X-Git-Url: https://pd.if.org/git/?a=blobdiff_plain;f=platform%2Fexample%2Ffunctions%2Fstdlib%2Fsystem.c;h=8b5d4d7023270471dec3eddb1d5728369ef58ed3;hb=d865c4403fc91d1f1ac95ba76febcee9f429bb97;hp=41c36718c76b357745bba3e9632bf05749c8af4c;hpb=3f6094115e79a45413f08361b68b71eb08da306e;p=pdclib

diff --git a/platform/example/functions/stdlib/system.c b/platform/example/functions/stdlib/system.c
index 41c3671..8b5d4d7 100644
--- a/platform/example/functions/stdlib/system.c
+++ b/platform/example/functions/stdlib/system.c
@@ -1,28 +1,27 @@
-/* $Id$ */
-
-/* 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.
 */
 
+#include <stdlib.h>
+
 /* This is an example implementation of system() fit for use with POSIX kernels.
 */
 
-#include <unistd.h>
-#include <sys/wait.h>
+extern int fork( void );
+extern int execve( const char * filename, char * const argv[], char * const envp[] );
+extern int wait( int * status );
 
 int system( const char * string )
 {
-    char * const argv[] = { "sh", "-c", (char * const)string, NULL };
+    char const * const argv[] = { "sh", "-c", (char const * const)string, NULL };
     if ( string != NULL )
     {
         int pid = fork();
         if ( pid == 0 )
         {
-            execve( "/bin/sh", argv, NULL );
+            execve( "/bin/sh", (char * * const)argv, NULL );
         }
         else if ( pid > 0 )
         {
@@ -33,15 +32,24 @@ int system( const char * string )
 }
 
 #ifdef TEST
-#include <_PDCLIB_test.h>
-#include <_PDCLIB_config.h>
+
+#include "_PDCLIB_test.h"
 
 #define SHELLCOMMAND "echo 'SUCCESS testing system()'"
 
-int main()
+int main( void )
 {
-    BEGIN_TESTS;
+    FILE * fh;
+    char buffer[25];
+    buffer[24] = 'x';
+    TESTCASE( ( fh = freopen( testfile, "wb+", stdout ) ) != NULL );
     TESTCASE( system( SHELLCOMMAND ) );
+    rewind( fh );
+    TESTCASE( fread( buffer, 1, 24, fh ) == 24 );
+    TESTCASE( memcmp( buffer, "SUCCESS testing system()", 24 ) == 0 );
+    TESTCASE( buffer[24] == 'x' );
+    TESTCASE( fclose( fh ) == 0 );
+    TESTCASE( remove( testfile ) == 0 );
     return TEST_RESULTS;
 }