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rename mmap MAP_SHARED to MAP_IPC_SHARED

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. MAP_SHARED was used to implement sysv shared memory
	. used to signal shareable memory region to VM
	. assumptions about this situation break when processes
	  use MAP_SHARED for its normal, standardised meaning
This commit is contained in:
Ben Gras
2011-07-15 18:10:50 +02:00
parent 255ae85b1e
commit 85f6d866e6
7 changed files with 16 additions and 6 deletions
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2
include/sys/mman.h
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@@ -13,7 +13,6 @@
#define PROT_EXEC 0x04 /* pages can be executed */
/* flags argument for mmap() */
#define MAP_SHARED 0x0001 /* share changes */
#define MAP_PRIVATE 0x0002 /* changes are private */
#define MAP_ANON 0x0004 /* anonymous memory */
#define MAP_PREALLOC 0x0008 /* not on-demand */
@@ -21,6 +20,7 @@
#define MAP_LOWER16M 0x0020 /* physically below 16MB */
#define MAP_ALIGN64K 0x0040 /* physically aligned at 64kB */
#define MAP_LOWER1M 0x0080 /* physically below 16MB */
#define MAP_IPC_SHARED 0x0100 /* used to implement shared memory */
/* mmap() error return */
#define MAP_FAILED ((void *)-1)