/*
- * Copyright (c) 2003-2005 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2003-2006 Apple Computer, Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
#define EVFILT_PROC (-5) /* attached to struct proc */
#define EVFILT_SIGNAL (-6) /* attached to struct proc */
#define EVFILT_TIMER (-7) /* timers */
-#define EVFILT_MACHPORT (-8) /* Mach ports */
+#define EVFILT_MACHPORT (-8) /* Mach portsets */
#define EVFILT_FS (-9) /* Filesystem events */
+#define EVFILT_USER (-10) /* User events */
+ /* (-11) unused */
+#define EVFILT_VM (-12) /* Virtual memory events */
-#define EVFILT_SYSCOUNT 9
+#define EVFILT_SYSCOUNT 12
#define EVFILT_THREADMARKER EVFILT_SYSCOUNT /* Internal use only */
-#if __DARWIN_ALIGN_POWER
-#pragma options align=power
-#endif
+#pragma pack(4)
struct kevent {
uintptr_t ident; /* identifier for this event */
- short filter; /* filter for event */
- unsigned short flags; /* general flags */
- unsigned int fflags; /* filter-specific flags */
+ int16_t filter; /* filter for event */
+ uint16_t flags; /* general flags */
+ uint32_t fflags; /* filter-specific flags */
intptr_t data; /* filter-specific data */
-#ifdef KERNEL_PRIVATE
- user_addr_t udata; /* opaque user data identifier */
-#else
void *udata; /* opaque user data identifier */
-#endif
};
#ifdef KERNEL_PRIVATE
-struct user_kevent {
+struct user64_kevent {
uint64_t ident; /* identifier for this event */
- short filter; /* filter for event */
- unsigned short flags; /* general flags */
- unsigned int fflags; /* filter-specific flags */
+ int16_t filter; /* filter for event */
+ uint16_t flags; /* general flags */
+ uint32_t fflags; /* filter-specific flags */
int64_t data; /* filter-specific data */
user_addr_t udata; /* opaque user data identifier */
};
-#endif
+struct user32_kevent {
+ uint32_t ident; /* identifier for this event */
+ int16_t filter; /* filter for event */
+ uint16_t flags; /* general flags */
+ uint32_t fflags; /* filter-specific flags */
+ int32_t data; /* filter-specific data */
+ user32_addr_t udata; /* opaque user data identifier */
+};
-#if __DARWIN_ALIGN_POWER
-#pragma options align=reset
#endif
+#pragma pack()
+
+struct kevent64_s {
+ uint64_t ident; /* identifier for this event */
+ int16_t filter; /* filter for event */
+ uint16_t flags; /* general flags */
+ uint32_t fflags; /* filter-specific flags */
+ int64_t data; /* filter-specific data */
+ uint64_t udata; /* opaque user data identifier */
+ uint64_t ext[2]; /* filter-specific extensions */
+};
+
#define EV_SET(kevp, a, b, c, d, e, f) do { \
struct kevent *__kevp__ = (kevp); \
__kevp__->ident = (a); \
__kevp__->udata = (f); \
} while(0)
+#define EV_SET64(kevp, a, b, c, d, e, f, g, h) do { \
+ struct kevent64_s *__kevp__ = (kevp); \
+ __kevp__->ident = (a); \
+ __kevp__->filter = (b); \
+ __kevp__->flags = (c); \
+ __kevp__->fflags = (d); \
+ __kevp__->data = (e); \
+ __kevp__->udata = (f); \
+ __kevp__->ext[0] = (g); \
+ __kevp__->ext[1] = (h); \
+} while(0)
+
/* actions */
#define EV_ADD 0x0001 /* add event to kq (implies enable) */
#define EV_DELETE 0x0002 /* delete event from kq */
#define EV_ENABLE 0x0004 /* enable event */
#define EV_DISABLE 0x0008 /* disable event (not reported) */
+#define EV_RECEIPT 0x0040 /* force EV_ERROR on success, data == 0 */
/* flags */
#define EV_ONESHOT 0x0010 /* only report one occurrence */
#define EV_CLEAR 0x0020 /* clear event state after reporting */
+#define EV_DISPATCH 0x0080 /* disable event after reporting */
#define EV_SYSFLAGS 0xF000 /* reserved by system */
#define EV_FLAG0 0x1000 /* filter-specific flag */
#define EV_POLL EV_FLAG0
#define EV_OOBAND EV_FLAG1
+/*
+ * data/hint fflags for EVFILT_USER, shared with userspace
+ */
+
+/*
+ * On input, NOTE_TRIGGER causes the event to be triggered for output.
+ */
+#define NOTE_TRIGGER 0x01000000
+
+/*
+ * On input, the top two bits of fflags specifies how the lower twenty four
+ * bits should be applied to the stored value of fflags.
+ *
+ * On output, the top two bits will always be set to NOTE_FFNOP and the
+ * remaining twenty four bits will contain the stored fflags value.
+ */
+#define NOTE_FFNOP 0x00000000 /* ignore input fflags */
+#define NOTE_FFAND 0x40000000 /* and fflags */
+#define NOTE_FFOR 0x80000000 /* or fflags */
+#define NOTE_FFCOPY 0xc0000000 /* copy fflags */
+#define NOTE_FFCTRLMASK 0xc0000000 /* mask for operations */
+#define NOTE_FFLAGSMASK 0x00ffffff
+
/*
* data/hint fflags for EVFILT_{READ|WRITE}, shared with userspace
*
#define NOTE_LINK 0x00000010 /* link count changed */
#define NOTE_RENAME 0x00000020 /* vnode was renamed */
#define NOTE_REVOKE 0x00000040 /* vnode access was revoked */
+#define NOTE_NONE 0x00000080 /* No specific vnode event: to test for EVFILT_READ activation*/
/*
* data/hint fflags for EVFILT_PROC, shared with userspace
+ *
+ * Please note that EVFILT_PROC and EVFILT_SIGNAL share the same knote list
+ * 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.
