#include <stddef.h>
+#ifdef __cplusplus
+extern "C" {
+#endif
+
//! \brief flags for open(2)
#define O_WRONLY 0x01
#define O_RDONLY 0x02
#define S_IXOTH 00001
extern int chmod(const char *path, mode_t mode);
+extern int unlink(const char *pathname);
+
+#define F_OK 00
+#define R_OK 04
+#define W_OK 02
+#define X_OK 01
+extern int access(const char *pathname, int mode);
+
extern pid_t setsid(void);
extern uid_t getuid(void);
extern unsigned int sleep(unsigned int seconds);
extern int usleep(useconds_t usec);
+extern unsigned int alarm(unsigned int seconds);
// - crypt.c
extern char *crypt(const char *key, const char *salt);
+// - pty.c
+extern int isatty(int fd);
+extern char *ttyname(int fd);
+extern int ttyname_r(int fd, char *buf, size_t buflen);
// signal.h / sys/types.h
extern int kill(pid_t pid, int sig);
#define PASS_MAX 63
extern char *getpass(const char *prompt);
+#if __cplusplus
+}
+#endif
+
#endif