10-22-2005
Quote:
Originally Posted by The Specialist
Do I need to list all the other groups that root is a member of ?
If you use usermod, yes. Comma seperated, no spaces. Do not include primary group membership.
Cheers
ZB
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LEARN ABOUT MOJAVE
mbr_check_service_membership
MBR_CHECK_MEMBERSHIP(3) BSD Library Functions Manual MBR_CHECK_MEMBERSHIP(3)
NAME
mbr_check_membership, mbr_check_service_membership -- check whether a user is a member of a group or service ACL
SYNOPSIS
#include <membership.h>
int
mbr_check_membership(uuid_t user, uuid_t group, int *ismember);
int
mbr_check_service_membership(uuid_t user, const char *service, int *ismember);
DESCRIPTION
mbr_check_membership() tests if a given user is a member of a group (either direct or indirect via a nested group). ismember is set to 1 if
the user is a member or 0 if not a member of the group. mbr_check_service_membership() similarly tests if a given user is a member of a ser-
vice ACL group. Service ACLs are special groups defined with the prefix "com.apple.access_". The service is then prefixed (e.g., "afp"
would check "com.apple.access_afp"). There is a special group that grants accessto all services called "com.apple.access_all_services".
Users may belong to any number of groups. mbr_check_membership() should always be used to check group membership, rather than calling
getgroups(2) or getgrouplist(2). The setgroups(2) and getgroups(2) routines are limited to a fixed number of gids, and so may not include
all of a user's groups.
There are two special cases. If the two uuids are equal, then ismember is set to 1. If the group uuid is equal to the reserved "everyone"
uuid (ABCDEFAB-CDEF-ABCD-EFAB-CDEF0000000C), then ismember will be set to 1 for any valid user.
Group membership information is managed by opendirectoryd(8).
RETURN VALUES
mbr_check_membership() does not test whether group exists or not. Querying membership for a nonexistent group will result in ismember being
set to 0. The function returns 0 on success or one of the following error codes on failure:
[EIO] Communication with opendirectoryd(8) failed.
[ENOENT] user can not be found.
mbr_check_service_membership() is identical to mbr_check_membership() except that ENOENT means no service ACL has been defined.
SEE ALSO
odutil(1), setgroups(2), getgroups(2), mbr_uid_to_uuid(3), opendirectoryd(8)
Mac OS X November 5, 2011 Mac OS X