closefrom: Close all file descriptors above a certain value.

[ccan] / tools / configurator / configurator.c

diff --git a/tools/configurator/configurator.c b/tools/configurator/configurator.c
index 9487e694ce2329a5e74300c1ca596661943ced27..57779f29905b68d82e537e8c4f0c49c2d282ebec 100644 (file)
--- a/tools/configurator/configurator.c
+++ b/tools/configurator/configurator.c
@@ -498,6 +498,43 @@ static const struct test base_tests[] = {
          "     return __builtin_cpu_supports(\"mmx\");\n"
          "}"
        },
+       { "HAVE_CLOSEFROM", "closefrom() offered by system",
+         "DEFINES_EVERYTHING", NULL, NULL,
+         "#include <stdlib.h>\n"
+         "#include <unistd.h>\n"
+         "int main(void) {\n"
+         "    closefrom(STDERR_FILENO + 1);\n"
+         "    return 0;\n"
+         "}\n"
+       },
+       { "HAVE_F_CLOSEM", "F_CLOSEM defined for fctnl.",
+         "DEFINES_EVERYTHING", NULL, NULL,
+         "#include <fcntl.h>\n"
+         "#include <unistd.h>\n"
+         "int main(void) {\n"
+         "    int res = fcntl(STDERR_FILENO + 1, F_CLOSEM, 0);\n"
+         "    return res < 0;\n"
+         "}\n"
+       },
+       { "HAVE_NR_CLOSE_RANGE", "close_range syscall available as __NR_close_range.",
+         "DEFINES_EVERYTHING", NULL, NULL,
+         "#include <limits.h>\n"
+         "#include <sys/syscall.h>\n"
+         "#include <unistd.h>\n"
+         "int main(void) {\n"
+         "    int res = syscall(__NR_close_range, STDERR_FILENO + 1, INT_MAX, 0);\n"
+         "    return res < 0;\n"
+         "}\n"
+       },
+       { "HAVE_F_MAXFD", "F_MAXFD defined for fcntl.",
+         "DEFINES_EVERYTHING", NULL, NULL,
+         "#include <fcntl.h>\n"
+         "#include <unistd.h>\n"
+         "int main(void) {\n"
+         "    int res = fcntl(0, F_MAXFD);\n"
+         "    return res < 0;\n"
+         "}\n"
+       },
 };
 
 static void c12r_err(int eval, const char *fmt, ...)
@@ -765,9 +802,7 @@ static bool run_test(const char *cmd, const char *wrapper, struct test *test)
                        strcpy(cmd, wrapper);
                        strcat(cmd, " ." DIR_SEP OUTPUT_FILE);
                        output = run(cmd, &status);
-                       if (wrapper) {
-                               free(cmd);
-                       }
+                       free(cmd);
                        if (!strstr(test->style, "EXECUTE") && status != 0)
                                c12r_errx(EXIT_BAD_TEST,
                                          "Test for %s failed with %i:\n%s",