- online man pages   

SunOS man pages : nisopaccess (1)

User Commands                                      nisopaccess(1)


nisopaccess - NIS+ operation access control administration command


nisopaccess [ -v ] directory operation rights nisopaccess [ -v ] [ -r ] directory operation nisopaccess [ -v ] [ -l ] directory [ operation ]


Most NIS+ operations have implied access control through the permissions on the objects that they manipulate. For exam- ple, in order to read an entry in a table, you must have read permission on that entry. However, some NIS+ operations by default perform no access checking at all and are allowed to all: Operation Example of commands that use the operation NIS_CHECKPOINT nisping -C NIS_CPTIME nisping, rpc.nisd NIS_MKDIR nismkdir NIS_PING nisping, rpc.nisd NIS_RMDIR nisrmdir NIS_SERVSTATE nisbackup, nisrestore NIS_STATUS nisstat, rpc.nispasswdd The nisopaccess command can be used to enforce access con- trol on these operations on a per NIS+ directory basis. The directory argument should be the fully qualified name, including the trailing dot, of the NIS+ directory to which nisopaccess will be applied. As a short-hand, if the direc- tory name does not end in a trailing dot, for example "org_dir", then the domain name is appended. The domain name is also appended to partial paths such as SunOS 5.8 Last change: 11 Jun 1999 1 User Commands nisopaccess(1) "". You can use upper or lower case for the operation argument; however, you cannot mix cases. The "NIS_" prefix may be omitted. For example, NIS_PING can be specified as NIS_PING, nis_ping, PING, or ping. The rights argument is specified in the format defined by the nischmod(1) command. Since only the read ("r") rights are used to determine who has the right to perform the operation, the modify and delete rights may be used to con- trol who can change access to the operation. The access checking performed for each operation is as fol- lows. When an operation requires access be checked on all directories served by its rpc.nisd(1M), access is denied if even one of the directories prohibits the operation. NIS_CHECKPOINT Check specified directory, or all directories if there is no directory argument (as is the case when NIS_CHECKPOINT is issued by the "nisping -Ca" command).. Return NIS_PERMISSION when access is denied. NIS_CPTIME Check specified directory. It returns 0 when access is denied. NIS_MKDIR Check parent of specified directory. Returns NIS_PERMISSION when access is denied. If the parent directory is not available locally, that is, it is not served by this rpc.nisd(1M), NIS_MKDIR access is allowed, though the opera- tion will be executed only if this rpc.nisd is a known replica of the directory. You should note that the NIS_MKDIR operation does not create a NIS+ directory; it adds a directory to the serving list for this rpc.nisd, if appropriate. NIS_PING Check specified directory. No return value. NIS_RMDIR Check specified directory. NIS_PERMISSION is returned when access denied. The NIS_RMDIR operation does not remove a NIS+ SunOS 5.8 Last change: 11 Jun 1999 2 User Commands nisopaccess(1) directory; it deletes the directory from the serving list for this rpc.nisd, if appropriate. NIS_SERVSTATE Check access on all directories served by this rpc.nisd. If access is denied for a tag, "<per- mission denied>" is returned instead of the tag value. NIS_STATUS Same as for NIS_SERVSTATE. Note that older clients may not supply authentication infor- mation for some of the operations listed above. These clients are treated as "nobody" when access checking is per- formed.


The following options are supported: -l List the access control for a single operation, or for all operations that have access control enabled. -r Remove access control for a certain operation on the specified directory. -v Verbose mode.


Example 1: Enabling Access Control for the NIS_PING Opera- tion To enable access control for the NIS_PING operation on "org_dir.`domainname`." such that only the owner of the directory can perform a NIS_PING, or change the NIS_PING rights: example% nisopaccess org_dir NIS_PING o=rmcd,g=,w=,n= Example 2: Listing the Access to NIS_PING To list the access to the NIS_PING operation for org_dir: example% nisopaccess -l org_dir NIS_PING NIS_PING ----rmcd-------- owner.dom.ain. group.dom.ain. Example 3: Removing Access Control for NIS_PING SunOS 5.8 Last change: 11 Jun 1999 3 User Commands nisopaccess(1) To remove access control for NIS_PING on org_dir: example% nisopaccess -r org_dir NIS_PING


The following exit values are returned: 0 Successful operation. other Operation failed. The status is usually the return status from a NIS+ command such as nistbladm.


See attributes(5) for descriptions of the following attri- butes: ____________________________________________________________ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | |_____________________________|_____________________________| | Availability | SUNWnisu | |_____________________________|_____________________________|


nis+(1), nischmod(1), nistbladm(1), rpc.nisd(1M), attributes(5)


The access control is implemented by creating a NIS+ table called "proto_op_access" in each NIS+ directory to which access control should be applied. The table can be manipu- lated using normal NIS+ commands. However, nisopaccess is the only supported interface for NIS+ operation access control. SunOS 5.8 Last change: 11 Jun 1999 4