From b406087285dda97f2666a7f52f66b14582ed937b Mon Sep 17 00:00:00 2001
From: solar <unknown>
Date: Sat, 19 Jun 2010 18:40:21 +0000
Subject: [PATCH] tmpfile() implementation now based on
 /proc/sys/kernel/random/uuid.

---
 functions/stdio/fclose.c                           |  6 ++++++
 platform/example/functions/stdio/tmpfile.c         | 12 ++++++------
 platform/example/internals/_PDCLIB_config.h        |  4 ++--
 platform/example_64/internals/_PDCLIB_config.h     |  4 ++--
 platform/example_cygwin/internals/_PDCLIB_config.h |  3 ---
 5 files changed, 16 insertions(+), 13 deletions(-)

diff --git a/functions/stdio/fclose.c b/functions/stdio/fclose.c
index dc27fe2..0e822eb 100644
--- a/functions/stdio/fclose.c
+++ b/functions/stdio/fclose.c
@@ -43,8 +43,14 @@ int fclose( struct _PDCLIB_file_t * stream )
             {
                 _PDCLIB_filelist = stream->next;
             }
+            /* Delete tmpfile() */
+            if ( stream->status & _PDCLIB_DELONCLOSE )
+            {
+                remove( stream->filename );
+            }
             /* Free stream */
             free( stream );
+
             return 0;
         }
         previous = current;
diff --git a/platform/example/functions/stdio/tmpfile.c b/platform/example/functions/stdio/tmpfile.c
index 4c55e5d..44b975d 100644
--- a/platform/example/functions/stdio/tmpfile.c
+++ b/platform/example/functions/stdio/tmpfile.c
@@ -24,7 +24,7 @@
 extern struct _PDCLIB_file_t * _PDCLIB_filelist;
 
 /* This is an example implementation of tmpfile() fit for use with POSIX
-   POSIX kernels.
+   kernels.
 */
 struct _PDCLIB_file_t * tmpfile( void )
 {
@@ -32,7 +32,7 @@ struct _PDCLIB_file_t * tmpfile( void )
     /* This is the chosen way to get high-quality randomness. Replace as
        appropriate.
     */
-    FILE * randomsource = fopen( "/dev/urandom", "rb" );
+    FILE * randomsource = fopen( "/proc/sys/kernel/random/uuid", "rb" );
     char filename[ L_tmpnam ];
     _PDCLIB_fd_t fd;
     if ( randomsource == NULL )
@@ -48,9 +48,9 @@ struct _PDCLIB_file_t * tmpfile( void )
            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 );
+        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
@@ -71,7 +71,7 @@ struct _PDCLIB_file_t * tmpfile( void )
         close( fd );
         return NULL;
     }
-    rc->status = _PDCLIB_filemode( "wb+" ) | _PDCLIB_LIBBUFFER | _IOLBF | _PDCLIB_DELONCLOSE;
+    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;
diff --git a/platform/example/internals/_PDCLIB_config.h b/platform/example/internals/_PDCLIB_config.h
index 4251522..89028b5 100644
--- a/platform/example/internals/_PDCLIB_config.h
+++ b/platform/example/internals/_PDCLIB_config.h
@@ -258,8 +258,8 @@ typedef int _PDCLIB_fd_t;
 /* Length of the longest filename the implementation guarantees to support. */
 #define _PDCLIB_FILENAME_MAX 128
 
-/* Buffer size for tmpnam(). */
-#define _PDCLIB_L_tmpnam 100
+/* Maximum length of filenames generated by tmpnam(). (See tmpfile.c.) */
+#define _PDCLIB_L_tmpnam 46
 
 /* Number of distinct file names that can be generated by tmpnam(). */
 #define _PDCLIB_TMP_MAX 50
diff --git a/platform/example_64/internals/_PDCLIB_config.h b/platform/example_64/internals/_PDCLIB_config.h
index 65abc89..30d51b1 100644
--- a/platform/example_64/internals/_PDCLIB_config.h
+++ b/platform/example_64/internals/_PDCLIB_config.h
@@ -251,8 +251,8 @@ typedef int _PDCLIB_fd_t;
 /* Length of the longest filename the implementation guarantees to support. */
 #define _PDCLIB_FILENAME_MAX 128
 
-/* Buffer size for tmpnam(). */
-#define _PDCLIB_L_tmpnam 100
+/* Maximum length of filenames generated by tmpnam(). (See tmpfile.c.) */
+#define _PDCLIB_L_tmpnam 46
 
 /* Number of distinct file names that can be generated by tmpnam(). */
 #define _PDCLIB_TMP_MAX 50
diff --git a/platform/example_cygwin/internals/_PDCLIB_config.h b/platform/example_cygwin/internals/_PDCLIB_config.h
index 78397be..32e0906 100644
--- a/platform/example_cygwin/internals/_PDCLIB_config.h
+++ b/platform/example_cygwin/internals/_PDCLIB_config.h
@@ -258,9 +258,6 @@ typedef int _PDCLIB_fd_t;
 /* Length of the longest filename the implementation guarantees to support. */
 #define _PDCLIB_FILENAME_MAX 128
 
-/* Buffer size for tmpnam(). */
-#define _PDCLIB_L_tmpnam 100
-
 /* Number of distinct file names that can be generated by tmpnam(). */
 #define _PDCLIB_TMP_MAX 50
 
-- 
2.40.0