confstr() support for RTEMS

Closes #3373

confstr() style update

Signed-off-by: Eshan Dhawan <eshandhawan51@gmail.com>

10 files changed, 277 insertions, 0 deletions

diff --git a/cpukit/Makefile.am b/cpukit/Makefile.am
index dfa5fb2412..1afac8f7dc 100644
--- a/cpukit/Makefile.am
+++ b/cpukit/Makefile.am
@@ -509,6 +509,7 @@ librtemscpu_a_SOURCES += posix/src/condsignalsupp.c
 librtemscpu_a_SOURCES += posix/src/condtimedwait.c
 librtemscpu_a_SOURCES += posix/src/condwait.c
 librtemscpu_a_SOURCES += posix/src/condwaitsupp.c
+librtemscpu_a_SOURCES += posix/src/confstr.c
 librtemscpu_a_SOURCES += posix/src/_execve.c
 librtemscpu_a_SOURCES += posix/src/fork.c
 librtemscpu_a_SOURCES += posix/src/key.c
diff --git a/cpukit/posix/src/confstr.c b/cpukit/posix/src/confstr.c
new file mode 100644
index 0000000000..bf27ca3c38
--- /dev/null
+++ b/cpukit/posix/src/confstr.c
@@ -0,0 +1,127 @@
+/* SPDX-License-Identifier: BSD-2-Clause */
+
+/**
+ *  @file
+ *  @brief Implementation for confstr method
+ */
+
+/*
+ * Copyright (C) 2020 Eshan Dhawan
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+
+#include <sys/cdefs.h>
+#include <sys/param.h>
+#include <errno.h>
+#include <limits.h>
+#include <string.h>
+#include <unistd.h>
+
+/* Many programming environment flags have same values
+* this block is added to raise error if the flags value change
+*/
+
+#if (_CS_POSIX_V6_ILP32_OFF32_CFLAGS != _CS_POSIX_V7_ILP32_OFF32_CFLAGS)
+#error "_CS_POSIX_V6_ILP32_OFF32_CFLAGS and _CS_POSIX_V7_ILP32_OFF32_CFLAGS flag values not equal"
+#endif
+
+#if (_CS_POSIX_V6_ILP32_OFF32_LDFLAGS != _CS_POSIX_V7_ILP32_OFF32_LDFLAGS)
+#error "_CS_POSIX_V6_ILP32_OFF32_LDFLAGS and _CS_POSIX_V7_ILP32_OFF32_LDFLAGS flag values not equal"
+#endif
+
+#if (_CS_POSIX_V6_ILP32_OFF32_LIBS!= _CS_POSIX_V7_ILP32_OFF32_LIBS)
+#error "_CS_POSIX_V6_ILP32_OFF32_LIBS and _CS_POSIX_V7_ILP32_OFF32_LIBS flag values not equal"
+#endif
+
+#if (_CS_POSIX_V6_LPBIG_OFFBIG_CFLAGS != _CS_POSIX_V7_LPBIG_OFFBIG_CFLAGS)
+#error "_CS_POSIX_V6_LPBIG_OFFBIG_CFLAG and _CS_POSIX_V7_LPBIG_OFFBIG_CFLAG flag values not equal"
+#endif
+
+#if (_CS_POSIX_V6_LPBIG_OFFBIG_LDFLAGS != _CS_POSIX_V7_LPBIG_OFFBIG_LDFLAGS)
+#error "_CS_POSIX_V6_LPBIG_OFFBIG_LDFLAGS and _CS_POSIX_V7_LPBIG_OFFBIG_LDFLAGS flag values not equal"
+#endif
+
+#if (_CS_POSIX_V7_LPBIG_OFFBIG_LIBS != _CS_POSIX_V7_LPBIG_OFFBIG_LIBS)
+#error "_CS_POSIX_V6_LPBIG_OFFBIG_LIBS and _CS_POSIX_V7_LPBIG_OFFBIG_LIBS flag values not equal"
+#endif
+
+#if (_CS_POSIX_V6_ILP32_OFFBIG_CFLAGS != _CS_POSIX_V7_ILP32_OFFBIG_CFLAGS)
