acl_dup (3) Linux Manual Page

acl_dup – duplicate an ACL

Library

Linux Access Control Lists library (libacl, -lacl).

Synopsis

In sys/types.h In sys/acl.h Ft acl_t Fn acl_dup acl_t acl

Description

The Fn acl_dup function returns a pointer to a copy of the ACL pointed to by acl

This function may cause memory to be allocated. The caller should free any releasable memory, when the new ACL is no longer required, by calling acl_free3 with the (void*)acl_t returned by Fn acl_dup as an argument.

Return Value

On success, this function returns a pointer to the working storage. On error, a value of (acl_t)NULL is returned, and errno is set appropriately.

Errors

If any of the following conditions occur, the Fn acl_dup function returns a value of (acl_t)NULL and sets errno to the corresponding value:

Bq Er EINVAL

The argument acl is not a valid pointer to an ACL.

Bq Er ENOMEM

The acl_t to be returned requires more memory than is allowed by the hardware or system-imposed memory management constraints.

Standards

IEEE Std 1003.1e draft 17 (“POSIX.1e”, abandoned)

See Also

acl_free3, acl_get_entry3, acl(5)

Author

Derived from the FreeBSD manual pages written by An Robert N M Watson Aq rwatson [at] FreeBSD.org , and adapted for Linux by An Andreas Gruenbacher Aq a.gruenbacher [at] bestbits.at .