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62 lines
2.5 KiB
C
62 lines
2.5 KiB
C
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/* Definitions for POSIX memory map interface. Insert rest of disclaimer here */
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#ifndef _SYS_MMAN_H
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# error "Never use <bits/mman.h> directly; include <sys/mman.h> instead."
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#endif
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/* these are basically taken from the kernel definitions */
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#define PROT_READ 0x1 /* page can be read */
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#define PROT_WRITE 0x2 /* page can be written */
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#define PROT_EXEC 0x4 /* page can be executed */
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#define PROT_NONE 0x0 /* page can not be accessed */
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#define MAP_SHARED 0x01 /* Share changes */
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#define MAP_PRIVATE 0x02 /* Changes are private */
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#define MAP_TYPE 0x03 /* Mask for type of mapping */
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#define MAP_FIXED 0x04 /* Interpret addr exactly */
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#define MAP_ANONYMOUS 0x10 /* don't use a file */
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#define MAP_DENYWRITE 0x0800 /* ETXTBSY */
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#define MAP_EXECUTABLE 0x1000 /* mark it as an executable */
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#define MAP_LOCKED 0x2000 /* pages are locked */
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#define MAP_NORESERVE 0x4000 /* don't check for reservations */
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#define MAP_GROWSDOWN 0x8000 /* stack-like segment */
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#define MS_SYNC 1 /* synchronous memory sync */
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#define MS_ASYNC 2 /* sync memory asynchronously */
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#define MS_INVALIDATE 4 /* invalidate the caches */
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#define MCL_CURRENT 1 /* lock all current mappings */
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#define MCL_FUTURE 2 /* lock all future mappings */
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#define MADV_NORMAL 0 /* no further special treatment */
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#define MADV_RANDOM 1 /* expect random page references */
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#define MADV_SEQUENTIAL 2 /* expect sequential page references */
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#define MADV_WILLNEED 3 /* will need these pages */
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#define MADV_DONTNEED 4 /* dont need these pages */
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#define MADV_SPACEAVAIL 5 /* insure that resources are reserved */
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#define MADV_VPS_PURGE 6 /* Purge pages from VM page cache */
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#define MADV_VPS_INHERIT 7 /* Inherit parents page size */
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/* The range 12-64 is reserved for page size specification. */
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#define MADV_4K_PAGES 12 /* Use 4K pages */
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#define MADV_16K_PAGES 14 /* Use 16K pages */
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#define MADV_64K_PAGES 16 /* Use 64K pages */
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#define MADV_256K_PAGES 18 /* Use 256K pages */
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#define MADV_1M_PAGES 20 /* Use 1 Megabyte pages */
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#define MADV_4M_PAGES 22 /* Use 4 Megabyte pages */
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#define MADV_16M_PAGES 24 /* Use 16 Megabyte pages */
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#define MADV_64M_PAGES 26 /* Use 64 Megabyte pages */
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/* compatibility flags */
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#define MAP_ANON MAP_ANONYMOUS
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#define MAP_FILE 0
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#define MAP_VARIABLE 0
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/* Flags for `mremap'. */
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#ifdef __USE_GNU
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# define MREMAP_MAYMOVE 1
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#endif
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