NAME¶
acl_valid
—
validate an ACL
LIBRARY¶
Linux Access Control Lists library (libacl, -lacl).
SYNOPSIS¶
#include
<sys/types.h>
#include
<sys/acl.h>
int
acl_valid
(
acl_t
acl);
DESCRIPTION¶
The
acl_valid
() function checks the ACL
referred to by the argument
acl for validity.
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 ACL_GROUP.
RETURN VALUE¶
The
acl_valid
() function returns the
value 0 if successful; otherwise the value -1 is returned and
the global variable
errno is set to indicate
the error.
ERRORS¶
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.
STANDARDS¶
IEEE Std 1003.1e draft 17 (“POSIX.1e”, abandoned)
SEE ALSO¶
acl_check(3),
acl_set_file(3),
acl(5)
AUTHOR¶
Derived from the FreeBSD manual pages written by
Robert N M Watson
⟨rwatson@FreeBSD.org⟩, and adapted for Linux by
Andreas Gruenbacher
⟨a.gruenbacher@bestbits.at⟩.