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acl_get_perm(3)

Linux ACL
March 23, 2002

acl

Access control list utilities, libraries and headers

libacl1-dev

access control list - static libraries and headers

libacl-devel

Files needed for building programs with libacl

NAME

acl_get_perm - test for a permission in an ACL permission set

LIBRARY

Linux Access Control Lists library (libacl, -lacl).

SYNOPSIS


.In sys/types.h
.In acl/libacl.h int acl_get_perm acl_permset_t permset_d acl_perm_t perm

DESCRIPTION

The acl_get_perm function tests if the permission specified by the argument perm (one of ACL_READ, ACL_WRITE, ACL_EXECUTE) is contained in the ACL permission set pointed to by the argument permset_d.
Any existing descriptors that refer to permset_d continue to refer to that permission set.

RETURN VALUE

If successful, the acl_get_perm function returns 1 if the permission specified by perm is contained in the ACL permission set permset_d, and 0 if the permission is not contained in the permission set. 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_get_perm function returns -1 and sets errno to the corresponding value:
[EINVAL]
The argument permset_d is not a valid descriptor for a permission set within an ACL entry.
The argument perm is not a valid acl_perm_t value.

STANDARDS

This is a non-portable, Linux specific extension to the ACL manipulation functions defined in IEEE Std 1003.1e draft 17 (\(lqPOSIX.1e\(rq, abandoned).

AUTHOR

Written by
.An Andreas Gruenbacher Aq .
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