X-Git-Url: https://pd.if.org/git/?a=blobdiff_plain;f=platform%2Fexample%2Ffunctions%2Fstdio%2Ftmpfile.c;h=94351caad147da0ce6bf2c498906f5dd9eeb5fb2;hb=af55dc64b9118345203e7ba7bd262e6444573795;hp=4c55e5d3542a4c4db4f16f14fcd7d8425b6050ec;hpb=406e7c85a903d02f8a95f5b6dded5f2267e664ca;p=pdclib.old

diff --git a/platform/example/functions/stdio/tmpfile.c b/platform/example/functions/stdio/tmpfile.c
index 4c55e5d..94351ca 100644
--- a/platform/example/functions/stdio/tmpfile.c
+++ b/platform/example/functions/stdio/tmpfile.c
@@ -10,89 +10,25 @@
 
 #ifndef REGTEST
 
-#include <inttypes.h>
-#include <stdlib.h>
-#include <string.h>
-
+#include <errno.h>
 #include <_PDCLIB_glue.h>
 
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <unistd.h>
-
-extern struct _PDCLIB_file_t * _PDCLIB_filelist;
-
-/* This is an example implementation of tmpfile() fit for use with POSIX
-   POSIX kernels.
+/* This is a stub implementation of tmpfile
 */
-struct _PDCLIB_file_t * tmpfile( void )
+FILE* tmpfile( void )
 {
-    FILE * rc;
-    /* This is the chosen way to get high-quality randomness. Replace as
-       appropriate.
-    */
-    FILE * randomsource = fopen( "/dev/urandom", "rb" );
-    char filename[ L_tmpnam ];
-    _PDCLIB_fd_t fd;
-    if ( randomsource == NULL )
-    {
-        return NULL;
-    }
-    for ( ;; )
-    {
-        /* Get a filename candidate. What constitutes a valid filename and
-           where temporary files are usually located is platform-dependent,
-           which is one reason why this function is located in the platform
-           overlay. The other reason is that a *good* implementation should
-           use high-quality randomness instead of a pseudo-random sequence to
-           generate the filename candidate, which is *also* platform-dependent.
-        */
-        uint32_t random;
-        fscanf( randomsource, "%" SCNu32, &random ); 
-        sprintf( filename, "/tmp/%010" PRNu32 ".tmp", random );
-        /* Check if file of this name exists. Note that fopen() is a very weak
-           check, which does not take e.g. access permissions into account
-           (file might exist but not readable). Replace with something more
-           appropriate.
-        */
-        fd = open( filename, O_CREAT | O_EXCL | O_RDWR, S_IRUSR | S_IWUSR );
-        if ( fd != -1 )
-        {
-            break;
-        }
-        close( fd );
-    }
-    fclose( randomsource );
-    /* See fopen(). */
-    if ( ( rc = calloc( 1, sizeof( struct _PDCLIB_file_t ) + _PDCLIB_UNGETCBUFSIZE + L_tmpnam + BUFSIZ ) ) == NULL )
-    {
-        /* No memory to set up FILE structure */
-        close( fd );
-        return NULL;
-    }
-    rc->status = _PDCLIB_filemode( "wb+" ) | _PDCLIB_LIBBUFFER | _IOLBF | _PDCLIB_DELONCLOSE;
-    rc->handle = fd;
-    rc->ungetbuf = (unsigned char *)rc + sizeof( struct _PDCLIB_file_t );
-    rc->filename = (char *)rc->ungetbuf + _PDCLIB_UNGETCBUFSIZE;
-    rc->buffer   = rc->filename + L_tmpnam;
-    strcpy( rc->filename, filename );
-    rc->bufsize = BUFSIZ;
-    rc->bufidx = 0;
-    rc->ungetidx = 0;
-    rc->next = _PDCLIB_filelist;
-    _PDCLIB_filelist = rc;
-    return rc;
+    errno = ENOTSUP;
+    return NULL;
 }
 
 #endif
 
 #ifdef TEST
 #include <_PDCLIB_test.h>
+#include <string.h>
 
-int main()
+int main( void )
 {
-    TESTCASE( NO_TESTDRIVER );
     return TEST_RESULTS;
 }