+#error "_CS_POSIX_V6_ILP32_OFFBIG_CFLAGS and _CS_POSIX_V7_ILP32_OFFBIG_CFLAGS flag values not equal"
+#endif
+
+#if (_CS_POSIX_V7_ILP32_OFFBIG_LDFLAGS != _CS_POSIX_V6_ILP32_OFFBIG_LDFLAGS)
+#error "_CS_POSIX_V6_ILP32_OFFBIG_LDFLAGS and _CS_POSIX_V7_ILP32_OFFBIG_LDFLAGS flag values not equal"
+#endif
+
+#if (_CS_POSIX_V7_ILP32_OFFBIG_LIBS != _CS_POSIX_V7_ILP32_OFFBIG_LIBS)
+#error "_CS_POSIX_V6_ILP32_OFFBIG_LIBS and _CS_POSIX_V7_ILP32_OFFBIG_LIBS flag values not equal"
+#endif
+
+#if (_CS_POSIX_V6_LP64_OFF64_CFLAGS != _CS_POSIX_V7_LP64_OFF64_CFLAGS)
+#error "_CS_POSIX_V6_LP64_OFF64_CFLAGS and _CS_POSIX_V7_LP64_OFF64_CFLAGS flag values not equal"
+#endif
+
+#if (_CS_POSIX_V6_LP64_OFF64_LDFLAGS != _CS_POSIX_V7_LP64_OFF64_LDFLAGS)
+#error "_CS_POSIX_V6_LP64_OFF64_LDFLAGS and _CS_POSIX_V7_LP64_OFF64_LDFLAGS flag values not equal"
+#endif
+
+#if (_CS_POSIX_V7_LP64_OFF64_LIBS != _CS_POSIX_V7_LP64_OFF64_LIBS)
+#error "_CS_POSIX_V6_LP64_OFF64_LIBS and _CS_POSIX_V7_LP64_OFF64_LIBS flag values not equal"
+#endif
+
+#if (_CS_V6_ENV != _CS_V7_ENV)
+#error "_CS_V6_ENV and _CS_V7_ENV flag values not equal"
+#endif
+
+size_t confstr(int name, char *buf, size_t len){
+  const char *p;
+  const char UPE[] = "unsupported programming environment";
+
+  switch (name) {
+    case _CS_PATH:
+      errno = EINVAL;
+      return (0);
+    case _CS_POSIX_V7_ILP32_OFF32_CFLAGS:
+    case _CS_POSIX_V7_ILP32_OFF32_LDFLAGS:
+    case _CS_POSIX_V7_ILP32_OFF32_LIBS:
+    case _CS_POSIX_V7_LPBIG_OFFBIG_CFLAGS:
+    case _CS_POSIX_V7_LPBIG_OFFBIG_LDFLAGS:
+    case _CS_POSIX_V7_LPBIG_OFFBIG_LIBS:
+    case _CS_POSIX_V7_ILP32_OFFBIG_CFLAGS:
+    case _CS_POSIX_V7_ILP32_OFFBIG_LDFLAGS:
+    case _CS_POSIX_V7_ILP32_OFFBIG_LIBS:
+    case _CS_POSIX_V7_LP64_OFF64_CFLAGS:
+    case _CS_POSIX_V7_LP64_OFF64_LDFLAGS:
+    case _CS_POSIX_V7_LP64_OFF64_LIBS:
+    case _CS_V7_ENV:
+      p = UPE;
+      if (len != 0 && buf != NULL){
+        strlcpy(buf, p, len);
+      }
+      return (strlen(p) + 1);
+    default:
+      errno = EINVAL;
+      return (0);
+  }
+}
diff --git a/spec/build/cpukit/librtemscpu.yml b/spec/build/cpukit/librtemscpu.yml
index 0abff9d439..48266d408b 100644
--- a/spec/build/cpukit/librtemscpu.yml
+++ b/spec/build/cpukit/librtemscpu.yml
@@ -1009,6 +1009,7 @@ source:
 - cpukit/posix/src/condtimedwait.c
 - cpukit/posix/src/condwait.c
 - cpukit/posix/src/condwaitsupp.c
+- cpukit/posix/src/confstr.c
 - cpukit/posix/src/fork.c
 - cpukit/posix/src/key.c
 - cpukit/posix/src/keycreate.c
