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Allocate securityDescriptor in C memory

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Signed-off-by: Darren Stahl <darst@microsoft.com>
This commit is contained in:
Darren Stahl
2017-05-03 12:46:54 -07:00
parent f3b1913901
commit 23ad5a714c
1 changed files with 9 additions and 5 deletions
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pipe.go
+9 -5
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@@ -2,6 +2,9 @@
package winio package winio
// #include <stdlib.h>
import "C"
import ( import (
"errors" "errors"
"io" "io"
@@ -21,7 +24,7 @@ import (
type securityAttributes struct { type securityAttributes struct {
Length uint32 Length uint32
SecurityDescriptor *byte SecurityDescriptor unsafe.Pointer
InheritHandle uint32 InheritHandle uint32
} }
@@ -231,12 +234,13 @@ func makeServerPipeHandle(path string, securityDescriptor []byte, c *PipeConfig,
mode |= cPIPE_TYPE_MESSAGE mode |= cPIPE_TYPE_MESSAGE
} }
var sa securityAttributes sa := &securityAttributes{}
sa.Length = uint32(unsafe.Sizeof(sa)) sa.Length = uint32(unsafe.Sizeof(*sa))
if securityDescriptor != nil { if securityDescriptor != nil {
sa.SecurityDescriptor = &securityDescriptor[0] sa.SecurityDescriptor = C.CBytes(securityDescriptor)
defer C.free(sa.SecurityDescriptor)
} }
h, err := createNamedPipe(path, flags, mode, cPIPE_UNLIMITED_INSTANCES, uint32(c.OutputBufferSize), uint32(c.InputBufferSize), 0, &sa) h, err := createNamedPipe(path, flags, mode, cPIPE_UNLIMITED_INSTANCES, uint32(c.OutputBufferSize), uint32(c.InputBufferSize), 0, sa)
if err != nil { if err != nil {
return 0, &os.PathError{Op: "open", Path: path, Err: err} return 0, &os.PathError{Op: "open", Path: path, Err: err}
} }