X-Git-Url: https://git.saurik.com/apple/xnu.git/blobdiff_plain/8f6c56a50524aa785f7e596d52dddfb331e18961..5c9f46613a83ebfc29a5b1f099448259e96a98f0:/bsd/sys/pipe.h?ds=inline

diff --git a/bsd/sys/pipe.h b/bsd/sys/pipe.h
index cf5f0d798..09b25dbce 100644
--- a/bsd/sys/pipe.h
+++ b/bsd/sys/pipe.h
@@ -47,6 +47,12 @@
  *
  * $FreeBSD: src/sys/sys/pipe.h,v 1.24 2003/08/13 20:01:38 alc Exp $
  */
+/*
+ * NOTICE: This file was modified by SPARTA, Inc. in 2006 to introduce
+ * support for mandatory and extensible security protections.  This notice
+ * is included in support of clause 2.2 (b) of the Apple Public License,
+ * Version 2.0.
+ */
 
 #ifndef _SYS_PIPE_H_
 #define _SYS_PIPE_H_
@@ -57,6 +63,8 @@
 #include <sys/queue.h>			/* for TAILQ macros */
 #include <sys/ev.h>
 #include <sys/cdefs.h>
+#include <sys/_types/_caddr_t.h>
+#include <sys/_types/_u_int.h>
 
 /*
  * Pipe buffer size, keep moderate in value, pipes take kva space.
@@ -65,6 +73,8 @@
 #define PIPE_SIZE	16384
 #endif
 
+#define PIPE_KVAMAX	(1024 * 1024 * 16)
+
 #ifndef BIG_PIPE_SIZE
 #define BIG_PIPE_SIZE	(64*1024)
 #endif
@@ -101,7 +111,6 @@ struct pipebuf {
 /*
  * Information to support direct transfers between processes for pipes.
  */
-/* LP64todo - not 64bit safe */
 struct pipemapping {
 	vm_offset_t	kva;		/* kernel virtual address */
 	vm_size_t	cnt;		/* number of chars in buffer */
@@ -124,9 +133,16 @@ struct pipemapping {
 #define PIPE_LWANT	0x200	/* Process wants exclusive access to pointers/data. */
 #define PIPE_DIRECTW	0x400	/* Pipe direct write active. */
 #define PIPE_DIRECTOK	0x800	/* Direct mode ok. */
-#define PIPE_KNOTE     0x1000   /* Pipe has kernel events activated */
+#define PIPE_KNOTE	0x1000   /* Pipe has kernel events activated */
+#define PIPE_DRAIN	0x2000  /* Waiting for I/O to drop for a close.  Treated like EOF;
+					only separate for easier debugging. */
+#define PIPE_WSELECT	0x4000  /* Some thread has done an FWRITE select on the pipe */
+#define PIPE_DEAD	0x8000  /* Pipe is dead and needs garbage collection */
 
 #ifdef	KERNEL
+
+struct label;
+
 /*
  * Per-pipe data structure.
  * Two of these are linked together to produce bi-directional pipes.
@@ -141,21 +157,23 @@ struct pipe {
 	struct	pipe *pipe_peer;	/* link with other direction */
 	u_int	pipe_state;		/* pipe status info */
 	int	pipe_busy;		/* busy flag, mostly to handle rundown sanely */
-#ifdef MAC
-	struct	label *pipe_label;	/* pipe MAC label - shared */
-#endif
 	TAILQ_HEAD(,eventqelt) pipe_evlist;
 	lck_mtx_t *pipe_mtxp;		/* shared mutex between both pipes */
+	struct	timespec st_atimespec;	/* time of last access */
+	struct	timespec st_mtimespec;	/* time of last data modification */
+	struct	timespec st_ctimespec;	/* time of last status change */
+	struct	label *pipe_label;	/* pipe MAC label - shared */
 };
 
 #define PIPE_MTX(pipe)		((pipe)->pipe_mtxp)
 
 #define PIPE_LOCK(pipe)		lck_mtx_lock(PIPE_MTX(pipe))
 #define PIPE_UNLOCK(pipe)	lck_mtx_unlock(PIPE_MTX(pipe))
-#define PIPE_LOCK_ASSERT(pipe, type)  lck_mtx_assert(PIPE_MTX(pipe), (type))
+#define PIPE_LOCK_ASSERT(pipe, type)  LCK_MTX_ASSERT(PIPE_MTX(pipe), (type))
 
 __BEGIN_DECLS
-extern int pipe_stat(struct pipe *, struct stat *);
+void pipeinit(void);
+extern int pipe_stat(struct pipe *, void *, int);
 __END_DECLS
 
 #endif	/* KERNEL */