|ACL_COPY_EXT(3)||Library Functions Manual||ACL_COPY_EXT(3)|
*buf_p, acl_t acl,
acl_copy_ext() function copies the ACL pointed to by acl from system-managed space to the user managed space pointed to by buf_p. The size parameter represents the size in bytes of the buffer pointed to by buf_p. The format of the ACL placed in the buffer pointed to by buf_p is a contiguous, persistent data item, the format of which is unspecified. It is the responsibility of the invoker to allocate an area large enough to hold the copied ACL. The size of the exportable, contiguous, persistent form of the ACL may be obtained by invoking the
Any ACL entry descriptors that refer to an entry in the ACL referenced by acl continue to refer to those entries. Any existing ACL pointers that refer to the ACL referenced by acl continue to refer to the ACL.
(ssize_t)-1is returned and errno is set appropriately.
acl_copy_ext() function returns a value of
(ssize_t)-1and sets errno to the corresponding value:
- The size parameter is zero or negative.
The argument acl is not a valid pointer to an ACL.
The ACL referenced by acl contains one or more improperly formed ACL entries, or for some other reason cannot be translated into the external form of an ACL.
- The size parameter is greater than zero but smaller than the length of the contiguous, persistent form of the ACL.
|March 23, 2002||Linux ACL|