diff --git a/spec/build/testsuites/psxtests/grp.yml b/spec/build/testsuites/psxtests/grp.yml
index fb7ce465ae..8de96e7c7d 100644
--- a/spec/build/testsuites/psxtests/grp.yml
+++ b/spec/build/testsuites/psxtests/grp.yml
@@ -90,6 +90,8 @@ links:
 - role: build-dependency
   uid: psxconfig01
 - role: build-dependency
+  uid: psxconfstr
+- role: build-dependency
   uid: psxdevctl01
 - role: build-dependency
   uid: psxeintrjoin
diff --git a/spec/build/testsuites/psxtests/psxconfstr.yml b/spec/build/testsuites/psxtests/psxconfstr.yml
new file mode 100644
index 0000000000..252fc4601d
--- /dev/null
+++ b/spec/build/testsuites/psxtests/psxconfstr.yml
@@ -0,0 +1,20 @@
+SPDX-License-Identifier: CC-BY-SA-4.0 OR BSD-2-Clause
+build-type: test-program
+cflags: []
+copyrights:
+- Copyright (C) 2020 Eshan Dhawan (eshandhawan51@gmail.com)
+cppflags: []
+cxxflags: []
+enabled-by: true
+features: c cprogram
+includes: []
+ldflags: []
+links: []
+source:
+- testsuites/psxtests/psxconfstr/init.c
+stlib:
+- m
+target: testsuites/psxtests/psxconfstr.exe
+type: build
+use-after: []
+use-before: []
diff --git a/testsuites/psxtests/Makefile.am b/testsuites/psxtests/Makefile.am
index a35f00b665..386fbb1eed 100755
--- a/testsuites/psxtests/Makefile.am
+++ b/testsuites/psxtests/Makefile.am
@@ -358,6 +358,15 @@ psxconfig01_CPPFLAGS = $(AM_CPPFLAGS) $(TEST_FLAGS_psxconfig01) \
 	$(support_includes) -I$(top_srcdir)/include
 endif
 
+
+psx_tests += psxconfstr
+psx_screens += psxconfstr/psxconfstr.scn
+psx_docs += psxconfstr/psxconfstr.doc
+psxconfstr_SOURCES = psxconfstr/init.c
+psxconfstr_CPPFLAGS = $(AM_CPPFLAGS) $(TEST_FLAGS_psxconfstr) \
+	$(support_includes)
+
+
 if TEST_psxdevctl01
 psx_tests += psxdevctl01
 psx_screens += psxdevctl01/psxdevctl01.scn
diff --git a/testsuites/psxtests/configure.ac b/testsuites/psxtests/configure.ac
index 3f95010cd3..1ad6cc58fe 100644
--- a/testsuites/psxtests/configure.ac
+++ b/testsuites/psxtests/configure.ac
@@ -80,6 +80,7 @@ RTEMS_TEST_CHECK([psxconcurrency01])
 RTEMS_TEST_CHECK([psxcond01])
 RTEMS_TEST_CHECK([psxcond02])
 RTEMS_TEST_CHECK([psxconfig01])
+RTEMS_TEST_CHECK([psxconfstr])
 RTEMS_TEST_CHECK([psxdevctl01])
 RTEMS_TEST_CHECK([psxeintr_join])
 RTEMS_TEST_CHECK([psxenosys])
diff --git a/testsuites/psxtests/psxconfstr/init.c b/testsuites/psxtests/psxconfstr/init.c
new file mode 100644
index 0000000000..91eb8dd687
--- /dev/null
+++ b/testsuites/psxtests/psxconfstr/init.c
@@ -0,0 +1,97 @@
+/* SPDX-License-Identifier: BSD-2-Clause */
+
+/**
+ *  @file
