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authorUlrich Drepper <drepper@redhat.com>2007-12-17 00:00:57 +0000
committerUlrich Drepper <drepper@redhat.com>2007-12-17 00:00:57 +0000
commitd9961b6a4ff8282a1700aa176c1c3f66b63f4bc6 (patch)
tree440e6eeb86b762678e3100675950396115179993 /elf/tst-execstack.c
parentbe8c1500c7ce61b478cdc827705054c054386258 (diff)
* elf/tst-execstack.c (do_test): Don't fail if SELinux forbids
executable stacks.
Diffstat (limited to 'elf/tst-execstack.c')
-rw-r--r--elf/tst-execstack.c41
1 files changed, 38 insertions, 3 deletions
diff --git a/elf/tst-execstack.c b/elf/tst-execstack.c
index 4b06615451..a835e4c0d6 100644
--- a/elf/tst-execstack.c
+++ b/elf/tst-execstack.c
@@ -2,6 +2,7 @@
on load of a DSO that requires executable stacks. */
#include <dlfcn.h>
+#include <stdbool.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
@@ -45,9 +46,43 @@ waiter_thread (void *arg)
}
#endif
+
+static bool allow_execstack = true;
+
+
static int
do_test (void)
{
+ /* Check whether SELinux is enabled and disallows executable stacks. */
+ FILE *fp = fopen ("/selinux/enforce", "r");
+ if (fp != NULL)
+ {
+ char *line = NULL;
+ size_t linelen = 0;
+
+ bool enabled = false;
+ ssize_t n = getline (&line, &linelen, fp);
+ if (n > 0 && line[0] != '0')
+ enabled = true;
+
+ fclose (fp);
+
+ if (enabled)
+ {
+ fp = fopen ("/selinux/booleans/allow_execstack", "r");
+ if (fp != NULL)
+ {
+ n = getline (&line, &linelen, fp);
+ if (n > 0 && line[0] == '0')
+ allow_execstack = false;
+ }
+
+ fclose (fp);
+ }
+ }
+
+ printf ("executable stacks %sallowed\n", allow_execstack ? "" : "not ");
+
static void *f; /* Address of this is used in other threads. */
#if USE_PTHREADS
@@ -77,7 +112,7 @@ do_test (void)
if (h == NULL)
{
printf ("cannot load: %s\n", dlerror ());
- return 1;
+ return allow_execstack;
}
f = dlsym (h, "tryme");
@@ -113,10 +148,10 @@ do_test (void)
Let them run to test it. */
pthread_barrier_wait (&go_barrier);
- pthread_exit (0);
+ pthread_exit (! allow_execstack);
#endif
- return 0;
+ return ! allow_execstack;
}
static void