/*
* Mesa 3-D graphics library
- * Version: 6.5
*
* Copyright (C) 1999-2005 Brian Paul All Rights Reserved.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
- * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
- * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
*/
/**
- * \file exemem.c
+ * \file execmem.c
* Functions for allocating executable memory.
*
* \author Keith Whitwell
*/
+#include <stdio.h>
#include "imports.h"
-#include "glapi/glthread.h"
-#if defined(__linux__)
+#if defined(__linux__) || defined(__OpenBSD__) || defined(_NetBSD__) || defined(__sun) || defined(__HAIKU__)
/*
* Allocate a large block of memory which can hold code then dole it out
#include <sys/mman.h>
#include "mm.h"
+#ifdef MESA_SELINUX
+#include <selinux/selinux.h>
+#endif
+
+
+#ifndef MAP_ANONYMOUS
+#define MAP_ANONYMOUS MAP_ANON
+#endif
+
+
#define EXEC_HEAP_SIZE (10*1024*1024)
-_glthread_DECLARE_STATIC_MUTEX(exec_mutex);
+static mtx_t exec_mutex = _MTX_INITIALIZER_NP;
static struct mem_block *exec_heap = NULL;
static unsigned char *exec_mem = NULL;
-static void
+static int
init_heap(void)
{
+#ifdef MESA_SELINUX
+ if (is_selinux_enabled()) {
+ if (!security_get_boolean_active("allow_execmem") ||
+ !security_get_boolean_pending("allow_execmem"))
+ return 0;
+ }
+#endif
+
if (!exec_heap)
exec_heap = mmInit( 0, EXEC_HEAP_SIZE );
if (!exec_mem)
- exec_mem = (unsigned char *) mmap(0, EXEC_HEAP_SIZE,
- PROT_EXEC | PROT_READ | PROT_WRITE,
- MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
+ exec_mem = mmap(NULL, EXEC_HEAP_SIZE, PROT_EXEC | PROT_READ | PROT_WRITE,
+ MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
+
+ return (exec_mem != MAP_FAILED);
}
struct mem_block *block = NULL;
void *addr = NULL;
- _glthread_LOCK_MUTEX(exec_mutex);
+ mtx_lock(&exec_mutex);
- init_heap();
+ if (!init_heap())
+ goto bail;
if (exec_heap) {
size = (size + 31) & ~31;
if (block)
addr = exec_mem + block->ofs;
else
- _mesa_printf("_mesa_exec_malloc failed\n");
-
- _glthread_UNLOCK_MUTEX(exec_mutex);
+ printf("_mesa_exec_malloc failed\n");
+
+bail:
+ mtx_unlock(&exec_mutex);
return addr;
}
void
_mesa_exec_free(void *addr)
{
- _glthread_LOCK_MUTEX(exec_mutex);
+ mtx_lock(&exec_mutex);
if (exec_heap) {
struct mem_block *block = mmFindBlock(exec_heap, (unsigned char *)addr - exec_mem);
mmFreeMem(block);
}
- _glthread_UNLOCK_MUTEX(exec_mutex);
+ mtx_unlock(&exec_mutex);
}
void *
_mesa_exec_malloc(GLuint size)
{
- return _mesa_malloc( size );
+ return malloc( size );
}
void
_mesa_exec_free(void *addr)
{
- _mesa_free(addr);
+ free(addr);
}