1 files changed, 12 insertions, 0 deletions
diff --git a/lib/libc/include/unistd.h b/lib/libc/include/unistd.h
index 0a8c429..8c82eb8 100644
--- a/lib/libc/include/unistd.h
+++ b/lib/libc/include/unistd.h
@@ -30,15 +30,27 @@
 #ifndef _UNISTD_H
 #define _UNISTD_H
 
+#include <sys/exec.h>
 #include <sys/types.h>
 #include <sys/cdefs.h>
 #include <stddef.h>
 
+#define F_OK 0
+
+/* lseek whence, follows Hyra ABI */
+#define SEEK_SET 0
+#define SEEK_CUR 1
+#define SEEK_END 2
+
 __BEGIN_DECLS
 
+int sysconf(int name);
 ssize_t read(int fd, void *buf, size_t count);
 ssize_t write(int fd, const void *buf, size_t count);
+
 int close(int fd);
+int access(const char *path, int mode);
+off_t lseek(int fildes, off_t offset, int whence);
 
 __END_DECLS