*/
#define NOTE_EXIT 0x80000000 /* process exited */
#define NOTE_FORK 0x40000000 /* process forked */
#define NOTE_EXEC 0x20000000 /* process exec'd */
-#define NOTE_PCTRLMASK 0xf0000000 /* mask for hint bits */
-#define NOTE_PDATAMASK 0x000fffff /* mask for pid */
+#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.
#define NOTE_NSECONDS 0x00000004 /* data is nanoseconds */
#define NOTE_ABSOLUTE 0x00000008 /* absolute timeout */
/* ... implicit EV_ONESHOT */
-
+/*
+ * data/hint fflags for EVFILT_MACHPORT, shared with userspace.
+ *
+ * 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>.
+ * The presence of these flags directs the kevent64() call to attempt to receive
+ * the message during kevent delivery, rather than just indicate that a message exists.
+ * On setup, The ext[0] field contains the receive buffer pointer and ext[1] contains
+ * the receive buffer length. Upon event delivery, the actual received message size
+ * is returned in ext[1]. As with mach_msg(), the buffer must be large enough to
+ * receive the message and the requested (or default) message trailers. In addition,
+ * the fflags field contains the return code normally returned by mach_msg().
+ *
+ * If no message receipt options were provided in the fflags field on setup, no
+ * message is received by this call. Instead, on output, the data field simply
+ * contains the name of the actual port detected with a message waiting.
+ */
+
+/*
+ * DEPRECATED!!!!!!!!!
+ * NOTE_TRACK, NOTE_TRACKERR, and NOTE_CHILD are no longer supported as of 10.5
+ */
/* additional flags for EVFILT_PROC */
#define NOTE_TRACK 0x00000001 /* follow across forks */
#define NOTE_TRACKERR 0x00000002 /* could not track child */
MALLOC_DECLARE(M_KQUEUE);
#endif
-/*
- * Flag indicating hint is a signal. Used by EVFILT_SIGNAL, and also
- * shared by EVFILT_PROC (all knotes attached to p->p_klist)
- */
-#define NOTE_SIGNAL 0x08000000
-
TAILQ_HEAD(kqtailq, knote); /* a list of "queued" events */
struct knote {
union {
struct fileproc *p_fp; /* file data pointer */
struct proc *p_proc; /* proc pointer */
+ struct ipc_pset *p_pset; /* pset pointer */
} kn_ptr;
struct filterops *kn_fop;
int kn_status; /* status bits */
int kn_sfflags; /* saved filter flags */
- struct kevent kn_kevent;
- caddr_t kn_hook;
+ struct kevent64_s kn_kevent;
+ void *kn_hook;
int kn_hookid;
int64_t kn_sdata; /* saved data field */
#define KN_DISABLED 0x04 /* event is disabled */
#define KN_DROPPING 0x08 /* knote is being dropped */
#define KN_USEWAIT 0x10 /* wait for knote use */
-#define KN_DROPWAIT 0x20 /* wait for knote drop */
+#define KN_ATTACHING 0x20 /* event is pending attach */
+#define KN_STAYQUEUED 0x40 /* force event to stay on queue */
#define kn_id kn_kevent.ident
#define kn_filter kn_kevent.filter
#define kn_flags kn_kevent.flags
#define kn_fflags kn_kevent.fflags
#define kn_data kn_kevent.data
+#define kn_udata kn_kevent.udata
+#define kn_ext kn_kevent.ext
#define kn_fp kn_ptr.p_fp
};
+/* Hint values for f_touch filter operation */
+#define EVENT_REGISTER 1
+#define EVENT_PROCESS 2
+
struct filterops {
int f_isfd; /* true if ident == filedescriptor */
int (*f_attach)(struct knote *kn);
void (*f_detach)(struct knote *kn);
int (*f_event)(struct knote *kn, long hint);
+ /* 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 */
+ unsigned (*f_peek)(struct knote *kn);
};
struct proc;
+struct wait_queue;
SLIST_HEAD(klist, knote);
+extern void knote_init(void) __attribute__((section("__TEXT, initcode")));
extern void klist_init(struct klist *list);
#define KNOTE(list, hint) knote(list, hint)
extern void knote(struct klist *list, long hint);
extern int knote_attach(struct klist *list, struct knote *kn);
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 */
int kevent(int kq, const struct kevent *changelist, int nchanges,
struct kevent *eventlist, int nevents,
const struct timespec *timeout);
+int kevent64(int kq, const struct kevent64_s *changelist,
+ int nchanges, struct kevent64_s *eventlist,
+ int nevents, unsigned int flags,
+ const struct timespec *timeout);
__END_DECLS
-#ifdef PRIVATE
-#include <mach/port.h>
-
-__BEGIN_DECLS
-mach_port_t kqueue_portset_np(int kq);
-int kqueue_from_portset_np(mach_port_t portset);
-__END_DECLS
-#endif /* PRIVATE */
-
#endif /* KERNEL */
projects / apple / xnu.git / blobdiff