Added support for mappings with no associated file.
diff --git a/server/file.c b/server/file.c
index e2d1c37..df7af68 100644
--- a/server/file.c
+++ b/server/file.c
@@ -199,6 +199,45 @@
return &file->obj;
}
+/* Create a temp file for anonymous mappings */
+struct file *create_temp_file( int access )
+{
+ struct file *file;
+ char *name;
+ int fd;
+
+ do
+ {
+ if (!(name = tmpnam(NULL)))
+ {
+ SET_ERROR( ERROR_TOO_MANY_OPEN_FILES );
+ return NULL;
+ }
+ fd = open( name, O_CREAT | O_EXCL | O_RDWR, 0600 );
+ } while ((fd == -1) && (errno == EEXIST));
+ if (fd == -1)
+ {
+ file_set_error();
+ return NULL;
+ }
+ unlink( name );
+
+ if (!(file = mem_alloc( sizeof(*file) )))
+ {
+ close( fd );
+ return NULL;
+ }
+ init_object( &file->obj, &file_ops, NULL );
+ file->name = NULL;
+ file->next = NULL;
+ file->fd = fd;
+ file->access = access;
+ file->flags = 0;
+ file->sharing = 0;
+ CLEAR_ERROR();
+ return file;
+}
+
static void file_dump( struct object *obj, int verbose )
{
struct file *file = (struct file *)obj;
@@ -406,6 +445,27 @@
}
+/* try to grow the file to the specified size */
+int grow_file( struct file *file, int size_high, int size_low )
+{
+ struct stat st;
+
+ if (size_high)
+ {
+ SET_ERROR( ERROR_INVALID_PARAMETER );
+ return 0;
+ }
+ if (fstat( file->fd, &st ) == -1)
+ {
+ file_set_error();
+ return 0;
+ }
+ if (st.st_size >= size_low) return 1; /* already large enough */
+ if (ftruncate( file->fd, size_low ) != -1) return 1;
+ file_set_error();
+ return 0;
+}
+
int set_file_time( int handle, time_t access_time, time_t write_time )
{
struct file *file;
