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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)
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  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)
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  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)
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  getlogin(2)
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  getpgid(2)
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  getpid(2)
  getppid(2)
  getpriority(2)
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  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)
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  jail(2)
  jail_attach(2)
  kenv(2)
  kevent(2)
  kill(2)
  killpg(2)
  kldfind(2)
  kldfirstmod(2)
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  kldnext(2)
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  kldunload(2)
  kqueue(2)
  kse(2)
  kse_create(2)
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  kse_switchin(2)
  kse_thr_interrupt(2)
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  ktrace(2)
  lchflags(2)
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  lutimes(2)
  madvise(2)
  mincore(2)
  minherit(2)
  mkdir(2)
  mkfifo(2)
  mknod(2)
  mlock(2)
  mlockall(2)
  mmap(2)
  modfind(2)
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  modnext(2)
  modstat(2)
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  ntp_adjtime(2)
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  open(2)
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  posix_madvise(2)
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  quotactl(2)
  read(2)
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  sched_get_priority_max(2)
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  sched_setparam(2)
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  sigaction(2)
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  sigprocmask(2)
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  socket(2)
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  stat(2)
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  sysarch(2)
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  umask(2)
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  vfork(2)
  wait(2)
  wait3(2)
  wait4(2)
  waitpid(2)
  write(2)
  writev(2)

mknod(2)

NAME

     mknod -- make a special file node


LIBRARY

     Standard C Library (libc, -lc)


SYNOPSIS

     #include <unistd.h>

     int
     mknod(const char *path, mode_t mode, dev_t dev);


DESCRIPTION

     The file system node path is created with the file type and access per-
     missions specified in mode.  The access permissions are modified by the
     process's umask value.

     If mode indicates a block or character special file, dev is a configura-
     tion dependent specification denoting a particular device on the system.
     Otherwise, dev is ignored.

     The mknod() system call requires super-user privileges.


RETURN VALUES

     The mknod() 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 mknod() system call will fail and the file will be not created 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]		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.

     [EPERM]		The process's effective user ID is not super-user.

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

     [ENOSPC]		The directory in which the entry for the new node 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 node is being created.

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

     [EEXIST]		The named file exists.

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

     [EINVAL]		Creating anything else than a block or character spe-
			cial file (or a whiteout) is not supported.


SEE ALSO

     chmod(2), mkfifo(2), stat(2), umask(2)


HISTORY

     The mknod() function appeared in Version 6 AT&T UNIX.

FreeBSD 5.4			 June 4, 1993			   FreeBSD 5.4

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