created skeleton.

1 files changed, 51 insertions, 0 deletions

diff --git a/src/logic/mdso_map_input.c b/src/logic/mdso_map_input.c
new file mode 100644
index 0000000..1e1084a
--- /dev/null
+++ b/src/logic/mdso_map_input.c
@@ -0,0 +1,51 @@
+/****************************************************************/
+/*  mdso: midipix dso scavenger                                 */
+/*  Copyright (C) 2015  Z. Gilboa                               */
+/*  Released under GPLv2 and GPLv3; see COPYING.MDSO.           */
+/****************************************************************/
+
+#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 <mdso/mdso.h>
+
+int mdso_map_input(
+	int			fd,
+	const char *		path,
+	int			prot,
+	struct mdso_input *	map)
+{
+	struct stat	stat;
+	bool		fnew;
+	int		ret;
+
+	if ((fnew = (fd < 0)))
+		fd  = open(path,O_RDONLY | O_CLOEXEC);
+
+	if (fd < 0)
+		return -1;
+
+	if ((ret = fstat(fd,&stat) < 0) && fnew)
+		close(fd);
+
+	if (ret < 0)
+		return -1;
+
+	map->size = stat.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 mdso_unmap_input(struct mdso_input * map)
+{
+	return munmap(map->addr,map->size);
+}