+@ line directives in a YP master's /etc/passwd file.

[Eric Ho]

If one can put +@ directives in a YP master's /etc/passwd file (or
whatever file one chooses to build its YP passwd maps), would this creates
a mutually recursive loop or does Sun's C library routines smart enough to
detect and resolve this ?

e.g. 

A YP master called Eng-Sparc is in say the Engineering netgroup and there
is another YP master machine called Fin-Motorola is in say the Finance
netgroup.  Further assume that both machines build their YP passwd maps
from their local /etc/passwd files.

Now, what if Eng-Sparc's /etc/passwd file contains + at Finance and
Fin-Motorola's /etc/passwd file contains + at Engineering.  Would this
creates a loop when one is calling getpwnam() et al ?

Note that this is a simple single cycle (tight) loop, one can creates a
more complicated directed graph that has loops.

I guess that it all depends on what information getpwnam() gets when it
approaches the +@ line/directive.

Any info/pointers appreciated.

+ Eric Ho                          Email: eric at sbi.com