cpacl man page on HP-UX

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cpacl(3C)							     cpacl(3C)

       cpacl(),	 fcpacl()  -  copy the access control list (ACL) and mode bits
       from one file to another (HFS and JFS File Systems only)

       To ensure continued conformance with emerging industry standards,  fea‐
       tures  described	 in this manual entry are likely to change in a future

       Both (HFS and JFS file systems) and (HFS file systems  only)  copy  the
       access control list and mode bits (that is, file access permission bits
       and miscellaneous mode bits; see chmod(2)) from one  file  to  another,
       and transfer ownership much like chown(2).

       can  only  copy	HFS  ACLs to other HFS files and JFS ACLS to other JFS
       files; it does not covert HFS ACLs to JFS ACLs or vice versa.  and take
       the following parameters:

	      ·	 Path  names  (fromfile	 and  tofile) or open file descriptors
		 (fromfd and tofd).

	      ·	 A mode value (frommode, typically the value returned by − see
		 stat(2))  containing  file  miscellaneous mode bits which are
		 always copied, and file  access  permission  bits  which  are
		 copied	 instead  of the access control list if either file is

	      ·	 User ID and group ID of the file (fromuid, touid and fromgid,
		 togid)	 for  transferring  ownership.	(Typically fromuid and
		 fromgid are the and values returned by and  touid  and	 togid
		 are  the  return  values  from and − see geteuid(2) and gete‐
		 gid(2) in getuid(2)).

       When both files are local, the routines copy the	 access	 control  list
       and  call  (HFS	only; see chownacl(3C)) to transfer ownership from the
       fromfile to the tofile, if necessary.

       handles remote copying (via NFS) and copying from HFS to	 JFS  or  vice
       versa  after  recognizing  failures  of	or (see acl(2) and setacl(2)).
       When copying the mode from fromfile (fromfd) to tofile  (tofd),	copies
       the  entire frommode (that is, the file miscellaneous mode bits and the
       file access permission bits) to tofile (tofd) using Some of the miscel‐
       laneous mode bits can be turned off; see chmod(2).

       can copy an access control list from fromfile (fromfd) to tofile (tofd)
       without transferring ownership, but ensuring error  checking  and  han‐
       dling  of remote files.	This is done by passing fromuid equal to touid
       and fromgid equal to togid (that is, four zeros).   For	remote	files,
       fromuid, touid, fromgid, and togid are ignored.

       If  successful, and return zero.	 If an error occurs, they set to indi‐
       cate the cause of failure and return a negative value, as follows:

       −1     Unable to perform or on a local fromfile (fromfd).

       −2     Unable to perform on tofile (tofd) to set its file miscellaneous
	      mode  bits.  attempts this regardless of whether a file is local
	      or remote, as long as fromfile (fromfd) is local.

       −3     Unable to perform or on a local  tofile  (tofd).	 As  a	conse‐
	      quence,  the file's optional ACL entries are deleted (HFS only),
	      its file access permission bits are zeroed,  and	its  miscella‐
	      neous mode bits might be altered.

       −4     Unable to perform on tofile (tofd) to set its mode.  As a conse‐
	      quence,  if  fromfile  (fromfd)  is  local,  tofile's   (tofd's)
	      optional	ACL entries are deleted (HFS only), its access permis‐
	      sion bits are zeroed, and its file miscellaneous mode bits might
	      be altered, regardless of whether the file is local or remote.

       The  following  code  fragment  gets stat information on and copies its
       file miscellaneous bits and access control list to owned by the caller.
       If either file is remote, only the on is copied.

       and  are	 only  supported on HFS and JFS file systems on standard HP-UX
       operating systems.

       and were developed by HP.

       acl(2),	chown(2),  getacl(2),	getegid(2),   geteuid(2),   getuid(2),
       setacl(2),  stat(2),  acltostr(3C), chownacl(3C), strtoacl(3C), acl(5),
       aclv(5), thread_safety(5).


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