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syscall: add Windows file mapping functions and constants

Browse Source 
R=brainman, rsc1, rsc
CC=golang-dev
https://golang.org/cl/4375046
This commit is contained in:
Evan Shaw 2011-05-02 09:35:55 +10:00 committed by Alex Brainman
parent 89adf5dce4
commit 366986a3fe
3 changed files with 110 additions and 0 deletions
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6
src/pkg/syscall/syscall_windows.go
View File

@ -161,6 +161,12 @@ func NewCallback(fn interface{}) uintptr
//sys SetHandleInformation(handle int32, mask uint32, flags uint32) (errno int)
//sys FlushFileBuffers(handle int32) (errno int)
//sys GetFullPathName(path *uint16, buflen uint32, buf *uint16, fname **uint16) (n uint32, errno int) = kernel32.GetFullPathNameW
//sys CreateFileMapping(fhandle int32, sa *SecurityAttributes, prot uint32, maxSizeHigh uint32, maxSizeLow uint32, name *uint16) (handle int32, errno int) = kernel32.CreateFileMappingW
//sys MapViewOfFile(handle int32, access uint32, offsetHigh uint32, offsetLow uint32, length uintptr) (addr uintptr, errno int)
//sys UnmapViewOfFile(addr uintptr) (errno int)
//sys FlushViewOfFile(addr uintptr, length uintptr) (errno int)
//sys VirtualLock(addr uintptr, length uintptr) (errno int)
//sys VirtualUnlock(addr uintptr, length uintptr) (errno int)
// syscall interface implementation for other packages

92
src/pkg/syscall/zsyscall_windows_386.go
View File

@ -70,6 +70,12 @@ var (
procSetHandleInformation = getSysProcAddr(modkernel32, "SetHandleInformation")
procFlushFileBuffers = getSysProcAddr(modkernel32, "FlushFileBuffers")
procGetFullPathNameW = getSysProcAddr(modkernel32, "GetFullPathNameW")
procCreateFileMappingW = getSysProcAddr(modkernel32, "CreateFileMappingW")
procMapViewOfFile = getSysProcAddr(modkernel32, "MapViewOfFile")
procUnmapViewOfFile = getSysProcAddr(modkernel32, "UnmapViewOfFile")
procFlushViewOfFile = getSysProcAddr(modkernel32, "FlushViewOfFile")
procVirtualLock = getSysProcAddr(modkernel32, "VirtualLock")
procVirtualUnlock = getSysProcAddr(modkernel32, "VirtualUnlock")
procWSAStartup = getSysProcAddr(modwsock32, "WSAStartup")
procWSACleanup = getSysProcAddr(modwsock32, "WSACleanup")
procsocket = getSysProcAddr(modwsock32, "socket")
@ -901,6 +907,92 @@ func GetFullPathName(path *uint16, buflen uint32, buf *uint16, fname **uint16) (
return
}
func CreateFileMapping(fhandle int32, sa *SecurityAttributes, prot uint32, maxSizeHigh uint32, maxSizeLow uint32, name *uint16) (handle int32, errno int) {
r0, _, e1 := Syscall6(procCreateFileMappingW, 6, uintptr(fhandle), uintptr(unsafe.Pointer(sa)), uintptr(prot), uintptr(maxSizeHigh), uintptr(maxSizeLow), uintptr(unsafe.Pointer(name)))
handle = int32(r0)
if handle == 0 {
if e1 != 0 {
errno = int(e1)
} else {
errno = EINVAL
}
} else {
errno = 0
}
return
}
func MapViewOfFile(handle int32, access uint32, offsetHigh uint32, offsetLow uint32, length uintptr) (addr uintptr, errno int) {
r0, _, e1 := Syscall6(procMapViewOfFile, 5, uintptr(handle), uintptr(access), uintptr(offsetHigh), uintptr(offsetLow), uintptr(length), 0)
addr = uintptr(r0)
if addr == 0 {
if e1 != 0 {
errno = int(e1)
} else {
errno = EINVAL
}
} else {
errno = 0
}
return
}
func UnmapViewOfFile(addr uintptr) (errno int) {
r1, _, e1 := Syscall(procUnmapViewOfFile, 1, uintptr(addr), 0, 0)
if int(r1) == 0 {
if e1 != 0 {
errno = int(e1)
} else {
errno = EINVAL
}
} else {
errno = 0
}
return
}
func FlushViewOfFile(addr uintptr, length uintptr) (errno int) {
r1, _, e1 := Syscall(procFlushViewOfFile, 2, uintptr(addr), uintptr(length), 0)
if int(r1) == 0 {
if e1 != 0 {
errno = int(e1)
} else {
errno = EINVAL
}
} else {
errno = 0
}
return
}
func VirtualLock(addr uintptr, length uintptr) (errno int) {
r1, _, e1 := Syscall(procVirtualLock, 2, uintptr(addr), uintptr(length), 0)
if int(r1) == 0 {
if e1 != 0 {
errno = int(e1)
} else {
errno = EINVAL
}
} else {
errno = 0
}
return
}
func VirtualUnlock(addr uintptr, length uintptr) (errno int) {
r1, _, e1 := Syscall(procVirtualUnlock, 2, uintptr(addr), uintptr(length), 0)
if int(r1) == 0 {
if e1 != 0 {
errno = int(e1)
} else {
errno = EINVAL
}
} else {
errno = 0
}
return
}
func WSAStartup(verreq uint32, data *WSAData) (sockerrno int) {
r0, _, _ := Syscall(procWSAStartup, 2, uintptr(verreq), uintptr(unsafe.Pointer(data)), 0)
sockerrno = int(r0)

12
src/pkg/syscall/ztypes_windows_386.go
View File

@ -119,6 +119,18 @@ const (
STANDARD_RIGHTS_READ = 0x00020000
PROCESS_QUERY_INFORMATION = 0x00000400
SYNCHRONIZE = 0x00100000
PAGE_READONLY = 0x02
PAGE_READWRITE = 0x04
PAGE_WRITECOPY = 0x08
PAGE_EXECUTE_READ = 0x20
PAGE_EXECUTE_READWRITE = 0x40
PAGE_EXECUTE_WRITECOPY = 0x80
FILE_MAP_COPY = 0x01
FILE_MAP_WRITE = 0x02
FILE_MAP_READ = 0x04
FILE_MAP_EXECUTE = 0x20
)
const (