X-Git-Url: https://pd.if.org/git/?a=blobdiff_plain;f=platform%2Fexample%2Ffunctions%2Fstdlib%2Fsystem.c;fp=platform%2Fexample%2Ffunctions%2Fstdlib%2Fsystem.c;h=2cf7534b2faf99671408ab044ac56dcb399fe630;hb=a18343e497615802f47e0f6876b5bed73af674e0;hp=eb8db3dbd9022f6b80f39881289ed95e3c820d1f;hpb=b76c255d42904c10ce65f884429b4bf2f9b4f4a4;p=pdclib diff --git a/platform/example/functions/stdlib/system.c b/platform/example/functions/stdlib/system.c index eb8db3d..2cf7534 100644 --- a/platform/example/functions/stdlib/system.c +++ b/platform/example/functions/stdlib/system.c @@ -8,49 +8,19 @@ #include -/* This is an example implementation of system() fit for use with POSIX kernels. +/* This is a stub implementation of getenv */ -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 * const argv[] = { "sh", "-c", (char const * const)string, NULL }; - if ( string != NULL ) - { - int pid = fork(); - if ( pid == 0 ) - { - execve( "/bin/sh", (char * * const)argv, NULL ); - } - else if ( pid > 0 ) - { - while( wait( NULL ) != pid ); - } - } return -1; } #ifdef TEST #include <_PDCLIB_test.h> -#define SHELLCOMMAND "echo 'SUCCESS testing system()'" - int main( void ) { - 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; }