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Recovery Is Possible! 5.1 (Stable branch)
05-02-2008
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cpacl(3C) cpacl(3C) NAME
cpacl(), fcpacl() - copy the access control list (ACL) and mode bits from one file to another (HFS and JFS File Systems only) SYNOPSIS
Remarks To ensure continued conformance with emerging industry standards, features described in this manual entry are likely to change in a future release. DESCRIPTION
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: o Path names (fromfile and tofile) or open file descriptors (fromfd and tofd). o 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 remote. o 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 getegid(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 miscellaneous 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 handling 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. RETURN VALUE
If successful, and return zero. If an error occurs, they set to indicate 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 consequence, the file's optional ACL entries are deleted (HFS only), its file access permission bits are zeroed, and its miscellaneous mode bits might be altered. -4 Unable to perform on tofile (tofd) to set its mode. As a consequence, if fromfile (fromfd) is local, tofile's (tofd's) optional ACL entries are deleted (HFS only), its access permission bits are zeroed, and its file miscellaneous mode bits might be altered, regardless of whether the file is local or remote. EXAMPLES
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. DEPENDENCIES
and are only supported on HFS and JFS file systems on standard HP-UX operating systems. AUTHOR
and were developed by HP. SEE ALSO
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). cpacl(3C)