support: Add envp argument to support_capture_subprogram

So tests can specify a list of environment variables.
Reviewed-by: Siddhesh Poyarekar <siddhesh@sourceware.org>

elf/tst-audit18.c

@@ -79,7 +79,7 @@ do_test (int argc, char *argv[])
 
   setenv ("LD_AUDIT", "tst-auditmod18.so", 0);
   struct support_capture_subprocess result
-    = support_capture_subprogram (spargv[0], spargv);
+    = support_capture_subprogram (spargv[0], spargv, NULL);
   support_capture_subprocess_check (&result, "tst-audit18", 0, sc_allow_stderr);
 
   struct

elf/tst-audit19b.c

@@ -69,7 +69,7 @@ do_test (int argc, char *argv[])
 
   setenv ("LD_AUDIT", "tst-auditmod18b.so", 0);
   struct support_capture_subprocess result
-    = support_capture_subprogram (spargv[0], spargv);
+    = support_capture_subprogram (spargv[0], spargv, NULL);
   support_capture_subprocess_check (&result, "tst-audit18b", 0, sc_allow_stderr);
 
   bool find_symbind = false;

elf/tst-audit22.c

@@ -83,7 +83,7 @@ do_test (int argc, char *argv[])
 
   setenv ("LD_AUDIT", "tst-auditmod22.so", 0);
   struct support_capture_subprocess result
-    = support_capture_subprogram (spargv[0], spargv);
+    = support_capture_subprogram (spargv[0], spargv, NULL);
   support_capture_subprocess_check (&result, "tst-audit22", 0, sc_allow_stderr);
 
   /* The respawned process should always print the vDSO address (otherwise it

elf/tst-audit23.c

@@ -82,7 +82,7 @@ do_test (int argc, char *argv[])
 
   setenv ("LD_AUDIT", "tst-auditmod23.so", 0);
   struct support_capture_subprocess result
-    = support_capture_subprogram (spargv[0], spargv);
+    = support_capture_subprogram (spargv[0], spargv, NULL);
   support_capture_subprocess_check (&result, "tst-audit22", 0, sc_allow_stderr);
 
   /* The expected la_objopen/la_objclose:

elf/tst-audit25a.c

@@ -77,7 +77,7 @@ do_test (int argc, char *argv[])
 
   {
     struct support_capture_subprocess result
-      = support_capture_subprogram (spargv[0], spargv);
+      = support_capture_subprogram (spargv[0], spargv, NULL);
     support_capture_subprocess_check (&result, "tst-audit25a", 0,
 				      sc_allow_stderr);
 
@@ -102,7 +102,7 @@ do_test (int argc, char *argv[])
   {
     setenv ("LD_BIND_NOW", "1", 0);
     struct support_capture_subprocess result
-      = support_capture_subprogram (spargv[0], spargv);
+      = support_capture_subprogram (spargv[0], spargv, NULL);
     support_capture_subprocess_check (&result, "tst-audit25a", 0,
 				      sc_allow_stderr);
 

elf/tst-audit25b.c

@@ -76,7 +76,7 @@ do_test (int argc, char *argv[])
 
   {
     struct support_capture_subprocess result
-      = support_capture_subprogram (spargv[0], spargv);
+      = support_capture_subprogram (spargv[0], spargv, NULL);
     support_capture_subprocess_check (&result, "tst-audit25a", 0,
 				      sc_allow_stderr);
 
@@ -102,7 +102,7 @@ do_test (int argc, char *argv[])
   {
     setenv ("LD_BIND_NOW", "1", 0);
     struct support_capture_subprocess result
-      = support_capture_subprogram (spargv[0], spargv);
+      = support_capture_subprogram (spargv[0], spargv, NULL);
     support_capture_subprocess_check (&result, "tst-audit25a", 0,
 				      sc_allow_stderr);
 

elf/tst-glibc-hwcaps-2-cache.c

@@ -32,7 +32,7 @@ main (int argc, char **argv)
   /* Run ldconfig to populate the cache.  */
   char *command = xasprintf ("%s/ldconfig", support_install_rootsbindir);
   struct support_capture_subprocess result =
-    support_capture_subprogram (command,  &((char *) { NULL }));
+    support_capture_subprogram (command,  &((char *) { NULL }), NULL);
   support_capture_subprocess_check (&result, "ldconfig", 0, sc_allow_none);
   free (command);
 

elf/tst-rtld-run-static.c

@@ -30,7 +30,7 @@ do_test (void)
   {
     char *argv[] = { (char *) "ld.so", ldconfig_path, (char *) "--help", NULL };
     struct support_capture_subprocess cap
-      = support_capture_subprogram (support_objdir_elf_ldso, argv);
+      = support_capture_subprogram (support_objdir_elf_ldso, argv, NULL);
     support_capture_subprocess_check (&cap, "no --argv0", 0, sc_allow_stdout);
     puts ("info: output without --argv0:");
     puts (cap.out.buffer);
@@ -46,7 +46,7 @@ do_test (void)
         ldconfig_path, (char *) "--help", NULL
       };
     struct support_capture_subprocess cap
-      = support_capture_subprogram (support_objdir_elf_ldso, argv);
+      = support_capture_subprogram (support_objdir_elf_ldso, argv, NULL);
     support_capture_subprocess_check (&cap, "with --argv0", 0, sc_allow_stdout);
     puts ("info: output with --argv0:");
     puts (cap.out.buffer);

