Need help with adding a new service to nsswitch.conf

[Pranjal Goswami <mechanic.p@gmail.com>]

Hi Friends ,
I am looking at adding another service in nsswitch.conf which can look for
user presence in a file other than /etc/password. I have copied the files
from nss_files  to a new folder and I  have made the changes in the
Makefile  under nss to get my module to build.. However I get an error when
I try  to build glibc.
/../include/libc-symbols.h:34:32: warning: "MODULE_libnss_secmgr" is not
defined, evaluates to 0 [-Wundef]
   34 | #define IN_MODULE  PASTE_NAME (MODULE_, MODULE_NAME)
      |                                ^~~~~~~
./../include/libc-symbols.h:32:26: note: in definition of macro
'PASTE_NAME1'
   32 | #define PASTE_NAME1(a,b) a##b
      |                          ^
./../include/libc-symbols.h:34:20: note: in expansion of macro 'PASTE_NAME'
   34 | #define IN_MODULE  PASTE_NAME (MODULE_, MODULE_NAME)

secmgr is the module that I am adding. I suspect that the problem is
related to the  line NSS_DECLARE_MODULE_FUNCTIONS (secmgr).
So if we are adding a new service under nss , what additional things we
need to do besides adding a module under nss and having teh same set of
files as in nss/files - renamed to the  new service that that  am using?


Thanks!

Pranjal