int linkat(int, const char *, int, const char *, int);
int symlink(const char *, const char *);
int symlinkat(const char *, int, const char *);
-int readlink(const char *, char *, size_t);
-int readlinkat(int, const char *, char *, size_t);
+ssize_t readlink(const char *, char *, size_t);
+ssize_t readlinkat(int, const char *, char *, size_t);
int unlink(const char *);
int unlinkat(int, const char *, int);
int rmdir(const char *);
pid_t fork(void);
int execve(const char *, char *const [], char *const []);
int execv(const char *, char *const []);
-int execle(const char *, ...);
-int execl(const char *, ...);
+int execle(const char *, const char *, ...);
+int execl(const char *, const char *, ...);
int execvp(const char *, char *const []);
-int execlp(const char *, ...);
+int execlp(const char *, const char *, ...);
int fexecve(int, char *const [], char *const []);
void _exit(int);
#if defined(_XOPEN_SOURCE) || defined(_GNU_SOURCE)
int lockf(int, int, off_t);
-int setpgrp(void);
+pid_t setpgrp(void);
char *crypt(const char *, const char *);
void encrypt(char *, int);
void swab(const void *, void *, ssize_t);
#ifdef _GNU_SOURCE
int brk(void *);
void *sbrk(intptr_t);
+pid_t forkall(void);
pid_t vfork(void);
int vhangup(void);
int chroot(const char *);
int sethostname(const char *, size_t);
int usleep(unsigned);
unsigned ualarm(unsigned, unsigned);
-int setgroups(int, const gid_t []);
+int setgroups(size_t, const gid_t []);
int setresuid(uid_t, uid_t, uid_t);
int setresgid(gid_t, gid_t, gid_t);
#endif