elf/tst-tunables-enable_secure.c

@@ -113,7 +113,7 @@ do_test (int argc, char *argv[])
       printf ("[%d] Spawned test for %s\n", i, tests[i].env);
       setenv ("GLIBC_TUNABLES", tests[i].env, 1);
       struct support_capture_subprocess result
-	= support_capture_subprogram (spargv[0], spargv);
+	= support_capture_subprogram (spargv[0], spargv, NULL);
       support_capture_subprocess_check (&result, "tst-tunables-enable_secure",
 		                        0, sc_allow_stderr);
       support_capture_subprocess_free (&result);

elf/tst-tunables.c

@@ -396,7 +396,7 @@ do_test (int argc, char *argv[])
 	      tests[i].value);
       setenv (tests[i].name, tests[i].value, 1);
       struct support_capture_subprocess result
-	= support_capture_subprogram (spargv[0], spargv);
+	= support_capture_subprogram (spargv[0], spargv, NULL);
       support_capture_subprocess_check (&result, "tst-tunables", 0,
 					sc_allow_stderr);
       support_capture_subprocess_free (&result);

support/capture_subprocess.h

@@ -35,11 +35,12 @@ struct support_capture_subprocess
 struct support_capture_subprocess support_capture_subprocess
   (void (*callback) (void *), void *closure);
 
-/* Issue FILE with ARGV arguments by using posix_spawn and capture standard
+/* Issue FILE with ARGV arguments and ENVP environments by using posix_spawn
-   output, standard error, and the exit status.  The out.buffer and err.buffer
+   and capture standard output, standard error, and the exit status.  If
-   are handle as support_capture_subprocess.  */
+   ENVP is NULL the current environment variable is used.  The out.buffer and
+   err.buffer are handle by support_capture_subprocess.  */
 struct support_capture_subprocess support_capture_subprogram
-  (const char *file, char *const argv[]);
+  (const char *file, char *const argv[], char *const envp[]);
 
 /* Copy the running program into a setgid binary and run it with CHILD_ID
    argument.  If execution is successful, return the exit status of the child

support/subprocess.h

@@ -33,10 +33,11 @@ struct support_subprocess
 struct support_subprocess support_subprocess
   (void (*callback) (void *), void *closure);
 
-/* Issue FILE with ARGV arguments by using posix_spawn and return is PID, a
+/* Issue FILE with ARGV arguments and ENVP environments by using posix_spawn
-   pipe redirected to STDOUT, and a pipe redirected to STDERR.  */
+   and return is PID, a pipe redirected to STDOUT, and a pipe redirected to
+   STDERR.  If ENVP is NULL the current environment variable is used.  */
 struct support_subprocess support_subprogram
-  (const char *file, char *const argv[]);
+  (const char *file, char *const argv[], char *const envp[]);
 
 /* Invoke program FILE with ARGV arguments by using posix_spawn and wait for it
    to complete.  Return program exit status.  */

support/support_capture_subprocess.c

@@ -93,13 +93,14 @@ support_capture_subprocess (void (*callback) (void *), void *closure)
 }
 
 struct support_capture_subprocess
-support_capture_subprogram (const char *file, char *const argv[])
+support_capture_subprogram (const char *file, char *const argv[],
+			    char *const envp[])
 {
   struct support_capture_subprocess result;
   xopen_memstream (&result.out);
   xopen_memstream (&result.err);
 
-  struct support_subprocess proc = support_subprogram (file, argv);
+  struct support_subprocess proc = support_subprogram (file, argv, envp);
 
   support_capture_poll (&result, &proc);
   return result;

support/support_subprocess.c

@@ -69,7 +69,7 @@ support_subprocess (void (*callback) (void *), void *closure)
 }
 
 struct support_subprocess
-support_subprogram (const char *file, char *const argv[])
+support_subprogram (const char *file, char *const argv[], char *const envp[])
 {
   struct support_subprocess result = support_subprocess_init ();
 
@@ -84,7 +84,8 @@ support_subprogram (const char *file, char *const argv[])
   xposix_spawn_file_actions_addclose (&fa, result.stdout_pipe[1]);
   xposix_spawn_file_actions_addclose (&fa, result.stderr_pipe[1]);
 
-  result.pid = xposix_spawn (file, &fa, NULL, argv, environ);
+  result.pid = xposix_spawn (file, &fa, NULL, argv,
+			     envp == NULL ? environ : envp);
 
   xclose (result.stdout_pipe[1]);
   xclose (result.stderr_pipe[1]);

support/tst-support_capture_subprocess.c

@@ -238,7 +238,7 @@ do_subprogram (const struct test *test)
   args[argc]   = NULL;
   TEST_VERIFY (argc < argv_size);
 
-  return support_capture_subprogram (args[0], args);
+  return support_capture_subprogram (args[0], args, NULL);
 }
 
 enum test_type

sysdeps/x86/tst-hwcap-tunables.c

@@ -133,7 +133,7 @@ do_test (int argc, char *argv[])
       setenv ("GLIBC_TUNABLES", tunable, 1);
 
       struct support_capture_subprocess result
-	= support_capture_subprogram (spargv[0], spargv);
+	= support_capture_subprogram (spargv[0], spargv, NULL);
       support_capture_subprocess_check (&result, "tst-tunables", 0,
 					sc_allow_stderr);
       support_capture_subprocess_free (&result);