X-Git-Url: https://pd.if.org/git/?p=pdclib;a=blobdiff_plain;f=platform%2Fexample%2Ffunctions%2Fstdio%2Ftmpfile.c;h=78273422d5c831555a6dd3e8e4c4a4d29bc75337;hp=b778f3f9dabe374c63a54b551b4e2bbf38d61669;hb=da0f3f353d417fed71f358a48d5d5394145e460d;hpb=a7a8d2f1c85c2d7760d4d3479e90466cc3a81b04

diff --git a/platform/example/functions/stdio/tmpfile.c b/platform/example/functions/stdio/tmpfile.c
index b778f3f..7827342 100644
--- a/platform/example/functions/stdio/tmpfile.c
+++ b/platform/example/functions/stdio/tmpfile.c
@@ -1,5 +1,3 @@
-/* $Id$ */
-
 /* tmpfile( void )
 
    This file is part of the Public Domain C Library (PDCLib).
@@ -10,104 +8,25 @@
 
 #ifndef REGTEST
 
-#include <inttypes.h>
-#include <stdlib.h>
-#include <string.h>
-
-#include <_PDCLIB_glue.h>
-
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <fcntl.h>
-#include <unistd.h>
+#include <errno.h>
+#include "_PDCLIB_glue.h"
 
-extern struct _PDCLIB_file_t * _PDCLIB_filelist;
-
-/* This is an example implementation of tmpfile() fit for use with 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( "/proc/sys/kernel/random/uuid", "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.
-        */
-        unsigned int random;
-        fscanf( randomsource, "%u", &random ); 
-        sprintf( filename, "/tmp/%u.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+" ) | _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 "_PDCLIB_test.h"
 #include <string.h>
 
-int main()
+int main( void )
 {
-    FILE * fh;
-#ifndef REGTEST
-    char filename[ L_tmpnam ];
-    FILE * fhtest;
-#endif
-    TESTCASE( ( fh = tmpfile() ) != NULL );
-    TESTCASE( fputc( 'x', fh ) == 'x' );
-    /* Checking that file is actually there */
-    TESTCASE_NOREG( strcpy( filename, fh->filename ) == filename );
-    TESTCASE_NOREG( ( fhtest = fopen( filename, "r" ) ) != NULL );
-    TESTCASE_NOREG( fclose( fhtest ) == 0 );
-    /* Closing tmpfile */
-    TESTCASE( fclose( fh ) == 0 );
-    /* Checking that file was deleted */
-    TESTCASE_NOREG( fopen( filename, "r" ) == NULL );
     return TEST_RESULTS;
 }