struct kevent64_s {
  * On input, NOTE_TRIGGER causes the event to be triggered for output.
  */
 #define NOTE_TRIGGER   0x01000000
-#define EV_TRIGGER      0x0100 /*deprecated--for backwards compatibility only*/
 
 /*
  * On input, the top two bits of fflags specifies how the lower twenty four 
@@ -233,16 +233,26 @@ struct kevent64_s {
  * that hangs off the proc structure. They also both play games with the hint
  * passed to KNOTE(). If NOTE_SIGNAL is passed as a hint, then the lower bits
  * of the hint contain the signal. IF NOTE_FORK is passed, then the lower bits
- * contain the PID of the child.
+ * contain the PID of the child. 
  */
 #define        NOTE_EXIT       0x80000000              /* process exited */
 #define        NOTE_FORK       0x40000000              /* process forked */
 #define        NOTE_EXEC       0x20000000              /* process exec'd */
 #define        NOTE_REAP       0x10000000              /* process reaped */
 #define        NOTE_SIGNAL     0x08000000              /* shared with EVFILT_SIGNAL */
+#define        NOTE_EXITSTATUS 0x04000000              /* exit status to be returned, valid for child process only */
+#define        NOTE_RESOURCEEND 0x02000000             /* resource limit reached, resource type returned */
 #define        NOTE_PDATAMASK  0x000fffff              /* mask for pid/signal */
 #define        NOTE_PCTRLMASK  (~NOTE_PDATAMASK)
 
+/*
+ * data/hint fflags for EVFILT_VM, shared with userspace.
+ */
+#define NOTE_VM_PRESSURE                       0x80000000              /* will react on memory pressure */
+#define NOTE_VM_PRESSURE_TERMINATE             0x40000000              /* will quit on memory pressure, possibly after cleaning up dirty state */
+#define NOTE_VM_PRESSURE_SUDDEN_TERMINATE      0x20000000              /* will quit immediately on memory pressure */
+#define NOTE_VM_ERROR                          0x10000000              /* there was an error */
+
 /*
  * data/hint fflags for EVFILT_TIMER, shared with userspace.
  * The default is a (repeating) interval timer with the data
@@ -258,7 +268,7 @@ struct kevent64_s {
 /*
  * data/hint fflags for EVFILT_MACHPORT, shared with userspace.
  *
- * Only portsets are support at this time.
+ * Only portsets are supported at this time.
  *
  * The fflags field can optionally contain the MACH_RCV_MSG, MACH_RCV_LARGE,
  * and related trailer receive options as defined in <mach/message.h>.
@@ -275,29 +285,6 @@ struct kevent64_s {
  * contains the name of the actual port detected with a message waiting.
  */
 
-/*
- * data/hint fflags for EVFILT_SESSION, shared with userspace.
- *
- * The kevent ident field should be set to AU_SESSION_ANY_ASID if interested
- * in events for any session.
- *
- * NOTE_AS_UPDATE may be going away since struct auditinfo_addr may become 
- * immutable once initially set.
- */
-#define        NOTE_AS_START   0x00000001              /* start of new session */
-#define        NOTE_AS_END     0x00000002              /* start of new session */
-#define        NOTE_AS_ERR     0x00000004              /* error tracking new session */
-#define        NOTE_AS_CLOSE   0x00000008              /* currently unsupported */
-#define        NOTE_AS_UPDATE  0x00000010              /* session data updated */
-
-/*
- * Kevent ident value for any session.
- */
-#define        AS_ANY_ASID     0xFFFFFFFF
-
-struct au_sentry;      /* Audit session entry */
-
-
 /*
  * DEPRECATED!!!!!!!!!
  * NOTE_TRACK, NOTE_TRACKERR, and NOTE_CHILD are no longer supported as of 10.5
@@ -338,7 +325,6 @@ struct knote {
                struct          fileproc *p_fp; /* file data pointer */
                struct          proc *p_proc;   /* proc pointer */
                struct          ipc_pset *p_pset;       /* pset pointer */
-               struct          au_sentry *p_se;        /* Audit session ptr */
        } kn_ptr;
        struct                  filterops *kn_fop;
        int                     kn_status;      /* status bits */
@@ -378,7 +364,7 @@ struct filterops {
        /* Optional f_touch operation, called only if !f_isfd && non-NULL */
        void    (*f_touch)(struct knote *kn, struct kevent64_s *kev, long type);
        /* Optional f_peek operation, called only if KN_STAYQUEUED is set */
-       int     (*f_peek)(struct knote *kn);
+       unsigned (*f_peek)(struct knote *kn);
 };
 
 struct proc;
@@ -399,6 +385,7 @@ extern int  knote_detach(struct klist *list, struct knote *kn);
 extern int     knote_link_wait_queue(struct knote *kn, struct wait_queue *wq); 
 extern void    knote_unlink_wait_queue(struct knote *kn, struct wait_queue *wq);
 extern void    knote_fdclose(struct proc *p, int fd);
+extern void    knote_markstayqueued(struct knote *kn);
 
 #endif /* !KERNEL_PRIVATE */