add MAP_HASSEMAPHORE option

SCCS-vsn: share/doc/psd/05.sysman/1.2.t 6.3

diff --git a/usr/src/share/doc/psd/05.sysman/1.2.t b/usr/src/share/doc/psd/05.sysman/1.2.t
index 1887cde..9e9037b 100644 (file)
--- a/usr/src/share/doc/psd/05.sysman/1.2.t
+++ b/usr/src/share/doc/psd/05.sysman/1.2.t
@@ -2,7 +2,7 @@
 .\" All rights reserved.  The Berkeley software License Agreement
 .\" specifies the terms and conditions for redistribution.
 .\"
 .\" All rights reserved.  The Berkeley software License Agreement
 .\" specifies the terms and conditions for redistribution.
 .\"

-.\"    @(#)1.2.t       6.2 (Berkeley) %G%
+.\"    @(#)1.2.t       6.3 (Berkeley) %G%

 .\"
 .sh "Memory management\(dg
 .NH 3
 .\"
 .sh "Memory management\(dg
 .NH 3


@@ -50,15 +50,16 @@ Protection and sharing options are defined in <mman.h> as:
 /* mapping type; choose one */
 #define MAP_FILE       0x01    /* mapped from a file */
 #define MAP_SWAP       0x02    /* mapped from swap space */
 /* mapping type; choose one */
 #define MAP_FILE       0x01    /* mapped from a file */
 #define MAP_SWAP       0x02    /* mapped from swap space */

-#define MAP_MEMORY     0x04    /* mapped from device memory */
+#define MAP_MEMORY     0x03    /* mapped from device memory */

 
 /* sharing types; choose one */
 
 /* sharing types; choose one */

-#define        MAP_SHARED      0x10    /* share changes */
-#define        MAP_PRIVATE     0x20    /* changes are private */
+#define        MAP_SHARED      0x04    /* share changes */
+#define        MAP_PRIVATE     0x00    /* changes are private */

 
 /* other flags */
 
 /* other flags */

-#define MAP_FIXED      0x40    /* map region must be allocated at addr */
-#define MAP_EXTEND     0x80    /* for MAP_FILE, the file may be extended */
+#define MAP_FIXED      0x10    /* map region must be allocated at addr */
+#define MAP_EXTEND     0x20    /* for MAP_FILE, the file may be extended */
+#define MAP_HASSEMPHORE        0x40    /* region may contain semaphores */

 .DE
 The cpu-dependent size of a page is returned by the
 \fIgetpagesize\fP system call:
 .DE
 The cpu-dependent size of a page is returned by the
 \fIgetpagesize\fP system call:


@@ -155,10 +156,10 @@ caddr_t addr;
 .DE
 \fIAddr\fP must lie within a MAP_SHARED region with at least modes
 PROT_READ and PROT_WRITE.
 .DE
 \fIAddr\fP must lie within a MAP_SHARED region with at least modes
 PROT_READ and PROT_WRITE.

+The MAP_HASSEMAPHORE flag must have been specified when the region was created.

 The process will remain in a sleeping state
 until some other process issues an \fImwakeup\fP for the same byte
 The process will remain in a sleeping state
 until some other process issues an \fImwakeup\fP for the same byte

-within the region (possibly from a different virtual address)
-using the call:
+within the region using the call:

 .DS
 mwakeup(addr)
 caddr_t addr;
 .DS
 mwakeup(addr)
 caddr_t addr;