ACL_GET_PERM(3) BSD Library Functions Manual ACL_GET_PERM(3)
NAME
acl_get_perm — test for a permission in an ACL permission set
LIBRARY
Linux Access Control Lists library (libacl, −lacl).
SYNOPSIS
#include <sys/types.h>
#include <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 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 (“POSIX.1e”, abandoned).
SEE ALSO
acl_add_perm(3), acl_clear_perms(3), acl_delete_perm(3), acl_get_permset(3), acl_set_permset(3), acl(5)
AUTHOR
Written by Andreas Gruenbacher ⟨ a.gruenbacher@bestbits.at⟩ .
Linux ACL March 23, 2002 Linux ACL
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