ACL_CHECK(3SEC) File Access Control Library Functions ACL_CHECK(3SEC)

acl_check - check the validity of an ACL

cc [ flag... ] file... -lsec [ library... ]
#include <sys/acl.h>
int acl_check(acl_t *aclp, int isdir);

The acl_check() function checks the validity of an ACL pointed to by aclp. The isdir argument checks the validity of an ACL that will be applied to a directory. The ACL can be either a POSIX draft ACL as supported by UFS or NFSv4 ACL as supported by ZFS or NFSV4.

When the function verifies a POSIX draft ACL, the rules followed are described in aclcheck(3SEC). For NFSv4 ACL, the ACL is verified against the following rules:

o
The inheritance flags are valid.
o
The ACL must have at least one ACL entry and no more than {MAX_ACL_ENTRIES}.
o
The permission field contains only supported permissions.
o
The entry type is valid.
o
The flag fields contain only valid flags as supported by NFSv4/ZFS.

If any of the above rules are violated, the function fails with errno set to EINVAL.

If the ACL is valid, acl_check() returns 0. Otherwise errno is set to EINVAL and the return value is set to one of the following:

EACL_INHERIT_ERROR

There are invalid inheritance flags specified.

EACL_FLAGS_ERROR

There are invalid flags specified on the ACL that don't map to supported flags in NFSV4/ZFS ACL model.

EACL_ENTRY_ERROR

The ACL contains an unknown value in the type field.

EACL_MEM_ERROR

The system cannot allocate any memory.

EACL_INHERIT_NOTDIR

Inheritance flags are only allowed for ACLs on directories.

See attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPE ATTRIBUTE VALUE
Interface Stability Committed
MT-Level MT-Safe

acl(2), aclcheck(3SEC), aclsort(3SEC), acl(5), attributes(5)

April 22, 2008 OmniOS