acl_get_perm (3) - Linux Manuals

acl_get_perm: test for a permission in an ACL permission set

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 Ft int Fn acl_get_perm acl_permset_t permset_d acl_perm_t perm

DESCRIPTION

The Fn acl_get_perm function tests if the permission specified by the argument perm 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 Fn 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 Fn acl_get_perm function returns -1 and sets errno to the corresponding value:

Bq Er 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 ("POSIX.1e", abandoned).

AUTHOR

Written by An Andreas Gruenbacher Aq a.gruenbacher [at] bestbits.at .