mknod man page on HP-UX

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mknod(2)							      mknod(2)

       mknod() - make a directory, special, or ordinary file

       The system call creates a new file named by the path name pointed to by
       path.  The mode of the new file is specified by the mode argument.

       Symbolic constants that define the file type and file access permission
       bits  are  found	 in the header file and are used to construct the mode
       argument.  The value of the mode argument should be the bit-wise inclu‐
       sive  OR	 of  the  values  of the desired file type, miscellaneous mode
       bits, and access permissions.  See stat(5) for  a  description  of  the
       components of the file mode.

       The  owner  ID  of  the	file  is  set  to the effective-user-ID of the
       process.	 If the set-group-ID bit of the parent directory is  set,  the
       new  file's  group  ID  is set to the group ID of the parent directory.
       Otherwise, the new file's group ID is set to the effective-group-ID  of
       the process.

       The  file  access permission bits of mode are modified by the process's
       file mode creation mask: for each bit set in the	 process's  file  mode
       creation mask, the corresponding bit in the file's mode is cleared (see

       In HFS file systems, the new file is created with  three	 base  access-
       control-list (ACL) entries, corresponding to the file access permission
       bits (see acl(5)).  On JFS file systems	that  support  access  control
       lists,  when creating a directory or regular file, optional ACL entries
       are created corresponding to the parent directory's default ACL entries
       (see  aclv(5)).	 When  creating	 a directory, the parent's default ACL
       entries are also copied as the new directory's default ACL entries.

       The dev argument is meaningful only if mode indicates a block or	 char‐
       acter special file, and is ignored otherwise.  It is an implementation-
       and configuration-dependent specification of a character or  block  I/O
       device.	 The value of dev is created by using the macro defined in The
       macro takes as arguments	 the  major  and  minor	 device	 numbers,  and
       returns	a  device identification number which is of type The value and
       interpretation of the major and minor device  numbers  are  implementa‐
       tion-dependent.	 For  more  information,  see  mknod(5) and the System
       Administration manuals for your system.

       Only users having appropriate privileges	 can  invoke  for  file	 types
       other than FIFO files.

       returns the following values:

	      Successful completion.
		     The  new  file  is	 not  created.	is set to indicate the

       If fails, is set to one of the following values.

	      The directory in which
			     path would be created  denies  write  permission,
			     mode  is  for a FIFO file and the caller does not
			     have appropriate privileges.

	      A component of the path prefix denies search permission.

	      The user's or group's disk quota block or inode limit
			     has been reached for this file system.

	      The named path already exists.

	      The	     path argument points outside the process's	 allo‐
			     cated  address  space.  The reliable detection of
			     this error is implementation dependent.

	      Too many symbolic links were encountered in translating the path

	      The length of the specified path name exceeds
			     bytes,  or	 the length of a component of the path
			     name exceeds bytes while is in effect.

	      The	     path argument is null.

	      A component of the path prefix does not exist.

	      Not enough space on the file system.

	      A component of the path prefix is not a directory.

	      The effective-user-ID of the process does not match  that	 of  a
	      user who has
			     appropriate  privileges, and the file type is not
			     FIFO special.

	      The directory in which the file is to be created
			     is located on a read-only file system.

       was developed by AT&T and HP.

       mknod(1M), acl(2), chmod(2), exec(2),  mkdir(2),	 setacl(2),  umask(2),
       acl(5), aclv(5), mknod(5), stat(5), types(5).


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