acl_valid(3)acl_valid(3)NAMEacl_valid - Checks an ACL for validity
SYNOPSIS
#include <sys/acl.h>
int acl_valid(
acl_t acl_d,
acl_entry_t *entry_p );
LIBRARY
Security Library (libpacl.a)
PARAMETERS
Specifies the working storage internal representation of an ACL.
Pointer to the location that holds a returned ACL entry.
DESCRIPTION
NOTE: This function is based on Draft 13 of the POSIX P1003.6 stan‐
dard.
The acl_valid() function checks the ACL for validity. An ACL is
invalid if one or more of the following conditions are violated: The
three required entries (ACL_USER_OBJ, ACL_GROUP_OBJ, and ACL_OTHER_OBJ)
must appear exactly once in an ACL of type ACL_TYPE_ACCESS, and in a
non-empty ACL of type ACL_TYPE_DEFAULT or ACL_TYPE_DEFAULT_DIR. The
ACL must not contain a duplicate entry. An entry is duplicated if
another entry in the same ACL has the same entry tag type and the same
tag qualifier (sameness or difference in permissions is not relevant).
RETURN VALUES
Upon successful completion, the acl_valid() function returns a value of
0 (zero). Otherwise, a value of -1 is returned, and the errno global
variable is set to indicate the error.
ERRORS
For the following condition, the acl_valid() function sets the location
specified by the entry_p parameter with the value of the ACL entry for
which one or more duplicates exist elsewhere in the ACL. The ACL con‐
tains entries that are not unique.
For the following conditions, the acl_valid() function sets the loca‐
tion indicated by the entry_p parameter to the NULL value. The acl_d
parameter does not refer to a valid ACL.
One or more of the required entries is not present.
SEE ALSOacl_create_entry(3), acl_init(3), acl_get_fd(3), acl_get_file(3),
acl_set_fd(3), acl_set_file(3), acl(4)
Security
acl_valid(3)