Manpages - pam_get_user.3

pam_get_user - get user name

  #include <security/pam_modules.h>

int pam_get_user(const pam_handle_t **/pamh/, const char **/user/, const char */prompt/);*

The pam_get_user function returns the name of the user specified by pam_start*(3). If no user was specified it returns what *pam_get_item (pamh, PAM_USER, … ); would have returned. If this is NULL it obtains the username via the *pam_conv*(3) mechanism, it prompts the user with the first non-NULL string in the following list:

·

The prompt argument passed to the function.

·

What is returned by pam_get_item (pamh, PAM_USER_PROMPT, … );

·

The default prompt: “login: ”

By whatever means the username is obtained, a pointer to it is returned as the contents of *user. Note, this memory should not be free()/d or /modified by the module.

This function sets the PAM_USER item associated with the *pam_set_item*(3) and *pam_get_item*(3) functions.

PAM_SUCCESS

User name was successful retrieved.

PAM_SYSTEM_ERR

A NULL pointer was submitted.

PAM_CONV_ERR

The conversation method supplied by the application failed to obtain the username.

PAM_BUF_ERR

Memory buffer error.

PAM_ABORT

Error resuming an old conversation.

PAM_CONV_AGAIN

The conversation method supplied by the application is waiting for an event.

*pam_end*(3), *pam_get_item*(3), *pam_set_item*(3), *pam_strerror*(3)