# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1716754700 -7200
# Node ID b2d63bdb1d548b4a53cbae8f9d5a9c890e277da1
# Parent  046eef71b69d568dafd96a3f96cd1dc6e386d0d8
Added a test of a popenv (popen using a vector) C library function.

diff -r 046eef71b69d -r b2d63bdb1d54 test_files/programs/Makefile
--- a/test_files/programs/Makefile	Sun May 26 22:17:39 2024 +0200
+++ b/test_files/programs/Makefile	Sun May 26 22:18:20 2024 +0200
@@ -1,7 +1,7 @@
 PKGDIR		?= ..
 L4DIR		?= $(PKGDIR)/../../..
 
-TARGET		= cat clip dstest_exec_payload ls test_systemv
+TARGET		= cat clip dstest_exec_payload ls test_popenv test_systemv
 
 MODE            = static_newlib
 
@@ -13,6 +13,8 @@
 
 SRC_C_ls			= ls.c
 
+SRC_C_test_popenv		= test_popenv.c
+
 SRC_C_test_systemv		= test_systemv.c
 
 REQUIRES_LIBS	= libe2access
diff -r 046eef71b69d -r b2d63bdb1d54 test_files/programs/test_popenv.c
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/test_files/programs/test_popenv.c	Sun May 26 22:18:20 2024 +0200
@@ -0,0 +1,83 @@
+/*
+ * Run a program using the supplied arguments.
+ *
+ * Copyright (C) 2024 Paul Boddie <paul@boddie.org.uk>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA  02110-1301, USA
+ */
+
+#include <stdio.h>
+#include <sys/types.h>
+#include <errno.h>
+
+/* NOTE: To be provided via a header. */
+
+extern pid_t popenv(int, const char *[], FILE **input, FILE **output, FILE **error);
+
+
+
+/* Transfer size for communication. */
+
+static const offset_t TO_TRANSFER = 1024;
+
+
+
+/* List objects in the filesystem image. */
+
+int main(int argc, char *argv[])
+{
+    FILE *input, *output, *error;
+    pid_t pid;
+    char buffer[TO_TRANSFER];
+    size_t nread;
+
+    if (argc < 2)
+    {
+        printf("Usage: test_popenv <program> <argument>...\n");
+        return 1;
+    }
+
+    printf("Running: %s\n", argv[1]);
+
+    pid = popenv(argc - 1, (const char **) argv + 1, &input, &output, &error);
+
+    if (pid == -1)
+    {
+        printf("Error: %d\n", errno);
+        return 1;
+    }
+
+    printf("Process: %d\n", pid);
+
+    /* Wait for events on the streams and the process.
+       NOTE: Currently just reading from the process. */
+
+    while ((nread = fread(buffer, sizeof(char), TO_TRANSFER, output)))
+    {
+        if (!fwrite(buffer, sizeof(char), nread, stdout))
+            break;
+    }
+
+    fclose(input);
+    fclose(output);
+
+    /* NOTE: Error not yet used. */
+
+    return 0;
+}
+
+/* vim: tabstop=4 expandtab shiftwidth=4
+*/