Attachment 91834 Details for Bug 73473 – gallium/rtasm: add support for SELinux

[patch] gallium/rtasm: add support for SELinux

0001-gallium-rtasm-add-support-for-SELinux.patch (text/plain), 2.02 KB, created by Emil Velikov on 2014-01-10 18:28:15 UTC

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Creator: Emil Velikov

Created: 2014-01-10 18:28:15 UTC

Size: 2.02 KB

patch

obsolete

>From 1751cf4a9790c242a7080a529dad76841dfe9e8c Mon Sep 17 00:00:00 2001
>From: Emil Velikov <emil.l.velikov@gmail.com>
>Date: Fri, 10 Jan 2014 18:00:17 +0000
>Subject: [PATCH] gallium/rtasm: add support for SELinux
>
>Implementation is identical to the one used by classic mesa.
>
>Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=73473
>Signed-off-by: Emil Velikov <emil.l.velikov@gmail.com>
>---
> src/gallium/auxiliary/rtasm/rtasm_execmem.c | 22 +++++++++++++++++++---
> 1 file changed, 19 insertions(+), 3 deletions(-)
>
>diff --git a/src/gallium/auxiliary/rtasm/rtasm_execmem.c b/src/gallium/auxiliary/rtasm/rtasm_execmem.c
>index edc1b66..16fb98a 100644
>--- a/src/gallium/auxiliary/rtasm/rtasm_execmem.c
>+++ b/src/gallium/auxiliary/rtasm/rtasm_execmem.c
>@@ -61,6 +61,10 @@
> #include <sys/mman.h>
> #include "util/u_mm.h"
> 
>+#ifdef MESA_SELINUX
>+#include <selinux/selinux.h>
>+#endif
>+
> #define EXEC_HEAP_SIZE (10*1024*1024)
> 
> pipe_static_mutex(exec_mutex);
>@@ -69,9 +73,17 @@ 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 = u_mmInit( 0, EXEC_HEAP_SIZE );
>    
>@@ -79,6 +91,8 @@ init_heap(void)
>       exec_mem = (unsigned char *) mmap(0, EXEC_HEAP_SIZE, 
> 					PROT_EXEC | PROT_READ | PROT_WRITE, 
> 					MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
>+
>+   return (exec_mem != MAP_FAILED);
> }
> 
> 
>@@ -90,7 +104,8 @@ rtasm_exec_malloc(size_t size)
> 
>    pipe_mutex_lock(exec_mutex);
> 
>-   init_heap();
>+   if (!init_heap())
>+      goto bail;
> 
>    if (exec_heap) {
>       size = (size + 31) & ~31;  /* next multiple of 32 bytes */
>@@ -101,7 +116,8 @@ rtasm_exec_malloc(size_t size)
>       addr = exec_mem + block->ofs;
>    else 
>       debug_printf("rtasm_exec_malloc failed\n");
>-   
>+
>+bail:
>    pipe_mutex_unlock(exec_mutex);
>    
>    return addr;
>-- 
>1.8.5.1
>

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