+ *  @brief Test suite for confstr method
+ */
+
+/*
+ * Copyright (C) 2020 Eshan Dhawan
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include <errno.h>
+#include <stdio.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <rtems/test.h>
+#include <rtems/test-info.h>
+
+const char rtems_test_name[] = "PSXCONFSTR";
+
+/* init test function begins */
+T_TEST_CASE(confstr)
+{
+
+  int r;
+  char * buf = "";
+  const char UPE[] = "unsupported programming environment";
+  size_t len1;
+  len1 = strlen(UPE) + 1;
+  r = confstr(_CS_PATH, buf, sizeof(buf));
+  T_quiet_psx_success(r);
+
+  r = confstr(_CS_POSIX_V6_ILP32_OFFBIG_CFLAGS, buf, sizeof(buf));
+  T_quiet_eq_int(r, len1);
+
+  r = confstr(_CS_POSIX_V6_LP64_OFF64_LDFLAGS, buf, sizeof(buf));
+  T_quiet_eq_int(r, len1);
+
+  r = confstr(_CS_POSIX_V7_ILP32_OFF32_CFLAGS, buf, sizeof(buf));
+  T_quiet_eq_int(r, len1);
+
+  r = confstr(_CS_POSIX_V7_ILP32_OFFBIG_CFLAGS, buf, sizeof(buf));
+  T_quiet_eq_int(r, len1);
+
+  r = confstr(_CS_POSIX_V7_LP64_OFF64_LIBS, buf, sizeof(buf));
+  T_quiet_eq_int(r, len1);
+
+  r = confstr(_CS_POSIX_V6_LP64_OFF64_CFLAGS, buf, sizeof(buf));
+  T_quiet_eq_int(r, len1);
+
+  r = confstr(_CS_PATH, buf, sizeof(buf));
+  T_quiet_psx_success(r);
+
+}
+
+static rtems_task Init(rtems_task_argument ignored)
+{
+  rtems_test_run(ignored, TEST_STATE);
+}
+#define CONFIGURE_APPLICATION_DOES_NOT_NEED_CLOCK_DRIVER
+#define CONFIGURE_APPLICATION_NEEDS_CONSOLE_DRIVER
+
+#define CONFIGURE_MAXIMUM_TASKS 1
+
+#define CONFIGURE_INITIAL_EXTENSIONS RTEMS_TEST_INITIAL_EXTENSION
+
+#define CONFIGURE_RTEMS_INIT_TASKS_TABLE
+#define CONFIGURE_INIT
+
+#include <rtems/confdefs.h>
+/* end of file */
diff --git a/testsuites/psxtests/psxconfstr/psxconfstr.doc b/testsuites/psxtests/psxconfstr/psxconfstr.doc
new file mode 100644
index 0000000000..fbf85900f4
--- /dev/null
+++ b/testsuites/psxtests/psxconfstr/psxconfstr.doc
@@ -0,0 +1,16 @@
+#  COPYRIGHT (c) 2020
+#  On-Line Applications Research Corporation (OAR).
+#
+# SPDX-License-Identifier: BSD-2-Clause
+#
+
+This file describes the directives and concepts tested by this test set.
+
+test set name:  psxconfstr
+
+Directives:
+  confstr()
+
+Concepts:
+
++ This test exercises the confstr method
diff --git a/testsuites/psxtests/psxconfstr/psxconfstr.scn b/testsuites/psxtests/psxconfstr/psxconfstr.scn
new file mode 100644
index 0000000000..dcb3ad908b
--- /dev/null
+++ b/testsuites/psxtests/psxconfstr/psxconfstr.scn
@@ -0,0 +1,3 @@
+*** BEGIN OF TEST PSXCONFSTR ***
+
+*** END OF TEST PSXCONFSTR ***