man/man3sec/acl_check.3sec

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 ACL_CHECK 3SEC "Apr 22, 2008"
 NAME
acl_check - check the validity of an ACL
 SYNOPSIS

cc [ flag.\|.\|. ] file.\|.\|. -lsec [ library.\|.\|. ]
#include <sys/acl.h>

int acl_check(acl_t *aclp, int isdir);


 DESCRIPTION

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:


The inheritance flags are valid.


The ACL must have at least one ACL entry and no more than
{MAX_ACL_ENTRIES}.


The permission field contains only supported permissions.


The entry type is valid.


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.
 RETURN VALUES

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.


 ATTRIBUTES

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


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


 SEE ALSO

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