Apple AppleShare 3.0 Users and Groups Programming Interface - Manual (Page 13)

ugUserNotFound 5 The user is not in the users and groups
file.
ugGroupNotFound 6 The group is not in the users and groups
file.
ugNotAUser 7 ugUserID is not the ID of a user.
ugNotAGroup 8 ugGroupID is not the ID of a group.
ugNotaMember 10 User is not a member of the group specified
by ugGroupID.
ugNoMoreUsers 11 There are no more users in the users and
groups file, or there are no more users in
the group.
ugBadParamErr 13 async is TRUE, the length of the user name
is greater than 31, or ugPosOffset is not 0
or 1.
ugEOF 23 End of file.
ugFatalError 99 There is a problem with the users and
groups file. Delete it and re-create it.
UGSetUserInfo
FUNCTION UGSetUserInfo (thePB: UserGroupPBPtr; async: BOOLEAN): OSErr;
pascal OSErr UGSetUserInfo (UserGroupPBPtr thePB, Boolean async);
Parameter Block 18 ugNamePtr long pointer to user name
24 ugRefNum word file reference number
30 ugAccessID long program access ID
34 ugUserID long user ID
48 ugChngFlags word change flag codes
50 ugPassword long pointer to user
password
54 ugUserFlags long user flags
UGSetUserInfo can be used to set ugPassword (a pointer to a Str8), the user's
password, and the user flags specified by ugUserFlags. (Refer to "Data
Structures," later in this document, for details.) The user is specified
either by ugUserID or
by ugNamePtr (a pointer to a Str31). If ugUserID is used, then ugNamePtr
should be a pointer to a zero-length Str31. If ugNamePtr is used, then
ugUserID should be 0. If both fields have values, then ugUserID takes
precedence. ugChngFlags should be set to ChngUserPasswd (1) if the password
is to be changed,to ChngUserFlags (2) if the user's flags are to be changed,
and to ChngUAll (3) if both are to be changed.