how does getpwnam () work in linux?
recently I was studying linux programming and encountered a function getpwnam (). This function definition is defined in pwd.h as:
extern struct passwd *getpwnam (const char *__name);
then I started to find out where the function was implemented. I downloaded a GNU lib, and didn"t find the getpwnam, but found a file called getpwnam.c
.-sharpinclude <pwd.h>
-sharpdefine LOOKUP_TYPE struct passwd
-sharpdefine FUNCTION_NAME getpwnam
-sharpdefine DATABASE_NAME passwd
-sharpdefine ADD_PARAMS const char *name
-sharpdefine ADD_VARIABLES name
-sharpdefine BUFLEN NSS_BUFLEN_PASSWD
-sharpinclude "../nss/getXXbyYY.c"
but no other implementation getpwnam, was found. Excuse me, where is this getpwnam implemented?