HP-UX Reference (11i v2 03/08) - 3 Library Functions N-Z (vol 7)

n
nis_groups(3N) nis_groups(3N)
NAME
nis_groups, nis_ismember, nis_addmember, nis_removemember, nis_creategroup, nis_destroygroup,
nis_verifygroup, nis_print_group_entry, nis_map_group, __nis_map_group - NIS+ group manipulation
functions
SYNOPSIS
cc [ flag ... ] file...
-lnsl [ library. . . ]
#include <rpcsvc/nis.h>
bool_t nis_ismember(const nis_name
principal , const nis_name group
);
nis_error nis_addmember(const nis_name
member, const nis_name
group);
nis_error nis_removemember(const nis_name
member
, const nis_name group);
nis_error nis_creategroup(const nis_name
group
, const u_long flags);
nis_error nis_destroygroup(const nis_name
group
);
void nis_print_group_entry(const nis_name
group);
nis_error nis_verifygroup(const nis_name
group
);
DESCRIPTION
These functions manipulate NIS+ groups. They are used by NIS+ clients and servers, and are the inter-
faces to the group authorization object.
The names of NIS+ groups are syntactically similar to names of NIS+ objects but they occupy a separate
namespace. A group named "a.b.c.d." is represented by a NIS+ group object named "a.groups_dir.b.c.d.";
the functions described here all expect the name of the group, not the name of the corresponding group
object.
There are three types of group members:
• An explicit member is just a NIS+ principal-name, for example "wickedwitch.west.oz."
• An implicit ("domain") member, written "*.west.oz.", means that all principals in the given
domain belong to this member. No other forms of wildcarding are allowed: "wickedwitch.*.oz."
is invalid, as is "wickedwitch.west.*.". Note that principals in subdomains of the given domain
are not included.
• A recursive ("group") member, written "@cowards.oz.", refers to another group; all principals
that belong to that group are considered to belong here.
Any member may be made negative by prefixing it with a minus sign (’-’). A group may thus contain
explicit, implicit, recursive, negative explicit, negative implicit, and negative recursive members.
A principal is considered to belong to a group if it belongs to at least one non-negative group member of
the group and belongs to no negative group members.
The
nis_ismember() function returns TRUE if it can establish that principal belongs to group; other-
wise it returns FALSE.
The
nis_addmember() and nis_removemember()
functions add or remove a member. They do not
check whether the member is valid. The user must have read and modify rights for the group in ques-
tion.
The
nis_creategroup() and nis_destroygroup()
functions create and destroy group objects.
The user must have create or destroy rights, respectively, for the groups_dir directory in the appropriate
domain. The parameter flags to
nis_creategroup() is currently unused and should be set to zero.
The
nis_print_group_entry() function lists a group’s members on the standard output.
The
nis_verifygroup() function returns NIS_SUCCESS if the given group exists, otherwise it
returns an error code.
MULTITHREAD USAGE
Thread Safe: Yes
Cancel Safe: Yes
Fork Safe: No
Async-cancel Safe: No
Section 3−−644 Hewlett-Packard Company − 1 − HP-UX 11i Version 2: August 2003