1 files changed, 40 insertions, 0 deletions
diff --git a/src/seek.c b/src/seek.c
new file mode 100644
index 0000000..a7b0cac
--- /dev/null
+++ b/src/seek.c
@@ -0,0 +1,40 @@
+#include <sys/types.h>
+#include "seek.h"
+
+/**
+  * @file seek.c
+  * @author djb
+  * @ref qmail
+  * @brief seek in an open file descritor
+ */
+
+off_t lseek(int fd,off_t offset,int whence);
+int ftruncate(int fd, off_t length);
+
+#define CUR 1 /* sigh */
+
+seek_pos seek_cur(int fd)
+{ 
+  return lseek(fd,(off_t) 0,CUR); 
+}
+
+#define END 2 /* sigh */
+
+int seek_end(int fd)
+{ 
+  if (lseek(fd,(off_t) 0,END) == -1) return -1; 
+  return 0; 
+}
+
+#define SET 0 /* sigh */
+
+int seek_set(int fd,seek_pos pos)
+{ 
+  if (lseek(fd,(off_t) pos,SET) == -1) return -1; 
+  return 0; 
+}
+
+int seek_trunc(int fd,seek_pos pos)
+{ 
+  return ftruncate(fd,(off_t) pos); 
+}