PDCLIB-16: Add _unlocked variations of all I/O routines; move work into these versions

[pdclib] / functions / stdio / fsetpos.c

diff --git a/functions/stdio/fsetpos.c b/functions/stdio/fsetpos.c
index 76c5ede87ec7dea39ef49b194581bfd7a130c878..aa2f8e655bb4a05706cb61f6bf03abf04215b335 100644 (file)
--- a/functions/stdio/fsetpos.c
+++ b/functions/stdio/fsetpos.c
@@ -9,17 +9,36 @@
 #include <stdio.h>
 
 #ifndef REGTEST
+#include <_PDCLIB_glue.h>
 
-int fsetpos( struct _PDCLIB_file_t * stream, const _PDCLIB_fpos_t * pos )
+int fsetpos_unlocked( struct _PDCLIB_file_t * stream, 
+                      const struct _PDCLIB_fpos_t * pos )
 {
-    if ( stream->status & _PDCLIB_WROTELAST )
+    if ( stream->status & _PDCLIB_FWRITE )
     {
-        fflush( stream );
+        if ( _PDCLIB_flushbuffer( stream ) == EOF )
+        {
+            return EOF;
+        }
     }
-    /* TODO: Implement. */
+    if ( _PDCLIB_seek( stream, pos->offset, SEEK_SET ) == EOF )
+    {
+        return EOF;
+    }
+    stream->pos.status = pos->status;
+    /* TODO: Add mbstate. */
     return 0;
 }
 
+int fsetpos( struct _PDCLIB_file_t * stream, 
+             const struct _PDCLIB_fpos_t * pos )
+{
+    flockfile( stream );
+    int res = fsetpos_unlocked( stream, pos );
+    funlockfile( stream );
+    return res;
+}
+
 #endif
 
 #ifdef TEST
@@ -27,7 +46,7 @@ int fsetpos( struct _PDCLIB_file_t * stream, const _PDCLIB_fpos_t * pos )
 
 int main( void )
 {
-    TESTCASE( NO_TESTDRIVER );
+    /* fsetpos() tested together with fsetpos(). */
     return TEST_RESULTS;
 }