pam_getenv - returns the value for a PAM environment name
cc [ flag ... ] file ... –lpam [ library ... ] #include <security/pam_appl.h> char *pam_getenv(pam_handle_t *pamh, const char *name);
The pam_getenv() function searches the PAM handle pamh for a value associated with name. If a value is present, pam_getenv() makes a copy of the value and returns a pointer to the copy back to the calling application. If no such entry exists, pam_getenv() returns NULL. It is the responsibility of the calling application to free the memory returned by pam_getenv().
If successful, pam_getenv() returns a copy of the value associated with name in the PAM handle; otherwise, it returns a NULL pointer.
See attributes(5) for descriptions of the following attributes:
The interfaces in libpam are MT-Safe only if each thread within the multithreaded application uses its own PAM handle.