[glibc/azanella/tunables] elf: Add GLIBC_TUNABLES to unsecvars

[Adhemerval Zanella <azanella@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=glibc.git;h=3552e1dc2b6ba98a718b3f050e9cbfb9abda1768

commit 3552e1dc2b6ba98a718b3f050e9cbfb9abda1768
Author: Adhemerval Zanella <adhemerval.zanella@linaro.org>
Date:   Thu Oct 5 10:09:19 2023 -0300

    elf: Add GLIBC_TUNABLES to unsecvars
    
    TODO

Diff:
---
 elf/tst-env-setuid-tunables.c | 11 +++--------
 sysdeps/generic/unsecvars.h   |  1 +
 2 files changed, 4 insertions(+), 8 deletions(-)

diff --git a/elf/tst-env-setuid-tunables.c b/elf/tst-env-setuid-tunables.c
index 1716c97088..70e9ed78e8 100644
--- a/elf/tst-env-setuid-tunables.c
+++ b/elf/tst-env-setuid-tunables.c
@@ -64,15 +64,10 @@ test_child (int off)
 
   printf ("    [%d] GLIBC_TUNABLES is %s\n", off, val);
   fflush (stdout);
-  if (val == NULL)
-    printf ("    [%d] GLIBC_TUNABLES environment variable absent\n", off);
+  if (val != NULL)
+    printf ("    [%d] Unexpected GLIBC_TUNABLES VALUE %s\n", off, val);
   else
-    {
-      if (strcmp (val, teststrings[off]) != 0)
-	printf ("    [%d] Unexpected GLIBC_TUNABLES VALUE %s\n", off, val);
-      else
-	ret = 0;
-    }
+    ret = 0;
   fflush (stdout);
 
   int32_t check = TUNABLE_GET_FULL (glibc, malloc, check, int32_t, NULL);
diff --git a/sysdeps/generic/unsecvars.h b/sysdeps/generic/unsecvars.h
index ca70e2e989..f7ebed60e5 100644
--- a/sysdeps/generic/unsecvars.h
+++ b/sysdeps/generic/unsecvars.h
@@ -4,6 +4,7 @@
 #define UNSECURE_ENVVARS \
   "GCONV_PATH\0"							      \
   "GETCONF_DIR\0"							      \
+  "GLIBC_TUNABLES\0"							      \
   "HOSTALIASES\0"							      \
   "LD_AUDIT\0"								      \
   "LD_DEBUG\0"								      \