The acl_valid() function checks the ACL referred to by the argument acl
The three required entries ACL_USER_OBJ, ACL_GROUP_OBJ, and ACL_OTHER
must exist exactly once in the ACL. If the ACL contains any ACL_USER or
ACL_GROUP entries, then an ACL_MASK entry is also required. The ACL may
contain at most one ACL_MASK entry.
The user identifiers must be unique among all entries of type ACL_USER.
The group identifiers must be unique among all entries of type
If any of the following conditions occur, the acl_valid() function
returns -1 and sets errno to the corresponding value:
[EINVAL] The argument acl is not a valid pointer to an ACL.
The argument acl does not point to a valid ACL.
One or more of the required ACL entries is not
present in acl.
The ACL contains entries that are not unique.
This page is part of the acl (manipulating access control lists)
project. Information about the project can be found at
http://savannah.nongnu.org/projects/acl. If you have a bug report for
this manual page, see http://savannah.nongnu.org/bugs/?group=acl. This
page was obtained from the project's upstream Git repository
git://git.savannah.nongnu.org/acl.git on 2017-03-13. If you discover
any rendering problems in this HTML version of the page, or you believe
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corrections or improvements to the information in this COLOPHON (which
is not part of the original manual page), send a mail to
Linux ACL March 23, 2002 Linux ACL