table of contents
ACL_ADD_PERM(3) | Library Functions Manual | ACL_ADD_PERM(3) |
NAME¶
acl_add_perm
— add
a permission to an ACL permission set
LIBRARY¶
Linux Access Control Lists library (libacl, -lacl).
SYNOPSIS¶
#include
<sys/types.h>
#include <sys/acl.h>
int
acl_add_perm
(acl_permset_t
permset_d, acl_perm_t
perm);
DESCRIPTION¶
The
acl_add_perm
()
function adds the permission contained in the argument
perm (one of ACL_READ, ACL_WRITE, ACL_EXECUTE) to the
permission set referred to by the argument permset_d.
An attempt to add a permission that is already contained in the permission
set is not considered an error.
Any existing descriptors that refer to permset_d continue to refer to that permission set.
RETURN VALUE¶
The acl_add_perm
() function returns the
value 0 if successful; 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_add_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 does not contain a valid acl_perm_t value.
STANDARDS¶
IEEE Std 1003.1e draft 17 (“POSIX.1e”, abandoned)
SEE ALSO¶
acl_clear_perms(3), acl_delete_perm(3), acl_get_perm(3), acl_get_permset(3), acl_set_permset(3), acl(5)
AUTHOR¶
Derived from the FreeBSD manual pages written by
Robert N M Watson ⟨rwatson@FreeBSD.org⟩,
and adapted for Linux by
Andreas Gruenbacher
⟨andreas.gruenbacher@gmail.com⟩.
March 23, 2002 | Linux ACL |