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 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
⟨a.gruenbacher@bestbits.at⟩.