1 files changed, 51 insertions, 0 deletions
diff --git a/src/logic/slbt_map_input.c b/src/logic/slbt_map_input.c
new file mode 100644
index 0000000..2da2429
--- /dev/null
+++ b/src/logic/slbt_map_input.c
@@ -0,0 +1,51 @@
+/*******************************************************************/
+/*  slibtool: a skinny libtool implementation, written in C        */
+/*  Copyright (C) 2016  Z. Gilboa                                  */
+/*  Released under the Standard MIT License; see COPYING.SLIBTOOL. */
+/*******************************************************************/
+
+#include <stdint.h>
+#include <stdbool.h>
+#include <unistd.h>
+#include <fcntl.h>
+#include <sys/mman.h>
+#include <sys/types.h>
+#include <sys/stat.h>
+
+#include <slibtool/slibtool.h>
+
+int slbt_map_input(
+	int			fd,
+	const char *		path,
+	int			prot,
+	struct slbt_input *	map)
+{
+	struct stat	st;
+	bool		fnew;
+	int		ret;
+
+	if ((fnew = (fd < 0)))
+		fd  = open(path,O_RDONLY | O_CLOEXEC);
+
+	if (fd < 0)
+		return -1;
+
+	if ((ret = fstat(fd,&st) < 0) && fnew)
+		close(fd);
+
+	if (ret < 0)
+		return -1;
+
+	map->size = st.st_size;
+	map->addr = mmap(0,map->size,prot,MAP_PRIVATE,fd,0);
+
+	if (fnew)
+		close(fd);
+
+	return (map->addr == MAP_FAILED) ? -1 : 0;
+}
+
+int slbt_unmap_input(struct slbt_input * map)
+{
+	return munmap(map->addr,map->size);
+}