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Man Sections:Commands (1)System Calls (2)Library Functions (3)Device Drivers (4)File Formats (5)Miscellaneous (7)System Utilities (8)
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  __syscall(2)
  _exit(2)
  accept(2)
  access(2)
  acct(2)
  adjtime(2)
  aio_cancel(2)
  aio_error(2)
  aio_read(2)
  aio_return(2)
  aio_suspend(2)
  aio_waitcomplete(2)
  aio_write(2)
  bind(2)
  brk(2)
  chdir(2)
  chflags(2)
  chmod(2)
  chown(2)
  chroot(2)
  clock_getres(2)
  clock_gettime(2)
  clock_settime(2)
  close(2)
  connect(2)
  creat(2)
  dup(2)
  dup2(2)
  eaccess(2)
  errno(2)
  execve(2)
  extattr(2)
  extattr_delete_fd(2)
  extattr_delete_file(2)
  extattr_get_fd(2)
  extattr_get_file(2)
  extattr_set_fd(2)
  extattr_set_file(2)
  fchdir(2)
  fchflags(2)
  fchmod(2)
  fchown(2)
  fcntl(2)
  fhopen(2)
  fhstat(2)
  fhstatfs(2)
  flock(2)
  fork(2)
  fpathconf(2)
  fstat(2)
  fstatfs(2)
  fsync(2)
  ftruncate(2)
  futimes(2)
  getdents(2)
  getdirentries(2)
  getdtablesize(2)
  getegid(2)
  geteuid(2)
  getfh(2)
  getfsstat(2)
  getgid(2)
  getgroups(2)
  getitimer(2)
  getlogin(2)
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  getpgid(2)
  getpgrp(2)
  getpid(2)
  getppid(2)
  getpriority(2)
  getresgid(2)
  getresuid(2)
  getrlimit(2)
  getrusage(2)
  getsid(2)
  getsockname(2)
  getsockopt(2)
  gettimeofday(2)
  getuid(2)
  i386_get_ioperm(2)
  i386_get_ldt(2)
  i386_set_ioperm(2)
  i386_set_ldt(2)
  i386_vm86(2)
  intro(2)
  ioctl(2)
  issetugid(2)
  jail(2)
  jail_attach(2)
  kenv(2)
  kevent(2)
  kill(2)
  killpg(2)
  kldfind(2)
  kldfirstmod(2)
  kldload(2)
  kldnext(2)
  kldstat(2)
  kldsym(2)
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  kqueue(2)
  kse(2)
  kse_create(2)
  kse_exit(2)
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  ktrace(2)
  lchflags(2)
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  lgetfh(2)
  link(2)
  lio_listio(2)
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  lstat(2)
  lutimes(2)
  madvise(2)
  mincore(2)
  minherit(2)
  mkdir(2)
  mkfifo(2)
  mknod(2)
  mlock(2)
  mlockall(2)
  mmap(2)
  modfind(2)
  modfnext(2)
  modnext(2)
  modstat(2)
  mount(2)
  mprotect(2)
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  munlock(2)
  munlockall(2)
  munmap(2)
  nanosleep(2)
  nfssvc(2)
  nmount(2)
  ntp_adjtime(2)
  ntp_gettime(2)
  open(2)
  pathconf(2)
  pipe(2)
  poll(2)
  posix_madvise(2)
  pread(2)
  profil(2)
  ptrace(2)
  pwrite(2)
  quotactl(2)
  read(2)
  readlink(2)
  readv(2)
  reboot(2)
  recv(2)
  recvfrom(2)
  recvmsg(2)
  rename(2)
  revoke(2)
  rfork(2)
  rmdir(2)
  rtprio(2)
  sbrk(2)
  sched_get_priority_max(2)
  sched_get_priority_min(2)
  sched_getparam(2)
  sched_getscheduler(2)
  sched_rr_get_interval(2)
  sched_setparam(2)
  sched_setscheduler(2)
  sched_yield(2)
  select(2)
  semctl(2)
  semget(2)
  semop(2)
  send(2)
  sendfile(2)
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  sendto(2)
  setegid(2)
  seteuid(2)
  setgid(2)
  setgroups(2)
  setitimer(2)
  setlogin(2)
  setpgid(2)
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  setpriority(2)
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  setreuid(2)
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  setsid(2)
  setsockopt(2)
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  setuid(2)
  shmat(2)
  shmctl(2)
  shmdt(2)
  shmget(2)
  shutdown(2)
  sigaction(2)
  sigaltstack(2)
  sigblock(2)
  sigmask(2)
  sigpause(2)
  sigpending(2)
  sigprocmask(2)
  sigreturn(2)
  sigsetmask(2)
  sigstack(2)
  sigsuspend(2)
  sigvec(2)
  sigwait(2)
  socket(2)
  socketpair(2)
  stat(2)
  statfs(2)
  swapoff(2)
  swapon(2)
  symlink(2)
  sync(2)
  sysarch(2)
  syscall(2)
  truncate(2)
  umask(2)
  undelete(2)
  unlink(2)
  unmount(2)
  utimes(2)
  utrace(2)
  uuidgen(2)
  vfork(2)
  wait(2)
  wait3(2)
  wait4(2)
  waitpid(2)
  write(2)
  writev(2)

readlink(2)

NAME

     readlink -- read value of a symbolic link


LIBRARY

     Standard C Library (libc, -lc)


SYNOPSIS

     #include <unistd.h>

     int
     readlink(const char *path, char *buf, int bufsiz);


DESCRIPTION

     The readlink() system call places the contents of the symbolic link path
     in the buffer buf, which has size bufsiz.	The readlink() system call
     does not append a NUL character to buf.


RETURN VALUES

     The call returns the count of characters placed in the buffer if it suc-
     ceeds, or a -1 if an error occurs, placing the error code in the global
     variable errno.


ERRORS

     The readlink() system call will fail if:

     [ENOTDIR]		A component of the path prefix is not a directory.

     [ENAMETOOLONG]	A component of a pathname exceeded 255 characters, or
			an entire path name exceeded 1023 characters.

     [ENOENT]		The named file does not exist.

     [EACCES]		Search permission is denied for a component of the
			path prefix.

     [ELOOP]		Too many symbolic links were encountered in translat-
			ing the pathname.

     [EINVAL]		The named file is not a symbolic link.

     [EIO]		An I/O error occurred while reading from the file sys-
			tem.

     [EFAULT]		The buf argument extends outside the process's allo-
			cated address space.


SEE ALSO

     lstat(2), stat(2), symlink(2), symlink(7)


HISTORY

     The readlink() system call appeared in 4.2BSD.

FreeBSD 5.4			 June 4, 1993			   FreeBSD 5.4

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