Hi everyone,
I'm a student of Computer Science at University of Naples (Italy) - "Federico
II".
For a project, I need to add a new database into nss.
I read the getpwnam() system call source code to search a way to add this new
database.
I have two questions:
1)Is correct the getpwnam() system call following sequence?
a) getpwnam()
b) getpwnam_r()
c0) NSS_XbyY_INIT()
c1) nss_search()
c2) NSS_XbyY()
nss_search() function searches data in the backend as written in the
nsswitch.conf file and it
calls the function for the specific backend (e.g. if ldap is the passwd
database backend,
nss_search() invokes the _nss_ldap_passwd_constr function and, then, the
getbyname() function).
2)To insert a new database into nss, I think the following steps are necessary:
a) add the database definition to the nss_dbdefs.h;
b) create a getMYDATAbynam.c file, that implements the system call
getMYDATAbynam();
c) I need to create getMYDATAbynam().c, that implements backend
functions, foreach backend supported by this new database.
Is it right?
Best regards,
Luca Tamburo
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