NIO CommKit Host Interface Installation and System Administration Manual

3-17
Control Tables (from AT&T 255-110-127)
srvtab
u Opens the raw [URP protocol] data service and invokes the program with
the stdin, stdout, and stderr files attached to the /dev/dk/?.??? device for
the raw channel.
v Environment variables should be read from the incoming data channel be-
fore execution of the program. This flag should be specified only for re-
mote execution channels.
x Opens the remote execution protocol data service and invokes the mapped
program with the stdin, stdout, and stderr files attached to the /dev/dkx/
?.??? device for the remote execution channel.
I Creates an INIT_PROCESS type utmp entry for the invoked program. This
style of accounting makes an entry in the system utmpx file that is transpar-
ent when using the default options of the who command. It also makes an
entry in the system wtmpx file that may be displayed using the command
last(1C).
L Creates a LOGIN_PROCESS type utmp entry for the invoked program.
This style of accounting makes an initial entry in the system utmpx file that
is transparent when using the default options of the who command. This
style of accounting assumes that the invoked program (e.g., login.dk) will
overwrite this entry in the system utmpx file with valid user information.
This style of acconting does not make an entry in the system wtmpx file; it
assumes that the invoked program will make the initial entry, thus avoiding
multiple entries.
R Rejects the call unless the resulting mapped user ID has an “ordinary” shell.
An ordinary shell is defined as either a null shell field in the password file
(the default /bin/sh), or a shell field that references a program that ends in
the string “sh” and the basename of that program does not begin with the
letter r (restricted shells like /bin/rsh).
T Traps the call, rejecting it with a NAK code obtained from the first argu-
ment of the program arguments field. The remainder of the program argu-
ment field will be processed for “special code” expansion and will then be
logged to the server log file.
U Creates a USER_PROCESS type utmp entry for the invoked program. This
style of accounting makes an entry in the system utmpx file that is displayed
when using the default options of the who command. It also makes an entry
in the system wtmpx file that may be displayed using the command
last(1C).
Flag Description