Moving files to new dir structure.

[pdclib] / platform / example / functions / stdlib / system.c

diff --git a/platform/example/functions/stdlib/system.c b/platform/example/functions/stdlib/system.c
new file mode 100644 (file)
index 0000000..41c3671
--- /dev/null
+++ b/platform/example/functions/stdlib/system.c
@@ -0,0 +1,48 @@
+/* $Id$ */
+
+/* Release $Name$ */
+
+/* system( const char * )
+
+   This file is part of the Public Domain C Library (PDCLib).
+   Permission is granted to use, modify, and / or redistribute at will.
+*/
+
+/* This is an example implementation of system() fit for use with POSIX kernels.
+*/
+
+#include <unistd.h>
+#include <sys/wait.h>
+
+int system( const char * string )
+{
+    char * const argv[] = { "sh", "-c", (char * const)string, NULL };
+    if ( string != NULL )
+    {
+        int pid = fork();
+        if ( pid == 0 )
+        {
+            execve( "/bin/sh", argv, NULL );
+        }
+        else if ( pid > 0 )
+        {
+            while( wait( NULL ) != pid );
+        }
+    }
+    return -1;
+}
+
+#ifdef TEST
+#include <_PDCLIB_test.h>
+#include <_PDCLIB_config.h>
+
+#define SHELLCOMMAND "echo 'SUCCESS testing system()'"
+
+int main()
+{
+    BEGIN_TESTS;
+    TESTCASE( system( SHELLCOMMAND ) );
+    return TEST_RESULTS;
+}
+
+#endif