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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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Index:
  __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)
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  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)
  kldunload(2)
  kqueue(2)
  kse(2)
  kse_create(2)
  kse_exit(2)
  kse_release(2)
  kse_switchin(2)
  kse_thr_interrupt(2)
  kse_wakeup(2)
  ktrace(2)
  lchflags(2)
  lchmod(2)
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  lgetfh(2)
  link(2)
  lio_listio(2)
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  lseek(2)
  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)
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  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)
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  rfork(2)
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  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)
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  send(2)
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  setegid(2)
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  setgid(2)
  setgroups(2)
  setitimer(2)
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  setsid(2)
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  setuid(2)
  shmat(2)
  shmctl(2)
  shmdt(2)
  shmget(2)
  shutdown(2)
  sigaction(2)
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  sigpending(2)
  sigprocmask(2)
  sigreturn(2)
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  sigvec(2)
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  socket(2)
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  stat(2)
  statfs(2)
  swapoff(2)
  swapon(2)
  symlink(2)
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  sysarch(2)
  syscall(2)
  truncate(2)
  umask(2)
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  unmount(2)
  utimes(2)
  utrace(2)
  uuidgen(2)
  vfork(2)
  wait(2)
  wait3(2)
  wait4(2)
  waitpid(2)
  write(2)
  writev(2)

mkfifo(2)

NAME

     mkfifo -- make a fifo file


LIBRARY

     Standard C Library (libc, -lc)


SYNOPSIS

     #include <sys/types.h>
     #include <sys/stat.h>

     int
     mkfifo(const char *path, mode_t mode);


DESCRIPTION

     The mkfifo() system call creates a new fifo file with name path.  The
     access permissions are specified by mode and restricted by the umask(2)
     of the calling process.

     The fifo's owner ID is set to the process's effective user ID.  The
     fifo's group ID is set to that of the parent directory in which it is
     created.


RETURN VALUES

     The mkfifo() function returns the value 0 if successful; otherwise the
     value -1 is returned and the global variable errno is set to indicate the
     error.


ERRORS

     The mkfifo() system call will fail and no fifo will be created if:

     [ENOTSUP]		The kernel has not been configured to support fifo's.

     [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]		A component of the path prefix 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.

     [EROFS]		The named file resides on a read-only file system.

     [EEXIST]		The named file exists.

     [ENOSPC]		The directory in which the entry for the new fifo is
			being placed cannot be extended because there is no
			space left on the file system containing the direc-
			tory.

     [ENOSPC]		There are no free inodes on the file system on which
			the fifo is being created.

     [EIO]		An I/O error occurred while making the directory entry
			or allocating the inode.

     [EIO]		An I/O error occurred while reading from or writing to
			the file system.

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


SEE ALSO

     chmod(2), mknod(2), stat(2), umask(2)


STANDARDS

     The mkfifo() system call is expected to conform to ISO/IEC 9945-1:1990
     (``POSIX.1'').

FreeBSD 5.4			 June 4, 1993			   FreeBSD 5.4

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